GsfElectronAlgo::ElectronData Struct Reference

Public Member Functions
void	calculateMode (const MultiTrajectoryStateMode *mtsMode)
Candidate::LorentzVector	calculateMomentum ()
bool	calculateTSOS (const MultiTrajectoryStateTransform *, GsfConstraintAtVertex *)
void	checkCtfTrack (edm::Handle< reco::TrackCollection > currentCtfTracks)
void	computeCharge (int &charge, reco::GsfElectron::ChargeInfo &info)
	ElectronData (const reco::GsfElectronCoreRef &core, const reco::BeamSpot &bs)
CaloClusterPtr	getEleBasicCluster (const MultiTrajectoryStateTransform *)
	~ElectronData ()

Public Attributes
const reco::BeamSpot	beamSpot
TrajectoryStateOnSurface	constrainedVtxTSOS
const reco::GsfElectronCoreRef	coreRef
reco::TrackRef	ctfTrackRef
GlobalVector	eleMom
GlobalPoint	elePos
TrajectoryStateOnSurface	eleTSOS
const reco::GsfTrackRef	gsfTrackRef
GlobalVector	innMom
GlobalPoint	innPos
TrajectoryStateOnSurface	innTSOS
GlobalVector	outMom
GlobalPoint	outPos
TrajectoryStateOnSurface	outTSOS
GlobalVector	sclMom
GlobalPoint	sclPos
TrajectoryStateOnSurface	sclTSOS
GlobalVector	seedMom
GlobalPoint	seedPos
TrajectoryStateOnSurface	seedTSOS
float	shFracInnerHits
const reco::SuperClusterRef	superClusterRef
GlobalVector	vtxMom
GlobalVector	vtxMomWithConstraint
GlobalPoint	vtxPos
TrajectoryStateOnSurface	vtxTSOS

Detailed Description

Definition at line 272 of file GsfElectronAlgo.cc.

Constructor & Destructor Documentation

GsfElectronAlgo::ElectronData::ElectronData	(	const reco::GsfElectronCoreRef &	core,
		const reco::BeamSpot &	bs
	)

Definition at line 312 of file GsfElectronAlgo.cc.

 : coreRef(core),
   gsfTrackRef(coreRef->gsfTrack()),
   superClusterRef(coreRef->superCluster()),
   ctfTrackRef(coreRef->ctfTrack()), shFracInnerHits(coreRef->ctfGsfOverlap()),
   beamSpot(bs)
 {}

GsfElectronAlgo::ElectronData::~ElectronData

(

)

Definition at line 321 of file GsfElectronAlgo.cc.

 {}

Member Function Documentation

void GsfElectronAlgo::ElectronData::calculateMode

(

const MultiTrajectoryStateMode *

mtsMode

)

Definition at line 500 of file GsfElectronAlgo.cc.

References MultiTrajectoryStateMode::momentumFromModeCartesian(), and MultiTrajectoryStateMode::positionFromModeCartesian().

Referenced by GsfElectronAlgo::createElectron().

 {
  mtsMode->momentumFromModeCartesian(innTSOS,innMom) ;
  mtsMode->positionFromModeCartesian(innTSOS,innPos) ;
  mtsMode->momentumFromModeCartesian(seedTSOS,seedMom) ;
  mtsMode->positionFromModeCartesian(seedTSOS,seedPos) ;
  mtsMode->momentumFromModeCartesian(eleTSOS,eleMom) ;
  mtsMode->positionFromModeCartesian(eleTSOS,elePos) ;
  mtsMode->momentumFromModeCartesian(sclTSOS,sclMom) ;
  mtsMode->positionFromModeCartesian(sclTSOS,sclPos) ;
  mtsMode->momentumFromModeCartesian(vtxTSOS,vtxMom) ;
  mtsMode->positionFromModeCartesian(vtxTSOS,vtxPos) ;
  mtsMode->momentumFromModeCartesian(outTSOS,outMom);
  mtsMode->positionFromModeCartesian(outTSOS,outPos) ;
  mtsMode->momentumFromModeCartesian(constrainedVtxTSOS,vtxMomWithConstraint);
 }

Candidate::LorentzVector GsfElectronAlgo::ElectronData::calculateMomentum

(

)

Definition at line 517 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

 {
  double scale = superClusterRef->energy()/vtxMom.mag() ;
  return Candidate::LorentzVector
   ( vtxMom.x()*scale,vtxMom.y()*scale,vtxMom.z()*scale,
     superClusterRef->energy() ) ;
 }

bool GsfElectronAlgo::ElectronData::calculateTSOS	(	const MultiTrajectoryStateTransform *	mtsTransform,
		GsfConstraintAtVertex *	constraintAtVtx
	)

Definition at line 466 of file GsfElectronAlgo.cc.

References GsfConstraintAtVertex::constrainAtBeamSpot(), ele_convert(), MultiTrajectoryStateTransform::extrapolatedState(), MultiTrajectoryStateTransform::innerStateOnSurface(), MultiTrajectoryStateTransform::outerStateOnSurface(), and funct::true.

Referenced by GsfElectronAlgo::completeElectrons().

 {
  //at innermost point
  innTSOS = mtsTransform->innerStateOnSurface(*gsfTrackRef);
  if (!innTSOS.isValid()) return false;

  //at vertex
  // innermost state propagation to the beam spot position
  GlobalPoint bsPos ;
  ele_convert(beamSpot.position(),bsPos) ;
  vtxTSOS = mtsTransform->extrapolatedState(innTSOS,bsPos) ;
  if (!vtxTSOS.isValid()) vtxTSOS=innTSOS;

  //at seed
  outTSOS = mtsTransform->outerStateOnSurface(*gsfTrackRef);
  if (!outTSOS.isValid()) return false;

  //    TrajectoryStateOnSurface seedTSOS
  seedTSOS = mtsTransform->extrapolatedState(outTSOS,
           GlobalPoint(superClusterRef->seed()->position().x(),
               superClusterRef->seed()->position().y(),
                 superClusterRef->seed()->position().z()));
  if (!seedTSOS.isValid()) seedTSOS=outTSOS;

  // at scl
  sclTSOS = mtsTransform->extrapolatedState(innTSOS,GlobalPoint(superClusterRef->x(),superClusterRef->y(),superClusterRef->z()));
  if (!sclTSOS.isValid()) sclTSOS=outTSOS;

  // constrained momentum
  constrainedVtxTSOS = constraintAtVtx->constrainAtBeamSpot(*gsfTrackRef,beamSpot);

  return true ;
 }

void GsfElectronAlgo::ElectronData::checkCtfTrack

(

edm::Handle< reco::TrackCollection >

currentCtfTracks

)

Definition at line 324 of file GsfElectronAlgo.cc.

References abs, TrackingRecHit::all, cmsDriverOptions::counter, dPhi(), reco::HitPattern::getHitPattern(), min, pi, reco::HitPattern::pixelHitFilter(), edm::Handle< T >::product(), mathSSE::sqrt(), reco::HitPattern::stripTIBHitFilter(), and reco::HitPattern::stripTIDHitFilter().

Referenced by GsfElectronAlgo::createElectron().

 {
  if (!ctfTrackRef.isNull()) return ;

  // Code below from Puneeth Kalavase

  shFracInnerHits = 0 ;
  const TrackCollection * ctfTrackCollection = currentCtfTracks.product() ;

  // get the Hit Pattern for the gsfTrack
  const HitPattern & gsfHitPattern = gsfTrackRef->hitPattern() ;

  unsigned int counter ;
  TrackCollection::const_iterator ctfTkIter ;
  for ( ctfTkIter = ctfTrackCollection->begin() , counter = 0 ;
        ctfTkIter != ctfTrackCollection->end() ; ctfTkIter++, counter++ )
   {

    double dEta = gsfTrackRef->eta() - ctfTkIter->eta() ;
    double dPhi = gsfTrackRef->phi() - ctfTkIter->phi() ;
    double pi = acos(-1.);
    if(std::abs(dPhi) > pi) dPhi = 2*pi - std::abs(dPhi) ;

    // dont want to look at every single track in the event!
    if (sqrt(dEta*dEta + dPhi*dPhi) > 0.3) continue ;

    unsigned int shared = 0 ;
    int gsfHitCounter = 0 ;
    int numGsfInnerHits = 0 ;
    int numCtfInnerHits = 0 ;

    // get the CTF Track Hit Pattern
    const HitPattern & ctfHitPattern = ctfTkIter->hitPattern() ;

    trackingRecHit_iterator elHitsIt ;
    for ( elHitsIt = gsfTrackRef->recHitsBegin() ;
          elHitsIt != gsfTrackRef->recHitsEnd() ;
          elHitsIt++, gsfHitCounter++ )
     {
      if (!((**elHitsIt).isValid()))  //count only valid Hits
       { continue ; }

      // look only in the pixels/TIB/TID
      uint32_t gsfHit = gsfHitPattern.getHitPattern(gsfHitCounter) ;
      if (!(gsfHitPattern.pixelHitFilter(gsfHit) ||
          gsfHitPattern.stripTIBHitFilter(gsfHit) ||
          gsfHitPattern.stripTIDHitFilter(gsfHit) ) )
       { continue ; }

      numGsfInnerHits++ ;

      int ctfHitsCounter = 0 ;
      numCtfInnerHits = 0 ;
      trackingRecHit_iterator ctfHitsIt ;
      for ( ctfHitsIt = ctfTkIter->recHitsBegin() ;
            ctfHitsIt != ctfTkIter->recHitsEnd() ;
            ctfHitsIt++, ctfHitsCounter++ )
       {
        if(!((**ctfHitsIt).isValid())) //count only valid Hits!
         { continue ; }

        uint32_t ctfHit = ctfHitPattern.getHitPattern(ctfHitsCounter);
        if( !(ctfHitPattern.pixelHitFilter(ctfHit) ||
              ctfHitPattern.stripTIBHitFilter(ctfHit) ||
              ctfHitPattern.stripTIDHitFilter(ctfHit) ) )
         { continue ; }

        numCtfInnerHits++ ;

        if( (**elHitsIt).sharesInput(&(**ctfHitsIt),TrackingRecHit::all) )
         {
          shared++ ;
          break ;
         }

       } //ctfHits iterator

     } //gsfHits iterator

    if ((numGsfInnerHits==0)||(numCtfInnerHits==0))
     { continue ; }

    if ( static_cast<float>(shared)/min(numGsfInnerHits,numCtfInnerHits) > shFracInnerHits )
     {
      shFracInnerHits = static_cast<float>(shared)/min(numGsfInnerHits, numCtfInnerHits);
      ctfTrackRef = TrackRef(currentCtfTracks,counter);
     }
   } //ctfTrack iterator
 }

void GsfElectronAlgo::ElectronData::computeCharge	(	int &	charge,
		reco::GsfElectron::ChargeInfo &	info
	)

Definition at line 415 of file GsfElectronAlgo.cc.

References ele_convert(), reco::GsfElectron::ChargeInfo::isGsfCtfConsistent, reco::GsfElectron::ChargeInfo::isGsfCtfScPixConsistent, reco::GsfElectron::ChargeInfo::isGsfScPixConsistent, normalized_phi(), PV3DBase< T, PVType, FrameType >::phi(), and reco::GsfElectron::ChargeInfo::scPixCharge.

Referenced by GsfElectronAlgo::createElectron().

 {
  // determine charge from SC
  GlobalPoint orig, scpos ;
  ele_convert(beamSpot.position(),orig) ;
  ele_convert(superClusterRef->position(),scpos) ;
  GlobalVector scvect(scpos-orig) ;
  GlobalPoint inntkpos = innTSOS.globalPosition() ;
  GlobalVector inntkvect = GlobalVector(inntkpos-orig) ;
  float dPhiInnEle=normalized_phi(scvect.phi()-inntkvect.phi()) ;
  if(dPhiInnEle>0) info.scPixCharge = -1 ;
  else info.scPixCharge = 1 ;

  // flags
  int chargeGsf = gsfTrackRef->charge() ;
  info.isGsfScPixConsistent = ((chargeGsf*info.scPixCharge)>0) ;
  info.isGsfCtfConsistent = (ctfTrackRef.isNonnull()&&((chargeGsf*ctfTrackRef->charge())>0)) ;
  info.isGsfCtfScPixConsistent = (info.isGsfScPixConsistent&&info.isGsfCtfConsistent) ;

  // default charge
  if (info.isGsfScPixConsistent||ctfTrackRef.isNull())
   { charge = info.scPixCharge ; }
  else
   { charge = ctfTrackRef->charge() ; }
 }

CaloClusterPtr GsfElectronAlgo::ElectronData::getEleBasicCluster

(

const MultiTrajectoryStateTransform *

mtsTransform

)

Definition at line 442 of file GsfElectronAlgo.cc.

References abs, dPhi(), MultiTrajectoryStateTransform::extrapolatedState(), and MultiTrajectoryStateTransform::outerStateOnSurface().

Referenced by GsfElectronAlgo::createElectron().

 {
  CaloClusterPtr eleRef ;
  TrajectoryStateOnSurface tempTSOS ;
  TrajectoryStateOnSurface outTSOS = mtsTransform->outerStateOnSurface(*gsfTrackRef) ;
  float dphimin = 1.e30 ;
  for (CaloCluster_iterator bc=superClusterRef->clustersBegin(); bc!=superClusterRef->clustersEnd(); bc++)
   {
    GlobalPoint posclu((*bc)->position().x(),(*bc)->position().y(),(*bc)->position().z()) ;
    tempTSOS = mtsTransform->extrapolatedState(outTSOS,posclu) ;
    if (!tempTSOS.isValid()) tempTSOS=outTSOS ;
    GlobalPoint extrap = tempTSOS.globalPosition() ;
    float dphi = EleRelPointPair(posclu,extrap,beamSpot.position()).dPhi() ;
    if (std::abs(dphi)<dphimin)
     {
      dphimin = std::abs(dphi) ;
      eleRef = (*bc);
      eleTSOS = tempTSOS ;
     }
   }
  return eleRef ;
 }

Member Data Documentation

const reco::BeamSpot GsfElectronAlgo::ElectronData::beamSpot

Definition at line 280 of file GsfElectronAlgo.cc.

TrajectoryStateOnSurface GsfElectronAlgo::ElectronData::constrainedVtxTSOS

Definition at line 303 of file GsfElectronAlgo.cc.

const reco::GsfElectronCoreRef GsfElectronAlgo::ElectronData::coreRef

Definition at line 275 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

reco::TrackRef GsfElectronAlgo::ElectronData::ctfTrackRef

Definition at line 278 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

GlobalVector GsfElectronAlgo::ElectronData::eleMom

Definition at line 306 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

GlobalPoint GsfElectronAlgo::ElectronData::elePos

Definition at line 307 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

TrajectoryStateOnSurface GsfElectronAlgo::ElectronData::eleTSOS

Definition at line 302 of file GsfElectronAlgo.cc.

const reco::GsfTrackRef GsfElectronAlgo::ElectronData::gsfTrackRef

Definition at line 276 of file GsfElectronAlgo.cc.

GlobalVector GsfElectronAlgo::ElectronData::innMom

Definition at line 306 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

GlobalPoint GsfElectronAlgo::ElectronData::innPos

Definition at line 307 of file GsfElectronAlgo.cc.

TrajectoryStateOnSurface GsfElectronAlgo::ElectronData::innTSOS

Definition at line 297 of file GsfElectronAlgo.cc.

GlobalVector GsfElectronAlgo::ElectronData::outMom

Definition at line 306 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

GlobalPoint GsfElectronAlgo::ElectronData::outPos

Definition at line 307 of file GsfElectronAlgo.cc.

TrajectoryStateOnSurface GsfElectronAlgo::ElectronData::outTSOS

Definition at line 298 of file GsfElectronAlgo.cc.

GlobalVector GsfElectronAlgo::ElectronData::sclMom

Definition at line 306 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

GlobalPoint GsfElectronAlgo::ElectronData::sclPos

Definition at line 307 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

TrajectoryStateOnSurface GsfElectronAlgo::ElectronData::sclTSOS

Definition at line 300 of file GsfElectronAlgo.cc.

GlobalVector GsfElectronAlgo::ElectronData::seedMom

Definition at line 306 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

GlobalPoint GsfElectronAlgo::ElectronData::seedPos

Definition at line 307 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

TrajectoryStateOnSurface GsfElectronAlgo::ElectronData::seedTSOS

Definition at line 301 of file GsfElectronAlgo.cc.

float GsfElectronAlgo::ElectronData::shFracInnerHits

Definition at line 279 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

const reco::SuperClusterRef GsfElectronAlgo::ElectronData::superClusterRef

Definition at line 277 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

GlobalVector GsfElectronAlgo::ElectronData::vtxMom

Definition at line 306 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

GlobalVector GsfElectronAlgo::ElectronData::vtxMomWithConstraint

Definition at line 308 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

GlobalPoint GsfElectronAlgo::ElectronData::vtxPos

Definition at line 307 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().

TrajectoryStateOnSurface GsfElectronAlgo::ElectronData::vtxTSOS

Definition at line 299 of file GsfElectronAlgo.cc.

Referenced by GsfElectronAlgo::createElectron().