PrimaryVertexAssignment Class Reference

#include <PrimaryVertexAssignment.h>

Public Types
enum	Quality {   UsedInFit =7, PrimaryDz =6, PrimaryV0 =5, BTrack =4,   Unused =3, OtherDz =2, NotReconstructedPrimary =1, Unassigned =0 }

Public Member Functions
std::pair< int, PrimaryVertexAssignment::Quality >	chargedHadronVertex (const reco::VertexCollection &vertices, const reco::TrackRef &trackRef, const reco::Track *track, float trackTime, float trackTimeResolution, const edm::View< reco::Candidate > &jets, const TransientTrackBuilder &builder) const
std::pair< int, PrimaryVertexAssignment::Quality >	chargedHadronVertex (const reco::VertexCollection &vertices, const reco::TrackRef &trackRef, float trackTime, float trackTimeResolution, const edm::View< reco::Candidate > &jets, const TransientTrackBuilder &builder) const
std::pair< int, PrimaryVertexAssignment::Quality >	chargedHadronVertex (const reco::VertexCollection &vertices, const reco::PFCandidate &pfcand, const edm::View< reco::Candidate > &jets, const TransientTrackBuilder &builder) const
std::pair< int, PrimaryVertexAssignment::Quality >	chargedHadronVertex (const reco::VertexCollection &vertices, const reco::RecoChargedRefCandidate &chcand, const edm::ValueMap< float > *trackTimeTag, const edm::ValueMap< float > *trackTimeResoTag, const edm::View< reco::Candidate > &jets, const TransientTrackBuilder &builder) const
	PrimaryVertexAssignment (const edm::ParameterSet &iConfig)
	~PrimaryVertexAssignment ()

Private Attributes
double	maxDistanceToJetAxis_
double	maxDtSigForPrimaryAssignment_
double	maxDxyForJetAxisAssigment_
double	maxDxyForNotReconstructedPrimary_
double	maxDxySigForNotReconstructedPrimary_
double	maxDzErrorForPrimaryAssignment_
double	maxDzForJetAxisAssigment_
double	maxDzForPrimaryAssignment_
double	maxDzSigForPrimaryAssignment_
double	maxJetDeltaR_
double	minJetPt_
bool	preferHighRanked_
bool	useTiming_

Detailed Description

Definition at line 18 of file PrimaryVertexAssignment.h.

Member Enumeration Documentation

enum PrimaryVertexAssignment::Quality

Enumerator
UsedInFit
PrimaryDz
PrimaryV0
BTrack
Unused
OtherDz
NotReconstructedPrimary
Unassigned

Definition at line 20 of file PrimaryVertexAssignment.h.

{UsedInFit=7,PrimaryDz=6,PrimaryV0=5,BTrack=4,Unused=3,OtherDz=2,NotReconstructedPrimary=1,Unassigned=0};

Constructor & Destructor Documentation

PrimaryVertexAssignment::PrimaryVertexAssignment ( const edm::ParameterSet &  iConfig )

inline

Definition at line 22 of file PrimaryVertexAssignment.h.

                                                         :
   maxDzSigForPrimaryAssignment_(iConfig.getParameter<double>("maxDzSigForPrimaryAssignment")),
   maxDzForPrimaryAssignment_(iConfig.getParameter<double>("maxDzForPrimaryAssignment")),
   maxDzErrorForPrimaryAssignment_(iConfig.getParameter<double>("maxDzErrorForPrimaryAssignment")),
   maxDtSigForPrimaryAssignment_(iConfig.getParameter<double>("maxDtSigForPrimaryAssignment")),   
   maxJetDeltaR_(iConfig.getParameter<double>("maxJetDeltaR")),
   minJetPt_(iConfig.getParameter<double>("minJetPt")),
   maxDistanceToJetAxis_(iConfig.getParameter<double>("maxDistanceToJetAxis")),
   maxDzForJetAxisAssigment_(iConfig.getParameter<double>("maxDzForJetAxisAssigment")),
   maxDxyForJetAxisAssigment_(iConfig.getParameter<double>("maxDxyForJetAxisAssigment")),
   maxDxySigForNotReconstructedPrimary_(iConfig.getParameter<double>("maxDxySigForNotReconstructedPrimary")),
   maxDxyForNotReconstructedPrimary_(iConfig.getParameter<double>("maxDxyForNotReconstructedPrimary")),
   useTiming_(iConfig.getParameter<bool>("useTiming")),
   preferHighRanked_(iConfig.getParameter<bool>("preferHighRanked"))
  {}

PrimaryVertexAssignment::~PrimaryVertexAssignment ( )

inline

Definition at line 38 of file PrimaryVertexAssignment.h.

References chargedHadronVertex(), fwrapper::jets, HiIsolationCommonParameters_cff::track, and electrons_cff::vertices.

{}

Member Function Documentation

std::pair< int, PrimaryVertexAssignment::Quality > PrimaryVertexAssignment::chargedHadronVertex	(	const reco::VertexCollection &	vertices,
		const reco::TrackRef &	trackRef,
		const reco::Track *	track,
		float	trackTime,
		float	trackTimeResolution,
		const edm::View< reco::Candidate > &	jets,
		const TransientTrackBuilder &	builder
	)		const

Definition at line 11 of file PrimaryVertexAssignment.cc.

References funct::abs(), edm::View< T >::at(), edm::View< T >::begin(), BTrack, TransientTrackBuilder::build(), reco::deltaR(), boostedElectronIsolation_cff::deltaR, SoftLeptonByDistance_cfi::distance, dt, reco::TrackBase::dxy(), reco::TrackBase::dxyError(), PVValHelper::dz, reco::TrackBase::dz(), reco::TrackBase::dzError(), MillePedeFileConverter_cfg::e, edm::View< T >::end(), edm::isNotFinite(), boostedTaus_cff::jetIdx, IPTools::jetTrackDistance(), SiStripPI::max, maxDistanceToJetAxis_, maxDtSigForPrimaryAssignment_, maxDxyForJetAxisAssigment_, maxDxyForNotReconstructedPrimary_, maxDxySigForNotReconstructedPrimary_, maxDzErrorForPrimaryAssignment_, maxDzForJetAxisAssigment_, maxDzForPrimaryAssignment_, maxDzSigForPrimaryAssignment_, maxJetDeltaR_, minJetPt_, NotReconstructedPrimary, or, OtherDz, preferHighRanked_, PrimaryDz, mathSSE::sqrt(), Unassigned, UsedInFit, useTiming_, extraflags_cff::vtx, and w.

Referenced by chargedHadronVertex(), PrimaryVertexSorter< ParticlesCollection >::runAlgo(), and ~PrimaryVertexAssignment().

                                                                               {

  typedef reco::VertexCollection::const_iterator IV;
  typedef reco::Vertex::trackRef_iterator IT;

  int iVertex = -1;
  size_t index=0;
  float bestweight=0;
  for( auto const & vtx : vertices) {
      float w = vtx.trackWeight(trackRef);
      if (w > bestweight){
        bestweight=w;
        iVertex=index;
      }        
      index++;
  }
  
  bool useTime = useTiming_;
  if (edm::isNotFinite(time) || timeReso<1e-6) {
    useTime = false;
    time = 0.;
    timeReso = -1.;
  }
  
  if (preferHighRanked_) {
    for(IV iv=vertices.begin(); iv!=vertices.end(); ++iv) {
        int ivtx = iv - vertices.begin();
        if (iVertex == ivtx) return std::pair<int,PrimaryVertexAssignment::Quality>(ivtx,PrimaryVertexAssignment::UsedInFit);
        
        double dz = std::abs(track->dz(iv->position()));
        double dt = std::abs(time-iv->t());
        
        bool useTimeVtx = useTime && iv->tError()>0.;
        
        if ((dz < maxDzForPrimaryAssignment_ or dz/track->dzError() < maxDzSigForPrimaryAssignment_ ) and (!useTimeVtx or dt/timeReso < maxDtSigForPrimaryAssignment_)) {
          return std::pair<int,PrimaryVertexAssignment::Quality>(ivtx,PrimaryVertexAssignment::PrimaryDz);
        }               
    }
  }

    
  if(iVertex >= 0 ) return std::pair<int,PrimaryVertexAssignment::Quality>(iVertex,PrimaryVertexAssignment::UsedInFit);
    
  double distmin = std::numeric_limits<double>::max();
  double dzmin = std::numeric_limits<double>::max();
  double dtmin = std::numeric_limits<double>::max();
  int vtxIdMinSignif = -1;
  for(IV iv=vertices.begin(); iv!=vertices.end(); ++iv) {
    double dz = std::abs(track->dz(iv->position()));
    double dt = std::abs(time-iv->t());
    
    double dzsig = dz/track->dzError();
    double dist = dzsig*dzsig;
    
    bool useTimeVtx = useTime && iv->tError()>0.;
    if (useTime && !useTimeVtx) {
      dt = timeReso;
    }
    
    if (useTime) {
      double dtsig = dt/timeReso;
              
      dist += dtsig*dtsig;
    }
    if(dist<distmin) {
      distmin = dist;
      dzmin = dz;
      dtmin = dt;
      vtxIdMinSignif = iv-vertices.begin();
    }
  }
      
  // first use "closest in Z" with tight cuts (targetting primary particles)
    const float add_cov = vtxIdMinSignif >= 0 ? vertices[vtxIdMinSignif].covariance(2,2) : 0.f;
    const float dzE=sqrt(track->dzError()*track->dzError()+add_cov);
    if(vtxIdMinSignif>=0 and 
       (dzmin < maxDzForPrimaryAssignment_ and dzmin/dzE < maxDzSigForPrimaryAssignment_  and track->dzError()<maxDzErrorForPrimaryAssignment_) and
       (!useTime or dtmin/timeReso < maxDtSigForPrimaryAssignment_) )
    {
        iVertex=vtxIdMinSignif;
    }
 
  if(iVertex >= 0 ) return std::pair<int,PrimaryVertexAssignment::Quality>(iVertex,PrimaryVertexAssignment::PrimaryDz);

  
  
  // if track not assigned yet, it could be a b-decay secondary , use jet axis dist criterion
    // first find the closest jet within maxJetDeltaR_
    int jetIdx = -1;
    double minDeltaR = maxJetDeltaR_;
    for(edm::View<reco::Candidate>::const_iterator ij=jets.begin(); ij!=jets.end(); ++ij)
    {
      if( ij->pt() < minJetPt_ ) continue; // skip jets below the jet Pt threshold

      double deltaR = reco::deltaR( *ij, *track );
      if( deltaR < minDeltaR and track->dzError()<maxDzErrorForPrimaryAssignment_ )
      {
        minDeltaR = deltaR;
        jetIdx = std::distance(jets.begin(), ij);
      }
    }
    // if jet found
    if( jetIdx!=-1 )
    {
      reco::TransientTrack transientTrack = builder.build(*track);
      GlobalVector direction(jets.at(jetIdx).px(), jets.at(jetIdx).py(), jets.at(jetIdx).pz());
      // find the vertex with the smallest distanceToJetAxis that is still within maxDistaneToJetAxis_
      int vtxIdx = -1;
      double minDistanceToJetAxis = maxDistanceToJetAxis_;
      for(IV iv=vertices.begin(); iv!=vertices.end(); ++iv)
      {
        // only check for vertices that are close enough in Z and for tracks that have not too high dXY
        if(std::abs(track->dz(iv->position())) > maxDzForJetAxisAssigment_ || std::abs(track->dxy(iv->position())) > maxDxyForJetAxisAssigment_) 
          continue;

        double distanceToJetAxis = IPTools::jetTrackDistance(transientTrack, direction, *iv).second.value();
        if( distanceToJetAxis < minDistanceToJetAxis )
        {
          minDistanceToJetAxis = distanceToJetAxis;
          vtxIdx = std::distance(vertices.begin(), iv);
        }
      }
      if( vtxIdx>=0 )
      {
        iVertex=vtxIdx;
      }
    }
  if(iVertex >= 0 )
     return std::pair<int,PrimaryVertexAssignment::Quality>(iVertex,PrimaryVertexAssignment::BTrack);

  // if the track is not compatible with other PVs but is compatible with the BeamSpot, we may simply have not reco'ed the PV!
  //  we still point it to the closest in Z, but flag it as possible orphan-primary
  if(!vertices.empty() && std::abs(track->dxy(vertices[0].position()))<maxDxyForNotReconstructedPrimary_ && std::abs(track->dxy(vertices[0].position())/track->dxyError())<maxDxySigForNotReconstructedPrimary_)
     return std::pair<int,PrimaryVertexAssignment::Quality>(vtxIdMinSignif,PrimaryVertexAssignment::NotReconstructedPrimary);
 
  //FIXME: here we could better handle V0s and NucInt

  // all other tracks could be non-B secondaries and we just attach them with closest Z
  if(vtxIdMinSignif>=0)
     return std::pair<int,PrimaryVertexAssignment::Quality>(vtxIdMinSignif,PrimaryVertexAssignment::OtherDz);
  //If for some reason even the dz failed (when?) we consider the track not assigned
  return std::pair<int,PrimaryVertexAssignment::Quality>(-1,PrimaryVertexAssignment::Unassigned);
}

std::pair<int,PrimaryVertexAssignment::Quality> PrimaryVertexAssignment::chargedHadronVertex ( const reco::VertexCollection &  vertices, const reco::TrackRef &  trackRef, float  trackTime, float  trackTimeResolution, const edm::View< reco::Candidate > &  jets, const TransientTrackBuilder &  builder  ) const

inline

Definition at line 48 of file PrimaryVertexAssignment.h.

References chargedHadronVertex().

 {
    return chargedHadronVertex(vertices,trackRef,&(*trackRef),trackTime,trackTimeResolution,jets,builder);
 }

std::pair<int,PrimaryVertexAssignment::Quality> PrimaryVertexAssignment::chargedHadronVertex ( const reco::VertexCollection &  vertices, const reco::PFCandidate &  pfcand, const edm::View< reco::Candidate > &  jets, const TransientTrackBuilder &  builder  ) const

inline

Definition at line 58 of file PrimaryVertexAssignment.h.

References chargedHadronVertex(), reco::PFCandidate::gsfTrackRef(), edm::Ref< C, T, F >::isNull(), reco::PFCandidate::isTimeValid(), fwrapper::jets, protons_cff::time, reco::PFCandidate::time(), reco::PFCandidate::timeError(), muonGEMDigis_cfi::timeResolution, reco::PFCandidate::trackRef(), Unassigned, and useTiming_.

                                                                               {
          float time = 0, timeResolution = -1;
          if (useTiming_ && pfcand.isTimeValid()) { 
              time = pfcand.time(); timeResolution = pfcand.timeError();
          }
      if(pfcand.gsfTrackRef().isNull())
      {
          if(pfcand.trackRef().isNull())
              return std::pair<int,PrimaryVertexAssignment::Quality>(-1,PrimaryVertexAssignment::Unassigned);
          else 
              return chargedHadronVertex(vertices,pfcand.trackRef(),time,timeResolution,jets,builder);
      }
      return chargedHadronVertex(vertices,reco::TrackRef(),&(*pfcand.gsfTrackRef()),time,timeResolution,jets,builder);
  }

std::pair<int,PrimaryVertexAssignment::Quality> PrimaryVertexAssignment::chargedHadronVertex ( const reco::VertexCollection &  vertices, const reco::RecoChargedRefCandidate &  chcand, const edm::ValueMap< float > *  trackTimeTag, const edm::ValueMap< float > *  trackTimeResoTag, const edm::View< reco::Candidate > &  jets, const TransientTrackBuilder &  builder  ) const

inline

Definition at line 75 of file PrimaryVertexAssignment.h.

References chargedHadronVertex(), edm::Ref< C, T, F >::isNull(), fwrapper::jets, protons_cff::time, muonGEMDigis_cfi::timeResolution, reco::RecoChargedRefCandidate::track(), Unassigned, and useTiming_.

                                                                               {
      float time = 0, timeResolution = -1;
      if (useTiming_) {
        time = (*trackTimeTag)[chcand.track()];
        timeResolution = (*trackTimeResoTag)[chcand.track()]; 
      }
      if(chcand.track().isNull())
         return std::pair<int,PrimaryVertexAssignment::Quality>(-1,PrimaryVertexAssignment::Unassigned);
      return chargedHadronVertex(vertices,chcand.track(),time,timeResolution,jets,builder);
  }

Member Data Documentation

double PrimaryVertexAssignment::maxDistanceToJetAxis_

private

Definition at line 99 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

double PrimaryVertexAssignment::maxDtSigForPrimaryAssignment_

private

Definition at line 96 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

double PrimaryVertexAssignment::maxDxyForJetAxisAssigment_

private

Definition at line 101 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

double PrimaryVertexAssignment::maxDxyForNotReconstructedPrimary_

private

Definition at line 103 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

double PrimaryVertexAssignment::maxDxySigForNotReconstructedPrimary_

private

Definition at line 102 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

double PrimaryVertexAssignment::maxDzErrorForPrimaryAssignment_

private

Definition at line 95 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

double PrimaryVertexAssignment::maxDzForJetAxisAssigment_

private

Definition at line 100 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

double PrimaryVertexAssignment::maxDzForPrimaryAssignment_

private

Definition at line 94 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

double PrimaryVertexAssignment::maxDzSigForPrimaryAssignment_

private

Definition at line 93 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

double PrimaryVertexAssignment::maxJetDeltaR_

private

Definition at line 97 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

double PrimaryVertexAssignment::minJetPt_

private

Definition at line 98 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

bool PrimaryVertexAssignment::preferHighRanked_

private

Definition at line 105 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().

bool PrimaryVertexAssignment::useTiming_

private

Definition at line 104 of file PrimaryVertexAssignment.h.

Referenced by chargedHadronVertex().