---

EgammaPhotonTkIsolationProducer.cc

Go to the documentation of this file.

//*****************************************************************************
// File:      EgammaPhotonTkIsolationProducer.cc
// ----------------------------------------------------------------------------
// OrigAuth:  Matthias Mozer
// Institute: IIHE-VUB
//=============================================================================
//*****************************************************************************


#include "EgammaAnalysis/EgammaIsolationProducers/interface/EgammaPhotonTkIsolationProducer.h"

// Framework
#include "DataFormats/Common/interface/Handle.h"

#include "DataFormats/Candidate/interface/Candidate.h"
#include "DataFormats/Candidate/interface/CandAssociation.h"
#include "DataFormats/TrackReco/interface/TrackFwd.h"
#include "DataFormats/RecoCandidate/interface/RecoCandidate.h"
#include "DataFormats/EgammaReco/interface/SuperCluster.h"
#include "DataFormats/EgammaReco/interface/SuperClusterFwd.h"

#include "RecoEgamma/EgammaIsolationAlgos/interface/PhotonTkIsolation.h"


EgammaPhotonTkIsolationProducer::EgammaPhotonTkIsolationProducer(const edm::ParameterSet& config) : conf_(config)
{
 // use configuration file to setup input/output collection names
  photonProducer_               = conf_.getParameter<edm::InputTag>("photonProducer");
  
  trackProducer_           = conf_.getParameter<edm::InputTag>("trackProducer");

  ptMin_                = conf_.getParameter<double>("ptMin");
  intRadius_            = conf_.getParameter<double>("intRadius");
  extRadius_            = conf_.getParameter<double>("extRadius");
  maxVtxDist_           = conf_.getParameter<double>("maxVtxDist");
  absolut_              = conf_.getParameter<bool>("absolut");

  //register your products
  produces < reco::CandViewDoubleAssociations >();
}


EgammaPhotonTkIsolationProducer::~EgammaPhotonTkIsolationProducer(){}


//
// member functions
//

// ------------ method called to produce the data  ------------
void
EgammaPhotonTkIsolationProducer::produce(edm::Event& iEvent, const edm::EventSetup& iSetup)
{
  
  // Get the  filtered objects
  edm::Handle< edm::View<reco::Candidate> > photonHandle;
  iEvent.getByLabel(photonProducer_,photonHandle);
  
  //get the tracks
  edm::Handle<reco::TrackCollection> tracks;
  iEvent.getByLabel(trackProducer_,tracks);
  const reco::TrackCollection* trackCollection = tracks.product();

  reco::CandViewDoubleAssociations* isoMap = new reco::CandViewDoubleAssociations( reco::CandidateBaseRefProd( photonHandle ) );

  PhotonTkIsolation myTkIsolation (extRadius_,intRadius_,ptMin_,maxVtxDist_,trackCollection) ;

  for(unsigned int i = 0 ; i < photonHandle->size(); ++i ){
    double isoValue = myTkIsolation.getPtTracks(&(photonHandle->at(i)));
    if(absolut_==true){
      isoMap->setValue(i,isoValue);
    }
    else{
      reco::SuperClusterRef sc = (photonHandle->at(i)).get<reco::SuperClusterRef>();
      double et = sc.get()->energy()*sin(2*atan(exp(-sc.get()->eta())));
      isoMap->setValue(i,isoValue/et);
    }
  }
   


  std::auto_ptr<reco::CandViewDoubleAssociations> isolMap(isoMap);
  iEvent.put(isolMap);

}

---