EgammaHLTEcalIsolation Class Reference

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

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

Private Attributes
int	algoType_
double	conesize
double	etMin

Detailed Description

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

Definition at line 26 of file EgammaHLTEcalIsolation.h.

Constructor & Destructor Documentation

EgammaHLTEcalIsolation::EgammaHLTEcalIsolation ( double  egEcalIso_EtMin, double  egEcalIso_ConeSize, int  SC_algo_type  )

inline

Definition at line 32 of file EgammaHLTEcalIsolation.h.

References isolPtSum().

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

    }

Member Function Documentation

float EgammaHLTEcalIsolation::getConeSize ( ) const

inline

Get isolation cone size.

Definition at line 50 of file EgammaHLTEcalIsolation.h.

References conesize.

{ return conesize; }

float EgammaHLTEcalIsolation::getetMin ( ) const

inline

Get Et cut for ecal hits.

Definition at line 48 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
	)		const

Definition at line 22 of file EgammaHLTEcalIsolation.cc.

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

Referenced by EgammaHLTEcalIsolation(), and 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=nullptr;
  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= nullptr;

  //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(); //chi2 for SC was useless and it is removed in 31x
    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::CaloCluster_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;

}

Member Data Documentation

int EgammaHLTEcalIsolation::algoType_

private

Definition at line 60 of file EgammaHLTEcalIsolation.h.

Referenced by isolPtSum().

double EgammaHLTEcalIsolation::conesize

private

Definition at line 59 of file EgammaHLTEcalIsolation.h.

Referenced by getConeSize(), and isolPtSum().

double EgammaHLTEcalIsolation::etMin

private

Definition at line 58 of file EgammaHLTEcalIsolation.h.

Referenced by getetMin(), and isolPtSum().