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EgammaHLTEcalIsolation Class Reference

Description: sum Et of all island basic clusters in cone around candidate. More...

#include <RecoEgamma/EgammaHLTAlgos/interface/EgammaHLTEcalIsolation.h>

List of all members.

Public Member Functions
	EgammaHLTEcalIsolation (double egEcalIso_EtMin, double egEcalIso_ConeSize, int SC_algo_type)
float	getConeSize ()
	Get isolation cone size.
float	getetMin ()
	Get Et cut for ecal hits.
float	isolPtSum (const reco::RecoCandidate *recocandidate, const std::vector< const reco::SuperCluster * > sclusters, const std::vector< const reco::BasicCluster * > bclusters)
Private Attributes
int	algoType_
double	conesize
double	etMin

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Detailed Description

Description: sum Et of all island basic clusters in cone around candidate.

Definition at line 27 of file EgammaHLTEcalIsolation.h.

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Constructor & Destructor Documentation

EgammaHLTEcalIsolation::EgammaHLTEcalIsolation	(	double	egEcalIso_EtMin,
		double	egEcalIso_ConeSize,
		int	SC_algo_type
	)			[inline]

Definition at line 33 of file EgammaHLTEcalIsolation.h.

                                                                                              : 
    etMin(egEcalIso_EtMin), conesize(egEcalIso_ConeSize), algoType_(SC_algo_type) {
      /*
      std::cout << "EgammaHLTEcalIsolation instance:"
      << " ptMin=" << etMin
      << " conesize=" << conesize
      << std::endl;
      */

    }

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Member Function Documentation

float EgammaHLTEcalIsolation::getConeSize

(

)

[inline]

Get isolation cone size.

Definition at line 51 of file EgammaHLTEcalIsolation.h.

References conesize.

{ return conesize; }

float EgammaHLTEcalIsolation::getetMin

(

)

[inline]

Get Et cut for ecal hits.

Definition at line 49 of file EgammaHLTEcalIsolation.h.

References etMin.

{ return etMin; }

float EgammaHLTEcalIsolation::isolPtSum	(	const reco::RecoCandidate *	recocandidate,
		const std::vector< const reco::SuperCluster * >	sclusters,
		const std::vector< const reco::BasicCluster * >	bclusters
	)

Definition at line 23 of file EgammaHLTEcalIsolation.cc.

References reco::BasicCluster::algo(), algoType_, reco::BasicCluster::chi2(), reco::SuperCluster::clustersBegin(), reco::SuperCluster::clustersEnd(), conesize, reco::CaloCluster::energy(), reco::CaloCluster::eta(), etMin, funct::exp(), reco::CaloCluster::phi(), PI, reco::SuperCluster::seed(), funct::sin(), funct::sqrt(), reco::RecoCandidate::superCluster(), and TWOPI.

Referenced by EgammaHLTEcalIsolationProducersRegional::produce().

                                                                                           {

  float ecalIsol=0.;
  
  float candSCphi = recocandidate->superCluster()->phi();
  float candSCeta = recocandidate->superCluster()->eta();

  
  // match the photon hybrid supercluster with those with Algo==0 (island)
  float delta1=1000.;
  float deltacur=1000.;
  const reco::SuperCluster *matchedsupercluster=0;
  bool MATCHEDSC = false;



  for(std::vector<const reco::SuperCluster*>::const_iterator scItr = sclusters.begin(); scItr != sclusters.end(); ++scItr){
    
    
    const reco::SuperCluster *supercluster = *scItr;
    
    float SCphi = supercluster->phi();
    float SCeta = supercluster->eta();
   
    if(supercluster->seed()->algo() == algoType_){
      float deltaphi;
      if(candSCphi<0) candSCphi+=TWOPI;
      if(SCphi<0) SCphi+=TWOPI;
      deltaphi=fabs(candSCphi-SCphi);
      if(deltaphi>TWOPI) deltaphi-=TWOPI;
      if(deltaphi>PI) deltaphi=TWOPI-deltaphi;
      float deltaeta=fabs(SCeta-candSCeta);
      deltacur = sqrt(deltaphi*deltaphi+ deltaeta*deltaeta);
      
      if (deltacur < delta1) {
        delta1=deltacur;
        matchedsupercluster = supercluster;
        MATCHEDSC = true;
      }
    }
  }

  const reco::BasicCluster *cluster= 0;

  //loop over basic clusters
  for(std::vector<const reco::BasicCluster*>::const_iterator cItr = bclusters.begin(); cItr != bclusters.end(); ++cItr){
 
    cluster = *cItr;
    float ebc_bcchi2 = cluster->chi2();
    int   ebc_bcalgo = cluster->algo();
    float ebc_bce    = cluster->energy();
    float ebc_bceta  = cluster->eta();
    float ebc_bcphi  = cluster->phi();
    float ebc_bcet   = ebc_bce*sin(2*atan(exp(ebc_bceta)));
    float newDelta;


    if (ebc_bcet > etMin && ebc_bcalgo == algoType_ ) {
      if (ebc_bcchi2 < 30.) {
        
        if(MATCHEDSC){
          bool inSuperCluster = false;

          reco::basicCluster_iterator theEclust = matchedsupercluster->clustersBegin();
          // loop over the basic clusters of the matched supercluster
          for(;theEclust != matchedsupercluster->clustersEnd();
              theEclust++) {
            if (&(**theEclust) ==  cluster) inSuperCluster = true;
          }
          if (!inSuperCluster) {
            float deltaphi;
            if(ebc_bcphi<0) ebc_bcphi+=TWOPI;
            if(candSCphi<0) candSCphi+=TWOPI;
            deltaphi=fabs(ebc_bcphi-candSCphi);
            if(deltaphi>TWOPI) deltaphi-=TWOPI;
            if(deltaphi>PI) deltaphi=TWOPI-deltaphi;
            float deltaeta=fabs(ebc_bceta-candSCeta);
            newDelta= sqrt(deltaphi*deltaphi+ deltaeta*deltaeta);
            if(newDelta < conesize) {
              ecalIsol+=ebc_bcet;
            }
          }
        }
      } // matches ebc_bcchi2
    } // matches ebc_bcet && ebc_bcalgo

  }


 return ecalIsol;

}

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Member Data Documentation

int EgammaHLTEcalIsolation::algoType_ [private]

Definition at line 61 of file EgammaHLTEcalIsolation.h.

Referenced by isolPtSum().

double EgammaHLTEcalIsolation::conesize [private]

Definition at line 60 of file EgammaHLTEcalIsolation.h.

Referenced by getConeSize(), and isolPtSum().

double EgammaHLTEcalIsolation::etMin [private]

Definition at line 59 of file EgammaHLTEcalIsolation.h.

Referenced by getetMin(), and isolPtSum().

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The documentation for this class was generated from the following files:

• RecoEgamma/EgammaHLTAlgos/interface/EgammaHLTEcalIsolation.h
• RecoEgamma/EgammaHLTAlgos/src/EgammaHLTEcalIsolation.cc

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