PFAlgo Class Reference

#include <PFAlgo.h>

Inheritance diagram for PFAlgo:

Public Member Functions
void	checkCleaning (const reco::PFRecHitCollection &cleanedHF)
	Check HF Cleaning. More...
PFMuonAlgo *	getPFMuonAlgo ()
	PFAlgo ()
	constructor More...
const std::auto_ptr < reco::PFCandidateCollection > &	pfCandidates () const
void	reconstructParticles (const reco::PFBlockHandle &blockHandle)
virtual void	reconstructParticles (const reco::PFBlockCollection &blocks)
	reconstruct particles More...
void	setAlgo (int algo)
void	setCandConnectorParameters (const edm::ParameterSet &iCfgCandConnector)
void	setCandConnectorParameters (bool bCorrect, bool bCalibPrimary, double dptRel_PrimaryTrack, double dptRel_MergedTrack, double ptErrorSecondary, const std::vector< double > &nuclCalibFactors)
void	setDebug (bool debug)
void	setDisplacedVerticesParameters (bool rejectTracks_Bad, bool rejectTracks_Step45, bool usePFNuclearInteractions, bool usePFConversions, bool usePFDecays, double dptRel_DispVtx)
void	setEGammaCollections (const edm::View< reco::PFCandidate > &pfEgammaCandidates, const edm::ValueMap< reco::GsfElectronRef > &valueMapGedElectrons, const edm::ValueMap< reco::PhotonRef > &valueMapGedPhotons)
void	setEGammaParameters (bool use_EGammaFilters, std::string ele_iso_path_mvaWeightFile, double ele_iso_pt, double ele_iso_mva_barrel, double ele_iso_mva_endcap, double ele_iso_combIso_barrel, double ele_iso_combIso_endcap, double ele_noniso_mva, unsigned int ele_missinghits, bool useProtectionsForJetMET, const edm::ParameterSet &ele_protectionsForJetMET, double ph_MinEt, double ph_combIso, double ph_HoE, double ph_sietaieta_eb, double ph_sietaieta_ee, const edm::ParameterSet &ph_protectionsForJetMET)
void	setEGElectronCollection (const reco::GsfElectronCollection &egelectrons)
void	setElectronExtraRef (const edm::OrphanHandle< reco::PFCandidateElectronExtraCollection > &extrah)
void	setHOTag (bool ho)
void	setMuonHandle (const edm::Handle< reco::MuonCollection > &)
void	setParameters (double nSigmaECAL, double nSigmaHCAL, const boost::shared_ptr< PFEnergyCalibration > &calibration, const boost::shared_ptr< PFEnergyCalibrationHF > &thepfEnergyCalibrationHF)
void	setPFEleParameters (double mvaEleCut, std::string mvaWeightFileEleID, bool usePFElectrons, const boost::shared_ptr< PFSCEnergyCalibration > &thePFSCEnergyCalibration, const boost::shared_ptr< PFEnergyCalibration > &thePFEnergyCalibration, double sumEtEcalIsoForEgammaSC_barrel, double sumEtEcalIsoForEgammaSC_endcap, double coneEcalIsoForEgammaSC, double sumPtTrackIsoForEgammaSC_barrel, double sumPtTrackIsoForEgammaSC_endcap, unsigned int nTrackIsoForEgammaSC, double coneTrackIsoForEgammaSC, bool applyCrackCorrections=false, bool usePFSCEleCalib=true, bool useEGElectrons=false, bool useEGammaSupercluster=true)
void	setPFMuonAlgo (PFMuonAlgo *algo)
void	setPFMuonAndFakeParameters (const edm::ParameterSet &pset)
void	setPFPhotonParameters (bool usePFPhoton, std::string mvaWeightFileConvID, double mvaConvCut, bool useReg, std::string X0_Map, const boost::shared_ptr< PFEnergyCalibration > &thePFEnergyCalibration, double sumPtTrackIsoForPhoton, double sumPtTrackIsoSlopeForPhoton)
void	setPFPhotonRegWeights (const GBRForest *LCorrForestEB, const GBRForest *LCorrForestEE, const GBRForest *GCorrForestBarrel, const GBRForest *GCorrForestEndcapHr9, const GBRForest *GCorrForestEndcapLr9, const GBRForest *PFEcalResolution)
void	setPFVertexParameters (bool useVertex, const reco::VertexCollection *primaryVertices)
void	setPhotonExtraRef (const edm::OrphanHandle< reco::PFCandidatePhotonExtraCollection > &pf_extrah)
void	setPostHFCleaningParameters (bool postHFCleaning, double minHFCleaningPt, double minSignificance, double maxSignificance, double minSignificanceReduction, double maxDeltaPhiPt, double minDeltaMet)
boost::shared_ptr < PFEnergyCalibration >	thePFEnergyCalibration ()
	return the pointer to the calibration function More...
std::auto_ptr < reco::PFCandidateCollection >	transferCandidates ()
std::auto_ptr < reco::PFCandidateCollection > &	transferCleanedCandidates ()
std::auto_ptr < reco::PFCandidateCollection >	transferElectronCandidates ()
std::auto_ptr < reco::PFCandidateElectronExtraCollection >	transferElectronExtra ()
std::auto_ptr < reco::PFCandidatePhotonExtraCollection >	transferPhotonExtra ()
virtual	~PFAlgo ()
	destructor More...

Protected Member Functions
void	associatePSClusters (unsigned iEcal, reco::PFBlockElement::Type psElementType, const reco::PFBlock &block, const edm::OwnVector< reco::PFBlockElement > &elements, const reco::PFBlock::LinkData &linkData, std::vector< bool > &active, std::vector< double > &psEne)
	Associate PS clusters to a given ECAL cluster, and return their energy. More...
bool	isFromSecInt (const reco::PFBlockElement &eTrack, std::string order) const
double	neutralHadronEnergyResolution (double clusterEnergy, double clusterEta) const
	todo: use PFClusterTools for this More...
double	nSigmaHCAL (double clusterEnergy, double clusterEta) const
void	postCleaning ()
virtual void	processBlock (const reco::PFBlockRef &blockref, std::list< reco::PFBlockRef > &hcalBlockRefs, std::list< reco::PFBlockRef > &ecalBlockRefs)
unsigned	reconstructCluster (const reco::PFCluster &cluster, double particleEnergy, bool useDirection=false, double particleX=0., double particleY=0., double particleZ=0.)
unsigned	reconstructTrack (const reco::PFBlockElement &elt, bool allowLoose=false)

Protected Attributes
std::auto_ptr < reco::PFCandidateCollection >	pfCandidates_
std::auto_ptr < reco::PFCandidateCollection >	pfCleanedCandidates_
std::auto_ptr < reco::PFCandidateCollection >	pfElectronCandidates_
	the unfiltered electron collection More...
reco::PFCandidateElectronExtraCollection	pfElectronExtra_
	the unfiltered electron collection More...
std::auto_ptr < reco::PFCandidateCollection >	pfPhotonCandidates_
	the unfiltered photon collection More...
reco::PFCandidatePhotonExtraCollection	pfPhotonExtra_
	the extra photon collection More...

Private Member Functions
reco::PFBlockRef	createBlockRef (const reco::PFBlockCollection &blocks, unsigned bi)

Private Attributes
int	algo_
bool	applyCrackCorrectionsElectrons_
reco::PFBlockHandle	blockHandle_
	input block handle (full framework case) More...
boost::shared_ptr < PFEnergyCalibration >	calibration_
double	coneEcalIsoForEgammaSC_
double	coneTrackIsoForEgammaSC_
PFCandConnector	connector_
bool	debug_
double	dptRel_DispVtx_
std::vector< double >	factors45_
double	maxDeltaPhiPt_
double	maxSignificance_
double	minDeltaMet_
double	minHFCleaningPt_
double	minSignificance_
double	minSignificanceReduction_
std::vector< double >	muonECAL_
edm::Handle< reco::MuonCollection >	muonHandle_
std::vector< double >	muonHCAL_
	Variables for muons and fakes. More...
std::vector< double >	muonHO_
double	mvaEleCut_
std::string	mvaWeightFileEleID_
	Variables for PFElectrons. More...
double	nSigmaECAL_
	number of sigma to judge energy excess in ECAL More...
double	nSigmaHCAL_
	number of sigma to judge energy excess in HCAL More...
double	nSigmaTRACK_
unsigned int	nTrackIsoForEgammaSC_
int	nVtx_
PFEGammaFilters *	pfegamma_
const edm::View < reco::PFCandidate > *	pfEgammaCandidates_
PFElectronAlgo *	pfele_
PFMuonAlgo *	pfmu_
PFPhotonAlgo *	pfpho_
bool	postHFCleaning_
bool	postMuonCleaning_
reco::Vertex	primaryVertex_
double	ptError_
bool	rejectTracks_Bad_
bool	rejectTracks_Step45_
std::vector< double >	setchi2Values_
double	sumEtEcalIsoForEgammaSC_barrel_
double	sumEtEcalIsoForEgammaSC_endcap_
double	sumPtTrackIsoForEgammaSC_barrel_
double	sumPtTrackIsoForEgammaSC_endcap_
boost::shared_ptr < PFEnergyCalibrationHF >	thepfEnergyCalibrationHF_
boost::shared_ptr < PFSCEnergyCalibration >	thePFSCEnergyCalibration_
double	useBestMuonTrack_
bool	useEGammaFilters_
	Variables for NEW EGAMMA selection. More...
bool	useEGammaSupercluster_
bool	useEGElectrons_
bool	useHO_
bool	usePFConversions_
bool	usePFDecays_
bool	usePFElectrons_
bool	usePFMuonMomAssign_
bool	usePFNuclearInteractions_
bool	usePFPhotons_
bool	usePFSCEleCalib_
bool	useProtectionsForJetMET_
bool	useVertices_
const edm::ValueMap < reco::GsfElectronRef > *	valueMapGedElectrons_
const edm::ValueMap < reco::PhotonRef > *	valueMapGedPhotons_

Friends
std::ostream &	operator<< (std::ostream &out, const PFAlgo &algo)

Detailed Description

Definition at line 52 of file PFAlgo.h.

Constructor & Destructor Documentation

PFAlgo::PFAlgo

(

)

constructor

Definition at line 58 of file PFAlgo.cc.

  : pfCandidates_( new PFCandidateCollection),
    nSigmaECAL_(0), 
    nSigmaHCAL_(1),
    algo_(1),
    debug_(false),
    pfele_(0),
    pfpho_(0),
    pfegamma_(0),
    useVertices_(false)
{}

PFAlgo::~PFAlgo ( )

virtual

destructor

Definition at line 70 of file PFAlgo.cc.

References pfegamma_, pfele_, pfpho_, useEGammaFilters_, usePFElectrons_, and usePFPhotons_.

                {
  if (usePFElectrons_) delete pfele_;
  if (usePFPhotons_)     delete pfpho_;
  if (useEGammaFilters_)  delete pfegamma_;
}

Member Function Documentation

void PFAlgo::associatePSClusters ( unsigned  iEcal, reco::PFBlockElement::Type  psElementType, const reco::PFBlock &  block, const edm::OwnVector< reco::PFBlockElement > &  elements, const reco::PFBlock::LinkData &  linkData, std::vector< bool > &  active, std::vector< double > &  psEne  )

protected

Associate PS clusters to a given ECAL cluster, and return their energy.

Definition at line 3415 of file PFAlgo.cc.

References assert(), reco::PFBlock::associatedElements(), reco::PFBlockElement::ECAL, edm::Ref< C, T, F >::isNull(), and reco::PFBlock::LINKTEST_ALL.

Referenced by processBlock().

                                          {

  // Find all PS clusters with type psElement associated to ECAL cluster iEcal, 
  // within all PFBlockElement "elements" of a given PFBlock "block"
  // psElement can be reco::PFBlockElement::PS1 or reco::PFBlockElement::PS2
  // Returns a vector of PS cluster energies, and updates the "active" vector.

  // Find all PS clusters linked to the iEcal cluster
  std::multimap<double, unsigned> sortedPS;
  typedef std::multimap<double, unsigned>::iterator IE;
  block.associatedElements( iEcal,  linkData,
                sortedPS, psElementType,
                reco::PFBlock::LINKTEST_ALL );

  // Loop over these PS clusters
  double totalPS = 0.;
  for ( IE ips=sortedPS.begin(); ips!=sortedPS.end(); ++ips ) {

    // CLuster index and distance to iEcal
    unsigned iPS = ips->second;
    // double distPS = ips->first;

    // Ignore clusters already in use
    if (!active[iPS]) continue;

    // Check that this cluster is not closer to another ECAL cluster
    std::multimap<double, unsigned> sortedECAL;
    block.associatedElements( iPS,  linkData,
                  sortedECAL,
                  reco::PFBlockElement::ECAL,
                  reco::PFBlock::LINKTEST_ALL );
    unsigned jEcal = sortedECAL.begin()->second;
    if ( jEcal != iEcal ) continue; 
    
    // Update PS energy
    PFBlockElement::Type pstype = elements[ iPS ].type();
    assert( pstype == psElementType );
    PFClusterRef psclusterref = elements[iPS].clusterRef();
    assert(!psclusterref.isNull() );
    totalPS += psclusterref->energy(); 
    psEne[0] += psclusterref->energy();
    active[iPS] = false;
  }
        

}

void PFAlgo::checkCleaning

(

const reco::PFRecHitCollection &

cleanedHF

)

Check HF Cleaning.

Definition at line 3613 of file PFAlgo.cc.

References gather_cfg::cout, debug_, reco::PFRecHit::energy(), i, j, reco::PFRecHit::layer(), minDeltaMet_, GetRecoTauVFromDQM_MC_cff::next, pfCandidates_, reco::PFRecHit::position(), EnergyCorrector::pt, reco::LeafCandidate::pt(), reco::LeafCandidate::px(), reco::LeafCandidate::py(), reconstructCluster(), runGlobalFakeInputProducer::skip, mathSSE::sqrt(), and reco::PFRecHit::time().

                                                                 { 
  

  // No hits to recover, leave.
  if ( !cleanedHits.size() ) return;

  //Compute met and met significance (met/sqrt(SumEt))
  double metX = 0.;
  double metY = 0.;
  double sumet = 0;
  std::vector<unsigned int> hitsToBeAdded;
  for(unsigned i=0; i<pfCandidates_->size(); i++) {
    const PFCandidate& pfc = (*pfCandidates_)[i];
    metX += pfc.px();
    metY += pfc.py();
    sumet += pfc.pt();
  }
  double met2 = metX*metX+metY*metY;
  double met2_Original = met2;
  // Select events with large MET significance.
  // double significance = std::sqrt(met2/sumet);
  // double significanceCor = significance;
  double metXCor = metX;
  double metYCor = metY;
  double sumetCor = sumet;
  double met2Cor = met2;
  bool next = true;
  unsigned iCor = 1E9;
  
  // Find the cleaned hit with the largest effect on the MET
  while ( next ) { 
    
    double metReduc = -1.;
    // Loop on the candidates
    for(unsigned i=0; i<cleanedHits.size(); ++i) {
      const PFRecHit& hit = cleanedHits[i];
      double length = std::sqrt(hit.position().Mag2()); 
      double px = hit.energy() * hit.position().x()/length;
      double py = hit.energy() * hit.position().y()/length;
      double pt = std::sqrt(px*px + py*py);
      
      // Check that it is  not already scheculed to be cleaned
      bool skip = false;
      for(unsigned j=0; j<hitsToBeAdded.size(); ++j) {
    if ( i == hitsToBeAdded[j] ) skip = true;
    if ( skip ) break;
      }
      if ( skip ) continue;
      
      // Now add the candidate to the MET
      double metXInt = metX + px;
      double metYInt = metY + py;
      double sumetInt = sumet + pt;
      double met2Int = metXInt*metXInt+metYInt*metYInt;

      // And check if it could contribute to a MET reduction
      if ( met2Int < met2Cor ) {
    metXCor = metXInt;
    metYCor = metYInt;
    metReduc = (met2-met2Int)/met2Int; 
    met2Cor = met2Int;
    sumetCor = sumetInt;
    // significanceCor = std::sqrt(met2Cor/sumetCor);
    iCor = i;
      }
    }
    //
    // If the MET must be significanly reduced, schedule the candidate to be added
    //
    if ( metReduc > minDeltaMet_ ) { 
      hitsToBeAdded.push_back(iCor);
      metX = metXCor;
      metY = metYCor;
      sumet = sumetCor;
      met2 = met2Cor;
    } else { 
      // Otherwise just stop the loop
      next = false;
    }
  }
  //
  // At least 10 GeV MET reduction
  if ( std::sqrt(met2_Original) - std::sqrt(met2) > 5. ) { 
    if ( debug_ ) { 
      std::cout << hitsToBeAdded.size() << " hits were re-added " << std::endl;
      std::cout << "MET reduction = " << std::sqrt(met2_Original) << " -> " 
        << std::sqrt(met2Cor) << " = " <<  std::sqrt(met2Cor) - std::sqrt(met2_Original)  
        << std::endl;
      std::cout << "Added after cleaning check : " << std::endl; 
    }
    for(unsigned j=0; j<hitsToBeAdded.size(); ++j) {
      const PFRecHit& hit = cleanedHits[hitsToBeAdded[j]];
      PFCluster cluster(hit.layer(), hit.energy(),
            hit.position().x(), hit.position().y(), hit.position().z() );
      reconstructCluster(cluster,hit.energy());
      if ( debug_ ) { 
    std::cout << pfCandidates_->back() << ". time = " << hit.time() << std::endl;
      }
    }
  }

}

reco::PFBlockRef PFAlgo::createBlockRef ( const reco::PFBlockCollection &  blocks, unsigned  bi  )

private

create a reference to a block, transient or persistent depending on the needs

Definition at line 3403 of file PFAlgo.cc.

References blockHandle_, and edm::HandleBase::isValid().

Referenced by reconstructParticles().

                          {

  if( blockHandle_.isValid() ) {
    return reco::PFBlockRef(  blockHandle_, bi );
  } 
  else {
    return reco::PFBlockRef(  &blocks, bi );
  }
}

PFMuonAlgo * PFAlgo::getPFMuonAlgo

(

)

Definition at line 92 of file PFAlgo.cc.

References pfmu_.

                                  {
  return pfmu_;
}

bool PFAlgo::isFromSecInt ( const reco::PFBlockElement &  eTrack, std::string  order  ) const

protected

Definition at line 3470 of file PFAlgo.cc.

References reco::PFBlockElement::T_FROM_DISP, reco::PFBlockElement::T_FROM_V0, reco::PFBlockElement::T_TO_DISP, reco::PFBlockElement::trackType(), usePFDecays_, and usePFNuclearInteractions_.

Referenced by processBlock(), and reconstructTrack().

                                                                         {

  reco::PFBlockElement::TrackType T_TO_DISP = reco::PFBlockElement::T_TO_DISP;
  reco::PFBlockElement::TrackType T_FROM_DISP = reco::PFBlockElement::T_FROM_DISP;
  //  reco::PFBlockElement::TrackType T_FROM_GAMMACONV = reco::PFBlockElement::T_FROM_GAMMACONV;
  reco::PFBlockElement::TrackType T_FROM_V0 = reco::PFBlockElement::T_FROM_V0;

  bool bPrimary = (order.find("primary") != string::npos);
  bool bSecondary = (order.find("secondary") != string::npos);
  bool bAll = (order.find("all") != string::npos);

  bool isToDisp = usePFNuclearInteractions_ && eTrack.trackType(T_TO_DISP);
  bool isFromDisp = usePFNuclearInteractions_ && eTrack.trackType(T_FROM_DISP);

  if (bPrimary && isToDisp) return true;
  if (bSecondary && isFromDisp ) return true;
  if (bAll && ( isToDisp || isFromDisp ) ) return true;

//   bool isFromConv = usePFConversions_ && eTrack.trackType(T_FROM_GAMMACONV);

//   if ((bAll || bSecondary)&& isFromConv) return true;

  bool isFromDecay = (bAll || bSecondary) && usePFDecays_ && eTrack.trackType(T_FROM_V0);

  return isFromDecay;


}

double PFAlgo::neutralHadronEnergyResolution ( double  clusterEnergy, double  clusterEta  ) const

protected

todo: use PFClusterTools for this

Returns

calibrated energy of a photon

calibrated energy of a neutral hadron, which can leave some energy in the ECAL ( energyECAL>0 )

Definition at line 3350 of file PFAlgo.cc.

References mathSSE::sqrt().

Referenced by processBlock().

                                                                                {

  // Add a protection
  if ( clusterEnergyHCAL < 1. ) clusterEnergyHCAL = 1.;

  double resol =  fabs(eta) < 1.48 ? 
    sqrt (1.02*1.02/clusterEnergyHCAL + 0.065*0.065)
    :
    sqrt (1.20*1.20/clusterEnergyHCAL + 0.028*0.028);

  return resol;

}

double PFAlgo::nSigmaHCAL ( double  clusterEnergy, double  clusterEta  ) const

protected

Definition at line 3365 of file PFAlgo.cc.

References create_public_lumi_plots::exp, and nSigmaHCAL_.

Referenced by processBlock(), and setParameters().

                                                             {
  double nS = fabs(eta) < 1.48 ? 
    nSigmaHCAL_ * (1. + exp(-clusterEnergyHCAL/100.))     
    :
    nSigmaHCAL_ * (1. + exp(-clusterEnergyHCAL/100.));     
  
  return nS;
}

const std::auto_ptr< reco::PFCandidateCollection >& PFAlgo::pfCandidates ( ) const

inline

Returns

collection of candidates

Definition at line 196 of file PFAlgo.h.

References pfCandidates_.

Referenced by operator<<().

                                                                       {
    return pfCandidates_;
  }

void PFAlgo::postCleaning ( )

protected

Definition at line 3506 of file PFAlgo.cc.

References gather_cfg::cout, SiPixelRawToDigiRegional_cfi::deltaPhi, reco::PFCandidate::egamma_HF, reco::PFCandidate::h_HF, i, j, maxDeltaPhiPt_, maxSignificance_, minDeltaMet_, minHFCleaningPt_, minSignificance_, minSignificanceReduction_, GetRecoTauVFromDQM_MC_cff::next, reco::PFCandidate::particleId(), pfCandidates_, pfCleanedCandidates_, postHFCleaning_, reco::LeafCandidate::pt(), reco::LeafCandidate::px(), reco::LeafCandidate::py(), runGlobalFakeInputProducer::skip, and mathSSE::sqrt().

Referenced by reconstructParticles().

                     { 
  
  // Check if the post HF Cleaning was requested - if not, do nothing
  if ( !postHFCleaning_ ) return;

  //Compute met and met significance (met/sqrt(SumEt))
  double metX = 0.;
  double metY = 0.;
  double sumet = 0;
  std::vector<unsigned int> pfCandidatesToBeRemoved;
  for(unsigned i=0; i<pfCandidates_->size(); i++) {
    const PFCandidate& pfc = (*pfCandidates_)[i];
    metX += pfc.px();
    metY += pfc.py();
    sumet += pfc.pt();
  }    
  double met2 = metX*metX+metY*metY;
  // Select events with large MET significance.
  double significance = std::sqrt(met2/sumet);
  double significanceCor = significance;
  if ( significance > minSignificance_ ) { 
    
    double metXCor = metX;
    double metYCor = metY;
    double sumetCor = sumet;
    double met2Cor = met2;
    double deltaPhi = 3.14159;
    double deltaPhiPt = 100.;
    bool next = true;
    unsigned iCor = 1E9;

    // Find the HF candidate with the largest effect on the MET
    while ( next ) { 

      double metReduc = -1.;
      // Loop on the candidates
      for(unsigned i=0; i<pfCandidates_->size(); ++i) {
    const PFCandidate& pfc = (*pfCandidates_)[i];

    // Check that the pfCandidate is in the HF
    if ( pfc.particleId() != reco::PFCandidate::h_HF && 
         pfc.particleId() != reco::PFCandidate::egamma_HF ) continue;

    // Check if has meaningful pt
    if ( pfc.pt() < minHFCleaningPt_ ) continue;
    
    // Check that it is  not already scheculed to be cleaned
    bool skip = false;
    for(unsigned j=0; j<pfCandidatesToBeRemoved.size(); ++j) {
      if ( i == pfCandidatesToBeRemoved[j] ) skip = true;
      if ( skip ) break;
    }
    if ( skip ) continue;
    
    // Check that the pt and the MET are aligned
    deltaPhi = std::acos((metX*pfc.px()+metY*pfc.py())/(pfc.pt()*std::sqrt(met2)));
    deltaPhiPt = deltaPhi*pfc.pt();
    if ( deltaPhiPt > maxDeltaPhiPt_ ) continue;

    // Now remove the candidate from the MET
    double metXInt = metX - pfc.px();
    double metYInt = metY - pfc.py();
    double sumetInt = sumet - pfc.pt();
    double met2Int = metXInt*metXInt+metYInt*metYInt;
    if ( met2Int < met2Cor ) {
      metXCor = metXInt;
      metYCor = metYInt;
      metReduc = (met2-met2Int)/met2Int; 
      met2Cor = met2Int;
      sumetCor = sumetInt;
      significanceCor = std::sqrt(met2Cor/sumetCor);
      iCor = i;
    }
      }
      //
      // If the MET must be significanly reduced, schedule the candidate to be cleaned
      if ( metReduc > minDeltaMet_ ) { 
    pfCandidatesToBeRemoved.push_back(iCor);
    metX = metXCor;
    metY = metYCor;
    sumet = sumetCor;
    met2 = met2Cor;
      } else { 
      // Otherwise just stop the loop
    next = false;
      }
    }
    //
    // The significance must be significantly reduced to indeed clean the candidates
    if ( significance - significanceCor > minSignificanceReduction_ && 
     significanceCor < maxSignificance_ ) {
      std::cout << "Significance reduction = " << significance << " -> " 
        << significanceCor << " = " << significanceCor - significance 
        << std::endl;
      for(unsigned j=0; j<pfCandidatesToBeRemoved.size(); ++j) {
    std::cout << "Removed : " << (*pfCandidates_)[pfCandidatesToBeRemoved[j]] << std::endl;
    pfCleanedCandidates_->push_back( (*pfCandidates_)[ pfCandidatesToBeRemoved[j] ] );
    (*pfCandidates_)[pfCandidatesToBeRemoved[j]].rescaleMomentum(1E-6);
    //reco::PFCandidate::ParticleType unknown = reco::PFCandidate::X;
    //(*pfCandidates_)[pfCandidatesToBeRemoved[j]].setParticleType(unknown);
      }
    }
  }

}

void PFAlgo::processBlock ( const reco::PFBlockRef &  blockref, std::list< reco::PFBlockRef > &  hcalBlockRefs, std::list< reco::PFBlockRef > &  ecalBlockRefs  )

protectedvirtual

process one block. can be reimplemented in more sophisticated algorithms

Reimplemented in PFAlgoTestBenchConversions, and PFAlgoTestBenchElectrons.

Definition at line 537 of file PFAlgo.cc.

References a, funct::abs(), HLT_25ns14e33_v1_cff::algo, assert(), associatePSClusters(), b, createPayload::block, alignmentValidation::c1, calibration_, dtNoiseDBValidation_cfg::cerr, reco::LeafCandidate::charge(), DDVectorGetter::check(), gather_cfg::cout, debug_, DetachedTripletStep_cff::detachedTripletStep, dptRel_DispVtx_, reco::PFCandidate::e, ECAL, reco::PFBlockElement::ECAL, RecoEcal_cff::ecalClusters, reco::PFCandidate::egammaExtraRef(), asciidump::elements, reco::PFCandidate::elementsInBlocks(), reco::LeafCandidate::energy(), reco::LeafCandidate::eta(), eta(), factors45_, plotBeamSpotDB::first, HLT_25ns14e33_v1_cff::fraction, reco::PFCandidate::gamma, PFElectronAlgo::getAllElectronCandidates(), PFElectronAlgo::getElectronCandidates(), PFElectronAlgo::getElectronExtra(), reco::PFBlockElement::GSF, HCAL, reco::PFBlockElement::HCAL, PFLayer::HF_EM, PFLayer::HF_HAD, reco::TrackBase::highPurity, reco::TrackBase::hltIter0, reco::TrackBase::hltIter1, reco::TrackBase::hltIter2, reco::TrackBase::hltIter3, reco::TrackBase::hltIter4, reco::TrackBase::hltIterX, reco::PFBlockElement::HO, i, cuy::ii, cmsHarvester::index, InitialStep_cff::initialStep, PFEGammaFilters::isElectron(), PFEGammaFilters::isElectronSafeForJetMET(), PFElectronAlgo::isElectronValidCandidate(), isFromSecInt(), PFMuonAlgo::isIsolatedMuon(), PFMuonAlgo::isLooseMuon(), PFMuonAlgo::isMuon(), edm::Ref< C, T, F >::isNonnull(), edm::Ref< C, T, F >::isNull(), PFEGammaFilters::isPhotonSafeForJetMET(), PFPhotonAlgo::isPhotonValidCandidate(), j, reco::PFBlock::LINKTEST_ALL, bookConverter::max, min(), LowPU_MixedTripletStep_cff::mixedTripletStep, reco::PFCandidate::mu, muonECAL_, muonHCAL_, muonHO_, reco::PFCandidate::mva_e_pi(), neutralHadronEnergyResolution(), nSigmaECAL_, nSigmaHCAL(), nSigmaTRACK_, nVtx_, convertSQLiteXML::ok, AlCaHLTBitMon_ParallelJobs::p, HLT_25ns14e33_v1_cff::particleType, PFEGammaFilters::passElectronSelection(), PFEGammaFilters::passPhotonSelection(), pfCandidates_, pfegamma_, pfEgammaCandidates_, pfele_, pfElectronCandidates_, pfElectronExtra_, pfpho_, pfPhotonCandidates_, pfPhotonExtra_, reco::LeafCandidate::phi(), PixelLessStep_cff::pixelLessStep, primaryVertex_, reco::PFBlockElement::PS1, reco::PFBlockElement::PS2, reco::LeafCandidate::pt(), ptError_, edm::OwnVector< T, P >::push_back(), HLT_25ns14e33_v1_cff::quality, reconstructCluster(), reconstructTrack(), edm::View< T >::refAt(), rejectTracks_Bad_, rejectTracks_Step45_, edm::second(), reco::PFCandidate::set_mva_e_pi(), reco::PFCandidate::set_mva_Isolated(), reco::PFCandidate::set_mva_nothing_gamma(), reco::LeafCandidate::setCharge(), reco::PFCandidate::setEcalEnergy(), reco::PFCandidate::setHcalEnergy(), reco::PFCandidate::setHoEnergy(), reco::LeafCandidate::setP4(), reco::PFCandidate::setParticleType(), reco::PFBlockElementTrack::setPositionAtECALEntrance(), reco::PFCandidate::setVertex(), edm::View< T >::size(), edm::OwnVector< T, P >::size(), runGlobalFakeInputProducer::skip, mathSSE::sqrt(), reco::PFBlockElement::T_FROM_GAMMACONV, thepfEnergyCalibrationHF_, reco::PFBlockElement::TRACK, reco::btau::trackMomentum, reco::PFBlockElementTrack::trackType(), funct::true, useEGammaFilters_, useHO_, usePFConversions_, usePFElectrons_, usePFPhotons_, useProtectionsForJetMET_, findQualityFiles::v, x, X, reco::Vertex::x(), reco::Vertex::y(), Gflash::Z, and reco::Vertex::z().

Referenced by reconstructParticles().

                                                                    { 
  
  // debug_ = false;
  assert(!blockref.isNull() );
  const reco::PFBlock& block = *blockref;

  typedef std::multimap<double, unsigned>::iterator IE;
  typedef std::multimap<double, std::pair<unsigned,::math::XYZVector> >::iterator IS;
  typedef std::multimap<double, std::pair<unsigned,bool> >::iterator IT;
  typedef std::multimap< unsigned, std::pair<double, unsigned> >::iterator II;

  if(debug_) {
    cout<<"#########################################################"<<endl;
    cout<<"#####           Process Block:                      #####"<<endl;
    cout<<"#########################################################"<<endl;
    cout<<block<<endl;
  }


  const edm::OwnVector< reco::PFBlockElement >& elements = block.elements();
  // make a copy of the link data, which will be edited.
  PFBlock::LinkData linkData =  block.linkData();
  
  // keep track of the elements which are still active.
  vector<bool>   active( elements.size(), true );


  // //PFElectrons:
  // usePFElectrons_ external configurable parameter to set the usage of pf electron
  std::vector<reco::PFCandidate> tempElectronCandidates;
  tempElectronCandidates.clear();
  if (usePFElectrons_) {
    if (pfele_->isElectronValidCandidate(blockref,active, primaryVertex_ )){
      // if there is at least a valid candidate is get the vector of pfcandidates
      const std::vector<reco::PFCandidate> PFElectCandidates_(pfele_->getElectronCandidates());
      for ( std::vector<reco::PFCandidate>::const_iterator ec=PFElectCandidates_.begin();   ec != PFElectCandidates_.end(); ++ec )tempElectronCandidates.push_back(*ec);
      
      // (***) We're filling the ElectronCandidates into the PFCandiate collection
      // ..... Once we let PFPhotonAlgo over-write electron-decision, we need to move this to
      // ..... after the PhotonAlgo has run (Fabian)
    }    
    // The vector active is automatically changed (it is passed by ref) in PFElectronAlgo
    // for all the electron candidate      
    pfElectronCandidates_->insert(pfElectronCandidates_->end(), 
                  pfele_->getAllElectronCandidates().begin(), 
                  pfele_->getAllElectronCandidates().end()); 

    pfElectronExtra_.insert(pfElectronExtra_.end(), 
                pfele_->getElectronExtra().begin(),
                pfele_->getElectronExtra().end());
    
  }
  if( /* --- */ usePFPhotons_ /* --- */ ) {    
    
    if(debug_)
      cout<<endl<<"--------------- entering PFPhotonAlgo ----------------"<<endl;
    vector<PFCandidatePhotonExtra> pfPhotonExtraCand;
    if ( pfpho_->isPhotonValidCandidate(blockref,               // passing the reference to the PFBlock
                    active,                 // std::vector<bool> containing information about acitivity
                    pfPhotonCandidates_,    // pointer to candidate vector, to be filled by the routine
                    pfPhotonExtraCand,      // candidate extra vector, to be filled by the routine   
                    tempElectronCandidates
                    //pfElectronCandidates_   // pointer to some auziliary UNTOUCHED FOR NOW
                    ) ) {
      if(debug_)
    std::cout<< " In this PFBlock we found "<<pfPhotonCandidates_->size()<<" Photon Candidates."<<std::endl;
      
      // CAUTION: In case we want to allow the PhotonAlgo to 'over-write' what the ElectronAlgo did above
      // ........ we should NOT fill the PFCandidate-vector with the electrons above (***)
      
      // Here we need to add all the photon cands to the pfCandidate list
      unsigned int extracand =0;
      PFCandidateCollection::const_iterator cand = pfPhotonCandidates_->begin();      
      for( ; cand != pfPhotonCandidates_->end(); ++cand, ++extracand) {
    pfCandidates_->push_back(*cand);
    pfPhotonExtra_.push_back(pfPhotonExtraCand[extracand]);
      }
      
    } // end of 'if' in case photons are found    
    pfPhotonExtraCand.clear();
    pfPhotonCandidates_->clear();
  } // end of Photon algo
  
  if (usePFElectrons_) {
    for ( std::vector<reco::PFCandidate>::const_iterator ec=tempElectronCandidates.begin();   ec != tempElectronCandidates.end(); ++ec ){
      pfCandidates_->push_back(*ec);  
    } 
    tempElectronCandidates.clear();
  }


  // New EGamma Reconstruction 10/10/2013
  if(useEGammaFilters_) {

    // const edm::ValueMap<reco::GsfElectronRef> & myGedElectronValMap(*valueMapGedElectrons_);
    bool egmLocalDebug = false;
    bool egmLocalBlockDebug = false;

    unsigned int negmcandidates = pfEgammaCandidates_->size();
    for(unsigned int ieg=0 ; ieg <  negmcandidates; ++ieg) {
      //      const reco::PFCandidate & egmcand((*pfEgammaCandidates_)[ieg]);
      reco::PFCandidateRef pfEgmRef = pfEgammaCandidates_->refAt(ieg).castTo<reco::PFCandidateRef>(); 

      const PFCandidate::ElementsInBlocks& theElements = (*pfEgmRef).elementsInBlocks();
      PFCandidate::ElementsInBlocks::const_iterator iegfirst = theElements.begin(); 
      bool sameBlock = false;
      bool isGoodElectron = false;
      bool isGoodPhoton = false;
      bool isPrimaryElectron = false;
      if(iegfirst->first == blockref) 
    sameBlock = true;
      if(sameBlock) {

    if(egmLocalDebug)
      cout << " I am in looping on EGamma Candidates: pt " << (*pfEgmRef).pt() 
           << " eta,phi " << (*pfEgmRef).eta() << ", " << (*pfEgmRef).phi() 
           << " charge " << (*pfEgmRef).charge() << endl;

    if((*pfEgmRef).gsfTrackRef().isNonnull()) {

      reco::GsfElectronRef gedEleRef = (*valueMapGedElectrons_)[pfEgmRef];
      if(gedEleRef.isNonnull()) {
        isGoodElectron = pfegamma_->passElectronSelection(*gedEleRef,*pfEgmRef,nVtx_);
        isPrimaryElectron = pfegamma_->isElectron(*gedEleRef);
        if(egmLocalDebug){
          if(isGoodElectron) 
        cout << "** Good Electron, pt " << gedEleRef->pt()
             << " eta, phi " << gedEleRef->eta() << ", " << gedEleRef->phi() 
             << " charge " << gedEleRef->charge() 
             << " isPrimary " << isPrimaryElectron  << endl;
        }

       
      }
    }
    if((*pfEgmRef).superClusterRef().isNonnull()) {

      reco::PhotonRef gedPhoRef = (*valueMapGedPhotons_)[pfEgmRef];   
      if(gedPhoRef.isNonnull()) {
        isGoodPhoton =  pfegamma_->passPhotonSelection(*gedPhoRef);
        if(egmLocalDebug) {
          if(isGoodPhoton) 
        cout << "** Good Photon, pt " << gedPhoRef->pt()
             << " eta, phi " << gedPhoRef->eta() << ", " << gedPhoRef->phi() << endl;
        }
      }
    }
      } // end same block
      
      if(isGoodElectron && isGoodPhoton) {
    if(isPrimaryElectron)
      isGoodPhoton = false;
    else
      isGoodElectron = false;
      }

      // isElectron
      if(isGoodElectron) {
    reco::GsfElectronRef gedEleRef = (*valueMapGedElectrons_)[pfEgmRef];
    reco::PFCandidate myPFElectron = *pfEgmRef;
    // run protections
    bool lockTracks = false;
    bool isSafe = true;
    if( useProtectionsForJetMET_) {
      lockTracks = true;
      isSafe = pfegamma_->isElectronSafeForJetMET(*gedEleRef,myPFElectron,primaryVertex_,lockTracks);
    }

    if(isSafe) {
      reco::PFCandidate::ParticleType particleType = reco::PFCandidate::e;
      myPFElectron.setParticleType(particleType);
      myPFElectron.setCharge(gedEleRef->charge());
      myPFElectron.setP4(gedEleRef->p4());
      myPFElectron.set_mva_e_pi(gedEleRef->mva_e_pi());
          myPFElectron.set_mva_Isolated(gedEleRef->mva_Isolated());

      if(egmLocalDebug) {
        cout << " PFAlgo: found an electron with NEW EGamma code " << endl;
        cout << " myPFElectron: pt " << myPFElectron.pt() 
         << " eta,phi " << myPFElectron.eta() << ", " <<myPFElectron.phi()
         << " mva " << myPFElectron.mva_e_pi() 
         << " charge " << myPFElectron.charge() << endl;
      }
      
      
      // Lock all the elements
      if(egmLocalBlockDebug)
        cout << " THE BLOCK " << *blockref << endl;
      for (PFCandidate::ElementsInBlocks::const_iterator ieb = theElements.begin(); 
           ieb<theElements.end(); ++ieb) {
        active[ieb->second] = false;
        if(egmLocalBlockDebug)
          cout << " Elements used " <<  ieb->second << endl;
      }
      
      // The electron is considered safe for JetMET and the additional tracks pointing to it are locked
      if(lockTracks) {
        const PFCandidate::ElementsInBlocks& extraTracks = myPFElectron.egammaExtraRef()->extraNonConvTracks();
        for (PFCandidate::ElementsInBlocks::const_iterator itrk = extraTracks.begin(); 
         itrk<extraTracks.end(); ++itrk) {
          active[itrk->second] = false;
        }
      }

      pfCandidates_->push_back(myPFElectron);

    }
    else {
      if(egmLocalDebug)
        cout << "PFAlgo: Electron DISCARDED, NOT SAFE FOR JETMET " << endl;
    } 
      }
      if(isGoodPhoton) {
    reco::PhotonRef gedPhoRef = (*valueMapGedPhotons_)[pfEgmRef];   
    reco::PFCandidate myPFPhoton = *pfEgmRef;
    bool isSafe = true;
    if( useProtectionsForJetMET_) {
      isSafe = pfegamma_->isPhotonSafeForJetMET(*gedPhoRef,myPFPhoton);
    }



    if(isSafe) {
      reco::PFCandidate::ParticleType particleType = reco::PFCandidate::gamma;
      myPFPhoton.setParticleType(particleType);
      myPFPhoton.setCharge(0);
      myPFPhoton.set_mva_nothing_gamma(1.);
      ::math::XYZPoint v(primaryVertex_.x(), primaryVertex_.y(), primaryVertex_.z());
      myPFPhoton.setVertex( v  );  
      myPFPhoton.setP4(gedPhoRef->p4());
      if(egmLocalDebug) {
        cout << " PFAlgo: found a photon with NEW EGamma code " << endl;
        cout << " myPFPhoton: pt " << myPFPhoton.pt() 
         << " eta,phi " << myPFPhoton.eta() << ", " <<myPFPhoton.phi() 
         << " charge " << myPFPhoton.charge() << endl;
      }
      
      // Lock all the elements
      if(egmLocalBlockDebug)
        cout << " THE BLOCK " << *blockref << endl;
      for (PFCandidate::ElementsInBlocks::const_iterator ieb = theElements.begin(); 
           ieb<theElements.end(); ++ieb) {
        active[ieb->second] = false;
        if(egmLocalBlockDebug)
          cout << " Elements used " <<  ieb->second << endl;
      }
      pfCandidates_->push_back(myPFPhoton);

    } // end isSafe
      } // end isGoodPhoton
    } // end loop on EGM candidates
  } // end if use EGammaFilters



  //Lock extra conversion tracks not used by Photon Algo
  if (usePFConversions_  )
    {
      for(unsigned iEle=0; iEle<elements.size(); iEle++) {
    PFBlockElement::Type type = elements[iEle].type();
    if(type==PFBlockElement::TRACK)
      {
        if(elements[iEle].trackRef()->algo() == 12) // should not be reco::TrackBase::conversionStep ?
          active[iEle]=false;   
        if(elements[iEle].trackRef()->quality(reco::TrackBase::highPurity))continue;
        const reco::PFBlockElementTrack * trackRef = dynamic_cast<const reco::PFBlockElementTrack*>((&elements[iEle]));
        if(!(trackRef->trackType(reco::PFBlockElement::T_FROM_GAMMACONV)))continue;
        if(elements[iEle].convRefs().size())active[iEle]=false;
      }
      }
    }




  
  if(debug_) 
    cout<<endl<<"--------------- loop 1 ------------------"<<endl;

  //COLINFEB16
  // In loop 1, we loop on all elements. 

  // The primary goal is to deal with tracks that are:
  // - not associated to an HCAL cluster
  // - not identified as an electron. 
  // Those tracks should be predominantly relatively low energy charged 
  // hadrons which are not detected in the ECAL. 

  // The secondary goal is to prepare for the next loops
  // - The ecal and hcal elements are sorted in separate vectors
  // which will be used as a base for the corresponding loops.
  // - For tracks which are connected to more than one HCAL cluster, 
  // the links between the track and the cluster are cut for all clusters 
  // but the closest one. 
  // - HF only blocks ( HFEM, HFHAD, HFEM+HFAD) are identified 

  // obsolete comments? 
  // loop1: 
  // - sort ecal and hcal elements in separate vectors
  // - for tracks:
  //       - lock closest ecal cluster 
  //       - cut link to farthest hcal cluster, if more than 1.

  // vectors to store indices to ho, hcal and ecal elements 
  vector<unsigned> hcalIs;
  vector<unsigned> hoIs;
  vector<unsigned> ecalIs;
  vector<unsigned> trackIs;
  vector<unsigned> ps1Is;
  vector<unsigned> ps2Is;

  vector<unsigned> hfEmIs;
  vector<unsigned> hfHadIs;
  

  for(unsigned iEle=0; iEle<elements.size(); iEle++) {
    PFBlockElement::Type type = elements[iEle].type();

    if(debug_ && type != PFBlockElement::BREM ) cout<<endl<<elements[iEle];   

    switch( type ) {
    case PFBlockElement::TRACK:
      if ( active[iEle] ) { 
    trackIs.push_back( iEle );
    if(debug_) cout<<"TRACK, stored index, continue"<<endl;
      }
      break;
    case PFBlockElement::ECAL: 
      if ( active[iEle]  ) { 
    ecalIs.push_back( iEle );
    if(debug_) cout<<"ECAL, stored index, continue"<<endl;
      }
      continue;
    case PFBlockElement::HCAL:
      if ( active[iEle] ) { 
    hcalIs.push_back( iEle );
    if(debug_) cout<<"HCAL, stored index, continue"<<endl;
      }
      continue;
    case PFBlockElement::HO:
      if (useHO_) {
    if ( active[iEle] ) { 
      hoIs.push_back( iEle );
      if(debug_) cout<<"HO, stored index, continue"<<endl;
    }
      }
      continue;
    case PFBlockElement::HFEM:
      if ( active[iEle] ) { 
    hfEmIs.push_back( iEle );
    if(debug_) cout<<"HFEM, stored index, continue"<<endl;
      }
      continue;
    case PFBlockElement::HFHAD:
      if ( active[iEle] ) { 
    hfHadIs.push_back( iEle );
    if(debug_) cout<<"HFHAD, stored index, continue"<<endl;
      }
      continue;
    default:
      continue;
    }

    // we're now dealing with a track
    unsigned iTrack = iEle;
    reco::MuonRef muonRef = elements[iTrack].muonRef();    

    //Check if the track is a primary track of a secondary interaction
    //If that is the case reconstruct a charged hadron noly using that
    //track
    if (active[iTrack] && isFromSecInt(elements[iEle], "primary")){
      bool isPrimaryTrack = elements[iEle].displacedVertexRef(PFBlockElement::T_TO_DISP)->displacedVertexRef()->isTherePrimaryTracks();
      if (isPrimaryTrack) {
    if (debug_) cout << "Primary Track reconstructed alone" << endl;

    unsigned tmpi = reconstructTrack(elements[iEle]);
    (*pfCandidates_)[tmpi].addElementInBlock( blockref, iEle );
    active[iTrack] = false;
      }
    }


    if(debug_) { 
      if ( !active[iTrack] ) 
    cout << "Already used by electrons, muons, conversions" << endl;
    }
    
    // Track already used as electron, muon, conversion?
    // Added a check on the activated element
    if ( ! active[iTrack] ) continue;
  
    reco::TrackRef trackRef = elements[iTrack].trackRef();
    assert( !trackRef.isNull() ); 

    if (debug_ ) {
      cout <<"PFAlgo:processBlock "<<" "<<trackIs.size()<<" "<<ecalIs.size()<<" "<<hcalIs.size()<<" "<<hoIs.size()<<endl;
    }

    // look for associated elements of all types
    //COLINFEB16 
    // all types of links are considered. 
    // the elements are sorted by increasing distance
    std::multimap<double, unsigned> ecalElems;
    block.associatedElements( iTrack,  linkData,
                              ecalElems ,
                              reco::PFBlockElement::ECAL,
                  reco::PFBlock::LINKTEST_ALL );
    
    std::multimap<double, unsigned> hcalElems;
    block.associatedElements( iTrack,  linkData,
                              hcalElems,
                              reco::PFBlockElement::HCAL,
                              reco::PFBlock::LINKTEST_ALL );

    // When a track has no HCAL cluster linked, but another track is linked to the same
    // ECAL cluster and an HCAL cluster, link the track to the HCAL cluster for 
    // later analysis
    if ( hcalElems.empty() && !ecalElems.empty() ) {
      // debug_ = true;
      unsigned ntt = 1;
      unsigned index = ecalElems.begin()->second;
      std::multimap<double, unsigned> sortedTracks;
      block.associatedElements( index,  linkData,
                sortedTracks,
                reco::PFBlockElement::TRACK,
                reco::PFBlock::LINKTEST_ALL );
      // std::cout << "The ECAL is linked to " << sortedTracks.size() << std::endl;

      // Loop over all tracks
      for(IE ie = sortedTracks.begin(); ie != sortedTracks.end(); ++ie ) {
    unsigned jTrack = ie->second;
    // std::cout << "Track " << jTrack << std::endl;
    // Track must be active
    if ( !active[jTrack] ) continue;
    //std::cout << "Active " << std::endl;
    
    // The loop is on the other tracks !
    if ( jTrack == iTrack ) continue;
    //std::cout << "A different track ! " << std::endl;
    
    // Check if the ECAL closest to this track is the current ECAL
    // Otherwise ignore this track in the neutral energy determination
    std::multimap<double, unsigned> sortedECAL;
    block.associatedElements( jTrack,  linkData,
                  sortedECAL,
                  reco::PFBlockElement::ECAL,
                  reco::PFBlock::LINKTEST_ALL );
    if ( sortedECAL.begin()->second != index ) continue;
    //std::cout << "With closest ECAL identical " << std::endl;

    
    // Check if this track is also linked to an HCAL 
    std::multimap<double, unsigned> sortedHCAL;
    block.associatedElements( jTrack,  linkData,
                  sortedHCAL,
                  reco::PFBlockElement::HCAL,
                  reco::PFBlock::LINKTEST_ALL );
    if ( !sortedHCAL.size() ) continue;
    //std::cout << "With an HCAL cluster " << sortedHCAL.begin()->first << std::endl;
    ntt++;
    
    // In that case establish a link with the first track 
    block.setLink( iTrack, 
               sortedHCAL.begin()->second, 
               sortedECAL.begin()->first, 
               linkData,
               PFBlock::LINKTEST_RECHIT );
    
      } // End other tracks
      
      // Redefine HCAL elements 
      block.associatedElements( iTrack,  linkData,
                hcalElems,
                reco::PFBlockElement::HCAL,
                reco::PFBlock::LINKTEST_ALL );

      if ( debug_ && hcalElems.size() ) 
    std::cout << "Track linked back to HCAL due to ECAL sharing with other tracks" << std::endl;
    }
    
    //MICHELE 
    //TEMPORARY SOLUTION FOR ELECTRON REJECTION IN PFTAU
    //COLINFEB16 
    // in case particle flow electrons are not reconstructed, 
    // the mva_e_pi of the charged hadron will be set to 1 
    // if a GSF element is associated to the current TRACK element
    // This information will be used in the electron rejection for tau ID.
    std::multimap<double,unsigned> gsfElems;
    if (usePFElectrons_ == false) {
      block.associatedElements( iTrack,  linkData,
                gsfElems ,
                reco::PFBlockElement::GSF );
    }
    //

    if(hcalElems.empty() && debug_) {
      cout<<"no hcal element connected to track "<<iTrack<<endl;
    }

    // will now loop on associated elements ... 
    // typedef std::multimap<double, unsigned>::iterator IE;
   
    bool hcalFound = false;

    if(debug_) 
      cout<<"now looping on elements associated to the track"<<endl;
    
    // ... first on associated ECAL elements
    // Check if there is still a free ECAL for this track
    for(IE ie = ecalElems.begin(); ie != ecalElems.end(); ++ie ) {
      
      unsigned index = ie->second;
      // Sanity checks and optional printout
      PFBlockElement::Type type = elements[index].type();
      if(debug_) {
    double  dist  = ie->first;
        cout<<"\telement "<<elements[index]<<" linked with distance = "<< dist <<endl;
    if ( ! active[index] ) cout << "This ECAL is already used - skip it" << endl;      
      }
      assert( type == PFBlockElement::ECAL );

      // This ECAL is not free (taken by an electron?) - just skip it
      if ( ! active[index] ) continue;      

      // Flag ECAL clusters for which the corresponding track is not linked to an HCAL cluster

      //reco::PFClusterRef clusterRef = elements[index].clusterRef();
      //assert( !clusterRef.isNull() );
      if( !hcalElems.empty() && debug_)
    cout<<"\t\tat least one hcal element connected to the track."
        <<" Sparing Ecal cluster for the hcal loop"<<endl; 

    } //loop print ecal elements

  
    // tracks which are not linked to an HCAL 
    // are reconstructed now. 

    if( hcalElems.empty() ) {
      
      if ( debug_ ) 
    std::cout << "Now deals with tracks linked to no HCAL clusters" << std::endl; 
      // vector<unsigned> elementIndices;
      // elementIndices.push_back(iTrack); 

      // The track momentum
      double trackMomentum = elements[iTrack].trackRef()->p();      
      if ( debug_ ) 
    std::cout << elements[iTrack] << std::endl; 
      
      // Is it a "tight" muon ? In that case assume no 
      //Track momentum corresponds to the calorimeter
      //energy for now
      bool thisIsAMuon = PFMuonAlgo::isMuon(elements[iTrack]);
      if ( thisIsAMuon ) trackMomentum = 0.;

      // If it is not a muon check if Is it a fake track ?
      //Michalis: I wonder if we should convert this to dpt/pt?
      bool rejectFake = false;
      if ( !thisIsAMuon  && elements[iTrack].trackRef()->ptError() > ptError_ ) { 

    double deficit = trackMomentum; 
    double resol = neutralHadronEnergyResolution(trackMomentum,
                             elements[iTrack].trackRef()->eta());
    resol *= trackMomentum;

    if ( !ecalElems.empty() ) { 
      unsigned thisEcal = ecalElems.begin()->second;
      reco::PFClusterRef clusterRef = elements[thisEcal].clusterRef();
      deficit -= clusterRef->energy();
      resol = neutralHadronEnergyResolution(trackMomentum,
                        clusterRef->positionREP().Eta());
      resol *= trackMomentum;
    }

    bool isPrimary = isFromSecInt(elements[iTrack], "primary");

    if ( deficit > nSigmaTRACK_*resol && !isPrimary) { 
      rejectFake = true;
      active[iTrack] = false;
      if ( debug_ )  
        std::cout << elements[iTrack] << std::endl
              << "is probably a fake (1) --> lock the track" 
              << std::endl;
    }
      }

      if ( rejectFake ) continue;

      // Create a track candidate       
      // unsigned tmpi = reconstructTrack( elements[iTrack] );
      //active[iTrack] = false;
      std::vector<unsigned> tmpi;
      std::vector<unsigned> kTrack;
      
      // Some cleaning : secondary tracks without calo's and large momentum must be fake
      double Dpt = trackRef->ptError();

      if ( rejectTracks_Step45_ && ecalElems.empty() && 
       trackMomentum > 30. && Dpt > 0.5 && 
       ( trackRef->algo() == TrackBase::mixedTripletStep || 
         trackRef->algo() == TrackBase::pixelLessStep || 
         trackRef->algo() == TrackBase::tobTecStep ) ) {

    double dptRel = Dpt/trackRef->pt()*100;
    bool isPrimaryOrSecondary = isFromSecInt(elements[iTrack], "all");

    if ( isPrimaryOrSecondary && dptRel < dptRel_DispVtx_) continue;
    unsigned nHits =  elements[iTrack].trackRef()->hitPattern().trackerLayersWithMeasurement();
    unsigned int NLostHit = trackRef->hitPattern().trackerLayersWithoutMeasurement(HitPattern::TRACK_HITS);

    if ( debug_ ) 
      std::cout << "A track (algo = " << trackRef->algo() << ") with momentum " << trackMomentum 
            << " / " << elements[iTrack].trackRef()->pt() << " +/- " << Dpt 
            << " / " << elements[iTrack].trackRef()->eta() 
            << " without any link to ECAL/HCAL and with " << nHits << " (" << NLostHit 
            << ") hits (lost hits) has been cleaned" << std::endl;
    active[iTrack] = false;
    continue;
      }


      tmpi.push_back(reconstructTrack( elements[iTrack]));

      kTrack.push_back(iTrack);
      active[iTrack] = false;

      // No ECAL cluster either ... continue...
      if ( ecalElems.empty() ) { 
    (*pfCandidates_)[tmpi[0]].setEcalEnergy( 0., 0. );
    (*pfCandidates_)[tmpi[0]].setHcalEnergy( 0., 0. );
    (*pfCandidates_)[tmpi[0]].setHoEnergy( 0., 0. );
    (*pfCandidates_)[tmpi[0]].setPs1Energy( 0 );
    (*pfCandidates_)[tmpi[0]].setPs2Energy( 0 );
    (*pfCandidates_)[tmpi[0]].addElementInBlock( blockref, kTrack[0] );
    continue;
      }
          
      // Look for closest ECAL cluster
      unsigned thisEcal = ecalElems.begin()->second;
      reco::PFClusterRef clusterRef = elements[thisEcal].clusterRef();
      if ( debug_ ) std::cout << " is associated to " << elements[thisEcal] << std::endl;


      // Set ECAL energy for muons
      if ( thisIsAMuon ) { 
    (*pfCandidates_)[tmpi[0]].setEcalEnergy( clusterRef->energy(),
                         std::min(clusterRef->energy(), muonECAL_[0]) );
    (*pfCandidates_)[tmpi[0]].setHcalEnergy( 0., 0. );
    (*pfCandidates_)[tmpi[0]].setHoEnergy( 0., 0. );
    (*pfCandidates_)[tmpi[0]].setPs1Energy( 0 );
    (*pfCandidates_)[tmpi[0]].setPs2Energy( 0 );
    (*pfCandidates_)[tmpi[0]].addElementInBlock( blockref, kTrack[0] );
      }
      
      double slopeEcal = 1.;
      bool connectedToEcal = false;
      unsigned iEcal = 99999;
      double calibEcal = 0.;
      double calibHcal = 0.;
      double totalEcal = thisIsAMuon ? -muonECAL_[0] : 0.;

      // Consider charged particles closest to the same ECAL cluster
      std::multimap<double, unsigned> sortedTracks;
      block.associatedElements( thisEcal,  linkData,
                sortedTracks,
                reco::PFBlockElement::TRACK,
                reco::PFBlock::LINKTEST_ALL );
    
      for(IE ie = sortedTracks.begin(); ie != sortedTracks.end(); ++ie ) {
    unsigned jTrack = ie->second;

    // Don't consider already used tracks
    if ( !active[jTrack] ) continue;

    // The loop is on the other tracks !
    if ( jTrack == iTrack ) continue;
    
    // Check if the ECAL cluster closest to this track is 
    // indeed the current ECAL cluster. Only tracks not 
    // linked to an HCAL cluster are considered here
    std::multimap<double, unsigned> sortedECAL;
    block.associatedElements( jTrack,  linkData,
                  sortedECAL,
                  reco::PFBlockElement::ECAL,
                  reco::PFBlock::LINKTEST_ALL );
    if ( sortedECAL.begin()->second != thisEcal ) continue;

    // Check if this track is a muon
    bool thatIsAMuon = PFMuonAlgo::isMuon(elements[jTrack]);


    // Check if this track is not a fake
    bool rejectFake = false;
    reco::TrackRef trackRef = elements[jTrack].trackRef();
    if ( !thatIsAMuon && trackRef->ptError() > ptError_) { 
      double deficit = trackMomentum + trackRef->p() - clusterRef->energy();
      double resol = nSigmaTRACK_*neutralHadronEnergyResolution(trackMomentum+trackRef->p(),
                                    clusterRef->positionREP().Eta());
      resol *= (trackMomentum+trackRef->p());
      if ( deficit > nSigmaTRACK_*resol ) { 
        rejectFake = true;
        kTrack.push_back(jTrack);
        active[jTrack] = false;
        if ( debug_ )  
          std::cout << elements[jTrack] << std::endl
            << "is probably a fake (2) --> lock the track" 
            << std::endl; 
      }
    }
    if ( rejectFake ) continue;
    
    
    // Otherwise, add this track momentum to the total track momentum
    /* */
    // reco::TrackRef trackRef = elements[jTrack].trackRef();
    if ( !thatIsAMuon ) {   
      if ( debug_ ) 
        std::cout << "Track momentum increased from " << trackMomentum << " GeV "; 
      trackMomentum += trackRef->p();
      if ( debug_ ) {
        std::cout << "to " << trackMomentum << " GeV." << std::endl; 
        std::cout << "with " << elements[jTrack] << std::endl;
      }
    } else { 
      totalEcal -= muonECAL_[0];
      totalEcal = std::max(totalEcal, 0.);
    }

    // And create a charged particle candidate !

    tmpi.push_back(reconstructTrack( elements[jTrack] ));


    kTrack.push_back(jTrack);
    active[jTrack] = false;

    if ( thatIsAMuon ) { 
      (*pfCandidates_)[tmpi.back()].setEcalEnergy(clusterRef->energy(),
                              std::min(clusterRef->energy(),muonECAL_[0]));
      (*pfCandidates_)[tmpi.back()].setHcalEnergy( 0., 0. );
      (*pfCandidates_)[tmpi.back()].setHoEnergy( 0., 0. );
      (*pfCandidates_)[tmpi.back()].setPs1Energy( 0 );
      (*pfCandidates_)[tmpi.back()].setPs2Energy( 0 );
      (*pfCandidates_)[tmpi.back()].addElementInBlock( blockref, kTrack.back() );
    }
      }


      if ( debug_ ) std::cout << "Loop over all associated ECAL clusters" << std::endl; 
      // Loop over all ECAL linked clusters ordered by increasing distance.
      for(IE ie = ecalElems.begin(); ie != ecalElems.end(); ++ie ) {
    
    unsigned index = ie->second;
    PFBlockElement::Type type = elements[index].type();
    assert( type == PFBlockElement::ECAL );
    if ( debug_ ) std::cout << elements[index] << std::endl;
    
    // Just skip clusters already taken
    if ( debug_ && ! active[index] ) std::cout << "is not active  - ignore " << std::endl;
    if ( ! active[index] ) continue;

    // Just skip this cluster if it's closer to another track
    /* */
    block.associatedElements( index,  linkData,
                  sortedTracks,
                  reco::PFBlockElement::TRACK,
                  reco::PFBlock::LINKTEST_ALL );
    bool skip = true;
    for (unsigned ic=0; ic<kTrack.size();++ic) {
      if ( sortedTracks.begin()->second == kTrack[ic] ) { 
        skip = false;
        break;
      }
    }
    if ( debug_ && skip ) std::cout << "is closer to another track - ignore " << std::endl;
    if ( skip ) continue;
    /* */
        
    // The corresponding PFCluster and energy
    reco::PFClusterRef clusterRef = elements[index].clusterRef();
    assert( !clusterRef.isNull() );

    if ( debug_ ) {
      double dist = ie->first;
      std::cout <<"Ecal cluster with raw energy = " << clusterRef->energy() 
            <<" linked with distance = " << dist << std::endl;
    }
    /*
    double dist = ie->first;
    if ( !connectedToEcal && dist > 0.1 ) {
      std::cout << "Warning - first ECAL cluster at a distance of " << dist << "from the closest track!" << std::endl;
      cout<<"\telement "<<elements[index]<<" linked with distance = "<< dist <<endl;
      cout<<"\telement "<<elements[iTrack]<<" linked with distance = "<< dist <<endl;
    }
    */ 

        // Check the presence of preshower clusters in the vicinity
        // Preshower cluster closer to another ECAL cluster are ignored.
        //JOSH: This should use the association map already produced by the cluster corrector for consistency,
        //but should be ok for now
        vector<double> ps1Ene(1,static_cast<double>(0.));
        associatePSClusters(index, reco::PFBlockElement::PS1, block, elements, linkData, active, ps1Ene);
        vector<double> ps2Ene(1,static_cast<double>(0.));
        associatePSClusters(index, reco::PFBlockElement::PS2, block, elements, linkData, active, ps2Ene);        
        
    double ecalEnergy = clusterRef->correctedEnergy();
    if ( debug_ )
      std::cout << "Corrected ECAL(+PS) energy = " << ecalEnergy << std::endl;

    // Since the electrons were found beforehand, this track must be a hadron. Calibrate 
    // the energy under the hadron hypothesis.
    totalEcal += ecalEnergy;
    double previousCalibEcal = calibEcal;
    double previousSlopeEcal = slopeEcal;
    calibEcal = std::max(totalEcal,0.);
    calibHcal = 0.;
    calibration_->energyEmHad(trackMomentum,calibEcal,calibHcal,
                  clusterRef->positionREP().Eta(),
                  clusterRef->positionREP().Phi());
    if ( totalEcal > 0.) slopeEcal = calibEcal/totalEcal;

    if ( debug_ )
      std::cout << "The total calibrated energy so far amounts to = " << calibEcal << std::endl;
    

    // Stop the loop when adding more ECAL clusters ruins the compatibility
    if ( connectedToEcal && calibEcal - trackMomentum >= 0. ) {
    // if ( connectedToEcal && calibEcal - trackMomentum >=
    //     nSigmaECAL_*neutralHadronEnergyResolution(trackMomentum,clusterRef->positionREP().Eta())  ) { 
      calibEcal = previousCalibEcal;
      slopeEcal = previousSlopeEcal;
      totalEcal = calibEcal/slopeEcal;

      // Turn this last cluster in a photon 
      // (The PS clusters are already locked in "associatePSClusters")
      active[index] = false;

      // Find the associated tracks
      std::multimap<double, unsigned> assTracks;
      block.associatedElements( index,  linkData,
                    assTracks,
                    reco::PFBlockElement::TRACK,
                    reco::PFBlock::LINKTEST_ALL );


      unsigned tmpe = reconstructCluster( *clusterRef, ecalEnergy ); 
      (*pfCandidates_)[tmpe].setEcalEnergy( clusterRef->energy(), ecalEnergy );
      (*pfCandidates_)[tmpe].setHcalEnergy( 0., 0. );
      (*pfCandidates_)[tmpe].setHoEnergy( 0., 0. );
      (*pfCandidates_)[tmpe].setPs1Energy( ps1Ene[0] );
      (*pfCandidates_)[tmpe].setPs2Energy( ps2Ene[0] );
      (*pfCandidates_)[tmpe].addElementInBlock( blockref, index );
      // Check that there is at least one track
      if(assTracks.size()) {
        (*pfCandidates_)[tmpe].addElementInBlock( blockref, assTracks.begin()->second );
        
        // Assign the position of the track at the ECAL entrance
        const ::math::XYZPointF& chargedPosition = 
          dynamic_cast<const reco::PFBlockElementTrack*>(&elements[assTracks.begin()->second])->positionAtECALEntrance();
        (*pfCandidates_)[tmpe].setPositionAtECALEntrance(chargedPosition);
      }
      break;
    }

    // Lock used clusters.
    connectedToEcal = true;
    iEcal = index;
    active[index] = false;
    for (unsigned ic=0; ic<tmpi.size();++ic)  
      (*pfCandidates_)[tmpi[ic]].addElementInBlock( blockref, iEcal ); 


      } // Loop ecal elements
    
      bool bNeutralProduced = false;
  
      // Create a photon if the ecal energy is too large
      if( connectedToEcal ) {
    reco::PFClusterRef pivotalRef = elements[iEcal].clusterRef();

    double neutralEnergy = calibEcal - trackMomentum;

    /*
    // Check if there are other tracks linked to that ECAL
    for(IE ie = sortedTracks.begin(); ie != sortedTracks.end() && neutralEnergy > 0; ++ie ) {
      unsigned jTrack = ie->second;
      
      // The loop is on the other tracks !
      if ( jTrack == iTrack ) continue;

      // Check if the ECAL closest to this track is the current ECAL
      // Otherwise ignore this track in the neutral energy determination
      std::multimap<double, unsigned> sortedECAL;
      block.associatedElements( jTrack,  linkData,
                    sortedECAL,
                    reco::PFBlockElement::ECAL,
                    reco::PFBlock::LINKTEST_ALL );
      if ( sortedECAL.begin()->second != iEcal ) continue;
      
      // Check if this track is also linked to an HCAL 
      // (in which case it goes to the next loop and is ignored here)
      std::multimap<double, unsigned> sortedHCAL;
      block.associatedElements( jTrack,  linkData,
                    sortedHCAL,
                    reco::PFBlockElement::HCAL,
                    reco::PFBlock::LINKTEST_ALL );
      if ( sortedHCAL.size() ) continue;
      
      // Otherwise, subtract this track momentum from the ECAL energy 
      reco::TrackRef trackRef = elements[jTrack].trackRef();
      neutralEnergy -= trackRef->p();

    } // End other tracks
    */
    
    // Add a photon is the energy excess is large enough
    double resol = neutralHadronEnergyResolution(trackMomentum,pivotalRef->positionREP().Eta());
    resol *= trackMomentum;
    if ( neutralEnergy > std::max(0.5,nSigmaECAL_*resol) ) {
      neutralEnergy /= slopeEcal;
      unsigned tmpj = reconstructCluster( *pivotalRef, neutralEnergy ); 
      (*pfCandidates_)[tmpj].setEcalEnergy( pivotalRef->energy(), neutralEnergy );
      (*pfCandidates_)[tmpj].setHcalEnergy( 0., 0. );
      (*pfCandidates_)[tmpj].setHoEnergy( 0., 0. );
      (*pfCandidates_)[tmpj].setPs1Energy( 0. );
      (*pfCandidates_)[tmpj].setPs2Energy( 0. );
      (*pfCandidates_)[tmpj].addElementInBlock(blockref, iEcal);
      bNeutralProduced = true;
      for (unsigned ic=0; ic<kTrack.size();++ic) 
        (*pfCandidates_)[tmpj].addElementInBlock( blockref, kTrack[ic] ); 
    } // End neutral energy

    // Set elements in blocks and ECAL energies to all tracks
        for (unsigned ic=0; ic<tmpi.size();++ic) { 
      
      // Skip muons
      if ( (*pfCandidates_)[tmpi[ic]].particleId() == reco::PFCandidate::mu ) continue; 

      double fraction = (*pfCandidates_)[tmpi[ic]].trackRef()->p()/trackMomentum;
      double ecalCal = bNeutralProduced ? 
        (calibEcal-neutralEnergy*slopeEcal)*fraction : calibEcal*fraction;
      double ecalRaw = totalEcal*fraction;

      if (debug_) cout << "The fraction after photon supression is " << fraction << " calibrated ecal = " << ecalCal << endl;

      (*pfCandidates_)[tmpi[ic]].setEcalEnergy( ecalRaw, ecalCal );
      (*pfCandidates_)[tmpi[ic]].setHcalEnergy( 0., 0. );
      (*pfCandidates_)[tmpi[ic]].setHoEnergy( 0., 0. );
      (*pfCandidates_)[tmpi[ic]].setPs1Energy( 0 );
      (*pfCandidates_)[tmpi[ic]].setPs2Energy( 0 );
      (*pfCandidates_)[tmpi[ic]].addElementInBlock( blockref, kTrack[ic] );
    }

      } // End connected ECAL

      // Fill the element_in_block for tracks that are eventually linked to no ECAL clusters at all.
      for (unsigned ic=0; ic<tmpi.size();++ic) { 
    const PFCandidate& pfc = (*pfCandidates_)[tmpi[ic]];
    const PFCandidate::ElementsInBlocks& eleInBlocks = pfc.elementsInBlocks();
    if ( eleInBlocks.size() == 0 ) { 
      if ( debug_ )std::cout << "Single track / Fill element in block! " << std::endl;
      (*pfCandidates_)[tmpi[ic]].addElementInBlock( blockref, kTrack[ic] );
    }
      }

    }


    // In case several HCAL elements are linked to this track, 
    // unlinking all of them except the closest. 
    for(IE ie = hcalElems.begin(); ie != hcalElems.end(); ++ie ) {
      
      unsigned index = ie->second;
      
      PFBlockElement::Type type = elements[index].type();

      if(debug_) {
    double dist = block.dist(iTrack,index,linkData,reco::PFBlock::LINKTEST_ALL);
        cout<<"\telement "<<elements[index]<<" linked with distance "<< dist <<endl;
      }

      assert( type == PFBlockElement::HCAL );
      
      // all hcal clusters except the closest 
      // will be unlinked from the track
      if( !hcalFound ) { // closest hcal
        if(debug_) 
          cout<<"\t\tclosest hcal cluster, doing nothing"<<endl;
        
        hcalFound = true;
        
        // active[index] = false;
        // hcalUsed.push_back( index );
      }
      else { // other associated hcal
        // unlink from the track
        if(debug_) 
          cout<<"\t\tsecondary hcal cluster. unlinking"<<endl;
        block.setLink( iTrack, index, -1., linkData,
                       PFBlock::LINKTEST_RECHIT );
      }
    } //loop hcal elements   
  } // end of loop 1 on elements iEle of any type



  // deal with HF. 
  if( !(hfEmIs.empty() &&  hfHadIs.empty() ) ) {
    // there is at least one HF element in this block. 
    // so all elements must be HF.
    assert( hfEmIs.size() + hfHadIs.size() == elements.size() );

    if( elements.size() == 1 ) {
      //Auguste: HAD-only calibration here
      reco::PFClusterRef clusterRef = elements[0].clusterRef();
      double energyHF = 0.;
      double uncalibratedenergyHF = 0.;
      unsigned tmpi = 0;
      switch( clusterRef->layer() ) {
      case PFLayer::HF_EM:
    // do EM-only calibration here
    energyHF = clusterRef->energy();
    uncalibratedenergyHF = energyHF;
    if(thepfEnergyCalibrationHF_->getcalibHF_use()==true){
      energyHF = thepfEnergyCalibrationHF_->energyEm(uncalibratedenergyHF,
                             clusterRef->positionREP().Eta(),
                             clusterRef->positionREP().Phi()); 
    }
    tmpi = reconstructCluster( *clusterRef, energyHF );     
    (*pfCandidates_)[tmpi].setEcalEnergy( uncalibratedenergyHF, energyHF );
    (*pfCandidates_)[tmpi].setHcalEnergy( 0., 0.);
    (*pfCandidates_)[tmpi].setHoEnergy( 0., 0.);
    (*pfCandidates_)[tmpi].setPs1Energy( 0. );
    (*pfCandidates_)[tmpi].setPs2Energy( 0. );
    (*pfCandidates_)[tmpi].addElementInBlock( blockref, hfEmIs[0] );
    //std::cout << "HF EM alone ! " << energyHF << std::endl;
    break;
      case PFLayer::HF_HAD:
    // do HAD-only calibration here
    energyHF = clusterRef->energy();
    uncalibratedenergyHF = energyHF;
    if(thepfEnergyCalibrationHF_->getcalibHF_use()==true){
      energyHF = thepfEnergyCalibrationHF_->energyHad(uncalibratedenergyHF,
                             clusterRef->positionREP().Eta(),
                             clusterRef->positionREP().Phi()); 
    }
    tmpi = reconstructCluster( *clusterRef, energyHF );     
    (*pfCandidates_)[tmpi].setHcalEnergy( uncalibratedenergyHF, energyHF );
    (*pfCandidates_)[tmpi].setEcalEnergy( 0., 0.);
    (*pfCandidates_)[tmpi].setHoEnergy( 0., 0.);
    (*pfCandidates_)[tmpi].setPs1Energy( 0. );
    (*pfCandidates_)[tmpi].setPs2Energy( 0. );
    (*pfCandidates_)[tmpi].addElementInBlock( blockref, hfHadIs[0] );
    //std::cout << "HF Had alone ! " << energyHF << std::endl;
    break;
      default:
    assert(0);
      }
    }
    else if(  elements.size() == 2 ) {
      //Auguste: EM + HAD calibration here
      reco::PFClusterRef c0 = elements[0].clusterRef();
      reco::PFClusterRef c1 = elements[1].clusterRef();
      // 2 HF elements. Must be in each layer.
      reco::PFClusterRef cem =  ( c0->layer() == PFLayer::HF_EM ? c0 : c1 );
      reco::PFClusterRef chad = ( c1->layer() == PFLayer::HF_HAD ? c1 : c0 );
      
      if( cem->layer() != PFLayer::HF_EM || chad->layer() != PFLayer::HF_HAD ) {
    cerr<<"Error: 2 elements, but not 1 HFEM and 1 HFHAD"<<endl;
    cerr<<block<<endl;
    assert(0);
//  assert( c1->layer()== PFLayer::HF_EM &&
//      c0->layer()== PFLayer::HF_HAD );
      }    
      // do EM+HAD calibration here
      double energyHfEm = cem->energy();
      double energyHfHad = chad->energy();
      double uncalibratedenergyHFEm = energyHfEm;
      double uncalibratedenergyHFHad = energyHfHad;
      if(thepfEnergyCalibrationHF_->getcalibHF_use()==true){
    
    energyHfEm = thepfEnergyCalibrationHF_->energyEmHad(uncalibratedenergyHFEm,
                                0.0,
                                c0->positionREP().Eta(),
                                c0->positionREP().Phi()); 
    energyHfHad = thepfEnergyCalibrationHF_->energyEmHad(0.0,
                                 uncalibratedenergyHFHad,
                                 c1->positionREP().Eta(),
                                 c1->positionREP().Phi()); 
      }
      unsigned tmpi = reconstructCluster( *chad, energyHfEm+energyHfHad );     
      (*pfCandidates_)[tmpi].setEcalEnergy( uncalibratedenergyHFEm, energyHfEm );
      (*pfCandidates_)[tmpi].setHcalEnergy( uncalibratedenergyHFHad, energyHfHad);
      (*pfCandidates_)[tmpi].setHoEnergy( 0., 0.);
      (*pfCandidates_)[tmpi].setPs1Energy( 0. );
      (*pfCandidates_)[tmpi].setPs2Energy( 0. );
      (*pfCandidates_)[tmpi].addElementInBlock( blockref, hfEmIs[0] );
      (*pfCandidates_)[tmpi].addElementInBlock( blockref, hfHadIs[0] );
      //std::cout << "HF EM+HAD found ! " << energyHfEm << " " << energyHfHad << std::endl;     
    }
    else {
      // 1 HF element in the block, 
      // but number of elements not equal to 1 or 2 
      cerr<<"Warning: HF, but n elem different from 1 or 2"<<endl;
      cerr<<block<<endl;
//       assert(0);
//       cerr<<"not ready for navigation in the HF!"<<endl;
    }
  }



  if(debug_) { 
    cout<<endl;
    cout<<endl<<"--------------- loop hcal ---------------------"<<endl;
  }
  
  // track information:
  // trackRef
  // ecal energy
  // hcal energy
  // rescale 

  for(unsigned i=0; i<hcalIs.size(); i++) {
    
    unsigned iHcal= hcalIs[i];    
    PFBlockElement::Type type = elements[iHcal].type();

    assert( type == PFBlockElement::HCAL );

    if(debug_) cout<<endl<<elements[iHcal]<<endl;

    // vector<unsigned> elementIndices;
    // elementIndices.push_back(iHcal);

    // associated tracks
    std::multimap<double, unsigned> sortedTracks;
    block.associatedElements( iHcal,  linkData,
                  sortedTracks,
                  reco::PFBlockElement::TRACK,
                  reco::PFBlock::LINKTEST_ALL );

    std::multimap< unsigned, std::pair<double, unsigned> > associatedEcals;

    std::map< unsigned, std::pair<double, double> > associatedPSs;
 
    std::multimap<double, std::pair<unsigned,bool> > associatedTracks;
    
    // A temporary maps for ECAL satellite clusters
    std::multimap<double,std::pair<unsigned,::math::XYZVector> > ecalSatellites;
    std::pair<unsigned,::math::XYZVector> fakeSatellite = make_pair(iHcal,::math::XYZVector(0.,0.,0.));
    ecalSatellites.insert( make_pair(-1., fakeSatellite) );

    std::multimap< unsigned, std::pair<double, unsigned> > associatedHOs;
    
    PFClusterRef hclusterref = elements[iHcal].clusterRef();
    assert(!hclusterref.isNull() );


    //if there is no track attached to that HCAL, then do not
    //reconstruct an HCAL alone, check if it can be recovered 
    //first
    
    // if no associated tracks, create a neutral hadron
    //if(sortedTracks.empty() ) {

    if( sortedTracks.empty() ) {
      if(debug_) 
        cout<<"\tno associated tracks, keep for later"<<endl;
      continue;
    }

    // Lock the HCAL cluster
    active[iHcal] = false;


    // in the following, tracks are associated to this hcal cluster.
    // will look for an excess of energy in the calorimeters w/r to 
    // the charged energy, and turn this excess into a neutral hadron or 
    // a photon.

    if(debug_) cout<<"\t"<<sortedTracks.size()<<" associated tracks:"<<endl;

    double totalChargedMomentum = 0;
    double sumpError2 = 0.;
    double totalHO = 0.;
    double totalEcal = 0.;
    double totalHcal = hclusterref->energy();
    vector<double> hcalP;
    vector<double> hcalDP;
    vector<unsigned> tkIs;
    double maxDPovP = -9999.;
    
    //Keep track of how much energy is assigned to calorimeter-vs-track energy/momentum excess
    vector< unsigned > chargedHadronsIndices;
    vector< unsigned > chargedHadronsInBlock;
    double mergedNeutralHadronEnergy = 0;
    double mergedPhotonEnergy = 0;
    double muonHCALEnergy = 0.;
    double muonECALEnergy = 0.;
    double muonHCALError = 0.;
    double muonECALError = 0.;
    unsigned nMuons = 0; 


    ::math::XYZVector photonAtECAL(0.,0.,0.);
    std::vector<std::pair<unsigned,::math::XYZVector> > ecalClusters;
    double sumEcalClusters=0;
    ::math::XYZVector hadronDirection(hclusterref->position().X(),
                    hclusterref->position().Y(),
                    hclusterref->position().Z());
    hadronDirection = hadronDirection.Unit();
    ::math::XYZVector hadronAtECAL = totalHcal * hadronDirection;

    // Loop over all tracks associated to this HCAL cluster
    for(IE ie = sortedTracks.begin(); ie != sortedTracks.end(); ++ie ) {

      unsigned iTrack = ie->second;

      // Check the track has not already been used (e.g., in electrons, conversions...)
      if ( !active[iTrack] ) continue;
      // Sanity check 1
      PFBlockElement::Type type = elements[iTrack].type();
      assert( type == reco::PFBlockElement::TRACK );
      // Sanity check 2
      reco::TrackRef trackRef = elements[iTrack].trackRef();
      assert( !trackRef.isNull() ); 

      // The direction at ECAL entrance
      const ::math::XYZPointF& chargedPosition = 
    dynamic_cast<const reco::PFBlockElementTrack*>(&elements[iTrack])->positionAtECALEntrance();
      ::math::XYZVector chargedDirection(chargedPosition.X(),chargedPosition.Y(),chargedPosition.Z());
      chargedDirection = chargedDirection.Unit();

      // look for ECAL elements associated to iTrack (associated to iHcal)
      std::multimap<double, unsigned> sortedEcals;
      block.associatedElements( iTrack,  linkData,
                                sortedEcals,
                reco::PFBlockElement::ECAL,
                reco::PFBlock::LINKTEST_ALL );

      if(debug_) cout<<"\t\t\tnumber of Ecal elements linked to this track: "
                     <<sortedEcals.size()<<endl;     

      // look for HO elements associated to iTrack (associated to iHcal)
      std::multimap<double, unsigned> sortedHOs;
      if (useHO_) {
    block.associatedElements( iTrack,  linkData,
                  sortedHOs,
                  reco::PFBlockElement::HO,
                  reco::PFBlock::LINKTEST_ALL );

      }
      if(debug_) 
    cout<<"PFAlgo : number of HO elements linked to this track: "
        <<sortedHOs.size()<<endl;
      
      // Create a PF Candidate right away if the track is a tight muon
      reco::MuonRef muonRef = elements[iTrack].muonRef();


      bool thisIsAMuon = PFMuonAlgo::isMuon(elements[iTrack]);
      bool thisIsAnIsolatedMuon = PFMuonAlgo::isIsolatedMuon(elements[iTrack]);
      bool thisIsALooseMuon = false;


      if(!thisIsAMuon ) {
    thisIsALooseMuon = PFMuonAlgo::isLooseMuon(elements[iTrack]);
      }


      if ( thisIsAMuon ) {
    if ( debug_ ) { 
      std::cout << "\t\tThis track is identified as a muon - remove it from the stack" << std::endl;
      std::cout << "\t\t" << elements[iTrack] << std::endl;
    }

    // Create a muon.

    unsigned tmpi = reconstructTrack( elements[iTrack] );


    (*pfCandidates_)[tmpi].addElementInBlock( blockref, iTrack );
    (*pfCandidates_)[tmpi].addElementInBlock( blockref, iHcal );
    double muonHcal = std::min(muonHCAL_[0]+muonHCAL_[1],totalHcal);

    // if muon is isolated and muon momentum exceeds the calo energy, absorb the calo energy    
    // rationale : there has been a EM showering by the muon in the calorimeter - or the coil -
    // and we don't want to double count the energy 
    bool letMuonEatCaloEnergy = false;

    if(thisIsAnIsolatedMuon){
      // The factor 1.3 is the e/pi factor in HCAL...
      double totalCaloEnergy = totalHcal / 1.30;
      unsigned iEcal = 0;
      if( !sortedEcals.empty() ) { 
        iEcal = sortedEcals.begin()->second; 
        PFClusterRef eclusterref = elements[iEcal].clusterRef();
        totalCaloEnergy += eclusterref->energy();
      }

      if (useHO_) {
        // The factor 1.3 is assumed to be the e/pi factor in HO, too.
        unsigned iHO = 0;
        if( !sortedHOs.empty() ) { 
          iHO = sortedHOs.begin()->second; 
          PFClusterRef eclusterref = elements[iHO].clusterRef();
          totalCaloEnergy += eclusterref->energy() / 1.30;
        }
      }

      // std::cout << "muon p / total calo = " << muonRef->p() << " "  << (pfCandidates_->back()).p() << " " << totalCaloEnergy << std::endl;
      //if(muonRef->p() > totalCaloEnergy ) letMuonEatCaloEnergy = true;
      if( (pfCandidates_->back()).p() > totalCaloEnergy ) letMuonEatCaloEnergy = true;
    }

    if(letMuonEatCaloEnergy) muonHcal = totalHcal;
    double muonEcal =0.;
    unsigned iEcal = 0;
    if( !sortedEcals.empty() ) { 
      iEcal = sortedEcals.begin()->second; 
      PFClusterRef eclusterref = elements[iEcal].clusterRef();
      (*pfCandidates_)[tmpi].addElementInBlock( blockref, iEcal);
      muonEcal = std::min(muonECAL_[0]+muonECAL_[1],eclusterref->energy());
      if(letMuonEatCaloEnergy) muonEcal = eclusterref->energy();
      // If the muon expected energy accounts for the whole ecal cluster energy, lock the ecal cluster
      if ( eclusterref->energy() - muonEcal  < 0.2 ) active[iEcal] = false;
      (*pfCandidates_)[tmpi].setEcalEnergy(eclusterref->energy(), muonEcal);
    }
    unsigned iHO = 0;
    double muonHO =0.;
    if (useHO_) {
      if( !sortedHOs.empty() ) { 
        iHO = sortedHOs.begin()->second; 
        PFClusterRef hoclusterref = elements[iHO].clusterRef();
        (*pfCandidates_)[tmpi].addElementInBlock( blockref, iHO);
        muonHO = std::min(muonHO_[0]+muonHO_[1],hoclusterref->energy());
        if(letMuonEatCaloEnergy) muonHO = hoclusterref->energy();
        // If the muon expected energy accounts for the whole HO cluster energy, lock the HO cluster
        if ( hoclusterref->energy() - muonHO  < 0.2 ) active[iHO] = false;      
        (*pfCandidates_)[tmpi].setHcalEnergy(totalHcal, muonHcal);
        (*pfCandidates_)[tmpi].setHoEnergy(hoclusterref->energy(), muonHO);
      }
    } else {
      (*pfCandidates_)[tmpi].setHcalEnergy(totalHcal, muonHcal);
    }

    if(letMuonEatCaloEnergy){
      muonHCALEnergy += totalHcal;
      if (useHO_) muonHCALEnergy +=muonHO;
      muonHCALError += 0.;
      muonECALEnergy += muonEcal;
      muonECALError += 0.;
      photonAtECAL -= muonEcal*chargedDirection;
      hadronAtECAL -= totalHcal*chargedDirection;
      if ( !sortedEcals.empty() ) active[iEcal] = false;
      active[iHcal] = false;
      if (useHO_ && !sortedHOs.empty() ) active[iHO] = false;
    }
    else{
    // Estimate of the energy deposit & resolution in the calorimeters
      muonHCALEnergy += muonHCAL_[0];
      muonHCALError += muonHCAL_[1]*muonHCAL_[1];
      if ( muonHO > 0. ) { 
        muonHCALEnergy += muonHO_[0];
        muonHCALError += muonHO_[1]*muonHO_[1];
      }
      muonECALEnergy += muonECAL_[0];
      muonECALError += muonECAL_[1]*muonECAL_[1];
      // ... as well as the equivalent "momentum" at ECAL entrance
      photonAtECAL -= muonECAL_[0]*chargedDirection;
      hadronAtECAL -= muonHCAL_[0]*chargedDirection;
    }

    // Remove it from the stack
    active[iTrack] = false;
    // Go to next track
    continue;
      }
 
      //

      if(debug_) cout<<"\t\t"<<elements[iTrack]<<endl;

      // introduce  tracking errors 
      double trackMomentum = trackRef->p();
      totalChargedMomentum += trackMomentum; 

      // If the track is not a tight muon, but still resembles a muon
      // keep it for later for blocks with too large a charged energy
      if ( thisIsALooseMuon && !thisIsAMuon ) nMuons += 1;  

      // ... and keep anyway the pt error for possible fake rejection
      // ... blow up errors of 5th anf 4th iteration, to reject those
      // ... tracks first (in case it's needed)
      double Dpt = trackRef->ptError();
      double blowError = 1.;
      switch (trackRef->algo()) {
      case TrackBase::ctf:
      case TrackBase::initialStep:
      case TrackBase::lowPtTripletStep:
      case TrackBase::pixelPairStep:
      case TrackBase::detachedTripletStep:
      case TrackBase::mixedTripletStep:
      case TrackBase::jetCoreRegionalStep:
      case TrackBase::muonSeededStepInOut:
      case TrackBase::muonSeededStepOutIn:
    blowError = 1.;
    break;
      case TrackBase::pixelLessStep:
    blowError = factors45_[0];
    break;
      case TrackBase::tobTecStep:
    blowError = factors45_[1];
    break;
      case reco::TrackBase::hltIter0:
      case reco::TrackBase::hltIter1:
      case reco::TrackBase::hltIter2:
      case reco::TrackBase::hltIter3:
    blowError = 1.;
    break;
      case reco::TrackBase::hltIter4:
    blowError = factors45_[0];
    break;
      case reco::TrackBase::hltIterX:
    blowError = 1.;
    break;
      default:
    blowError = 1E9;
    break;
      }
      // except if it is from an interaction
      bool isPrimaryOrSecondary = isFromSecInt(elements[iTrack], "all");

      if ( isPrimaryOrSecondary ) blowError = 1.;

      std::pair<unsigned,bool> tkmuon = make_pair(iTrack,thisIsALooseMuon);
      associatedTracks.insert( make_pair(-Dpt*blowError, tkmuon) );     
 
      // Also keep the total track momentum error for comparison with the calo energy
      double Dp = trackRef->qoverpError()*trackMomentum*trackMomentum;
      sumpError2 += Dp*Dp;

      bool connectedToEcal = false; // Will become true if there is at least one ECAL cluster connected
      if( !sortedEcals.empty() ) 
        { // start case: at least one ecal element associated to iTrack
      
      // Loop over all connected ECAL clusters
      for ( IE iec=sortedEcals.begin(); 
        iec!=sortedEcals.end(); ++iec ) {

        unsigned iEcal = iec->second;
        double dist = iec->first;
        
        // Ignore ECAL cluters already used
        if( !active[iEcal] ) { 
          if(debug_) cout<<"\t\tcluster locked"<<endl;          
          continue;
        }

        // Sanity checks
        PFBlockElement::Type type = elements[ iEcal ].type();
        assert( type == PFBlockElement::ECAL );
        PFClusterRef eclusterref = elements[iEcal].clusterRef();
        assert(!eclusterref.isNull() );
          
        // Check if this ECAL is not closer to another track - ignore it in that case
        std::multimap<double, unsigned> sortedTracksEcal;
        block.associatedElements( iEcal,  linkData,
                      sortedTracksEcal,
                      reco::PFBlockElement::TRACK,
                      reco::PFBlock::LINKTEST_ALL );
        unsigned jTrack = sortedTracksEcal.begin()->second;
        if ( jTrack != iTrack ) continue; 

        // double chi2Ecal = block.chi2(jTrack,iEcal,linkData,
        //                              reco::PFBlock::LINKTEST_ALL);
        double distEcal = block.dist(jTrack,iEcal,linkData,
                     reco::PFBlock::LINKTEST_ALL);
                     
        // totalEcal += eclusterref->energy();
        // float ecalEnergyUnCalibrated = eclusterref->energy();
        //std::cout << "Ecal Uncalibrated " << ecalEnergyUnCalibrated << std::endl;

        float ecalEnergyCalibrated = eclusterref->correctedEnergy();
        ::math::XYZVector photonDirection(eclusterref->position().X(),
                        eclusterref->position().Y(),
                        eclusterref->position().Z());
        photonDirection = photonDirection.Unit();

        if ( !connectedToEcal ) { // This is the closest ECAL cluster - will add its energy later
          
          if(debug_) cout<<"\t\t\tclosest: "
                 <<elements[iEcal]<<endl;
          
          connectedToEcal = true;
          // PJ 1st-April-09 : To be done somewhere !!! (Had to comment it, but it is needed)
          // currentChargedHadron.addElementInBlock( blockref, iEcal );
       
          std::pair<unsigned,::math::XYZVector> satellite = 
        make_pair(iEcal,ecalEnergyCalibrated*photonDirection);
          ecalSatellites.insert( make_pair(-1., satellite) );

        } else { // Keep satellite clusters for later
          
          std::pair<unsigned,::math::XYZVector> satellite = 
        make_pair(iEcal,ecalEnergyCalibrated*photonDirection);
          ecalSatellites.insert( make_pair(dist, satellite) );
          
        }
        
        std::pair<double, unsigned> associatedEcal 
          = make_pair( distEcal, iEcal );
        associatedEcals.insert( make_pair(iTrack, associatedEcal) );

      } // End loop ecal associated to iTrack
    } // end case: at least one ecal element associated to iTrack

      if( useHO_ && !sortedHOs.empty() ) 
        { // start case: at least one ho element associated to iTrack
      
      // Loop over all connected HO clusters
      for ( IE ieho=sortedHOs.begin(); ieho!=sortedHOs.end(); ++ieho ) {

        unsigned iHO = ieho->second;
        double distHO = ieho->first;
        
        // Ignore HO cluters already used
        if( !active[iHO] ) { 
          if(debug_) cout<<"\t\tcluster locked"<<endl;          
          continue;
        }
        
        // Sanity checks
        PFBlockElement::Type type = elements[ iHO ].type();
        assert( type == PFBlockElement::HO );
        PFClusterRef hoclusterref = elements[iHO].clusterRef();
        assert(!hoclusterref.isNull() );
        
        // Check if this HO is not closer to another track - ignore it in that case
        std::multimap<double, unsigned> sortedTracksHO;
        block.associatedElements( iHO,  linkData,
                      sortedTracksHO,
                      reco::PFBlockElement::TRACK,
                      reco::PFBlock::LINKTEST_ALL );
        unsigned jTrack = sortedTracksHO.begin()->second;
        if ( jTrack != iTrack ) continue; 

        // double chi2HO = block.chi2(jTrack,iHO,linkData,
        //                              reco::PFBlock::LINKTEST_ALL);
        //double distHO = block.dist(jTrack,iHO,linkData,
        //             reco::PFBlock::LINKTEST_ALL);
        
        // Increment the total energy by the energy of this HO cluster
        totalHO += hoclusterref->energy();
        active[iHO] = false;
        // Keep track for later reference in the PFCandidate.
        std::pair<double, unsigned> associatedHO
          = make_pair( distHO, iHO );
        associatedHOs.insert( make_pair(iTrack, associatedHO) );
        
      } // End loop ho associated to iTrack
    } // end case: at least one ho element associated to iTrack
      
      
    } // end loop on tracks associated to hcal element iHcal

    // Include totalHO in totalHCAL for the time being (it will be calibrated as HCAL energy)
    totalHcal += totalHO;
    
    // test compatibility between calo and tracker. //////////////

    double caloEnergy = 0.;
    double slopeEcal = 1.0;
    double calibEcal = 0.;
    double calibHcal = 0.;
    hadronDirection = hadronAtECAL.Unit();

    // Determine the expected calo resolution from the total charged momentum
    double Caloresolution = neutralHadronEnergyResolution( totalChargedMomentum, hclusterref->positionREP().Eta());    
    Caloresolution *= totalChargedMomentum;
    // Account for muons
    Caloresolution = std::sqrt(Caloresolution*Caloresolution + muonHCALError + muonECALError);
    totalEcal -= std::min(totalEcal,muonECALEnergy);
    totalHcal -= std::min(totalHcal,muonHCALEnergy);
    if ( totalEcal < 1E-9 ) photonAtECAL = ::math::XYZVector(0.,0.,0.);
    if ( totalHcal < 1E-9 ) hadronAtECAL = ::math::XYZVector(0.,0.,0.);

    // Loop over all ECAL satellites, starting for the closest to the various tracks
    // and adding other satellites until saturation of the total track momentum
    // Note : for code simplicity, the first element of the loop is the HCAL cluster
    // with 0 energy in the ECAL
    for ( IS is = ecalSatellites.begin(); is != ecalSatellites.end(); ++is ) { 

      // Add the energy of this ECAL cluster
      double previousCalibEcal = calibEcal;
      double previousCalibHcal = calibHcal;
      double previousCaloEnergy = caloEnergy;
      double previousSlopeEcal = slopeEcal;
      ::math::XYZVector previousHadronAtECAL = hadronAtECAL;
      //
      totalEcal += sqrt(is->second.second.Mag2());
      photonAtECAL += is->second.second;
      calibEcal = std::max(0.,totalEcal);
      calibHcal = std::max(0.,totalHcal);
      hadronAtECAL = calibHcal * hadronDirection;
      // Calibrate ECAL and HCAL energy under the hadron hypothesis.
      calibration_->energyEmHad(totalChargedMomentum,calibEcal,calibHcal,
                hclusterref->positionREP().Eta(),
                hclusterref->positionREP().Phi());
      caloEnergy = calibEcal+calibHcal;
      if ( totalEcal > 0.) slopeEcal = calibEcal/totalEcal;

      hadronAtECAL = calibHcal * hadronDirection; 
      
      // Continue looping until all closest clusters are exhausted and as long as
      // the calorimetric energy does not saturate the total momentum.
      if ( is->first < 0. || caloEnergy - totalChargedMomentum <= 0. ) { 
    if(debug_) cout<<"\t\t\tactive, adding "<<is->second.second
               <<" to ECAL energy, and locking"<<endl;
    active[is->second.first] = false;
        double clusterEnergy=sqrt(is->second.second.Mag2());
        if(clusterEnergy>50) {
          ecalClusters.push_back(is->second);
          sumEcalClusters+=clusterEnergy;
    }
        continue;
      }

      // Otherwise, do not consider the last cluster examined and exit.
      // active[is->second.first] = true;
      totalEcal -= sqrt(is->second.second.Mag2());
      photonAtECAL -= is->second.second;
      calibEcal = previousCalibEcal;
      calibHcal = previousCalibHcal;
      hadronAtECAL = previousHadronAtECAL;
      slopeEcal = previousSlopeEcal;
      caloEnergy = previousCaloEnergy;

      break;

    }

    // Sanity check !
    assert(caloEnergy>=0);


    // And now check for hadronic energy excess...

    //colin: resolution should be measured on the ecal+hcal case. 
    // however, the result will be close. 
    // double Caloresolution = neutralHadronEnergyResolution( caloEnergy );
    // Caloresolution *= caloEnergy;
    // PJ The resolution is on the expected charged calo energy !
    //double Caloresolution = neutralHadronEnergyResolution( totalChargedMomentum, hclusterref->positionREP().Eta());
    //Caloresolution *= totalChargedMomentum;
    // that of the charged particles linked to the cluster!

    /* */
    if ( totalChargedMomentum - caloEnergy > nSigmaTRACK_*Caloresolution ) {    

      /* 
      cout<<"\tCompare Calo Energy to total charged momentum "<<endl;
      cout<<"\t\tsum p    = "<<totalChargedMomentum<<" +- "<<sqrt(sumpError2)<<endl;
      cout<<"\t\tsum ecal = "<<totalEcal<<endl;
      cout<<"\t\tsum hcal = "<<totalHcal<<endl;
      cout<<"\t\t => Calo Energy = "<<caloEnergy<<" +- "<<Caloresolution<<endl;
      cout<<"\t\t => Calo Energy- total charged momentum = "
         <<caloEnergy-totalChargedMomentum<<" +- "<<TotalError<<endl;
      cout<<endl;
      cout << "\t\tNumber/momentum of muons found in the block : " << nMuons << std::endl;
      */
      // First consider loose muons
      if ( nMuons > 0 ) { 
    for ( IT it = associatedTracks.begin(); it != associatedTracks.end(); ++it ) { 
      unsigned iTrack = it->second.first;
      // Only active tracks
      if ( !active[iTrack] ) continue;
      // Only muons
      if ( !it->second.second ) continue;

      double trackMomentum = elements[it->second.first].trackRef()->p();

      // look for ECAL elements associated to iTrack (associated to iHcal)
      std::multimap<double, unsigned> sortedEcals;
      block.associatedElements( iTrack,  linkData,
                    sortedEcals,
                    reco::PFBlockElement::ECAL,
                    reco::PFBlock::LINKTEST_ALL );
      std::multimap<double, unsigned> sortedHOs;
      block.associatedElements( iTrack,  linkData,
                    sortedHOs,
                    reco::PFBlockElement::HO,
                    reco::PFBlock::LINKTEST_ALL );

      //Here allow for loose muons! 
      unsigned tmpi = reconstructTrack( elements[iTrack],true);

      (*pfCandidates_)[tmpi].addElementInBlock( blockref, iTrack );
      (*pfCandidates_)[tmpi].addElementInBlock( blockref, iHcal );
      double muonHcal = std::min(muonHCAL_[0]+muonHCAL_[1],totalHcal-totalHO);
      double muonHO = 0.;
      (*pfCandidates_)[tmpi].setHcalEnergy(totalHcal,muonHcal);
      if( !sortedEcals.empty() ) { 
        unsigned iEcal = sortedEcals.begin()->second; 
        PFClusterRef eclusterref = elements[iEcal].clusterRef();
        (*pfCandidates_)[tmpi].addElementInBlock( blockref, iEcal);
        double muonEcal = std::min(muonECAL_[0]+muonECAL_[1],eclusterref->energy());
        (*pfCandidates_)[tmpi].setEcalEnergy(eclusterref->energy(),muonEcal);
      }
      if( useHO_ && !sortedHOs.empty() ) { 
        unsigned iHO = sortedHOs.begin()->second; 
        PFClusterRef hoclusterref = elements[iHO].clusterRef();
        (*pfCandidates_)[tmpi].addElementInBlock( blockref, iHO);
        muonHO = std::min(muonHO_[0]+muonHO_[1],hoclusterref->energy());
        (*pfCandidates_)[tmpi].setHcalEnergy(max(totalHcal-totalHO,0.0),muonHcal);
        (*pfCandidates_)[tmpi].setHoEnergy(hoclusterref->energy(),muonHO);
      }
      // Remove it from the block
      const ::math::XYZPointF& chargedPosition = 
        dynamic_cast<const reco::PFBlockElementTrack*>(&elements[it->second.first])->positionAtECALEntrance();    
      ::math::XYZVector chargedDirection(chargedPosition.X(), chargedPosition.Y(), chargedPosition.Z());
      chargedDirection = chargedDirection.Unit();
      totalChargedMomentum -= trackMomentum;
      // Update the calo energies
      if ( totalEcal > 0. ) 
        calibEcal -= std::min(calibEcal,muonECAL_[0]*calibEcal/totalEcal);
      if ( totalHcal > 0. ) 
        calibHcal -= std::min(calibHcal,muonHCAL_[0]*calibHcal/totalHcal);
      totalEcal -= std::min(totalEcal,muonECAL_[0]);
      totalHcal -= std::min(totalHcal,muonHCAL_[0]);
      if ( totalEcal > muonECAL_[0] ) photonAtECAL -= muonECAL_[0] * chargedDirection;
      if ( totalHcal > muonHCAL_[0] ) hadronAtECAL -= muonHCAL_[0]*calibHcal/totalHcal * chargedDirection;
      caloEnergy = calibEcal+calibHcal;
      muonHCALEnergy += muonHCAL_[0];
      muonHCALError += muonHCAL_[1]*muonHCAL_[1];
      if ( muonHO > 0. ) { 
        muonHCALEnergy += muonHO_[0];
        muonHCALError += muonHO_[1]*muonHO_[1];
        if ( totalHcal > 0. ) { 
          calibHcal -= std::min(calibHcal,muonHO_[0]*calibHcal/totalHcal);
          totalHcal -= std::min(totalHcal,muonHO_[0]);
        }
      }
      muonECALEnergy += muonECAL_[0];
      muonECALError += muonECAL_[1]*muonECAL_[1];
      active[iTrack] = false;
      // Stop the loop whenever enough muons are removed
      //Commented out: Keep looking for muons since they often come in pairs -Matt
      //if ( totalChargedMomentum < caloEnergy ) break; 
    }
    // New calo resolution.
    Caloresolution = neutralHadronEnergyResolution( totalChargedMomentum, hclusterref->positionREP().Eta());    
    Caloresolution *= totalChargedMomentum;
    Caloresolution = std::sqrt(Caloresolution*Caloresolution + muonHCALError + muonECALError);
      }
    }
    /*    
    if(debug_){
      cout<<"\tBefore Cleaning "<<endl;
      cout<<"\tCompare Calo Energy to total charged momentum "<<endl;
      cout<<"\t\tsum p    = "<<totalChargedMomentum<<" +- "<<sqrt(sumpError2)<<endl;
      cout<<"\t\tsum ecal = "<<totalEcal<<endl;
      cout<<"\t\tsum hcal = "<<totalHcal<<endl;
      cout<<"\t\t => Calo Energy = "<<caloEnergy<<" +- "<<Caloresolution<<endl;
      cout<<"\t\t => Calo Energy- total charged momentum = "
      <<caloEnergy-totalChargedMomentum<<" +- "<<TotalError<<endl;
      cout<<endl;
    }
    */

    // Second consider bad tracks (if still needed after muon removal)
    unsigned corrTrack = 10000000;
    double corrFact = 1.;

    if (rejectTracks_Bad_ && 
    totalChargedMomentum - caloEnergy > nSigmaTRACK_*Caloresolution) { 
      
      for ( IT it = associatedTracks.begin(); it != associatedTracks.end(); ++it ) { 
    unsigned iTrack = it->second.first;
    // Only active tracks
    if ( !active[iTrack] ) continue;
    const reco::TrackRef& trackref = elements[it->second.first].trackRef();

    double dptRel = fabs(it->first)/trackref->pt()*100;
    bool isSecondary = isFromSecInt(elements[iTrack], "secondary");
    bool isPrimary = isFromSecInt(elements[iTrack], "primary");

    if ( isSecondary && dptRel < dptRel_DispVtx_ ) continue;
    // Consider only bad tracks
    if ( fabs(it->first) < ptError_ ) break;
    // What would become the block charged momentum if this track were removed
    double wouldBeTotalChargedMomentum = 
      totalChargedMomentum - trackref->p();
    // Reject worst tracks, as long as the total charged momentum 
    // is larger than the calo energy

    if ( wouldBeTotalChargedMomentum > caloEnergy ) { 

      if (debug_ && isSecondary) {
        cout << "In bad track rejection step dptRel = " << dptRel << " dptRel_DispVtx_ = " << dptRel_DispVtx_ << endl;
        cout << "The calo energy would be still smaller even without this track but it is attached to a NI"<< endl;
      }


      if(isPrimary || (isSecondary && dptRel < dptRel_DispVtx_)) continue;
      active[iTrack] = false;
      totalChargedMomentum = wouldBeTotalChargedMomentum;
      if ( debug_ )
        std::cout << "\tElement  " << elements[iTrack] 
              << " rejected (Dpt = " << -it->first 
              << " GeV/c, algo = " << trackref->algo() << ")" << std::endl;
    // Just rescale the nth worst track momentum to equalize the calo energy
    } else {    
      if(isPrimary) break;
      corrTrack = iTrack;
      corrFact = (caloEnergy - wouldBeTotalChargedMomentum)/elements[it->second.first].trackRef()->p();
      if ( trackref->p()*corrFact < 0.05 ) { 
        corrFact = 0.;
        active[iTrack] = false;
      }
      totalChargedMomentum -= trackref->p()*(1.-corrFact);
      if ( debug_ ) 
        std::cout << "\tElement  " << elements[iTrack] 
              << " (Dpt = " << -it->first 
              << " GeV/c, algo = " << trackref->algo() 
              << ") rescaled by " << corrFact 
              << " Now the total charged momentum is " << totalChargedMomentum  << endl;
      break;
    }
      }
    }

    // New determination of the calo and track resolution avec track deletion/rescaling.
    Caloresolution = neutralHadronEnergyResolution( totalChargedMomentum, hclusterref->positionREP().Eta());    
    Caloresolution *= totalChargedMomentum;
    Caloresolution = std::sqrt(Caloresolution*Caloresolution + muonHCALError + muonECALError);

    // Check if the charged momentum is still very inconsistent with the calo measurement.
    // In this case, just drop all tracks from 4th and 5th iteration linked to this block
    
    if ( rejectTracks_Step45_ &&
     sortedTracks.size() > 1 && 
     totalChargedMomentum - caloEnergy > nSigmaTRACK_*Caloresolution ) { 
      for ( IT it = associatedTracks.begin(); it != associatedTracks.end(); ++it ) { 
    unsigned iTrack = it->second.first;
    reco::TrackRef trackref = elements[iTrack].trackRef();
    if ( !active[iTrack] ) continue;

    double dptRel = fabs(it->first)/trackref->pt()*100;
    bool isPrimaryOrSecondary = isFromSecInt(elements[iTrack], "all");




    if (isPrimaryOrSecondary && dptRel < dptRel_DispVtx_) continue;

    switch (trackref->algo()) {
    case TrackBase::ctf:
    case TrackBase::initialStep:
    case TrackBase::lowPtTripletStep:
    case TrackBase::pixelPairStep:
    case TrackBase::detachedTripletStep:
    case TrackBase::mixedTripletStep:
    case TrackBase::jetCoreRegionalStep:
    case TrackBase::muonSeededStepInOut:
    case TrackBase::muonSeededStepOutIn:
      break;
    case TrackBase::pixelLessStep:
    case TrackBase::tobTecStep:
      active[iTrack] = false;   
      totalChargedMomentum -= trackref->p();
      
      if ( debug_ ) 
        std::cout << "\tElement  " << elements[iTrack] 
              << " rejected (Dpt = " << -it->first 
              << " GeV/c, algo = " << trackref->algo() << ")" << std::endl;
      break;
    case reco::TrackBase::hltIter0:
    case reco::TrackBase::hltIter1:
    case reco::TrackBase::hltIter2:
    case reco::TrackBase::hltIter3:
    case reco::TrackBase::hltIter4:
    case reco::TrackBase::hltIterX:
      break;      
    default:
      break;
    }
      }
    }

    // New determination of the calo and track resolution avec track deletion/rescaling.
    Caloresolution = neutralHadronEnergyResolution( totalChargedMomentum, hclusterref->positionREP().Eta());    
    Caloresolution *= totalChargedMomentum;
    Caloresolution = std::sqrt(Caloresolution*Caloresolution + muonHCALError + muonECALError);

    // Make PF candidates with the remaining tracks in the block
    sumpError2 = 0.;
    for ( IT it = associatedTracks.begin(); it != associatedTracks.end(); ++it ) { 
      unsigned iTrack = it->second.first;
      if ( !active[iTrack] ) continue;
      reco::TrackRef trackRef = elements[iTrack].trackRef();
      double trackMomentum = trackRef->p();
      double Dp = trackRef->qoverpError()*trackMomentum*trackMomentum;
      unsigned tmpi = reconstructTrack( elements[iTrack] );


      (*pfCandidates_)[tmpi].addElementInBlock( blockref, iTrack );
      (*pfCandidates_)[tmpi].addElementInBlock( blockref, iHcal );
      std::pair<II,II> myEcals = associatedEcals.equal_range(iTrack);
      for (II ii=myEcals.first; ii!=myEcals.second; ++ii ) { 
    unsigned iEcal = ii->second.second;
    if ( active[iEcal] ) continue;
    (*pfCandidates_)[tmpi].addElementInBlock( blockref, iEcal );
      }
      
      if (useHO_) {
    std::pair<II,II> myHOs = associatedHOs.equal_range(iTrack);
    for (II ii=myHOs.first; ii!=myHOs.second; ++ii ) { 
      unsigned iHO = ii->second.second;
      if ( active[iHO] ) continue;
      (*pfCandidates_)[tmpi].addElementInBlock( blockref, iHO );
    }
      }

      if ( iTrack == corrTrack ) { 
    (*pfCandidates_)[tmpi].rescaleMomentum(corrFact);
    trackMomentum *= corrFact;
      }
      chargedHadronsIndices.push_back( tmpi );
      chargedHadronsInBlock.push_back( iTrack );
      active[iTrack] = false;
      hcalP.push_back(trackMomentum);
      hcalDP.push_back(Dp);
      if (Dp/trackMomentum > maxDPovP) maxDPovP = Dp/trackMomentum;
      sumpError2 += Dp*Dp;
    }

    // The total uncertainty of the difference Calo-Track
    double TotalError = sqrt(sumpError2 + Caloresolution*Caloresolution);

    if ( debug_ ) {
      cout<<"\tCompare Calo Energy to total charged momentum "<<endl;
      cout<<"\t\tsum p    = "<<totalChargedMomentum<<" +- "<<sqrt(sumpError2)<<endl;
      cout<<"\t\tsum ecal = "<<totalEcal<<endl;
      cout<<"\t\tsum hcal = "<<totalHcal<<endl;
      cout<<"\t\t => Calo Energy = "<<caloEnergy<<" +- "<<Caloresolution<<endl;
      cout<<"\t\t => Calo Energy- total charged momentum = "
      <<caloEnergy-totalChargedMomentum<<" +- "<<TotalError<<endl;
      cout<<endl;
    }

    /* */

    double nsigma = nSigmaHCAL(totalChargedMomentum,hclusterref->positionREP().Eta());
    //double nsigma = nSigmaHCAL(caloEnergy,hclusterref->positionREP().Eta());
    if ( abs(totalChargedMomentum-caloEnergy)<nsigma*TotalError ) {

      // deposited caloEnergy compatible with total charged momentum
      // if tracking errors are large take weighted average
      
      if(debug_) {
    cout<<"\t\tcase 1: COMPATIBLE "
        <<"|Calo Energy- total charged momentum| = "
        <<abs(caloEnergy-totalChargedMomentum)
        <<" < "<<nsigma<<" x "<<TotalError<<endl;
    if (maxDPovP < 0.1 )
      cout<<"\t\t\tmax DP/P = "<< maxDPovP 
          <<" less than 0.1: do nothing "<<endl;
    else 
      cout<<"\t\t\tmax DP/P = "<< maxDPovP 
          <<" >  0.1: take weighted averages "<<endl;
      }
      
      // if max DP/P < 10%  do nothing
      if (maxDPovP > 0.1) {
      
        // for each track associated to hcal
        //      int nrows = tkIs.size();
        int nrows = chargedHadronsIndices.size();
        TMatrixTSym<double> a (nrows);
        TVectorD b (nrows);
        TVectorD check(nrows);
        double sigma2E = Caloresolution*Caloresolution;
        for(int i=0; i<nrows; i++) {
          double sigma2i = hcalDP[i]*hcalDP[i];
          if (debug_){
            cout<<"\t\t\ttrack associated to hcal "<<i 
                <<" P = "<<hcalP[i]<<" +- "
                <<hcalDP[i]<<endl;
      }
          a(i,i) = 1./sigma2i + 1./sigma2E;
          b(i) = hcalP[i]/sigma2i + caloEnergy/sigma2E;
          for(int j=0; j<nrows; j++) {
            if (i==j) continue;
            a(i,j) = 1./sigma2E;
          } // end loop on j
        } // end loop on i
        
        // solve ax = b
        //if (debug_){// debug1
        //cout<<" matrix a(i,j) "<<endl;
        //a.Print();
        //cout<<" vector b(i) "<<endl;
        //b.Print();
        //} // debug1
        TDecompChol decomp(a);
        bool ok = false;
        TVectorD x = decomp.Solve(b, ok);
        // for each track create a PFCandidate track
        // with a momentum rescaled to weighted average
        if (ok) {
          for (int i=0; i<nrows; i++){
            //      unsigned iTrack = trackInfos[i].index;
            unsigned ich = chargedHadronsIndices[i];
            double rescaleFactor =  x(i)/hcalP[i];
            (*pfCandidates_)[ich].rescaleMomentum( rescaleFactor );

            if(debug_){
              cout<<"\t\t\told p "<<hcalP[i]
                  <<" new p "<<x(i) 
                  <<" rescale "<<rescaleFactor<<endl;
            }
          }
        }
        else {
          cerr<<"not ok!"<<endl;
          assert(0);
        }
      }
    }

    else if( caloEnergy > totalChargedMomentum ) {
      
      //case 2: caloEnergy > totalChargedMomentum + nsigma*TotalError
      //there is an excess of energy in the calos
      //create a neutral hadron or a photon

      /*        
      //If it's isolated don't create neutrals since the energy deposit is always coming from a showering muon
      bool thisIsAnIsolatedMuon = false;
      for(IE ie = sortedTracks.begin(); ie != sortedTracks.end(); ++ie ) {
        unsigned iTrack = ie->second;
    if(PFMuonAlgo::isIsolatedMuon(elements[iTrack].muonRef())) thisIsAnIsolatedMuon = true; 
      }
      
      if(thisIsAnIsolatedMuon){
    if(debug_)cout<<" Not looking for neutral b/c this is an isolated muon "<<endl;
    break;
      }
      */
      double eNeutralHadron = caloEnergy - totalChargedMomentum;
      double ePhoton = (caloEnergy - totalChargedMomentum) / slopeEcal;

      if(debug_) {
        if(!sortedTracks.empty() ){
          cout<<"\t\tcase 2: NEUTRAL DETECTION "
              <<caloEnergy<<" > "<<nsigma<<"x"<<TotalError
              <<" + "<<totalChargedMomentum<<endl;
          cout<<"\t\tneutral activity detected: "<<endl
              <<"\t\t\t           photon = "<<ePhoton<<endl
              <<"\t\t\tor neutral hadron = "<<eNeutralHadron<<endl;
            
          cout<<"\t\tphoton or hadron ?"<<endl;}
          
        if(sortedTracks.empty() )
          cout<<"\t\tno track -> hadron "<<endl;
        else 
          cout<<"\t\t"<<sortedTracks.size()
              <<"tracks -> check if the excess is photonic or hadronic"<<endl;
      }
        

      double ratioMax = 0.;
      reco::PFClusterRef maxEcalRef;
      unsigned maxiEcal= 9999;       

      // for each track associated to hcal: iterator IE ie :
        
      for(IE ie = sortedTracks.begin(); ie != sortedTracks.end(); ++ie ) {
          
        unsigned iTrack = ie->second;
          
        PFBlockElement::Type type = elements[iTrack].type();
        assert( type == reco::PFBlockElement::TRACK );
          
        reco::TrackRef trackRef = elements[iTrack].trackRef();
        assert( !trackRef.isNull() ); 
          
    II iae = associatedEcals.find(iTrack);
          
        if( iae == associatedEcals.end() ) continue;
          
        // double distECAL = iae->second.first;
        unsigned iEcal = iae->second.second;
          
        PFBlockElement::Type typeEcal = elements[iEcal].type();
        assert(typeEcal == reco::PFBlockElement::ECAL);
          
        reco::PFClusterRef clusterRef = elements[iEcal].clusterRef();
        assert( !clusterRef.isNull() );
          
        double pTrack = trackRef->p();
        double eECAL = clusterRef->energy();
        double eECALOverpTrack = eECAL / pTrack;

    if ( eECALOverpTrack > ratioMax ) { 
      ratioMax = eECALOverpTrack;
      maxEcalRef = clusterRef;
      maxiEcal = iEcal;
    }          
    
      }  // end loop on tracks associated to hcal: iterator IE ie
    
      std::vector<reco::PFClusterRef> pivotalClusterRef;
      std::vector<unsigned> iPivotal;
      std::vector<double> particleEnergy, ecalEnergy, hcalEnergy, rawecalEnergy, rawhcalEnergy;
      std::vector<::math::XYZVector> particleDirection;

      // If the excess is smaller than the ecal energy, assign the whole 
      // excess to photons
      if ( ePhoton < totalEcal || eNeutralHadron-calibEcal < 1E-10 ) { 
        if ( !maxEcalRef.isNull() ) {
     // So the merged photon energy is,
         mergedPhotonEnergy  = ePhoton;
        }
      } else { 
    // Otherwise assign the whole ECAL energy to the photons
        if ( !maxEcalRef.isNull() ) {
     // So the merged photon energy is,
         mergedPhotonEnergy  = totalEcal;
        }
    // ... and assign the remaining excess to neutral hadrons using the direction of ecal clusters
        mergedNeutralHadronEnergy = eNeutralHadron-calibEcal;
      }

      if ( mergedPhotonEnergy > 0 ) {
          // Split merged photon into photons for each energetic ecal cluster (necessary for jet substructure reconstruction)
          // make only one merged photon if less than 2 ecal clusters
          if ( ecalClusters.size()<=1 ) {
            ecalClusters.clear();
            ecalClusters.push_back(make_pair(maxiEcal, photonAtECAL));
            sumEcalClusters=sqrt(photonAtECAL.Mag2());
          }
      for(std::vector<std::pair<unsigned,::math::XYZVector> >::const_iterator pae = ecalClusters.begin(); pae != ecalClusters.end(); ++pae ) {
           double clusterEnergy=sqrt(pae->second.Mag2());
       particleEnergy.push_back(mergedPhotonEnergy*clusterEnergy/sumEcalClusters);
           particleDirection.push_back(pae->second);
       ecalEnergy.push_back(mergedPhotonEnergy*clusterEnergy/sumEcalClusters);
       hcalEnergy.push_back(0.);
       rawecalEnergy.push_back(totalEcal);
       rawhcalEnergy.push_back(totalHcal);
       pivotalClusterRef.push_back(elements[pae->first].clusterRef());
       iPivotal.push_back(pae->first);
          }
      }
    
      if ( mergedNeutralHadronEnergy > 1.0 ) { 
          // Split merged neutral hadrons according to directions of energetic ecal clusters (necessary for jet substructure reconstruction)
          // make only one merged neutral hadron if less than 2 ecal clusters
          if ( ecalClusters.size()<=1 ) {
              ecalClusters.clear();
              ecalClusters.push_back(make_pair(iHcal, hadronAtECAL));
              sumEcalClusters=sqrt(hadronAtECAL.Mag2());
          }
          for(std::vector<std::pair<unsigned,::math::XYZVector> >::const_iterator pae = ecalClusters.begin(); pae != ecalClusters.end(); ++pae ) {
           double clusterEnergy=sqrt(pae->second.Mag2());
       particleEnergy.push_back(mergedNeutralHadronEnergy*clusterEnergy/sumEcalClusters);
           particleDirection.push_back(pae->second);
       ecalEnergy.push_back(0.);
       hcalEnergy.push_back(mergedNeutralHadronEnergy*clusterEnergy/sumEcalClusters);
       rawecalEnergy.push_back(totalEcal);
       rawhcalEnergy.push_back(totalHcal);
       pivotalClusterRef.push_back(hclusterref);
       iPivotal.push_back(iHcal);   
         }
      }

      // reconstructing a merged neutral
      // the type of PFCandidate is known from the 
      // reference to the pivotal cluster. 
      
      for ( unsigned iPivot=0; iPivot<iPivotal.size(); ++iPivot ) { 
    
    if ( particleEnergy[iPivot] < 0. ) 
      std::cout << "ALARM = Negative energy ! " 
            << particleEnergy[iPivot] << std::endl;
    
    bool useDirection = true;
    unsigned tmpi = reconstructCluster( *pivotalClusterRef[iPivot], 
                        particleEnergy[iPivot], 
                        useDirection,
                                        particleDirection[iPivot].X(),
                        particleDirection[iPivot].Y(),
                        particleDirection[iPivot].Z()); 

      
    (*pfCandidates_)[tmpi].setEcalEnergy( rawecalEnergy[iPivot],ecalEnergy[iPivot] );
    if ( !useHO_ ) { 
      (*pfCandidates_)[tmpi].setHcalEnergy( rawhcalEnergy[iPivot],hcalEnergy[iPivot] );
      (*pfCandidates_)[tmpi].setHoEnergy(0., 0.);
    } else { 
      (*pfCandidates_)[tmpi].setHcalEnergy( max(rawhcalEnergy[iPivot]-totalHO,0.0),hcalEnergy[iPivot]*(1.-totalHO/rawhcalEnergy[iPivot]));
      (*pfCandidates_)[tmpi].setHoEnergy(totalHO, totalHO * hcalEnergy[iPivot]/rawhcalEnergy[iPivot]);
    } 
    (*pfCandidates_)[tmpi].setPs1Energy( 0. );
    (*pfCandidates_)[tmpi].setPs2Energy( 0. );
    (*pfCandidates_)[tmpi].set_mva_nothing_gamma( -1. );
    //       (*pfCandidates_)[tmpi].addElement(&elements[iPivotal]);
    // (*pfCandidates_)[tmpi].addElementInBlock(blockref, iPivotal[iPivot]);
    (*pfCandidates_)[tmpi].addElementInBlock( blockref, iHcal );
    for ( unsigned ich=0; ich<chargedHadronsInBlock.size(); ++ich) { 
      unsigned iTrack = chargedHadronsInBlock[ich];
      (*pfCandidates_)[tmpi].addElementInBlock( blockref, iTrack );
      // Assign the position of the track at the ECAL entrance
      const ::math::XYZPointF& chargedPosition = 
        dynamic_cast<const reco::PFBlockElementTrack*>(&elements[iTrack])->positionAtECALEntrance();
      (*pfCandidates_)[tmpi].setPositionAtECALEntrance(chargedPosition);

      std::pair<II,II> myEcals = associatedEcals.equal_range(iTrack);
      for (II ii=myEcals.first; ii!=myEcals.second; ++ii ) { 
        unsigned iEcal = ii->second.second;
        if ( active[iEcal] ) continue;
        (*pfCandidates_)[tmpi].addElementInBlock( blockref, iEcal );
      }
    }

      }

    } // excess of energy
  
  
    // will now share the hcal energy between the various charged hadron 
    // candidates, taking into account the potential neutral hadrons
    
    double totalHcalEnergyCalibrated = calibHcal;
    double totalEcalEnergyCalibrated = calibEcal;
    //JB: The question is: we've resolved the merged photons cleanly, but how should
    //the remaining hadrons be assigned the remaining ecal energy?
    //*Temporary solution*: follow HCAL example with fractions...    
 
   /*
    if(totalEcal>0) {
      // removing ecal energy from abc calibration
      totalHcalEnergyCalibrated  -= calibEcal;
      // totalHcalEnergyCalibrated -= calibration_->paramECALplusHCAL_slopeECAL() * totalEcal;
    }
    */
    // else caloEnergy = hcal only calibrated energy -> ok.

    // remove the energy of the potential neutral hadron
    totalHcalEnergyCalibrated -= mergedNeutralHadronEnergy;
    // similarly for the merged photons
    totalEcalEnergyCalibrated -= mergedPhotonEnergy;
    // share between the charged hadrons

    //COLIN can compute this before
    // not exactly equal to sum p, this is sum E
    double chargedHadronsTotalEnergy = 0;
    for( unsigned ich=0; ich<chargedHadronsIndices.size(); ++ich ) {
      unsigned index = chargedHadronsIndices[ich];
      reco::PFCandidate& chargedHadron = (*pfCandidates_)[index];
      chargedHadronsTotalEnergy += chargedHadron.energy();
    }

    for( unsigned ich=0; ich<chargedHadronsIndices.size(); ++ich ) {
      unsigned index = chargedHadronsIndices[ich];
      reco::PFCandidate& chargedHadron = (*pfCandidates_)[index];
      float fraction = chargedHadron.energy()/chargedHadronsTotalEnergy;

      if ( !useHO_ ) { 
    chargedHadron.setHcalEnergy(  fraction * totalHcal, fraction * totalHcalEnergyCalibrated );          
    chargedHadron.setHoEnergy(  0., 0. ); 
      } else { 
    chargedHadron.setHcalEnergy(  fraction * max(totalHcal-totalHO,0.0), fraction * totalHcalEnergyCalibrated * (1.-totalHO/totalHcal) );          
    chargedHadron.setHoEnergy( fraction * totalHO, fraction * totalHO * totalHcalEnergyCalibrated / totalHcal ); 
      }
      //JB: fixing up (previously omitted) setting of ECAL energy gouzevit
      chargedHadron.setEcalEnergy( fraction * totalEcal, fraction * totalEcalEnergyCalibrated );
    }

    // Finally treat unused ecal satellites as photons.
    for ( IS is = ecalSatellites.begin(); is != ecalSatellites.end(); ++is ) { 
      
      // Ignore satellites already taken
      unsigned iEcal = is->second.first;
      if ( !active[iEcal] ) continue;

      // Sanity checks again (well not useful, this time!)
      PFBlockElement::Type type = elements[ iEcal ].type();
      assert( type == PFBlockElement::ECAL );
      PFClusterRef eclusterref = elements[iEcal].clusterRef();
      assert(!eclusterref.isNull() );

      // Lock the cluster
      active[iEcal] = false;
      
      // Find the associated tracks
      std::multimap<double, unsigned> assTracks;
      block.associatedElements( iEcal,  linkData,
                assTracks,
                reco::PFBlockElement::TRACK,
                reco::PFBlock::LINKTEST_ALL );

      // Create a photon
      unsigned tmpi = reconstructCluster( *eclusterref, sqrt(is->second.second.Mag2()) ); 
      (*pfCandidates_)[tmpi].setEcalEnergy( eclusterref->energy(),sqrt(is->second.second.Mag2()) );
      (*pfCandidates_)[tmpi].setHcalEnergy( 0., 0. );
      (*pfCandidates_)[tmpi].setHoEnergy( 0., 0. );
      (*pfCandidates_)[tmpi].setPs1Energy( associatedPSs[iEcal].first );
      (*pfCandidates_)[tmpi].setPs2Energy( associatedPSs[iEcal].second );
      (*pfCandidates_)[tmpi].addElementInBlock( blockref, iEcal );
      (*pfCandidates_)[tmpi].addElementInBlock( blockref, sortedTracks.begin()->second) ;
    }


  }

   // end loop on hcal element iHcal= hcalIs[i] 


  // Processing the remaining HCAL clusters
  if(debug_) { 
    cout<<endl;
    if(debug_) 
      cout<<endl
          <<"---- loop remaining hcal ------- "<<endl;
  }
  

  //COLINFEB16 
  // now dealing with the HCAL elements that are not linked to any track 
  for(unsigned ihcluster=0; ihcluster<hcalIs.size(); ihcluster++) {
    unsigned iHcal = hcalIs[ihcluster];

    // Keep ECAL and HO elements for reference in the PFCandidate
    std::vector<unsigned> ecalRefs;
    std::vector<unsigned> hoRefs;
    
    if(debug_)
      cout<<endl<<elements[iHcal]<<" ";
    
    
    if( !active[iHcal] ) {
      if(debug_) 
        cout<<"not active"<<endl;         
      continue;
    }
    
    // Find the ECAL elements linked to it
    std::multimap<double, unsigned> ecalElems;
    block.associatedElements( iHcal,  linkData,
                              ecalElems ,
                              reco::PFBlockElement::ECAL,
                  reco::PFBlock::LINKTEST_ALL );

    // Loop on these ECAL elements
    float totalEcal = 0.;
    float ecalMax = 0.;
    reco::PFClusterRef eClusterRef;
    for(IE ie = ecalElems.begin(); ie != ecalElems.end(); ++ie ) {
      
      unsigned iEcal = ie->second;
      double dist = ie->first;
      PFBlockElement::Type type = elements[iEcal].type();
      assert( type == PFBlockElement::ECAL );
      
      // Check if already used
      if( !active[iEcal] ) continue;

      // Check the distance (one HCALPlusECAL tower, roughly)
      // if ( dist > 0.15 ) continue;

      //COLINFEB16 
      // what could be done is to
      // - link by rechit.
      // - take in the neutral hadron all the ECAL clusters 
      // which are within the same CaloTower, according to the distance, 
      // except the ones which are closer to another HCAL cluster.
      // - all the other ECAL linked to this HCAL are photons. 
      // 
      // about the closest HCAL cluster. 
      // it could maybe be easier to loop on the ECAL clusters first
      // to cut the links to all HCAL clusters except the closest, as is 
      // done in the first track loop. But maybe not!
      // or add an helper function to the PFAlgo class to ask 
      // if a given element is the closest of a given type to another one?
    
      // Check if not closer from another free HCAL 
      std::multimap<double, unsigned> hcalElems;
      block.associatedElements( iEcal,  linkData,
                hcalElems ,
                reco::PFBlockElement::HCAL,
                reco::PFBlock::LINKTEST_ALL );

      bool isClosest = true;
      for(IE ih = hcalElems.begin(); ih != hcalElems.end(); ++ih ) {

    unsigned jHcal = ih->second;
    double distH = ih->first;
    
    if ( !active[jHcal] ) continue;

    if ( distH < dist ) { 
      isClosest = false;
      break;
    }

      }

      if (!isClosest) continue;


      if(debug_) {
        cout<<"\telement "<<elements[iEcal]<<" linked with dist "<< dist<<endl;
    cout<<"Added to HCAL cluster to form a neutral hadron"<<endl;
      }
      
      reco::PFClusterRef eclusterRef = elements[iEcal].clusterRef();
      assert( !eclusterRef.isNull() );

      double ecalEnergy = eclusterRef->correctedEnergy();
      
      //std::cout << "EcalEnergy, ps1, ps2 = " << ecalEnergy 
      //          << ", " << ps1Ene[0] << ", " << ps2Ene[0] << std::endl;
      totalEcal += ecalEnergy;
      if ( ecalEnergy > ecalMax ) { 
    ecalMax = ecalEnergy;
    eClusterRef = eclusterRef;
      }
      
      ecalRefs.push_back(iEcal);
      active[iEcal] = false;


    }// End loop ECAL
    
    // Now find the HO clusters linked to the HCAL cluster
    double totalHO = 0.;
    double hoMax = 0.;
    //unsigned jHO = 0;
    if (useHO_) {
      std::multimap<double, unsigned> hoElems;
      block.associatedElements( iHcal,  linkData,
                hoElems ,
                reco::PFBlockElement::HO,
                reco::PFBlock::LINKTEST_ALL );
      
      // Loop on these HO elements
      //      double totalHO = 0.;
      //      double hoMax = 0.;
      //      unsigned jHO = 0;
      reco::PFClusterRef hoClusterRef;
      for(IE ie = hoElems.begin(); ie != hoElems.end(); ++ie ) {
    
    unsigned iHO = ie->second;
    double dist = ie->first;
    PFBlockElement::Type type = elements[iHO].type();
    assert( type == PFBlockElement::HO );
    
    // Check if already used
    if( !active[iHO] ) continue;
    
    // Check the distance (one HCALPlusHO tower, roughly)
    // if ( dist > 0.15 ) continue;
    
    // Check if not closer from another free HCAL 
    std::multimap<double, unsigned> hcalElems;
    block.associatedElements( iHO,  linkData,
                  hcalElems ,
                  reco::PFBlockElement::HCAL,
                  reco::PFBlock::LINKTEST_ALL );
    
    bool isClosest = true;
    for(IE ih = hcalElems.begin(); ih != hcalElems.end(); ++ih ) {
      
      unsigned jHcal = ih->second;
      double distH = ih->first;
      
      if ( !active[jHcal] ) continue;
      
      if ( distH < dist ) { 
        isClosest = false;
        break;
      }
      
    }
    
    if (!isClosest) continue;
    
    if(debug_ && useHO_) {
      cout<<"\telement "<<elements[iHO]<<" linked with dist "<< dist<<endl;
      cout<<"Added to HCAL cluster to form a neutral hadron"<<endl;
    }
    
    reco::PFClusterRef hoclusterRef = elements[iHO].clusterRef();
    assert( !hoclusterRef.isNull() );
    
    double hoEnergy = hoclusterRef->energy(); // calibration_->energyEm(*hoclusterRef,ps1Ene,ps2Ene,crackCorrection);
    
    totalHO += hoEnergy;
    if ( hoEnergy > hoMax ) { 
      hoMax = hoEnergy;
      hoClusterRef = hoclusterRef;
      //jHO = iHO;
    }
    
    hoRefs.push_back(iHO);
    active[iHO] = false;
    
      }// End loop HO
    }

    PFClusterRef hclusterRef 
      = elements[iHcal].clusterRef();
    assert( !hclusterRef.isNull() );
    
    // HCAL energy
    double totalHcal =  hclusterRef->energy();
    // Include the HO energy 
    if ( useHO_ ) totalHcal += totalHO;

    // std::cout << "Hcal Energy,eta : " << totalHcal 
    //          << ", " << hclusterRef->positionREP().Eta()
    //          << std::endl;
    // Calibration
    //double caloEnergy = totalHcal;
    // double slopeEcal = 1.0;
    double calibEcal = totalEcal > 0. ? totalEcal : 0.;
    double calibHcal = std::max(0.,totalHcal);
    if  (  hclusterRef->layer() == PFLayer::HF_HAD  ||
       hclusterRef->layer() == PFLayer::HF_EM ) { 
      //caloEnergy = totalHcal/0.7;
      calibEcal = totalEcal;
    } else { 
      calibration_->energyEmHad(-1.,calibEcal,calibHcal,
                hclusterRef->positionREP().Eta(),
                hclusterRef->positionREP().Phi());      
      //caloEnergy = calibEcal+calibHcal;
    }

    // std::cout << "CalibEcal,HCal = " << calibEcal << ", " << calibHcal << std::endl;
    // std::cout << "-------------------------------------------------------------------" << std::endl;
    // ECAL energy : calibration

    // double particleEnergy = caloEnergy;
    // double particleEnergy = totalEcal + calibHcal;
    // particleEnergy /= (1.-0.724/sqrt(particleEnergy)-0.0226/particleEnergy);

    unsigned tmpi = reconstructCluster( *hclusterRef, 
                                        calibEcal+calibHcal ); 

    
    (*pfCandidates_)[tmpi].setEcalEnergy( totalEcal, calibEcal );
    if ( !useHO_ ) { 
      (*pfCandidates_)[tmpi].setHcalEnergy( totalHcal, calibHcal );
      (*pfCandidates_)[tmpi].setHoEnergy(0.,0.);
    } else { 
      (*pfCandidates_)[tmpi].setHcalEnergy( max(totalHcal-totalHO,0.0), calibHcal*(1.-totalHO/totalHcal));
      (*pfCandidates_)[tmpi].setHoEnergy(totalHO,totalHO*calibHcal/totalHcal);
    }
    (*pfCandidates_)[tmpi].setPs1Energy( 0. );
    (*pfCandidates_)[tmpi].setPs2Energy( 0. );
    (*pfCandidates_)[tmpi].addElementInBlock( blockref, iHcal );
    for (unsigned iec=0; iec<ecalRefs.size(); ++iec) 
      (*pfCandidates_)[tmpi].addElementInBlock( blockref, ecalRefs[iec] );
    for (unsigned iho=0; iho<hoRefs.size(); ++iho) 
      (*pfCandidates_)[tmpi].addElementInBlock( blockref, hoRefs[iho] );
      
  }//loop hcal elements




  if(debug_) { 
    cout<<endl;
    if(debug_) cout<<endl<<"---- loop ecal------- "<<endl;
  }
  
  // for each ecal element iEcal = ecalIs[i] in turn:

  for(unsigned i=0; i<ecalIs.size(); i++) {
    unsigned iEcal = ecalIs[i];
    
    if(debug_) 
      cout<<endl<<elements[iEcal]<<" ";
    
    if( ! active[iEcal] ) {
      if(debug_) 
        cout<<"not active"<<endl;         
      continue;
    }
    
    PFBlockElement::Type type = elements[ iEcal ].type();
    assert( type == PFBlockElement::ECAL );

    PFClusterRef clusterref = elements[iEcal].clusterRef();
    assert(!clusterref.isNull() );

    active[iEcal] = false;

    float ecalEnergy = clusterref->correctedEnergy();
    // float ecalEnergy = calibration_->energyEm( clusterref->energy() );
    double particleEnergy = ecalEnergy;
    
    unsigned tmpi = reconstructCluster( *clusterref, 
                                        particleEnergy );
 
    (*pfCandidates_)[tmpi].setEcalEnergy( clusterref->energy(),ecalEnergy );
    (*pfCandidates_)[tmpi].setHcalEnergy( 0., 0. );
    (*pfCandidates_)[tmpi].setHoEnergy( 0., 0. );
    (*pfCandidates_)[tmpi].setPs1Energy( 0. );
    (*pfCandidates_)[tmpi].setPs2Energy( 0. );
    (*pfCandidates_)[tmpi].addElementInBlock( blockref, iEcal );
    

  }  // end loop on ecal elements iEcal = ecalIs[i]

}  // end processBlock

unsigned PFAlgo::reconstructCluster ( const reco::PFCluster &  cluster, double  particleEnergy, bool  useDirection = false, double  particleX = 0., double  particleY = 0., double  particleZ = 0.  )

protected

Reconstruct a neutral particle from a cluster. If chargedEnergy is specified, the neutral particle is created only if the cluster energy is significantly larger than the chargedEnergy. In this case, the energy of the neutral particle is cluster energy - chargedEnergy

Definition at line 3238 of file PFAlgo.cc.

References assert(), gather_cfg::cout, debug_, PFLayer::ECAL_BARREL, PFLayer::ECAL_ENDCAP, PFLayer::HCAL_BARREL1, PFLayer::HCAL_ENDCAP, PFLayer::HF_EM, PFLayer::HF_HAD, reco::PFCluster::layer(), HLT_25ns14e33_v1_cff::particleType, pfCandidates_, reco::CaloCluster::position(), primaryVertex_, mathSSE::sqrt(), tmp, useVertices_, reco::PFCandidate::X, reco::Vertex::x(), reco::Vertex::y(), and reco::Vertex::z().

Referenced by checkCleaning(), and processBlock().

                                 {
  
  reco::PFCandidate::ParticleType particleType = reco::PFCandidate::X;

  // need to convert the ::math::XYZPoint data member of the PFCluster class=
  // to a displacement vector: 

  // Transform particleX,Y,Z to a position at ECAL/HCAL entrance
  double factor = 1.;
  if ( useDirection ) { 
    switch( cluster.layer() ) {
    case PFLayer::ECAL_BARREL:
    case PFLayer::HCAL_BARREL1:
      factor = std::sqrt(cluster.position().Perp2()/(particleX*particleX+particleY*particleY));
      break;
    case PFLayer::ECAL_ENDCAP:
    case PFLayer::HCAL_ENDCAP:
    case PFLayer::HF_HAD:
    case PFLayer::HF_EM:
      factor = cluster.position().Z()/particleZ;
      break;
    default:
      assert(0);
    }
  }
  //MIKE First of all let's check if we have vertex.
  ::math::XYZPoint vertexPos; 
  if(useVertices_)
    vertexPos = ::math::XYZPoint(primaryVertex_.x(),primaryVertex_.y(),primaryVertex_.z());
  else
    vertexPos = ::math::XYZPoint(0.0,0.0,0.0);


  ::math::XYZVector clusterPos( cluster.position().X()-vertexPos.X(), 
                  cluster.position().Y()-vertexPos.Y(),
                  cluster.position().Z()-vertexPos.Z());
  ::math::XYZVector particleDirection ( particleX*factor-vertexPos.X(), 
                      particleY*factor-vertexPos.Y(), 
                      particleZ*factor-vertexPos.Z() );

  //::math::XYZVector clusterPos( cluster.position().X(), cluster.position().Y(),cluster.position().Z() );
  //::math::XYZVector particleDirection ( particleX, particleY, particleZ );

  clusterPos = useDirection ? particleDirection.Unit() : clusterPos.Unit();
  clusterPos *= particleEnergy;

  // clusterPos is now a vector along the cluster direction, 
  // with a magnitude equal to the cluster energy.
  
  double mass = 0;
  ROOT::Math::LorentzVector<ROOT::Math::PxPyPzM4D<double> > 
    momentum( clusterPos.X(), clusterPos.Y(), clusterPos.Z(), mass); 
  // mathcore is a piece of #$%
  ::math::XYZTLorentzVector  tmp;
  // implicit constructor not allowed
  tmp = momentum;

  // Charge
  int charge = 0;

  // Type
  switch( cluster.layer() ) {
  case PFLayer::ECAL_BARREL:
  case PFLayer::ECAL_ENDCAP:
    particleType = PFCandidate::gamma;
    break;
  case PFLayer::HCAL_BARREL1:
  case PFLayer::HCAL_ENDCAP:    
    particleType = PFCandidate::h0;
    break;
  case PFLayer::HF_HAD:
    particleType = PFCandidate::h_HF;
    break;
  case PFLayer::HF_EM:
    particleType = PFCandidate::egamma_HF;
    break;
  default:
    assert(0);
  }

  // The pf candidate
  pfCandidates_->push_back( PFCandidate( charge, 
                                         tmp, 
                                         particleType ) );

  // The position at ECAL entrance (well: watch out, it is not true
  // for HCAL clusters... to be fixed)
  pfCandidates_->back().
    setPositionAtECALEntrance(::math::XYZPointF(cluster.position().X(),
                          cluster.position().Y(),
                          cluster.position().Z()));

  //Set the cnadidate Vertex
  pfCandidates_->back().setVertex(vertexPos);  

  if(debug_) 
    cout<<"** candidate: "<<pfCandidates_->back()<<endl; 

  // returns index to the newly created PFCandidate
  return pfCandidates_->size()-1;

}

void PFAlgo::reconstructParticles

(

const reco::PFBlockHandle &

blockHandle

)

reconstruct particles (full framework case) will keep track of the block handle to build persistent references, and call reconstructParticles( const reco::PFBlockCollection& blocks )

Definition at line 414 of file PFAlgo.cc.

References blockHandle_.

                                                                        {

  blockHandle_ = blockHandle;
  reconstructParticles( *blockHandle_ ); 
}

void PFAlgo::reconstructParticles ( const reco::PFBlockCollection &  blocks )

virtual

reconstruct particles

Definition at line 422 of file PFAlgo.cc.

References PFMuonAlgo::addMissingMuons(), createPayload::block, gather_cfg::cout, createBlockRef(), debug_, reco::PFBlockElement::ECAL, reco::PFBlock::elements(), asciidump::elements, relativeConstraints::empty, reco::PFBlockElement::HCAL, reco::PFBlockElement::HO, i, edm::HandleBase::isValid(), muonHandle_, pfCandidates_, pfCleanedCandidates_, pfElectronCandidates_, pfElectronExtra_, pfmu_, pfPhotonCandidates_, pfPhotonExtra_, PFMuonAlgo::postClean(), postCleaning(), processBlock(), and edm::OwnVector< T, P >::size().

                                                                       {

  // reset output collection
  if(pfCandidates_.get() )
    pfCandidates_->clear();
  else 
    pfCandidates_.reset( new reco::PFCandidateCollection );

  if(pfElectronCandidates_.get() )
    pfElectronCandidates_->clear();
  else
    pfElectronCandidates_.reset( new reco::PFCandidateCollection);

  // Clearing pfPhotonCandidates
  if( pfPhotonCandidates_.get() )
    pfPhotonCandidates_->clear();
  else
    pfPhotonCandidates_.reset( new reco::PFCandidateCollection);

  if(pfCleanedCandidates_.get() ) 
    pfCleanedCandidates_->clear();
  else
    pfCleanedCandidates_.reset( new reco::PFCandidateCollection );
  
  // not a auto_ptr; shout not be deleted after transfer
  pfElectronExtra_.clear();
  pfPhotonExtra_.clear();
  
  if( debug_ ) {
    cout<<"*********************************************************"<<endl;
    cout<<"*****           Particle flow algorithm             *****"<<endl;
    cout<<"*********************************************************"<<endl;
  }

  // sort elements in three lists:
  std::list< reco::PFBlockRef > hcalBlockRefs;
  std::list< reco::PFBlockRef > ecalBlockRefs;
  std::list< reco::PFBlockRef > hoBlockRefs;
  std::list< reco::PFBlockRef > otherBlockRefs;
  
  for( unsigned i=0; i<blocks.size(); ++i ) {
    // reco::PFBlockRef blockref( blockh,i );
    reco::PFBlockRef blockref = createBlockRef( blocks, i);
    
    const reco::PFBlock& block = *blockref;
    const edm::OwnVector< reco::PFBlockElement >& 
      elements = block.elements();
   
    bool singleEcalOrHcal = false;
    if( elements.size() == 1 ){
      if( elements[0].type() == reco::PFBlockElement::ECAL ){
    ecalBlockRefs.push_back( blockref );
    singleEcalOrHcal = true;
      }
      if( elements[0].type() == reco::PFBlockElement::HCAL ){
    hcalBlockRefs.push_back( blockref );
    singleEcalOrHcal = true;
      }
      if( elements[0].type() == reco::PFBlockElement::HO ){
    // Single HO elements are likely to be noise. Not considered for now.
    hoBlockRefs.push_back( blockref );
    singleEcalOrHcal = true;
      }
    }
    
    if(!singleEcalOrHcal) {
      otherBlockRefs.push_back( blockref );
    }
  }//loop blocks
  
  if( debug_ ){
    cout<<"# Ecal blocks: "<<ecalBlockRefs.size()
        <<", # Hcal blocks: "<<hcalBlockRefs.size()
        <<", # HO blocks: "<<hoBlockRefs.size()
        <<", # Other blocks: "<<otherBlockRefs.size()<<endl;
  }


  // loop on blocks that are not single ecal, 
  // and not single hcal.

  unsigned nblcks = 0;
  for( IBR io = otherBlockRefs.begin(); io!=otherBlockRefs.end(); ++io) {
    if ( debug_ ) std::cout << "Block number " << nblcks++ << std::endl; 
    processBlock( *io, hcalBlockRefs, ecalBlockRefs );
  }

  std::list< reco::PFBlockRef > empty;

  unsigned hblcks = 0;
  // process remaining single hcal blocks
  for( IBR ih = hcalBlockRefs.begin(); ih!=hcalBlockRefs.end(); ++ih) {
    if ( debug_ ) std::cout << "HCAL block number " << hblcks++ << std::endl;
    processBlock( *ih, empty, empty );
  }

  unsigned eblcks = 0;
  // process remaining single ecal blocks
  for( IBR ie = ecalBlockRefs.begin(); ie!=ecalBlockRefs.end(); ++ie) {
    if ( debug_ ) std::cout << "ECAL block number " << eblcks++ << std::endl;
    processBlock( *ie, empty, empty );
  }

  // Post HF Cleaning
  postCleaning();

  //Muon post cleaning
  pfmu_->postClean(pfCandidates_.get());

  //Add Missing muons
   if( muonHandle_.isValid())
     pfmu_->addMissingMuons(muonHandle_,pfCandidates_.get());
}

unsigned PFAlgo::reconstructTrack ( const reco::PFBlockElement &  elt, bool  allowLoose = false  )

protected

Reconstruct a charged particle from a track Returns the index of the newly created candidate in pfCandidates_ Michalis added a flag here to treat muons inside jets

Definition at line 3164 of file PFAlgo.cc.

References reco::TrackBase::charge(), gather_cfg::cout, debug_, reco::PFBlockElementTrack::displacedVertexRef(), dptRel_DispVtx_, relval_parameters_module::energy, reco::PFCandidate::h, isFromSecInt(), reco::isMuon(), edm::Ref< C, T, F >::isNonnull(), reco::PFBlockElementTrack::muonRef(), reco::TrackBase::p(), HLT_25ns14e33_v1_cff::particleType, pfCandidates_, pfmu_, reco::PFBlockElementTrack::positionAtECALEntrance(), reco::TrackBase::px(), reco::TrackBase::py(), reco::TrackBase::pz(), PFMuonAlgo::reconstructMuon(), mathSSE::sqrt(), reco::PFBlockElement::T_FROM_DISP, reco::PFCandidate::T_FROM_DISP, reco::PFBlockElement::T_TO_DISP, reco::PFCandidate::T_TO_DISP, and reco::PFBlockElementTrack::trackRef().

Referenced by processBlock().

                                                                                 {

  const reco::PFBlockElementTrack* eltTrack 
    = dynamic_cast<const reco::PFBlockElementTrack*>(&elt);

  reco::TrackRef trackRef = eltTrack->trackRef();
  const reco::Track& track = *trackRef;
  reco::MuonRef muonRef = eltTrack->muonRef();
  int charge = track.charge()>0 ? 1 : -1;

  // Assume this particle is a charged Hadron
  double px = track.px();
  double py = track.py();
  double pz = track.pz();
  double energy = sqrt(track.p()*track.p() + 0.13957*0.13957);

  // Create a PF Candidate
  ::math::XYZTLorentzVector momentum(px,py,pz,energy);
  reco::PFCandidate::ParticleType particleType 
    = reco::PFCandidate::h;

  // Add it to the stack
  pfCandidates_->push_back( PFCandidate( charge, 
                                         momentum,
                                         particleType ) );
  //Set vertex and stuff like this
  pfCandidates_->back().setVertexSource( PFCandidate::kTrkVertex );
  pfCandidates_->back().setTrackRef( trackRef );
  pfCandidates_->back().setPositionAtECALEntrance( eltTrack->positionAtECALEntrance());
  if( muonRef.isNonnull())
    pfCandidates_->back().setMuonRef( muonRef );



  //OK Now try to reconstruct the particle as a muon
  bool isMuon=pfmu_->reconstructMuon(pfCandidates_->back(),muonRef,allowLoose);
  bool isFromDisp = isFromSecInt(elt, "secondary");


  if ((!isMuon) && isFromDisp) {
    double Dpt = trackRef->ptError();
    double dptRel = Dpt/trackRef->pt()*100;
    //If the track is ill measured it is better to not refit it, since the track information probably would not be used.
    //In the PFAlgo we use the trackref information. If the track error is too big the refitted information might be very different
    // from the not refitted one.
    if (dptRel < dptRel_DispVtx_){
      if (debug_) 
    cout << "Not refitted px = " << px << " py = " << py << " pz = " << pz << " energy = " << energy << endl; 
      //reco::TrackRef trackRef = eltTrack->trackRef();
      reco::PFDisplacedVertexRef vRef = eltTrack->displacedVertexRef(reco::PFBlockElement::T_FROM_DISP)->displacedVertexRef();
      reco::Track trackRefit = vRef->refittedTrack(trackRef);
      //change the momentum with the refitted track
      ::math::XYZTLorentzVector momentum(trackRefit.px(),
                       trackRefit.py(),
                       trackRefit.pz(),
                       sqrt(trackRefit.p()*trackRefit.p() + 0.13957*0.13957));
      if (debug_) 
    cout << "Refitted px = " << px << " py = " << py << " pz = " << pz << " energy = " << energy << endl; 
    }
    pfCandidates_->back().setFlag( reco::PFCandidate::T_FROM_DISP, true);
    pfCandidates_->back().setDisplacedVertexRef( eltTrack->displacedVertexRef(reco::PFBlockElement::T_FROM_DISP)->displacedVertexRef(), reco::PFCandidate::T_FROM_DISP);
  }

  // do not label as primary a track which would be recognised as a muon. A muon cannot produce NI. It is with high probability a fake
  if(isFromSecInt(elt, "primary") && !isMuon) {
    pfCandidates_->back().setFlag( reco::PFCandidate::T_TO_DISP, true);
    pfCandidates_->back().setDisplacedVertexRef( eltTrack->displacedVertexRef(reco::PFBlockElement::T_TO_DISP)->displacedVertexRef(), reco::PFCandidate::T_TO_DISP);
  }
  // returns index to the newly created PFCandidate
  return pfCandidates_->size()-1;
}

void PFAlgo::setAlgo ( int  algo )

inline

Definition at line 63 of file PFAlgo.h.

References HLT_25ns14e33_v1_cff::algo, and algo_.

{algo_ = algo;}

void PFAlgo::setCandConnectorParameters ( const edm::ParameterSet &  iCfgCandConnector )

inline

Definition at line 73 of file PFAlgo.h.

References connector_, and PFCandConnector::setParameters().

                                                                             {
    connector_.setParameters(iCfgCandConnector);
  }

void PFAlgo::setCandConnectorParameters ( bool  bCorrect, bool  bCalibPrimary, double  dptRel_PrimaryTrack, double  dptRel_MergedTrack, double  ptErrorSecondary, const std::vector< double > &  nuclCalibFactors  )

inline

Definition at line 77 of file PFAlgo.h.

References connector_, and PFCandConnector::setParameters().

                                                            {
    connector_.setParameters(bCorrect, bCalibPrimary, dptRel_PrimaryTrack, dptRel_MergedTrack, ptErrorSecondary, nuclCalibFactors);
  }

void PFAlgo::setDebug ( bool  debug )

inline

Definition at line 66 of file PFAlgo.h.

References connector_, debug, debug_, and PFCandConnector::setDebug().

{debug_ = debug; connector_.setDebug(debug_);}

void PFAlgo::setDisplacedVerticesParameters	(	bool	rejectTracks_Bad,
		bool	rejectTracks_Step45,
		bool	usePFNuclearInteractions,
		bool	usePFConversions,
		bool	usePFDecays,
		double	dptRel_DispVtx
	)

Definition at line 353 of file PFAlgo.cc.

References HLT_25ns14e33_v1_cff::dptRel_DispVtx, dptRel_DispVtx_, HLT_25ns14e33_v1_cff::rejectTracks_Bad, rejectTracks_Bad_, HLT_25ns14e33_v1_cff::rejectTracks_Step45, rejectTracks_Step45_, HLT_25ns14e33_v1_cff::usePFConversions, usePFConversions_, HLT_25ns14e33_v1_cff::usePFDecays, usePFDecays_, HLT_25ns14e33_v1_cff::usePFNuclearInteractions, and usePFNuclearInteractions_.

                                             {

  rejectTracks_Bad_ = rejectTracks_Bad;
  rejectTracks_Step45_ = rejectTracks_Step45;
  usePFNuclearInteractions_ = usePFNuclearInteractions;
  usePFConversions_ = usePFConversions;
  usePFDecays_ = usePFDecays;
  dptRel_DispVtx_ = dptRel_DispVtx;

}

void PFAlgo::setEGammaCollections	(	const edm::View< reco::PFCandidate > &	pfEgammaCandidates,
		const edm::ValueMap< reco::GsfElectronRef > &	valueMapGedElectrons,
		const edm::ValueMap< reco::PhotonRef > &	valueMapGedPhotons
	)

Definition at line 266 of file PFAlgo.cc.

References pfEgammaCandidates_, useEGammaFilters_, valueMapGedElectrons_, and valueMapGedPhotons_.

                                                                         {
  if(useEGammaFilters_) {
    pfEgammaCandidates_ = & pfEgammaCandidates;
    valueMapGedElectrons_ = & valueMapGedElectrons;
    valueMapGedPhotons_ = & valueMapGedPhotons;
  }
}

void PFAlgo::setEGammaParameters	(	bool	use_EGammaFilters,
		std::string	ele_iso_path_mvaWeightFile,
		double	ele_iso_pt,
		double	ele_iso_mva_barrel,
		double	ele_iso_mva_endcap,
		double	ele_iso_combIso_barrel,
		double	ele_iso_combIso_endcap,
		double	ele_noniso_mva,
		unsigned int	ele_missinghits,
		bool	useProtectionsForJetMET,
		const edm::ParameterSet &	ele_protectionsForJetMET,
		double	ph_MinEt,
		double	ph_combIso,
		double	ph_HoE,
		double	ph_sietaieta_eb,
		double	ph_sietaieta_ee,
		const edm::ParameterSet &	ph_protectionsForJetMET
	)

Definition at line 211 of file PFAlgo.cc.

References pfegamma_, useEGammaFilters_, HLT_25ns14e33_v1_cff::useProtectionsForJetMET, and useProtectionsForJetMET_.

{
  
  useEGammaFilters_ = use_EGammaFilters;

  if(!useEGammaFilters_ ) return;
  FILE * fileEGamma_ele_iso_ID = fopen(ele_iso_path_mvaWeightFile.c_str(), "r");  
  if (fileEGamma_ele_iso_ID) {  
    fclose(fileEGamma_ele_iso_ID);  
  }  
  else {  
    string err = "PFAlgo: cannot open weight file '";  
    err += ele_iso_path_mvaWeightFile;  
    err += "'";  
    throw invalid_argument( err );  
  }  

  //  ele_iso_mvaID_ = new ElectronMVAEstimator(ele_iso_path_mvaWeightFile_);
  useProtectionsForJetMET_ = useProtectionsForJetMET;

  pfegamma_ =  new PFEGammaFilters(ph_MinEt,
                   ph_combIso,
                   ph_HoE,
                   ph_sietaieta_eb,
                   ph_sietaieta_ee,
                   ph_protectionsForJetMET,
                   ele_iso_pt,
                   ele_iso_mva_barrel,
                   ele_iso_mva_endcap,
                   ele_iso_combIso_barrel,
                   ele_iso_combIso_endcap,
                   ele_noniso_mva,
                   ele_missinghits,
                   ele_iso_path_mvaWeightFile,
                   ele_protectionsForJetMET);

  return;
}

void PFAlgo::setEGElectronCollection

(

const reco::GsfElectronCollection &

egelectrons

)

Definition at line 3501 of file PFAlgo.cc.

References pfele_, PFElectronAlgo::setEGElectronCollection(), and useEGElectrons_.

                                                                             {
  if(useEGElectrons_ && pfele_) pfele_->setEGElectronCollection(egelectrons);
}

void PFAlgo::setElectronExtraRef

(

const edm::OrphanHandle< reco::PFCandidateElectronExtraCollection > &

extrah

)

Definition at line 3718 of file PFAlgo.cc.

References alignCSCRings::e, pfCandidates_, pfElectronCandidates_, pfElectronExtra_, findQualityFiles::size, and usePFElectrons_.

                                                                                                       {
  if(!usePFElectrons_) return;
  //  std::cout << " setElectronExtraRef " << std::endl;
  unsigned size=pfCandidates_->size();

  for(unsigned ic=0;ic<size;++ic) {
    // select the electrons and add the extra
    if((*pfCandidates_)[ic].particleId()==PFCandidate::e) {
      
      PFElectronExtraEqual myExtraEqual((*pfCandidates_)[ic].gsfTrackRef());
      std::vector<PFCandidateElectronExtra>::const_iterator it=find_if(pfElectronExtra_.begin(),pfElectronExtra_.end(),myExtraEqual);
      if(it!=pfElectronExtra_.end()) {
    //  std::cout << " Index " << it-pfElectronExtra_.begin() << std::endl;
    reco::PFCandidateElectronExtraRef theRef(extrah,it-pfElectronExtra_.begin());
    (*pfCandidates_)[ic].setPFElectronExtraRef(theRef);
      }
      else {
    (*pfCandidates_)[ic].setPFElectronExtraRef(PFCandidateElectronExtraRef());
      }
    }
    else  // else save the mva and the extra as well ! 
      {
    if((*pfCandidates_)[ic].trackRef().isNonnull()) {
      PFElectronExtraKfEqual myExtraEqual((*pfCandidates_)[ic].trackRef());
      std::vector<PFCandidateElectronExtra>::const_iterator it=find_if(pfElectronExtra_.begin(),pfElectronExtra_.end(),myExtraEqual);
      if(it!=pfElectronExtra_.end()) {
        (*pfCandidates_)[ic].set_mva_e_pi(it->mvaVariable(PFCandidateElectronExtra::MVA_MVA));
        reco::PFCandidateElectronExtraRef theRef(extrah,it-pfElectronExtra_.begin());
        (*pfCandidates_)[ic].setPFElectronExtraRef(theRef);
        (*pfCandidates_)[ic].setGsfTrackRef(it->gsfTrackRef());
      } 
    }
      }

  }

  size=pfElectronCandidates_->size();
  for(unsigned ic=0;ic<size;++ic) {
    // select the electrons - this test is actually not needed for this collection
    if((*pfElectronCandidates_)[ic].particleId()==PFCandidate::e) {
      // find the corresponding extra
      PFElectronExtraEqual myExtraEqual((*pfElectronCandidates_)[ic].gsfTrackRef());
      std::vector<PFCandidateElectronExtra>::const_iterator it=find_if(pfElectronExtra_.begin(),pfElectronExtra_.end(),myExtraEqual);
      if(it!=pfElectronExtra_.end()) {
    reco::PFCandidateElectronExtraRef theRef(extrah,it-pfElectronExtra_.begin());
    (*pfElectronCandidates_)[ic].setPFElectronExtraRef(theRef);

      }
    }
  }

}

void PFAlgo::setHOTag ( bool  ho )

inline

Definition at line 62 of file PFAlgo.h.

References useHO_.

{ useHO_ = ho;}

void PFAlgo::setMuonHandle

(

const edm::Handle< reco::MuonCollection > &

muons

)

Definition at line 330 of file PFAlgo.cc.

References muonHandle_, and patZpeak::muons.

                                                                {
  muonHandle_ = muons;
}

void PFAlgo::setParameters	(	double	nSigmaECAL,
		double	nSigmaHCAL,
		const boost::shared_ptr< PFEnergyCalibration > &	calibration,
		const boost::shared_ptr< PFEnergyCalibrationHF > &	thepfEnergyCalibrationHF
	)

Definition at line 78 of file PFAlgo.cc.

References calibration_, nSigmaECAL_, nSigmaHCAL(), nSigmaHCAL_, and thepfEnergyCalibrationHF_.

                                                                                       {

  nSigmaECAL_ = nSigmaECAL;
  nSigmaHCAL_ = nSigmaHCAL;

  calibration_ = calibration;
  thepfEnergyCalibrationHF_ = thepfEnergyCalibrationHF;

}

void PFAlgo::setPFEleParameters	(	double	mvaEleCut,
		std::string	mvaWeightFileEleID,
		bool	usePFElectrons,
		const boost::shared_ptr< PFSCEnergyCalibration > &	thePFSCEnergyCalibration,
		const boost::shared_ptr< PFEnergyCalibration > &	thePFEnergyCalibration,
		double	sumEtEcalIsoForEgammaSC_barrel,
		double	sumEtEcalIsoForEgammaSC_endcap,
		double	coneEcalIsoForEgammaSC,
		double	sumPtTrackIsoForEgammaSC_barrel,
		double	sumPtTrackIsoForEgammaSC_endcap,
		unsigned int	nTrackIsoForEgammaSC,
		double	coneTrackIsoForEgammaSC,
		bool	applyCrackCorrections = false,
		bool	usePFSCEleCalib = true,
		bool	useEGElectrons = false,
		bool	useEGammaSupercluster = true
	)

Definition at line 98 of file PFAlgo.cc.

References HLT_25ns14e33_v1_cff::applyCrackCorrections, applyCrackCorrectionsElectrons_, HLT_25ns14e33_v1_cff::coneEcalIsoForEgammaSC, coneEcalIsoForEgammaSC_, HLT_25ns14e33_v1_cff::coneTrackIsoForEgammaSC, coneTrackIsoForEgammaSC_, mvaEleCut_, mvaWeightFileEleID_, HLT_25ns14e33_v1_cff::nTrackIsoForEgammaSC, nTrackIsoForEgammaSC_, pfele_, HLT_25ns14e33_v1_cff::sumEtEcalIsoForEgammaSC_barrel, sumEtEcalIsoForEgammaSC_barrel_, HLT_25ns14e33_v1_cff::sumEtEcalIsoForEgammaSC_endcap, sumEtEcalIsoForEgammaSC_endcap_, HLT_25ns14e33_v1_cff::sumPtTrackIsoForEgammaSC_barrel, sumPtTrackIsoForEgammaSC_barrel_, HLT_25ns14e33_v1_cff::sumPtTrackIsoForEgammaSC_endcap, sumPtTrackIsoForEgammaSC_endcap_, thePFSCEnergyCalibration_, HLT_25ns14e33_v1_cff::useEGammaSupercluster, useEGammaSupercluster_, useEGElectrons_, HLT_25ns14e33_v1_cff::usePFElectrons, usePFElectrons_, HLT_25ns14e33_v1_cff::usePFSCEleCalib, and usePFSCEleCalib_.

                                           {
  
  mvaEleCut_ = mvaEleCut;
  usePFElectrons_ = usePFElectrons;
  applyCrackCorrectionsElectrons_ = applyCrackCorrections;  
  usePFSCEleCalib_ = usePFSCEleCalib;
  thePFSCEnergyCalibration_ = thePFSCEnergyCalibration;
  useEGElectrons_ = useEGElectrons;
  useEGammaSupercluster_ = useEGammaSupercluster;
  sumEtEcalIsoForEgammaSC_barrel_ = sumEtEcalIsoForEgammaSC_barrel;
  sumEtEcalIsoForEgammaSC_endcap_ = sumEtEcalIsoForEgammaSC_endcap;
  coneEcalIsoForEgammaSC_ = coneEcalIsoForEgammaSC;
  sumPtTrackIsoForEgammaSC_barrel_ = sumPtTrackIsoForEgammaSC_barrel;
  sumPtTrackIsoForEgammaSC_endcap_ = sumPtTrackIsoForEgammaSC_endcap;
  coneTrackIsoForEgammaSC_ = coneTrackIsoForEgammaSC;
  nTrackIsoForEgammaSC_ = nTrackIsoForEgammaSC;


  if(!usePFElectrons_) return;
  mvaWeightFileEleID_ = mvaWeightFileEleID;
  FILE * fileEleID = fopen(mvaWeightFileEleID_.c_str(), "r");
  if (fileEleID) {
    fclose(fileEleID);
  }
  else {
    string err = "PFAlgo: cannot open weight file '";
    err += mvaWeightFileEleID;
    err += "'";
    throw invalid_argument( err );
  }
  pfele_= new PFElectronAlgo(mvaEleCut_,mvaWeightFileEleID_,
                 thePFSCEnergyCalibration_,
                 thePFEnergyCalibration,
                 applyCrackCorrectionsElectrons_,
                 usePFSCEleCalib_,
                 useEGElectrons_,
                 useEGammaSupercluster_,
                 sumEtEcalIsoForEgammaSC_barrel_,
                 sumEtEcalIsoForEgammaSC_endcap_,
                 coneEcalIsoForEgammaSC_,
                 sumPtTrackIsoForEgammaSC_barrel_,
                 sumPtTrackIsoForEgammaSC_endcap_,
                 nTrackIsoForEgammaSC_,
                 coneTrackIsoForEgammaSC_);
}

void PFAlgo::setPFMuonAlgo ( PFMuonAlgo *  algo )

inline

Definition at line 64 of file PFAlgo.h.

References HLT_25ns14e33_v1_cff::algo, and pfmu_.

{pfmu_ =algo;}

void PFAlgo::setPFMuonAndFakeParameters

(

const edm::ParameterSet &

pset

)

Definition at line 301 of file PFAlgo.cc.

References assert(), factors45_, edm::ParameterSet::getParameter(), muonECAL_, muonHCAL_, muonHO_, nSigmaTRACK_, pfmu_, ptError_, and PFMuonAlgo::setParameters().

{




  pfmu_ = new PFMuonAlgo();
  pfmu_->setParameters(pset);

  // Muon parameters
  muonHCAL_= pset.getParameter<std::vector<double> >("muon_HCAL");  
  muonECAL_= pset.getParameter<std::vector<double> >("muon_ECAL");  
  muonHO_= pset.getParameter<std::vector<double> >("muon_HO");  
  assert ( muonHCAL_.size() == 2 && muonECAL_.size() == 2 && muonHO_.size() == 2);
  nSigmaTRACK_= pset.getParameter<double>("nsigma_TRACK");  
  ptError_= pset.getParameter<double>("pt_Error");  
  factors45_ = pset.getParameter<std::vector<double> >("factors_45");  
  assert ( factors45_.size() == 2 );

}

void PFAlgo::setPFPhotonParameters	(	bool	usePFPhoton,
		std::string	mvaWeightFileConvID,
		double	mvaConvCut,
		bool	useReg,
		std::string	X0_Map,
		const boost::shared_ptr< PFEnergyCalibration > &	thePFEnergyCalibration,
		double	sumPtTrackIsoForPhoton,
		double	sumPtTrackIsoSlopeForPhoton
	)

Definition at line 160 of file PFAlgo.cc.

References alignCSCRings::e, AlCaHLTBitMon_ParallelJobs::p, pfpho_, primaryVertex_, MetAnalyzer::pv(), HLT_25ns14e33_v1_cff::usePFPhotons, usePFPhotons_, useVertices_, and hltvertexperformanceanalyzer_cfi::Vertex.

 {

  usePFPhotons_ = usePFPhotons;

  //for MVA pass PV if there is one in the collection otherwise pass a dummy    
  reco::Vertex dummy;  
  if(useVertices_)  
    {  
      dummy = primaryVertex_;  
    }  
  else { // create a dummy PV  
    reco::Vertex::Error e;  
    e(0, 0) = 0.0015 * 0.0015;  
    e(1, 1) = 0.0015 * 0.0015;  
    e(2, 2) = 15. * 15.;  
    reco::Vertex::Point p(0, 0, 0);  
    dummy = reco::Vertex(p, e, 0, 0, 0);  
  }  
  // pv=&dummy;  
  if(! usePFPhotons_) return;  
  FILE * filePhotonConvID = fopen(mvaWeightFileConvID.c_str(), "r");  
  if (filePhotonConvID) {  
    fclose(filePhotonConvID);  
  }  
  else {  
    string err = "PFAlgo: cannot open weight file '";  
    err += mvaWeightFileConvID;  
    err += "'";  
    throw invalid_argument( err );  
  }  
  const reco::Vertex* pv=&dummy;  
  pfpho_ = new PFPhotonAlgo(mvaWeightFileConvID, 
                mvaConvCut, 
                useReg,
                X0_Map,  
                *pv,
                thePFEnergyCalibration,
                            sumPtTrackIsoForPhoton,
                            sumPtTrackIsoSlopeForPhoton
                );
  return;
}

void PFAlgo::setPFPhotonRegWeights	(	const GBRForest *	LCorrForestEB,
		const GBRForest *	LCorrForestEE,
		const GBRForest *	GCorrForestBarrel,
		const GBRForest *	GCorrForestEndcapHr9,
		const GBRForest *	GCorrForestEndcapLr9,
		const GBRForest *	PFEcalResolution
	)

Definition at line 288 of file PFAlgo.cc.

References pfpho_, and PFPhotonAlgo::setGBRForest().

                    {
  
  pfpho_->setGBRForest(LCorrForestEB,LCorrForestEE,
               GCorrForestBarrel, GCorrForestEndcapHr9, 
               GCorrForestEndcapLr9, PFEcalResolution);
}

void PFAlgo::setPFVertexParameters	(	bool	useVertex,
		const reco::VertexCollection *	primaryVertices
	)

Definition at line 371 of file PFAlgo.cc.

References alignCSCRings::e, i, nVtx_, AlCaHLTBitMon_ParallelJobs::p, pfmu_, pfpho_, primaryVertex_, PFMuonAlgo::setInputsForCleaning(), PFPhotonAlgo::setnPU(), PFPhotonAlgo::setPhotonPrimaryVtx(), usePFPhotons_, HLT_25ns14e33_v1_cff::useVertex, useVertices_, and hltvertexperformanceanalyzer_cfi::Vertex.

                                                                {
  useVertices_ = useVertex;

  //Set the vertices for muon cleaning
  pfmu_->setInputsForCleaning(primaryVertices);


  //Now find the primary vertex!
  bool primaryVertexFound = false;
  nVtx_ = primaryVertices->size();
  if(usePFPhotons_){
    pfpho_->setnPU(nVtx_);
  }
  for (unsigned short i=0 ;i<primaryVertices->size();++i)
    {
      if(primaryVertices->at(i).isValid()&&(!primaryVertices->at(i).isFake()))
    {
      primaryVertex_ = primaryVertices->at(i);
      primaryVertexFound = true;
          break;
    }
    }
  //Use vertices if the user wants to but only if it exists a good vertex 
  useVertices_ = useVertex && primaryVertexFound; 
  if(usePFPhotons_) {
    if (useVertices_ ){
      pfpho_->setPhotonPrimaryVtx(primaryVertex_ );
    }
    else{
      reco::Vertex::Error e;  
      e(0, 0) = 0.0015 * 0.0015;  
      e(1, 1) = 0.0015 * 0.0015;  
      e(2, 2) = 15. * 15.;  
      reco::Vertex::Point p(0, 0, 0);  
      reco::Vertex dummy = reco::Vertex(p, e, 0, 0, 0); 
      //      std::cout << " PFPho " << pfpho_ << std::endl;
      pfpho_->setPhotonPrimaryVtx(dummy);
    }
  }
}

void PFAlgo::setPhotonExtraRef

(

const edm::OrphanHandle< reco::PFCandidatePhotonExtraCollection > &

pf_extrah

)

Definition at line 3770 of file PFAlgo.cc.

References newFWLiteAna::found, pfCandidates_, pfPhotonExtra_, findQualityFiles::size, and usePFPhotons_.

                                                                                                      {
  if(!usePFPhotons_) return;  
  unsigned int size=pfCandidates_->size();
  unsigned int sizePhExtra = pfPhotonExtra_.size();
  for(unsigned ic=0;ic<size;++ic) {
    // select the electrons and add the extra
    if((*pfCandidates_)[ic].particleId()==PFCandidate::gamma && (*pfCandidates_)[ic].mva_nothing_gamma() > 0.99) {
      if((*pfCandidates_)[ic].superClusterRef().isNonnull()) {
    bool found = false;
    for(unsigned pcextra=0;pcextra<sizePhExtra;++pcextra) {
      if((*pfCandidates_)[ic].superClusterRef() == pfPhotonExtra_[pcextra].superClusterRef()) {
        reco::PFCandidatePhotonExtraRef theRef(ph_extrah,pcextra);
        (*pfCandidates_)[ic].setPFPhotonExtraRef(theRef);
        found = true;
        break;
      }
    }
    if(!found) 
      (*pfCandidates_)[ic].setPFPhotonExtraRef((PFCandidatePhotonExtraRef())); // null ref
      }
      else {
    (*pfCandidates_)[ic].setPFPhotonExtraRef((PFCandidatePhotonExtraRef())); // null ref
      }
    }
  }      
}

void PFAlgo::setPostHFCleaningParameters	(	bool	postHFCleaning,
		double	minHFCleaningPt,
		double	minSignificance,
		double	maxSignificance,
		double	minSignificanceReduction,
		double	maxDeltaPhiPt,
		double	minDeltaMet
	)

Definition at line 336 of file PFAlgo.cc.

References HLT_25ns14e33_v1_cff::maxDeltaPhiPt, maxDeltaPhiPt_, HLT_25ns14e33_v1_cff::maxSignificance, maxSignificance_, HLT_25ns14e33_v1_cff::minDeltaMet, minDeltaMet_, HLT_25ns14e33_v1_cff::minHFCleaningPt, minHFCleaningPt_, HLT_25ns14e33_v1_cff::minSignificance, minSignificance_, HLT_25ns14e33_v1_cff::minSignificanceReduction, minSignificanceReduction_, HLT_25ns14e33_v1_cff::postHFCleaning, and postHFCleaning_.

                                        { 
  postHFCleaning_ = postHFCleaning;
  minHFCleaningPt_ = minHFCleaningPt;
  minSignificance_ = minSignificance;
  maxSignificance_ = maxSignificance;
  minSignificanceReduction_= minSignificanceReduction;
  maxDeltaPhiPt_ = maxDeltaPhiPt;
  minDeltaMet_ = minDeltaMet;
}

boost::shared_ptr<PFEnergyCalibration> PFAlgo::thePFEnergyCalibration ( )

inline

return the pointer to the calibration function

Definition at line 234 of file PFAlgo.h.

References calibration_.

                                                                { 
    return calibration_;
  }

std::auto_ptr< reco::PFCandidateCollection > PFAlgo::transferCandidates ( )

inline

Returns

auto_ptr to the collection of candidates (transfers ownership)

Definition at line 229 of file PFAlgo.h.

References PFCandConnector::connect(), connector_, and pfCandidates_.

                                                                 {
    return connector_.connect(pfCandidates_);
  }

std::auto_ptr< reco::PFCandidateCollection >& PFAlgo::transferCleanedCandidates ( )

inline

Returns

collection of cleaned HF candidates

Definition at line 224 of file PFAlgo.h.

References pfCleanedCandidates_.

                                                                        {
    return pfCleanedCandidates_;
  }

std::auto_ptr< reco::PFCandidateCollection> PFAlgo::transferElectronCandidates ( )

inline

Returns

the unfiltered electron collection

Definition at line 201 of file PFAlgo.h.

References pfElectronCandidates_.

                                                                        {
    return pfElectronCandidates_;
  }

std::auto_ptr< reco::PFCandidateElectronExtraCollection> PFAlgo::transferElectronExtra ( )

inline

Returns

the unfiltered electron extra collection

Definition at line 207 of file PFAlgo.h.

References pfElectronExtra_, and query::result.

                                                                                {
    std::auto_ptr< reco::PFCandidateElectronExtraCollection> result(new reco::PFCandidateElectronExtraCollection);
    result->insert(result->end(),pfElectronExtra_.begin(),pfElectronExtra_.end());
    return result;
  }

std::auto_ptr< reco::PFCandidatePhotonExtraCollection> PFAlgo::transferPhotonExtra ( )

inline

Returns

the unfiltered photon extra collection

Definition at line 216 of file PFAlgo.h.

References pfPhotonExtra_, and query::result.

                                                                            {
    std::auto_ptr< reco::PFCandidatePhotonExtraCollection> result(new reco::PFCandidatePhotonExtraCollection);
    result->insert(result->end(),pfPhotonExtra_.begin(),pfPhotonExtra_.end());
    return result;
  }

Friends And Related Function Documentation

std::ostream& operator<< ( std::ostream &  out, const PFAlgo &  algo  )

friend

Member Data Documentation

int PFAlgo::algo_

private

Definition at line 335 of file PFAlgo.h.

Referenced by setAlgo().

bool PFAlgo::applyCrackCorrectionsElectrons_

private

Definition at line 344 of file PFAlgo.h.

Referenced by setPFEleParameters().

reco::PFBlockHandle PFAlgo::blockHandle_

private

input block handle (full framework case)

Definition at line 322 of file PFAlgo.h.

Referenced by createBlockRef(), and reconstructParticles().

boost::shared_ptr<PFEnergyCalibration> PFAlgo::calibration_

private

Definition at line 330 of file PFAlgo.h.

Referenced by operator<<(), processBlock(), setParameters(), and thePFEnergyCalibration().

double PFAlgo::coneEcalIsoForEgammaSC_

private

Definition at line 350 of file PFAlgo.h.

Referenced by setPFEleParameters().

double PFAlgo::coneTrackIsoForEgammaSC_

private

Definition at line 353 of file PFAlgo.h.

Referenced by setPFEleParameters().

PFCandConnector PFAlgo::connector_

private

A tool used for a postprocessing of displaced vertices based on reconstructed PFCandidates

Definition at line 388 of file PFAlgo.h.

Referenced by setCandConnectorParameters(), setDebug(), and transferCandidates().

bool PFAlgo::debug_

private

Definition at line 336 of file PFAlgo.h.

Referenced by checkCleaning(), processBlock(), reconstructCluster(), reconstructParticles(), reconstructTrack(), and setDebug().

double PFAlgo::dptRel_DispVtx_

private

Maximal relative uncertainty on the tracks going to or incoming from the displcaed vertex to be used in the PFAlgo

Definition at line 383 of file PFAlgo.h.

Referenced by processBlock(), reconstructTrack(), and setDisplacedVerticesParameters().

std::vector<double> PFAlgo::factors45_

private

Definition at line 396 of file PFAlgo.h.

Referenced by processBlock(), and setPFMuonAndFakeParameters().

double PFAlgo::maxDeltaPhiPt_

private

Definition at line 405 of file PFAlgo.h.

Referenced by postCleaning(), and setPostHFCleaningParameters().

double PFAlgo::maxSignificance_

private

Definition at line 403 of file PFAlgo.h.

Referenced by postCleaning(), and setPostHFCleaningParameters().

double PFAlgo::minDeltaMet_

private

Definition at line 406 of file PFAlgo.h.

Referenced by checkCleaning(), postCleaning(), and setPostHFCleaningParameters().

double PFAlgo::minHFCleaningPt_

private

Definition at line 401 of file PFAlgo.h.

Referenced by postCleaning(), and setPostHFCleaningParameters().

double PFAlgo::minSignificance_

private

Definition at line 402 of file PFAlgo.h.

Referenced by postCleaning(), and setPostHFCleaningParameters().

double PFAlgo::minSignificanceReduction_

private

Definition at line 404 of file PFAlgo.h.

Referenced by postCleaning(), and setPostHFCleaningParameters().

std::vector<double> PFAlgo::muonECAL_

private

Definition at line 392 of file PFAlgo.h.

Referenced by processBlock(), and setPFMuonAndFakeParameters().

edm::Handle<reco::MuonCollection> PFAlgo::muonHandle_

private

Definition at line 413 of file PFAlgo.h.

Referenced by reconstructParticles(), and setMuonHandle().

std::vector<double> PFAlgo::muonHCAL_

private

Variables for muons and fakes.

Definition at line 391 of file PFAlgo.h.

Referenced by processBlock(), and setPFMuonAndFakeParameters().

std::vector<double> PFAlgo::muonHO_

private

Definition at line 393 of file PFAlgo.h.

Referenced by processBlock(), and setPFMuonAndFakeParameters().

double PFAlgo::mvaEleCut_

private

Definition at line 341 of file PFAlgo.h.

Referenced by setPFEleParameters().

std::string PFAlgo::mvaWeightFileEleID_

private

Variables for PFElectrons.

Definition at line 339 of file PFAlgo.h.

Referenced by setPFEleParameters().

double PFAlgo::nSigmaECAL_

private

number of sigma to judge energy excess in ECAL

Definition at line 325 of file PFAlgo.h.

Referenced by operator<<(), processBlock(), and setParameters().

double PFAlgo::nSigmaHCAL_

private

number of sigma to judge energy excess in HCAL

Definition at line 328 of file PFAlgo.h.

Referenced by nSigmaHCAL(), operator<<(), and setParameters().

double PFAlgo::nSigmaTRACK_

private

Definition at line 394 of file PFAlgo.h.

Referenced by processBlock(), and setPFMuonAndFakeParameters().

unsigned int PFAlgo::nTrackIsoForEgammaSC_

private

Definition at line 354 of file PFAlgo.h.

Referenced by setPFEleParameters().

int PFAlgo::nVtx_

private

Definition at line 384 of file PFAlgo.h.

Referenced by processBlock(), and setPFVertexParameters().

std::auto_ptr< reco::PFCandidateCollection > PFAlgo::pfCandidates_

protected

Definition at line 284 of file PFAlgo.h.

Referenced by checkCleaning(), operator<<(), pfCandidates(), postCleaning(), processBlock(), reconstructCluster(), reconstructParticles(), reconstructTrack(), setElectronExtraRef(), setPhotonExtraRef(), and transferCandidates().

std::auto_ptr< reco::PFCandidateCollection > PFAlgo::pfCleanedCandidates_

protected

Definition at line 290 of file PFAlgo.h.

Referenced by postCleaning(), reconstructParticles(), and transferCleanedCandidates().

PFEGammaFilters* PFAlgo::pfegamma_

private

Definition at line 362 of file PFAlgo.h.

Referenced by processBlock(), setEGammaParameters(), and ~PFAlgo().

const edm::View<reco::PFCandidate>* PFAlgo::pfEgammaCandidates_

private

Definition at line 364 of file PFAlgo.h.

Referenced by processBlock(), and setEGammaCollections().

PFElectronAlgo* PFAlgo::pfele_

private

Definition at line 355 of file PFAlgo.h.

Referenced by processBlock(), setEGElectronCollection(), setPFEleParameters(), and ~PFAlgo().

std::auto_ptr< reco::PFCandidateCollection > PFAlgo::pfElectronCandidates_

protected

the unfiltered electron collection

Definition at line 286 of file PFAlgo.h.

Referenced by processBlock(), reconstructParticles(), setElectronExtraRef(), and transferElectronCandidates().

reco::PFCandidateElectronExtraCollection PFAlgo::pfElectronExtra_

protected

the unfiltered electron collection

Definition at line 293 of file PFAlgo.h.

Referenced by processBlock(), reconstructParticles(), setElectronExtraRef(), and transferElectronExtra().

PFMuonAlgo* PFAlgo::pfmu_

private

Definition at line 357 of file PFAlgo.h.

Referenced by getPFMuonAlgo(), reconstructParticles(), reconstructTrack(), setPFMuonAlgo(), setPFMuonAndFakeParameters(), and setPFVertexParameters().

PFPhotonAlgo* PFAlgo::pfpho_

private

Definition at line 356 of file PFAlgo.h.

Referenced by processBlock(), setPFPhotonParameters(), setPFPhotonRegWeights(), setPFVertexParameters(), and ~PFAlgo().

std::auto_ptr< reco::PFCandidateCollection > PFAlgo::pfPhotonCandidates_

protected

the unfiltered photon collection

Definition at line 288 of file PFAlgo.h.

Referenced by processBlock(), and reconstructParticles().

reco::PFCandidatePhotonExtraCollection PFAlgo::pfPhotonExtra_

protected

the extra photon collection

Definition at line 295 of file PFAlgo.h.

Referenced by processBlock(), reconstructParticles(), setPhotonExtraRef(), and transferPhotonExtra().

bool PFAlgo::postHFCleaning_

private

Definition at line 399 of file PFAlgo.h.

Referenced by postCleaning(), and setPostHFCleaningParameters().

bool PFAlgo::postMuonCleaning_

private

Definition at line 400 of file PFAlgo.h.

reco::Vertex PFAlgo::primaryVertex_

private

Definition at line 410 of file PFAlgo.h.

Referenced by processBlock(), reconstructCluster(), setPFPhotonParameters(), and setPFVertexParameters().

double PFAlgo::ptError_

private

Definition at line 395 of file PFAlgo.h.

Referenced by processBlock(), and setPFMuonAndFakeParameters().

bool PFAlgo::rejectTracks_Bad_

private

Flags to use the protection against fakes and not reconstructed displaced vertices

Definition at line 374 of file PFAlgo.h.

Referenced by processBlock(), and setDisplacedVerticesParameters().

bool PFAlgo::rejectTracks_Step45_

private

Definition at line 375 of file PFAlgo.h.

Referenced by processBlock(), and setDisplacedVerticesParameters().

std::vector<double> PFAlgo::setchi2Values_

private

Definition at line 340 of file PFAlgo.h.

double PFAlgo::sumEtEcalIsoForEgammaSC_barrel_

private

Definition at line 348 of file PFAlgo.h.

Referenced by setPFEleParameters().

double PFAlgo::sumEtEcalIsoForEgammaSC_endcap_

private

Definition at line 349 of file PFAlgo.h.

Referenced by setPFEleParameters().

double PFAlgo::sumPtTrackIsoForEgammaSC_barrel_

private

Definition at line 351 of file PFAlgo.h.

Referenced by setPFEleParameters().

double PFAlgo::sumPtTrackIsoForEgammaSC_endcap_

private

Definition at line 352 of file PFAlgo.h.

Referenced by setPFEleParameters().

boost::shared_ptr<PFEnergyCalibrationHF> PFAlgo::thepfEnergyCalibrationHF_

private

Definition at line 331 of file PFAlgo.h.

Referenced by processBlock(), and setParameters().

boost::shared_ptr<PFSCEnergyCalibration> PFAlgo::thePFSCEnergyCalibration_

private

Definition at line 332 of file PFAlgo.h.

Referenced by setPFEleParameters().

double PFAlgo::useBestMuonTrack_

private

Definition at line 407 of file PFAlgo.h.

bool PFAlgo::useEGammaFilters_

private

Variables for NEW EGAMMA selection.

Definition at line 361 of file PFAlgo.h.

Referenced by processBlock(), setEGammaCollections(), setEGammaParameters(), and ~PFAlgo().

bool PFAlgo::useEGammaSupercluster_

private

Definition at line 347 of file PFAlgo.h.

Referenced by setPFEleParameters().

bool PFAlgo::useEGElectrons_

private

Definition at line 346 of file PFAlgo.h.

Referenced by setEGElectronCollection(), and setPFEleParameters().

bool PFAlgo::useHO_

private

Definition at line 334 of file PFAlgo.h.

Referenced by processBlock(), and setHOTag().

bool PFAlgo::usePFConversions_

private

Definition at line 378 of file PFAlgo.h.

Referenced by processBlock(), and setDisplacedVerticesParameters().

bool PFAlgo::usePFDecays_

private

Definition at line 379 of file PFAlgo.h.

Referenced by isFromSecInt(), and setDisplacedVerticesParameters().

bool PFAlgo::usePFElectrons_

private

Definition at line 342 of file PFAlgo.h.

Referenced by processBlock(), setElectronExtraRef(), setPFEleParameters(), and ~PFAlgo().

bool PFAlgo::usePFMuonMomAssign_

private

Definition at line 370 of file PFAlgo.h.

bool PFAlgo::usePFNuclearInteractions_

private

Definition at line 377 of file PFAlgo.h.

Referenced by isFromSecInt(), and setDisplacedVerticesParameters().

bool PFAlgo::usePFPhotons_

private

Definition at line 343 of file PFAlgo.h.

Referenced by processBlock(), setPFPhotonParameters(), setPFVertexParameters(), setPhotonExtraRef(), and ~PFAlgo().

bool PFAlgo::usePFSCEleCalib_

private

Definition at line 345 of file PFAlgo.h.

Referenced by setPFEleParameters().

bool PFAlgo::useProtectionsForJetMET_

private

Definition at line 363 of file PFAlgo.h.

Referenced by processBlock(), and setEGammaParameters().

bool PFAlgo::useVertices_

private

Definition at line 411 of file PFAlgo.h.

Referenced by reconstructCluster(), setPFPhotonParameters(), and setPFVertexParameters().

const edm::ValueMap<reco::GsfElectronRef>* PFAlgo::valueMapGedElectrons_

private

Definition at line 365 of file PFAlgo.h.

Referenced by setEGammaCollections().

const edm::ValueMap<reco::PhotonRef>* PFAlgo::valueMapGedPhotons_

private

Definition at line 366 of file PFAlgo.h.

Referenced by setEGammaCollections().