#include <HiggsToZZ4LeptonsSkimEff.h>

Inheritance diagram for HiggsToZZ4LeptonsSkimEff:

Public Member Functions
virtual void	analyze (const edm::Event &, const edm::EventSetup &)
	Get event properties to send to builder to fill seed collection.
	HiggsToZZ4LeptonsSkimEff (const edm::ParameterSet &)
	~HiggsToZZ4LeptonsSkimEff ()
Private Attributes
bool	debug
int	nEvents
int	nFourE
int	nFourL
int	nFourM
int	nLeptonMin
int	nSelFourE
int	nSelFourL
int	nSelFourM
int	nSelTau
int	nSelTwoETwoM
int	nStiffLeptonMin
int	nTau
int	nTwoETwoM
edm::InputTag	recTrackLabel
float	softMinPt
float	stiffMinPt
edm::InputTag	theGLBMuonLabel
edm::InputTag	thePixelGsfELabel

Detailed Description

Definition at line 25 of file HiggsToZZ4LeptonsSkimEff.h.

Constructor & Destructor Documentation

HiggsToZZ4LeptonsSkimEff::HiggsToZZ4LeptonsSkimEff ( const edm::ParameterSet & pset ) [explicit]

Definition at line 41 of file HiggsToZZ4LeptonsSkimEff.cc.

References debug, edm::ParameterSet::getParameter(), and nEvents.

                                                                              {

  // Local Debug flag
  debug              = pset.getParameter<bool>("DebugHiggsToZZ4LeptonsSkim");

  // Reconstructed objects
  recTrackLabel      = pset.getParameter<edm::InputTag>("RecoTrackLabel");
  theGLBMuonLabel    = pset.getParameter<edm::InputTag>("GlobalMuonCollectionLabel");
  thePixelGsfELabel  = pset.getParameter<edm::InputTag>("ElectronCollectionLabel");

  // Minimum Pt for leptons for skimming
  // Minimum Pt for leptons for skimming
  stiffMinPt         = pset.getParameter<double>("stiffMinimumPt");
  softMinPt          = pset.getParameter<double>("softMinimumPt");
  nStiffLeptonMin    = pset.getParameter<int>("nStiffLeptonMinimum");
  nLeptonMin         = pset.getParameter<int>("nLeptonMinimum");

  nEvents   = 0;
  nSelFourE = nSelFourM = nSelTwoETwoM = nSelFourL = nSelTau = 0;
  nFourE    = nFourM    = nTwoETwoM    = nFourL    = nTau    = 0;

}

HiggsToZZ4LeptonsSkimEff::~HiggsToZZ4LeptonsSkimEff ( )

Definition at line 66 of file HiggsToZZ4LeptonsSkimEff.cc.

References gather_cfg::cout, and nEvents.

                                                    {

  std::cout << "Number of events read " << nEvents << std::endl;
  std::cout << "*** Efficiency for the various subsamples *** " <<  endl;

  std::cout << "Four leptons: " 
  << " pres "    << nFourL         
  << " kept "    << nSelFourL
  << " eff  "    << ((double)nSelFourL)/((double) nFourL + 0.0001) << std::endl;
  std::cout << "Four muons:   "
  << " pres "    << nFourM         
  << " kept "    << nSelFourM
  << " eff  "    << ((double)nSelFourM)/((double) nFourM + 0.0001) << std::endl;
  std::cout << "Four elecs:   "
  << " pres "    << nFourE         
  << " kept "    << nSelFourE
  << " eff  "    << ((double)nSelFourE)/((double) nFourE + 0.0001) << std::endl;
  std::cout << "2 elec 2 mu:  "
  << " pres "    << nTwoETwoM   
  << " kept "    << nSelTwoETwoM
  << " eff  "    << ((double)nSelTwoETwoM)/((double) nTwoETwoM + 0.0001) << std::endl;
  std::cout << "with taus:    "
  << " pres "    << nTau     
  << " kept "    << nSelTau
  << " eff  "    << ((double)nSelTau)/((double) nTau + 0.0001) << std::endl;

}

Member Function Documentation

void HiggsToZZ4LeptonsSkimEff::analyze	(	const edm::Event &	event,
		const edm::EventSetup &	setup
	)		`[virtual]`

Get event properties to send to builder to fill seed collection.

Implements edm::EDAnalyzer.

Definition at line 97 of file HiggsToZZ4LeptonsSkimEff.cc.

References genCandidates_cfi::genCandidates, reco::isTau(), edm::HandleBase::isValid(), ExpressReco_HICollisions_FallBack::muons, nEvents, and edm::Handle< T >::product().

                                                                                         {

  nEvents++;

  using reco::TrackCollection;

  bool keepEvent   = false;

  // First, pre-selection:
  int nMuon = 0;
  int nElec = 0;
  int nTau  = 0;

  bool isFourE = false;
  bool isFourM = false;
  bool isTwoETwoM = false;
  bool isFourL = false;
  bool isTau = false;

  // get gen particle candidates
  edm::Handle<CandidateCollection> genCandidates;
  event.getByLabel("genParticleCandidates", genCandidates);

  for ( CandidateCollection::const_iterator mcIter=genCandidates->begin(); mcIter!=genCandidates->end(); ++mcIter ) {

    // Muons:
    if ( mcIter->pdgId() == 13 || mcIter->pdgId() == -13) {
      // Mother is a Z
      if ( mcIter->mother()->pdgId() == 23 ) {
       // In fiducial volume:
        if ( mcIter->eta() > -2.4 && mcIter->eta() < 2.4 ) nMuon++;
      }
    }
    // Electrons:
    if ( mcIter->pdgId() == 11 || mcIter->pdgId() == -11) {
      // Mother is a Z
      if ( mcIter->mother()->pdgId() == 23 ) {
        // In fiducial volume:
        if ( mcIter->eta() > -2.5 && mcIter->eta() < 2.5 ) nElec++;
      }
    }
    // Taus:
    if ( mcIter->pdgId() == 15 || mcIter->pdgId() == -15) {
      // Mother is a Z
      if ( mcIter->mother()->pdgId() == 23 ) {
        // In fiducial volume:
        if ( mcIter->eta() > -2.5 && mcIter->eta() < 2.5 ) nTau++;
      }
    }

  }
   
    if (nElec > 3) {
      isFourE = true;
      nFourE++;
    }
    if (nMuon > 3) {
      isFourM = true;
      nFourM++;
    }
    if (nMuon > 1 && nElec > 1) {
      isTwoETwoM = true;
      nTwoETwoM++;
    }
    if ( isFourE || isFourM || isTwoETwoM ) {
      isFourL = true;
      nFourL++;
    }
    if (nTau > 1) {
      isTau = true;
      nTau++;
    }

  if ( isFourL ) {
    keepEvent = true;
  } else {
    return;
  }


  int  nStiffLeptons = 0;
  int  nLeptons      = 0;

  // First look at muons:

  // Get the muon track collection from the event
  edm::Handle<reco::TrackCollection> muTracks;
  event.getByLabel(theGLBMuonLabel.label(), muTracks);
 
  if ( muTracks.isValid() ) {   
    reco::TrackCollection::const_iterator muons;
        
    // Loop over muon collections and count how many muons there are, 
    // and how many are above threshold
    for ( muons = muTracks->begin(); muons != muTracks->end(); ++muons ) {
      float pt_mu =  muons->pt();
      if ( pt_mu > stiffMinPt ) nStiffLeptons++; 
      if ( pt_mu > softMinPt ) nLeptons++; 
    }  
  } 
  

  // Now look at electrons:

  // Get the electron track collection from the event
  edm::Handle<reco::GsfElectronCollection> pTracks;
  event.getByLabel(thePixelGsfELabel.label(),pTracks);

  if ( pTracks.isValid() ) { 

    const reco::GsfElectronCollection* eTracks = pTracks.product();

    reco::GsfElectronCollection::const_iterator electrons;

    // Loop over electron collections and count how many muons there are, 
    // and how many are above threshold
    for ( electrons = eTracks->begin(); electrons != eTracks->end(); ++electrons ) {
      float pt_e = electrons->pt(); 
      if ( pt_e > stiffMinPt ) nStiffLeptons++; 
      if ( pt_e > softMinPt ) nLeptons++; 
    }
  }

  
  // Make decision:
  if ( nStiffLeptons >= nStiffLeptonMin && nLeptons >= nLeptonMin) {
    keepEvent = true;
  } else {
    keepEvent = false;
  }

  if ( keepEvent ) {
    if (isFourE)    nSelFourE++;
    if (isFourM)    nSelFourM++;
    if (isTwoETwoM) nSelTwoETwoM++;
    if (isFourL)    nSelFourL++;
    if (isTau)      nSelTau++;
  }

}