EgammaObjects.cc

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#include "Validation/RecoEgamma/plugins/EgammaObjects.h"

#include "FWCore/Utilities/interface/Exception.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/EgammaReco/interface/BasicCluster.h"
#include "DataFormats/EgammaReco/interface/SuperCluster.h"
#include "DataFormats/EgammaReco/interface/ClusterShape.h"
#include "DataFormats/EgammaCandidates/interface/Photon.h"
#include "DataFormats/EgammaCandidates/interface/PhotonFwd.h"
#include "DataFormats/EgammaCandidates/interface/GsfElectron.h"
#include "DataFormats/EgammaCandidates/interface/GsfElectronFwd.h"

#include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"

#include "TF1.h"

EgammaObjects::EgammaObjects( const edm::ParameterSet& ps )
{
  particleID = ps.getParameter<int>("particleID");
  EtCut = ps.getParameter<int>("EtCut");

  if( particleID == 22 ) particleString = "Photon";
  else if( particleID == 11 ) particleString = "Electron";
  else
    throw(std::runtime_error("\n\nEgammaObjects: Only 11 = Photon and 22 = Electron are acceptable parictleIDs! Exiting...\n\n"));

  loadCMSSWObjects(ps);
  loadHistoParameters(ps);

  rootFile_ = TFile::Open(ps.getParameter<std::string>("outputFile").c_str(),"RECREATE");

  hist_EtaEfficiency_ = 0 ;
  hist_EtaNumRecoOverNumTrue_ = 0 ;
  hist_deltaEtaVsEt_ = 0 ;
  hist_deltaEtaVsE_ = 0 ;
  hist_deltaEtaVsEta_ = 0 ;
  hist_deltaEtaVsPhi_ = 0 ;
  hist_resolutionEtaVsEt_ = 0 ;
  hist_resolutionEtaVsE_ = 0 ;
  hist_resolutionEtaVsEta_ = 0 ;
  hist_resolutionEtaVsPhi_ = 0 ;

  hist_Phi_ = 0 ;
  hist_PhiOverTruth_ = 0 ;
  hist_PhiEfficiency_ = 0 ;
  hist_PhiNumRecoOverNumTrue_ = 0 ;
  hist_deltaPhiVsEt_ = 0 ;
  hist_deltaPhiVsE_ = 0 ;
  hist_deltaPhiVsEta_ = 0 ;
  hist_deltaPhiVsPhi_ = 0 ;
  hist_resolutionPhiVsEt_ = 0 ;
  hist_resolutionPhiVsE_ = 0 ;
  hist_resolutionPhiVsEta_ = 0 ;
  hist_resolutionPhiVsPhi_ = 0 ;

  hist_All_recoMass_ = 0 ;
  hist_BarrelOnly_recoMass_ = 0 ;
  hist_EndcapOnly_recoMass_ = 0 ;
  hist_Mixed_recoMass_ = 0 ;

  hist_recoMass_withBackgroud_NoEtCut_ = 0 ;
  hist_recoMass_withBackgroud_5EtCut_ = 0 ;
  hist_recoMass_withBackgroud_10EtCut_ = 0 ;
  hist_recoMass_withBackgroud_20EtCut_ = 0 ;

  _TEMP_scatterPlot_EtOverTruthVsEt_ = 0 ;
  _TEMP_scatterPlot_EtOverTruthVsE_ = 0 ;
  _TEMP_scatterPlot_EtOverTruthVsEta_ = 0 ;
  _TEMP_scatterPlot_EtOverTruthVsPhi_ = 0 ;

  _TEMP_scatterPlot_EOverTruthVsEt_ = 0 ;
  _TEMP_scatterPlot_EOverTruthVsE_ = 0 ;
  _TEMP_scatterPlot_EOverTruthVsEta_ = 0 ;
  _TEMP_scatterPlot_EOverTruthVsPhi_ = 0 ;

  _TEMP_scatterPlot_deltaEtaVsEt_ = 0 ;
  _TEMP_scatterPlot_deltaEtaVsE_ = 0 ;
  _TEMP_scatterPlot_deltaEtaVsEta_ = 0 ;
  _TEMP_scatterPlot_deltaEtaVsPhi_ = 0 ;

  _TEMP_scatterPlot_deltaPhiVsEt_ = 0 ;
  _TEMP_scatterPlot_deltaPhiVsE_ = 0 ;
  _TEMP_scatterPlot_deltaPhiVsEta_ = 0 ;
  _TEMP_scatterPlot_deltaPhiVsPhi_ = 0 ;

}

void EgammaObjects::loadCMSSWObjects(const edm::ParameterSet& ps)
{
  MCTruthCollectionT_ = consumes<edm::HepMCProduct>(
      ps.getParameter<edm::InputTag>("MCTruthCollection"));
  RecoCollectionT_    = consumes<reco::GsfElectronCollection>(
      ps.getParameter<edm::InputTag>("RecoCollection"));
}

void EgammaObjects::loadHistoParameters(const edm::ParameterSet& ps)
{
  hist_min_Et_  = ps.getParameter<double>("hist_min_Et");
  hist_max_Et_  = ps.getParameter<double>("hist_max_Et");
  hist_bins_Et_ = ps.getParameter<int>   ("hist_bins_Et");

  hist_min_E_  = ps.getParameter<double>("hist_min_E");
  hist_max_E_  = ps.getParameter<double>("hist_max_E");
  hist_bins_E_ = ps.getParameter<int>   ("hist_bins_E");

  hist_min_Eta_  = ps.getParameter<double>("hist_min_Eta");
  hist_max_Eta_  = ps.getParameter<double>("hist_max_Eta");
  hist_bins_Eta_ = ps.getParameter<int>   ("hist_bins_Eta");

  hist_min_Phi_  = ps.getParameter<double>("hist_min_Phi");
  hist_max_Phi_  = ps.getParameter<double>("hist_max_Phi");
  hist_bins_Phi_ = ps.getParameter<int>   ("hist_bins_Phi");

  hist_min_EtOverTruth_  = ps.getParameter<double>("hist_min_EtOverTruth");
  hist_max_EtOverTruth_  = ps.getParameter<double>("hist_max_EtOverTruth");
  hist_bins_EtOverTruth_ = ps.getParameter<int>   ("hist_bins_EtOverTruth");

  hist_min_EOverTruth_  = ps.getParameter<double>("hist_min_EOverTruth");
  hist_max_EOverTruth_  = ps.getParameter<double>("hist_max_EOverTruth");
  hist_bins_EOverTruth_ = ps.getParameter<int>   ("hist_bins_EOverTruth");

  hist_min_EtaOverTruth_  = ps.getParameter<double>("hist_min_EtaOverTruth");
  hist_max_EtaOverTruth_  = ps.getParameter<double>("hist_max_EtaOverTruth");
  hist_bins_EtaOverTruth_ = ps.getParameter<int>   ("hist_bins_EtaOverTruth");

  hist_min_PhiOverTruth_  = ps.getParameter<double>("hist_min_PhiOverTruth");
  hist_max_PhiOverTruth_  = ps.getParameter<double>("hist_max_PhiOverTruth");
  hist_bins_PhiOverTruth_ = ps.getParameter<int>   ("hist_bins_PhiOverTruth");

  hist_min_deltaEta_  = ps.getParameter<double>("hist_min_deltaEta");
  hist_max_deltaEta_  = ps.getParameter<double>("hist_max_deltaEta");
  hist_bins_deltaEta_ = ps.getParameter<int>   ("hist_bins_deltaEta");

  hist_min_deltaPhi_  = ps.getParameter<double>("hist_min_deltaPhi");
  hist_max_deltaPhi_  = ps.getParameter<double>("hist_max_deltaPhi");
  hist_bins_deltaPhi_ = ps.getParameter<int>   ("hist_bins_deltaPhi");

  hist_min_recoMass_ = ps.getParameter<double>("hist_min_recoMass");
  hist_max_recoMass_ = ps.getParameter<double>("hist_max_recoMass");
  hist_bins_recoMass_ = ps.getParameter<int>   ("hist_bins_recoMass");
}

EgammaObjects::~EgammaObjects()
{
  delete rootFile_;
}

void EgammaObjects::beginJob()
{
  TH1::SetDefaultSumw2(true);

  createBookedHistoObjects();
  createTempHistoObjects();
}

void EgammaObjects::createBookedHistoObjects()
{
  hist_Et_
    = new TH1D("hist_Et_",("Et Distribution of "+particleString).c_str(),
      hist_bins_Et_,hist_min_Et_,hist_max_Et_);
  hist_EtOverTruth_
    = new TH1D("hist_EtOverTruth_",("Reco Et over True Et of "+particleString).c_str(),
      hist_bins_EtOverTruth_,hist_min_EtOverTruth_,hist_max_EtOverTruth_);
  hist_EtEfficiency_
    = new TH1D("hist_EtEfficiency_",("# of True "+particleString+" Reconstructed over # of True "+particleString+" VS Et of "+particleString).c_str(),
      hist_bins_Et_,hist_min_Et_,hist_max_Et_);
  hist_EtNumRecoOverNumTrue_
    = new TH1D("hist_EtNumRecoOverNumTrue_",("# of Reco "+particleString+" over # of True "+particleString+" VS Et of "+particleString).c_str(),
      hist_bins_Et_,hist_min_Et_,hist_max_Et_);

  hist_E_
    = new TH1D("hist_E_",("E Distribution of "+particleString).c_str(),
      hist_bins_E_,hist_min_E_,hist_max_E_);
  hist_EOverTruth_
    = new TH1D("hist_EOverTruth_",("Reco E over True E of "+particleString).c_str(),
      hist_bins_EOverTruth_,hist_min_EOverTruth_,hist_max_EOverTruth_);
  hist_EEfficiency_
    = new TH1D("hist_EEfficiency_",("# of True "+particleString+" Reconstructed over # of True "+particleString+" VS E of "+particleString).c_str(),
      hist_bins_E_,hist_min_E_,hist_max_E_);
  hist_ENumRecoOverNumTrue_
    = new TH1D("hist_ENumRecoOverNumTrue_",("# of Reco "+particleString+" over # of True "+particleString+" VS E of "+particleString).c_str(),
      hist_bins_E_,hist_min_E_,hist_max_E_);

  hist_Eta_
    = new TH1D("hist_Eta_",("Eta Distribution of "+particleString).c_str(),
      hist_bins_Eta_,hist_min_Eta_,hist_max_Eta_);
  hist_EtaOverTruth_
    = new TH1D("hist_EtaOverTruth_",("Reco Eta over True Eta of "+particleString).c_str(),
      hist_bins_EtaOverTruth_,hist_min_EtaOverTruth_,hist_max_EtaOverTruth_);
  hist_EtaEfficiency_
    = new TH1D("hist_EtaEfficiency_",("# of True "+particleString+" Reconstructed over # of True "+particleString+" VS Eta of "+particleString).c_str(),
      hist_bins_Eta_,hist_min_Eta_,hist_max_Eta_);
  hist_EtaNumRecoOverNumTrue_
    = new TH1D("hist_EtaNumRecoOverNumTrue_",("# of Reco "+particleString+" over # of True "+particleString+" VS Eta of "+particleString).c_str(),
      hist_bins_Eta_,hist_min_Eta_,hist_max_Eta_);

  hist_Phi_
    = new TH1D("hist_Phi_",("Phi Distribution of "+particleString).c_str(),
      hist_bins_Phi_,hist_min_Phi_,hist_max_Phi_);
  hist_PhiOverTruth_
    = new TH1D("hist_PhiOverTruth_",("Reco Phi over True Phi of "+particleString).c_str(),
      hist_bins_PhiOverTruth_,hist_min_PhiOverTruth_,hist_max_PhiOverTruth_);
  hist_PhiEfficiency_
    = new TH1D("hist_PhiEfficiency_",("# of True "+particleString+" Reconstructed over # of True "+particleString+" VS Phi of "+particleString).c_str(),
      hist_bins_Phi_,hist_min_Phi_,hist_max_Phi_);
   hist_PhiNumRecoOverNumTrue_
    = new TH1D("hist_PhiNumRecoOverNumTrue_",("# of Reco "+particleString+" over # of True "+particleString+" VS Phi of "+particleString).c_str(),
      hist_bins_Phi_,hist_min_Phi_,hist_max_Phi_);

  std::string recoParticleName;

  if( particleID == 22 ) recoParticleName = "Higgs";
  else if( particleID == 11 ) recoParticleName = "Z";

  hist_All_recoMass_
    = new TH1D("hist_All_recoMass_",(recoParticleName+" Mass from "+particleString+" in All Regions").c_str(),
      hist_bins_recoMass_,hist_min_recoMass_,hist_max_recoMass_);
  hist_BarrelOnly_recoMass_
    = new TH1D("hist_BarrelOnly_recoMass_",(recoParticleName+" Mass from "+particleString+" in Barrel").c_str(),
      hist_bins_recoMass_,hist_min_recoMass_,hist_max_recoMass_);
  hist_EndcapOnly_recoMass_
    = new TH1D("hist_EndcapOnly_recoMass_",(recoParticleName+" Mass from "+particleString+" in EndCap").c_str(),
      hist_bins_recoMass_,hist_min_recoMass_,hist_max_recoMass_);
  hist_Mixed_recoMass_
    = new TH1D("hist_Mixed_recoMass_",(recoParticleName+" Mass from "+particleString+" in Split Detectors").c_str(),
      hist_bins_recoMass_,hist_min_recoMass_,hist_max_recoMass_);

  hist_recoMass_withBackgroud_NoEtCut_
    = new TH1D("hist_recoMass_withBackgroud_NoEtCut_",(recoParticleName+" Mass from "+particleString+" with Background, No Et Cut").c_str(),
      hist_bins_recoMass_,hist_min_recoMass_,hist_max_recoMass_);
  hist_recoMass_withBackgroud_5EtCut_
    = new TH1D("hist_recoMass_withBackgroud_5EtCut_",(recoParticleName+" Mass from "+particleString+" with Background, 5 Et Cut").c_str(),
      hist_bins_recoMass_,hist_min_recoMass_,hist_max_recoMass_);
  hist_recoMass_withBackgroud_10EtCut_
    = new TH1D("hist_recoMass_withBackgroud_10EtCut_",(recoParticleName+" Mass from "+particleString+" with Background, 10 Et Cut").c_str(),
      hist_bins_recoMass_,hist_min_recoMass_,hist_max_recoMass_);
  hist_recoMass_withBackgroud_20EtCut_
    = new TH1D("hist_recoMass_withBackgroud_20EtCut_",(recoParticleName+" Mass from "+particleString+" with Background, 20 Et Cut").c_str(),
      hist_bins_recoMass_,hist_min_recoMass_,hist_max_recoMass_);
}

void EgammaObjects::createTempHistoObjects()
{
  _TEMP_scatterPlot_EtOverTruthVsEt_
    = new TH2D("_TEMP_scatterPlot_EtOverTruthVsEt_","_TEMP_scatterPlot_EtOverTruthVsEt_",
      hist_bins_Et_,hist_min_Et_,hist_max_Et_,hist_bins_EtOverTruth_,hist_min_EtOverTruth_,hist_max_EtOverTruth_);
  _TEMP_scatterPlot_EtOverTruthVsE_
    = new TH2D("_TEMP_scatterPlot_EtOverTruthVsE_","_TEMP_scatterPlot_EtOverTruthVsE_",
      hist_bins_E_,hist_min_E_,hist_max_E_,hist_bins_EtOverTruth_,hist_min_EtOverTruth_,hist_max_EtOverTruth_);
  _TEMP_scatterPlot_EtOverTruthVsEta_
    = new TH2D("_TEMP_scatterPlot_EtOverTruthVsEta_","_TEMP_scatterPlot_EtOverTruthVsEta_",
      hist_bins_Eta_,hist_min_Eta_,hist_max_Eta_,hist_bins_EtOverTruth_,hist_min_EtOverTruth_,hist_max_EtOverTruth_);
  _TEMP_scatterPlot_EtOverTruthVsPhi_
    = new TH2D("_TEMP_scatterPlot_EtOverTruthVsPhi_","_TEMP_scatterPlot_EtOverTruthVsPhi_",
      hist_bins_Phi_,hist_min_Phi_,hist_max_Phi_,hist_bins_EtOverTruth_,hist_min_EtOverTruth_,hist_max_EtOverTruth_);

  _TEMP_scatterPlot_EOverTruthVsEt_
    = new TH2D("_TEMP_scatterPlot_EOverTruthVsEt_","_TEMP_scatterPlot_EOverTruthVsEt_",
      hist_bins_Et_,hist_min_Et_,hist_max_Et_,hist_bins_EOverTruth_,hist_min_EOverTruth_,hist_max_EOverTruth_);
  _TEMP_scatterPlot_EOverTruthVsE_
    = new TH2D("_TEMP_scatterPlot_EOverTruthVsE_","_TEMP_scatterPlot_EOverTruthVsE_",
      hist_bins_E_,hist_min_E_,hist_max_E_,hist_bins_EOverTruth_,hist_min_EOverTruth_,hist_max_EOverTruth_);
  _TEMP_scatterPlot_EOverTruthVsEta_
    = new TH2D("_TEMP_scatterPlot_EOverTruthVsEta_","_TEMP_scatterPlot_EOverTruthVsEta_",
      hist_bins_Eta_,hist_min_Eta_,hist_max_Eta_,hist_bins_EOverTruth_,hist_min_EOverTruth_,hist_max_EOverTruth_);
  _TEMP_scatterPlot_EOverTruthVsPhi_
    = new TH2D("_TEMP_scatterPlot_EOverTruthVsPhi_","_TEMP_scatterPlot_EOverTruthVsPhi_",
      hist_bins_Phi_,hist_min_Phi_,hist_max_Phi_,hist_bins_EOverTruth_,hist_min_EOverTruth_,hist_max_EOverTruth_);

  _TEMP_scatterPlot_deltaEtaVsEt_
    = new TH2D("_TEMP_scatterPlot_deltaEtaVsEt_","_TEMP_scatterPlot_deltaEtaVsEt_",
      hist_bins_Et_,hist_min_Et_,hist_max_Et_,hist_bins_deltaEta_,hist_min_deltaEta_,hist_max_deltaEta_);
  _TEMP_scatterPlot_deltaEtaVsE_
    = new TH2D("_TEMP_scatterPlot_deltaEtaVsE_","_TEMP_scatterPlot_deltaEtaVsE_",
      hist_bins_E_,hist_min_E_,hist_max_E_,hist_bins_deltaEta_,hist_min_deltaEta_,hist_max_deltaEta_);
  _TEMP_scatterPlot_deltaEtaVsEta_
    = new TH2D("_TEMP_scatterPlot_deltaEtaVsEta_","_TEMP_scatterPlot_deltaEtaVsEta_",
      hist_bins_Eta_,hist_min_Eta_,hist_max_Eta_,hist_bins_deltaEta_,hist_min_deltaEta_,hist_max_deltaEta_);
  _TEMP_scatterPlot_deltaEtaVsPhi_
    = new TH2D("_TEMP_scatterPlot_deltaEtaVsPhi_","_TEMP_scatterPlot_deltaEtaVsPhi_",
      hist_bins_Phi_,hist_min_Phi_,hist_max_Phi_,hist_bins_deltaEta_,hist_min_deltaEta_,hist_max_deltaEta_);

  _TEMP_scatterPlot_deltaPhiVsEt_
    = new TH2D("_TEMP_scatterPlot_deltaPhiVsEt_","_TEMP_scatterPlot_deltaPhiVsEt_",
      hist_bins_Et_,hist_min_Et_,hist_max_Et_,hist_bins_deltaPhi_,hist_min_deltaPhi_,hist_max_deltaPhi_);
  _TEMP_scatterPlot_deltaPhiVsE_
    = new TH2D("_TEMP_scatterPlot_deltaPhiVsE_","_TEMP_scatterPlot_deltaPhiVsE_",
      hist_bins_E_,hist_min_E_,hist_max_E_,hist_bins_deltaPhi_,hist_min_deltaPhi_,hist_max_deltaPhi_);
  _TEMP_scatterPlot_deltaPhiVsEta_
    = new TH2D("_TEMP_scatterPlot_deltaPhiVsEta_","_TEMP_scatterPlot_deltaPhiVsEta_",
      hist_bins_Eta_,hist_min_Eta_,hist_max_Eta_,hist_bins_deltaPhi_,hist_min_deltaPhi_,hist_max_deltaPhi_);
  _TEMP_scatterPlot_deltaPhiVsPhi_
    = new TH2D("_TEMP_scatterPlot_deltaPhiVsPhi_","_TEMP_scatterPlot_deltaPhiVsPhi_",
      hist_bins_Phi_,hist_min_Phi_,hist_max_Phi_,hist_bins_deltaPhi_,hist_min_deltaPhi_,hist_max_deltaPhi_);
}

void EgammaObjects::analyze( const edm::Event& evt, const edm::EventSetup& es )
{
  if( particleID == 22 ) analyzePhotons(evt, es);
  else if( particleID == 11 ) analyzeElectrons(evt, es);
}

void EgammaObjects::analyzePhotons( const edm::Event& evt, const edm::EventSetup& es )
{
  edm::Handle<reco::PhotonCollection> pPhotons;
  evt.getByToken(RecoCollectionT_, pPhotons);
  if (!pPhotons.isValid()) {
    Labels l;
    labelsForToken(RecoCollectionT_, l);
    edm::LogError("EgammaObjects")
        << "Error! can't get collection with label "
        << l.module;
  }

  const reco::PhotonCollection* photons = pPhotons.product();
  std::vector<reco::Photon> photonsMCMatched;

  for(reco::PhotonCollection::const_iterator aClus = photons->begin(); aClus != photons->end(); aClus++)
  {
    if(aClus->et() >= EtCut)
    {
      hist_Et_->Fill(aClus->et());
      hist_E_->Fill(aClus->energy());
      hist_Eta_->Fill(aClus->eta());
      hist_Phi_->Fill(aClus->phi());
     }
  }

  for(int firstPhoton = 0, numPhotons = photons->size(); firstPhoton < numPhotons - 1; firstPhoton++)
    for(int secondPhoton = firstPhoton + 1; secondPhoton < numPhotons; secondPhoton++)
    {
      reco::Photon pOne = (*photons)[firstPhoton];
      reco::Photon pTwo = (*photons)[secondPhoton];

      double recoMass = findRecoMass(pOne, pTwo);

      hist_recoMass_withBackgroud_NoEtCut_->Fill(recoMass);

      if(pOne.et() >= 5 && pTwo.et() >= 5)
        hist_recoMass_withBackgroud_5EtCut_->Fill(recoMass);

      if(pOne.et() >= 10 && pTwo.et() >= 10)
        hist_recoMass_withBackgroud_10EtCut_->Fill(recoMass);

      if(pOne.et() >= 20 && pTwo.et() >= 20)
        hist_recoMass_withBackgroud_20EtCut_->Fill(recoMass);
    }

  edm::Handle<edm::HepMCProduct> pMCTruth ;
  evt.getByToken(MCTruthCollectionT_, pMCTruth);
  if (!pMCTruth.isValid()) {
    Labels l;
    labelsForToken(MCTruthCollectionT_, l);
    edm::LogError("EgammaObjects")
        << "Error! can't get collection with label "
        << l.module;
  }

  const HepMC::GenEvent* genEvent = pMCTruth->GetEvent();

  for(HepMC::GenEvent::particle_const_iterator currentParticle = genEvent->particles_begin();
      currentParticle != genEvent->particles_end(); currentParticle++ )
  {
    if(abs((*currentParticle)->pdg_id())==22 && (*currentParticle)->status()==1
      && (*currentParticle)->momentum().e()/cosh(ecalEta((*currentParticle)->momentum().eta(), (*currentParticle)->production_vertex()->position().z()/10.,
      (*currentParticle)->production_vertex()->position().perp()/10.)) >= EtCut)
    {
            HepMC::FourVector vtx = (*currentParticle)->production_vertex()->position();
            double phiTrue = (*currentParticle)->momentum().phi();
            double etaTrue = ecalEta((*currentParticle)->momentum().eta(), vtx.z()/10., vtx.perp()/10.);
      double eTrue  = (*currentParticle)->momentum().e();
            double etTrue  = (*currentParticle)->momentum().e()/cosh(etaTrue);

      double etaCurrent, etaFound = -999;
      double phiCurrent, phiFound = -999;
      double etCurrent,  etFound  = -999;
      double eCurrent,   eFound  = -999;

      reco::Photon bestMatchPhoton;

      double closestParticleDistance = 999;

      for(reco::PhotonCollection::const_iterator aClus = photons->begin(); aClus != photons->end(); aClus++)
      {
        if(aClus->et() > EtCut)
        {
          etaCurrent = aClus->eta();
          phiCurrent = aClus->phi();
          etCurrent  = aClus->et();
          eCurrent  = aClus->energy();

          double deltaPhi = phiCurrent-phiTrue;
          if(deltaPhi > Geom::pi()) deltaPhi -= 2.*Geom::pi();
          if(deltaPhi < -Geom::pi()) deltaPhi += 2.*Geom::pi();
          double deltaR = std::sqrt(std::pow(etaCurrent-etaTrue,2)+std::pow(deltaPhi,2));

          if(deltaR < closestParticleDistance)
          {
            etFound  = etCurrent;
            eFound   = eCurrent;
            etaFound = etaCurrent;
            phiFound = phiCurrent;
            closestParticleDistance = deltaR;
            bestMatchPhoton = *aClus;
          }
        }
      }

      if(closestParticleDistance < 0.05 && etFound/etTrue > .5 && etFound/etTrue < 1.5)
      {
        hist_EtOverTruth_->Fill(etFound/etTrue);
        hist_EOverTruth_->Fill(eFound/eTrue);
        hist_EtaOverTruth_->Fill(etaFound/etaTrue);
        hist_PhiOverTruth_->Fill(phiFound/phiTrue);

        hist_EtEfficiency_->Fill(etTrue);
        hist_EEfficiency_->Fill(eTrue);
        hist_EtaEfficiency_->Fill(etaTrue);
        hist_PhiEfficiency_->Fill(phiTrue);

        double deltaPhi = phiFound-phiTrue;
        if(deltaPhi > Geom::pi()) deltaPhi -= 2.*Geom::pi();
        if(deltaPhi < -Geom::pi()) deltaPhi += 2.*Geom::pi();

        _TEMP_scatterPlot_EtOverTruthVsEt_->Fill(etFound,etFound/etTrue);
        _TEMP_scatterPlot_EtOverTruthVsE_->Fill(eFound,etFound/etTrue);
        _TEMP_scatterPlot_EtOverTruthVsEta_->Fill(etaFound,etFound/etTrue);
        _TEMP_scatterPlot_EtOverTruthVsPhi_->Fill(phiFound,etFound/etTrue);

        _TEMP_scatterPlot_EOverTruthVsEt_->Fill(etFound,eFound/eTrue);
        _TEMP_scatterPlot_EOverTruthVsE_->Fill(eFound,eFound/eTrue);
        _TEMP_scatterPlot_EOverTruthVsEta_->Fill(etaFound,eFound/eTrue);
        _TEMP_scatterPlot_EOverTruthVsPhi_->Fill(phiFound,eFound/eTrue);

        _TEMP_scatterPlot_deltaEtaVsEt_->Fill(etFound,etaFound-etaTrue);
        _TEMP_scatterPlot_deltaEtaVsE_->Fill(eFound,etaFound-etaTrue);
        _TEMP_scatterPlot_deltaEtaVsEta_->Fill(etaFound,etaFound-etaTrue);
        _TEMP_scatterPlot_deltaEtaVsPhi_->Fill(phiFound,etaFound-etaTrue);

        _TEMP_scatterPlot_deltaPhiVsEt_->Fill(etFound,deltaPhi);
        _TEMP_scatterPlot_deltaPhiVsE_->Fill(eFound,deltaPhi);
        _TEMP_scatterPlot_deltaPhiVsEta_->Fill(etaFound,deltaPhi);
        _TEMP_scatterPlot_deltaPhiVsPhi_->Fill(phiFound,deltaPhi);

        photonsMCMatched.push_back(bestMatchPhoton);
      }

      hist_EtNumRecoOverNumTrue_->Fill(etTrue);
      hist_ENumRecoOverNumTrue_->Fill(eTrue);
      hist_EtaNumRecoOverNumTrue_->Fill(etaTrue);
      hist_PhiNumRecoOverNumTrue_->Fill(phiTrue);
    }
  }

  if(photonsMCMatched.size() == 2)
  {
    reco::Photon pOne = photonsMCMatched[0];
    reco::Photon pTwo = photonsMCMatched[1];

    double recoMass = findRecoMass(pOne, pTwo);

    hist_All_recoMass_->Fill(recoMass);

    if(pOne.superCluster()->seed()->algo() == 1 && pTwo.superCluster()->seed()->algo() == 1)
      hist_BarrelOnly_recoMass_->Fill(recoMass);
    else if(pOne.superCluster()->seed()->algo() == 0 && pTwo.superCluster()->seed()->algo() == 0)
      hist_EndcapOnly_recoMass_->Fill(recoMass);
    else
      hist_Mixed_recoMass_->Fill(recoMass);
  }
}

void EgammaObjects::analyzeElectrons( const edm::Event& evt, const edm::EventSetup& es )
{
  edm::Handle<reco::GsfElectronCollection> pElectrons;
  evt.getByToken(RecoCollectionT_, pElectrons);
  if (!pElectrons.isValid()) {
    Labels l;
    labelsForToken(RecoCollectionT_, l);
    edm::LogError("DOEPlotsProducerElectrons")
        << "Error! can't get collection with label "
        << l.module;
  }

  const reco::GsfElectronCollection* electrons = pElectrons.product();
  std::vector<reco::GsfElectron> electronsMCMatched;

  for(reco::GsfElectronCollection::const_iterator aClus = electrons->begin(); aClus != electrons->end(); aClus++)
  {
    if(aClus->et() >= EtCut)
    {
      hist_Et_->Fill(aClus->et());
      hist_E_->Fill(aClus->energy());
      hist_Eta_->Fill(aClus->eta());
      hist_Phi_->Fill(aClus->phi());
     }
  }

  for(int firstElectron = 0, numElectrons = electrons->size(); firstElectron < numElectrons - 1; firstElectron++)
    for(int secondElectron = firstElectron + 1; secondElectron < numElectrons; secondElectron++)
    {
      reco::GsfElectron eOne = (*electrons)[firstElectron];
      reco::GsfElectron eTwo = (*electrons)[secondElectron];

      double recoMass = findRecoMass(eOne, eTwo);

      hist_recoMass_withBackgroud_NoEtCut_->Fill(recoMass);

      if(eOne.et() >= 5 && eTwo.et() >= 5)
        hist_recoMass_withBackgroud_5EtCut_->Fill(recoMass);

      if(eOne.et() >= 10 && eTwo.et() >= 10)
        hist_recoMass_withBackgroud_10EtCut_->Fill(recoMass);

      if(eOne.et() >= 20 && eTwo.et() >= 20)
        hist_recoMass_withBackgroud_20EtCut_->Fill(recoMass);
    }

  edm::Handle<edm::HepMCProduct> pMCTruth ;
  evt.getByToken(MCTruthCollectionT_, pMCTruth);
  if (!pMCTruth.isValid()) {
    Labels l;
    labelsForToken(MCTruthCollectionT_, l);
    edm::LogError("DOEPlotsProducerElectrons")
        << "Error! can't get collection with label "
        << l.module;
  }

  const HepMC::GenEvent* genEvent = pMCTruth->GetEvent();
  for(HepMC::GenEvent::particle_const_iterator currentParticle = genEvent->particles_begin();
      currentParticle != genEvent->particles_end(); currentParticle++ )
  {
    if(abs((*currentParticle)->pdg_id())==11 && (*currentParticle)->status()==1
      && (*currentParticle)->momentum().e()/cosh((*currentParticle)->momentum().eta()) >= EtCut)
    {
            double phiTrue = (*currentParticle)->momentum().phi();
            double etaTrue = (*currentParticle)->momentum().eta();
      double eTrue  = (*currentParticle)->momentum().e();
            double etTrue  = (*currentParticle)->momentum().e()/cosh(etaTrue);

      double etaCurrent, etaFound = -999;
      double phiCurrent, phiFound = -999;
      double etCurrent,  etFound  = -999;
      double eCurrent,   eFound  = -999;

      reco::GsfElectron bestMatchElectron;

      double closestParticleDistance = 999;

      for(reco::GsfElectronCollection::const_iterator aClus = electrons->begin(); aClus != electrons->end(); aClus++)
      {
        if(aClus->et() > EtCut)
        {
          etaCurrent = aClus->eta();
          phiCurrent = aClus->phi();
          etCurrent  = aClus->et();
          eCurrent  = aClus->energy();

          double deltaPhi = phiCurrent-phiTrue;
          if(deltaPhi > Geom::pi()) deltaPhi -= 2.*Geom::pi();
          if(deltaPhi < -Geom::pi()) deltaPhi += 2.*Geom::pi();
          double deltaR = std::sqrt(std::pow(etaCurrent-etaTrue,2)+std::pow(deltaPhi,2));

          if(deltaR < closestParticleDistance)
          {
            etFound  = etCurrent;
            eFound   = eCurrent;
            etaFound = etaCurrent;
            phiFound = phiCurrent;
            closestParticleDistance = deltaR;
            bestMatchElectron = *aClus;
          }
        }
      }

      if(closestParticleDistance < 0.05 && etFound/etTrue > .5 && etFound/etTrue < 1.5)
      {
        hist_EtOverTruth_->Fill(etFound/etTrue);
        hist_EOverTruth_->Fill(eFound/eTrue);
        hist_EtaOverTruth_->Fill(etaFound/etaTrue);
        hist_PhiOverTruth_->Fill(phiFound/phiTrue);

        hist_EtEfficiency_->Fill(etTrue);
        hist_EEfficiency_->Fill(eTrue);
        hist_EtaEfficiency_->Fill(etaTrue);
        hist_PhiEfficiency_->Fill(phiTrue);

        double deltaPhi = phiFound-phiTrue;
        if(deltaPhi > Geom::pi()) deltaPhi -= 2.*Geom::pi();
        if(deltaPhi < -Geom::pi()) deltaPhi += 2.*Geom::pi();

        _TEMP_scatterPlot_EtOverTruthVsEt_->Fill(etFound,etFound/etTrue);
        _TEMP_scatterPlot_EtOverTruthVsE_->Fill(eFound,etFound/etTrue);
        _TEMP_scatterPlot_EtOverTruthVsEta_->Fill(etaFound,etFound/etTrue);
        _TEMP_scatterPlot_EtOverTruthVsPhi_->Fill(phiFound,etFound/etTrue);

        _TEMP_scatterPlot_EOverTruthVsEt_->Fill(etFound,eFound/eTrue);
        _TEMP_scatterPlot_EOverTruthVsE_->Fill(eFound,eFound/eTrue);
        _TEMP_scatterPlot_EOverTruthVsEta_->Fill(etaFound,eFound/eTrue);
        _TEMP_scatterPlot_EOverTruthVsPhi_->Fill(phiFound,eFound/eTrue);

        _TEMP_scatterPlot_deltaEtaVsEt_->Fill(etFound,etaFound-etaTrue);
        _TEMP_scatterPlot_deltaEtaVsE_->Fill(eFound,etaFound-etaTrue);
        _TEMP_scatterPlot_deltaEtaVsEta_->Fill(etaFound,etaFound-etaTrue);
        _TEMP_scatterPlot_deltaEtaVsPhi_->Fill(phiFound,etaFound-etaTrue);

        _TEMP_scatterPlot_deltaPhiVsEt_->Fill(etFound,deltaPhi);
        _TEMP_scatterPlot_deltaPhiVsE_->Fill(eFound,deltaPhi);
        _TEMP_scatterPlot_deltaPhiVsEta_->Fill(etaFound,deltaPhi);
        _TEMP_scatterPlot_deltaPhiVsPhi_->Fill(phiFound,deltaPhi);

        electronsMCMatched.push_back(bestMatchElectron);
      }

      hist_EtNumRecoOverNumTrue_->Fill(etTrue);
      hist_ENumRecoOverNumTrue_->Fill(eTrue);
      hist_EtaNumRecoOverNumTrue_->Fill(etaTrue);
      hist_PhiNumRecoOverNumTrue_->Fill(phiTrue);
    }
  }

  if(electronsMCMatched.size() == 2)
  {
    reco::GsfElectron eOne = electronsMCMatched[0];
    reco::GsfElectron eTwo = electronsMCMatched[1];

    double recoMass = findRecoMass(eOne, eTwo);

    hist_All_recoMass_->Fill(recoMass);

    if(eOne.superCluster()->seed()->algo() == 1 && eTwo.superCluster()->seed()->algo() == 1)
      hist_BarrelOnly_recoMass_->Fill(recoMass);
    else if(eOne.superCluster()->seed()->algo() == 0 && eTwo.superCluster()->seed()->algo() == 0)
      hist_EndcapOnly_recoMass_->Fill(recoMass);
    else
      hist_Mixed_recoMass_->Fill(recoMass);
  }
}

double EgammaObjects::findRecoMass(const reco::Photon& pOne,const reco::Photon& pTwo)
{
  double cosTheta
    = (cos(pOne.superCluster()->phi() - pTwo.superCluster()->phi()) + sinh(pOne.superCluster()->eta()) * sinh(pTwo.superCluster()->eta())) /
      (cosh(pOne.superCluster()->eta()) * cosh(pTwo.superCluster()->eta()));

  double recoMass = sqrt(2 * (pOne.superCluster())->energy() * (pTwo.superCluster())->energy() * (1 - cosTheta));

  return recoMass;
}

double EgammaObjects::findRecoMass(const reco::GsfElectron& eOne, const reco::GsfElectron& eTwo)
{
  double cosTheta
    = (cos(eOne.caloPosition().phi() - eTwo.caloPosition().phi()) + sinh(eOne.caloPosition().eta()) * sinh(eTwo.caloPosition().eta())) /
      (cosh(eOne.caloPosition().eta()) * cosh(eTwo.caloPosition().eta()));

  double recoMass = sqrt(2 * eOne.caloEnergy() * eTwo.caloEnergy() * (1 - cosTheta));

  return recoMass;
}

float EgammaObjects::ecalEta(float EtaParticle , float Zvertex, float plane_Radius)
{
    const float R_ECAL           = 136.5;
    const float Z_Endcap         = 328.0;
    const float etaBarrelEndcap  = 1.479;

    if(EtaParticle != 0.)
    {
        float Theta = 0.0  ;
        float ZEcal = (R_ECAL-plane_Radius)*sinh(EtaParticle)+Zvertex;

        if(ZEcal != 0.0) Theta = atan(R_ECAL/ZEcal);
        if(Theta<0.0) Theta = Theta+Geom::pi() ;

        float ETA = - log(tan(0.5*Theta));

        if( std::abs(ETA) > etaBarrelEndcap )
        {
            float Zend = Z_Endcap ;
            if(EtaParticle<0.0 )  Zend = -Zend ;
            float Zlen = Zend - Zvertex ;
            float RR = Zlen/sinh(EtaParticle);
            Theta = atan((RR+plane_Radius)/Zend);
            if(Theta<0.0) Theta = Theta+Geom::pi() ;
            ETA = - log(tan(0.5*Theta));
        }

        return ETA;
    }
    else
    {
        edm::LogWarning("")  << "[EgammaObjects::ecalEta] Warning: Eta equals to zero, not correcting" ;
        return EtaParticle;
    }
}


void EgammaObjects::endJob()
{
  rootFile_->cd();
  rootFile_->mkdir(particleString.c_str());

  getDeltaResHistosViaSlicing();
  getEfficiencyHistosViaDividing();
  fitHistos();

  applyLabels();
  setDrawOptions();
  saveHistos();
  rootFile_->Close();
}

void EgammaObjects::getDeltaResHistosViaSlicing()
{
  _TEMP_scatterPlot_EtOverTruthVsEt_->FitSlicesY(0,1,hist_bins_Et_,10,"QRG3");
  _TEMP_scatterPlot_EtOverTruthVsE_->FitSlicesY(0,1,hist_bins_E_,10,"QRG3");
  _TEMP_scatterPlot_EtOverTruthVsEta_->FitSlicesY(0,1,hist_bins_Eta_,10,"QRG2");
  _TEMP_scatterPlot_EtOverTruthVsPhi_->FitSlicesY(0,1,hist_bins_Phi_,10,"QRG2");

  _TEMP_scatterPlot_EOverTruthVsEt_->FitSlicesY(0,1,hist_bins_Et_,10,"QRG3");
  _TEMP_scatterPlot_EOverTruthVsE_->FitSlicesY(0,1,hist_bins_E_,10,"QRG3");
  _TEMP_scatterPlot_EOverTruthVsEta_->FitSlicesY(0,1,hist_bins_Eta_,10,"QRG2");
  _TEMP_scatterPlot_EOverTruthVsPhi_->FitSlicesY(0,1,hist_bins_Phi_,10,"QRG2");

  _TEMP_scatterPlot_deltaEtaVsEt_->FitSlicesY(0,1,hist_bins_Et_,10,"QRG3");
  _TEMP_scatterPlot_deltaEtaVsE_->FitSlicesY(0,1,hist_bins_E_,10,"QRG3");
  _TEMP_scatterPlot_deltaEtaVsEta_->FitSlicesY(0,1,hist_bins_Eta_,10,"QRG2");
  _TEMP_scatterPlot_deltaEtaVsPhi_->FitSlicesY(0,1,hist_bins_Phi_,10,"QRG2");

  _TEMP_scatterPlot_deltaPhiVsEt_->FitSlicesY(0,1,hist_bins_Et_,10,"QRG3");
  _TEMP_scatterPlot_deltaPhiVsE_->FitSlicesY(0,1,hist_bins_E_,10,"QRG3");
  _TEMP_scatterPlot_deltaPhiVsEta_->FitSlicesY(0,1,hist_bins_Eta_,10,"QRG2");
  _TEMP_scatterPlot_deltaPhiVsPhi_->FitSlicesY(0,1,hist_bins_Phi_,10,"QRG2");

  hist_EtOverTruthVsEt_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EtOverTruthVsEt__1");
  hist_EtOverTruthVsE_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EtOverTruthVsE__1");
  hist_EtOverTruthVsEta_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EtOverTruthVsEta__1");
  hist_EtOverTruthVsPhi_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EtOverTruthVsPhi__1");

  hist_EOverTruthVsEt_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EOverTruthVsEt__1");
  hist_EOverTruthVsE_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EOverTruthVsE__1");
  hist_EOverTruthVsEta_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EOverTruthVsEta__1");
  hist_EOverTruthVsPhi_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EOverTruthVsPhi__1");

  hist_deltaEtaVsEt_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaEtaVsEt__1");
  hist_deltaEtaVsE_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaEtaVsE__1");
  hist_deltaEtaVsEta_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaEtaVsEta__1");
  hist_deltaEtaVsPhi_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaEtaVsPhi__1");

  hist_deltaPhiVsEt_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaPhiVsEt__1");
  hist_deltaPhiVsE_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaPhiVsE__1");
  hist_deltaPhiVsEta_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaPhiVsEta__1");
  hist_deltaPhiVsPhi_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaPhiVsPhi__1");

  hist_EtOverTruthVsEt_->SetNameTitle("hist_EtOverTruthVsEt_",("Reco Et over True Et VS Et of "+particleString).c_str());
  hist_EtOverTruthVsE_->SetNameTitle("hist_EtOverTruthVsE_",("Reco Et over True Et VS E of "+particleString).c_str());
  hist_EtOverTruthVsEta_->SetNameTitle("hist_EtOverTruthVsEta_",("Reco Et over True Et VS Eta of "+particleString).c_str());
  hist_EtOverTruthVsPhi_->SetNameTitle("hist_EtOverTruthVsPhi_",("Reco Et over True Et VS Phi of "+particleString).c_str());

  hist_EOverTruthVsEt_->SetNameTitle("hist_EOverTruthVsEt_",("Reco E over True E VS Et of "+particleString).c_str());
  hist_EOverTruthVsE_->SetNameTitle("hist_EOverTruthVsE_",("Reco E over True E VS E of "+particleString).c_str());
  hist_EOverTruthVsEta_->SetNameTitle("hist_EOverTruthVsEta_",("Reco E over True E VS Eta of "+particleString).c_str());
  hist_EOverTruthVsPhi_->SetNameTitle("hist_EOverTruthVsPhi_",("Reco E over True E VS Phi of "+particleString).c_str());

  hist_deltaEtaVsEt_->SetNameTitle("hist_deltaEtaVsEt_",("delta Eta VS Et of "+particleString).c_str());
  hist_deltaEtaVsE_->SetNameTitle("hist_deltaEtaVsE_",("delta Eta VS E of "+particleString).c_str());
  hist_deltaEtaVsEta_->SetNameTitle("hist_deltaEtaVsEta_",("delta Eta VS Eta of "+particleString).c_str());
  hist_deltaEtaVsPhi_->SetNameTitle("hist_deltaEtaVsPhi_",("delta Eta VS Phi of "+particleString).c_str());

  hist_deltaPhiVsEt_->SetNameTitle("hist_deltaPhiVsEt_",("delta Phi VS Et of "+particleString).c_str());
  hist_deltaPhiVsE_->SetNameTitle("hist_deltaPhiVsE_",("delta Phi VS E of "+particleString).c_str());
  hist_deltaPhiVsEta_->SetNameTitle("hist_deltaPhiVsEta_",("delta Phi VS Eta of "+particleString).c_str());
  hist_deltaPhiVsPhi_->SetNameTitle("hist_deltaPhiVsPhi_",("delta Phi VS Phi of "+particleString).c_str());

  hist_resolutionEtVsEt_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EtOverTruthVsEt__2");
  hist_resolutionEtVsE_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EtOverTruthVsE__2");
  hist_resolutionEtVsEta_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EtOverTruthVsEta__2");
  hist_resolutionEtVsPhi_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EtOverTruthVsPhi__2");

  hist_resolutionEVsEt_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EOverTruthVsEt__2");
  hist_resolutionEVsE_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EOverTruthVsE__2");
  hist_resolutionEVsEta_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EOverTruthVsEta__2");
  hist_resolutionEVsPhi_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_EOverTruthVsPhi__2");

  hist_resolutionEtaVsEt_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaEtaVsEt__2");
  hist_resolutionEtaVsE_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaEtaVsE__2");
  hist_resolutionEtaVsEta_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaEtaVsEta__2");
  hist_resolutionEtaVsPhi_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaEtaVsPhi__2");

  hist_resolutionPhiVsEt_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaPhiVsEt__2");
  hist_resolutionPhiVsE_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaPhiVsE__2");
  hist_resolutionPhiVsEta_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaPhiVsEta__2");
  hist_resolutionPhiVsPhi_ = (TH1D*)gDirectory->Get("_TEMP_scatterPlot_deltaPhiVsPhi__2");

  hist_resolutionEtVsEt_->SetNameTitle("hist_resolutionEtVsEt_",("#sigma of Reco Et over True Et VS Et of "+particleString).c_str());
  hist_resolutionEtVsE_->SetNameTitle("hist_resolutionEtVsE_",("#sigma of Reco Et over True Et VS E of "+particleString).c_str());
  hist_resolutionEtVsEta_->SetNameTitle("hist_resolutionEtVsEta_",("#sigma of Reco Et over True Et VS Eta of "+particleString).c_str());
  hist_resolutionEtVsPhi_->SetNameTitle("hist_resolutionEtVsPhi_",("#sigma of Reco Et over True Et VS Phi of "+particleString).c_str());

  hist_resolutionEVsEt_->SetNameTitle("hist_resolutionEVsEt_",("#sigma of Reco E over True E VS Et of "+particleString).c_str());
  hist_resolutionEVsE_->SetNameTitle("hist_resolutionEVsE_",("#sigma of Reco E over True E VS E of "+particleString).c_str());
  hist_resolutionEVsEta_->SetNameTitle("hist_resolutionEVsEta_",("#sigma of Reco E over True E VS Eta of "+particleString).c_str());
  hist_resolutionEVsPhi_->SetNameTitle("hist_resolutionEVsPhi_",("#sigma of Reco E over True E VS Phi of "+particleString).c_str());

  hist_resolutionEtaVsEt_->SetNameTitle("hist_resolutionEtaVsEt_",("#sigma of delta Eta VS Et of "+particleString).c_str());
  hist_resolutionEtaVsE_->SetNameTitle("hist_resolutionEtaVsE_",("#sigma of delta Eta VS E of "+particleString).c_str());
  hist_resolutionEtaVsEta_->SetNameTitle("hist_resolutionEtaVsEta_",("#sigma of delta Eta VS Eta of "+particleString).c_str());
  hist_resolutionEtaVsPhi_->SetNameTitle("hist_resolutionEtaVsPhi_",("#sigma of delta Eta VS Phi of "+particleString).c_str());

  hist_resolutionPhiVsEt_->SetNameTitle("hist_resolutionPhiVsEt_",("#sigma of delta Phi VS Et of "+particleString).c_str());
  hist_resolutionPhiVsE_->SetNameTitle("hist_resolutionPhiVsE_",("#sigma of delta Phi VS E of "+particleString).c_str());
  hist_resolutionPhiVsEta_->SetNameTitle("hist_resolutionPhiVsEta_",("#sigma of delta Phi VS Eta of "+particleString).c_str());
  hist_resolutionPhiVsPhi_->SetNameTitle("hist_resolutionPhiVsPhi_",("#sigma of delta Phi VS Phi of "+particleString).c_str());
}

void EgammaObjects::getEfficiencyHistosViaDividing()
{
  hist_EtEfficiency_->Divide(hist_EtEfficiency_,hist_EtNumRecoOverNumTrue_,1,1);
  hist_EEfficiency_->Divide(hist_EEfficiency_,hist_ENumRecoOverNumTrue_,1,1);
  hist_EtaEfficiency_->Divide(hist_EtaEfficiency_,hist_EtaNumRecoOverNumTrue_,1,1);
  hist_PhiEfficiency_->Divide(hist_PhiEfficiency_,hist_PhiNumRecoOverNumTrue_,1,1);

  hist_EtNumRecoOverNumTrue_->Divide(hist_Et_,hist_EtNumRecoOverNumTrue_,1,1);
  hist_ENumRecoOverNumTrue_->Divide(hist_E_,hist_ENumRecoOverNumTrue_,1,1);
  hist_EtaNumRecoOverNumTrue_->Divide(hist_Eta_,hist_EtaNumRecoOverNumTrue_,1,1);
  hist_PhiNumRecoOverNumTrue_->Divide(hist_Phi_,hist_PhiNumRecoOverNumTrue_,1,1);
}

void EgammaObjects::fitHistos()
{
  //Use our own copy for thread safety
  TF1 gaus("mygaus","gaus");
  hist_EtOverTruth_->Fit(&gaus,"QEM");
//  hist_EtNumRecoOverNumTrue_->Fit("pol1","QEM");

  hist_EOverTruth_->Fit(&gaus,"QEM");
//  hist_ENumRecoOverNumTrue_->Fit("pol1","QEM");

  hist_EtaOverTruth_->Fit(&gaus,"QEM");
//  hist_EtaNumRecoOverNumTrue_->Fit("pol1","QEM");

  hist_PhiOverTruth_->Fit(&gaus,"QEM");
//  hist_PhiNumRecoOverNumTrue_->Fit("pol1","QEM");

  /*
  hist_EtOverTruthVsEt_->Fit("pol1","QEM");
  hist_EtOverTruthVsEta_->Fit("pol1","QEM");
  hist_EtOverTruthVsPhi_->Fit("pol1","QEM");
  hist_resolutionEtVsEt_->Fit("pol1","QEM");
  hist_resolutionEtVsEta_->Fit("pol1","QEM");
  hist_resolutionEtVsPhi_->Fit("pol1","QEM");

  hist_EOverTruthVsEt_->Fit("pol1","QEM");
  hist_EOverTruthVsEta_->Fit("pol1","QEM");
  hist_EOverTruthVsPhi_->Fit("pol1","QEM");
  hist_resolutionEVsEt_->Fit("pol1","QEM");
  hist_resolutionEVsEta_->Fit("pol1","QEM");
  hist_resolutionEVsPhi_->Fit("pol1","QEM");

  hist_deltaEtaVsEt_->Fit("pol1","QEM");
  hist_deltaEtaVsEta_->Fit("pol1","QEM");
  hist_deltaEtaVsPhi_->Fit("pol1","QEM");
  hist_resolutionEtaVsEt_->Fit("pol1","QEM");
  hist_resolutionEtaVsEta_->Fit("pol1","QEM");
  hist_resolutionEtaVsPhi_->Fit("pol1","QEM");

  hist_deltaPhiVsEt_->Fit("pol1","QEM");
  hist_deltaPhiVsEta_->Fit("pol1","QEM");
  hist_deltaPhiVsPhi_->Fit("pol1","QEM");
  hist_resolutionPhiVsEt_->Fit("pol1","QEM");
  hist_resolutionPhiVsEta_->Fit("pol1","QEM");
  hist_resolutionPhiVsPhi_->Fit("pol1","QEM");
  */
}

void EgammaObjects::applyLabels()
{
  hist_Et_->GetXaxis()->SetTitle("Et (GeV)");
  hist_Et_->GetYaxis()->SetTitle("# per Et Bin");
  hist_EtOverTruth_->GetXaxis()->SetTitle("Reco Et/True Et");
  hist_EtOverTruth_->GetYaxis()->SetTitle("# per Ratio Bin");
  hist_EtEfficiency_->GetXaxis()->SetTitle("Et (GeV)");
  hist_EtEfficiency_->GetYaxis()->SetTitle("# True Reconstructed/# True per Et Bin");
  hist_EtNumRecoOverNumTrue_->GetXaxis()->SetTitle("Et (GeV)");
  hist_EtNumRecoOverNumTrue_->GetYaxis()->SetTitle("# Reco/# True per Et Bin");
  hist_EtOverTruthVsEt_->GetXaxis()->SetTitle("Et (GeV)");
  hist_EtOverTruthVsEt_->GetYaxis()->SetTitle("Reco Et/True Et per Et Bin");
  hist_EtOverTruthVsE_->GetXaxis()->SetTitle("E (GeV)");
  hist_EtOverTruthVsE_->GetYaxis()->SetTitle("Reco Et/True Et per E Bin");
  hist_EtOverTruthVsEta_->GetXaxis()->SetTitle("#eta (Radians)");
  hist_EtOverTruthVsEta_->GetYaxis()->SetTitle("Reco Et/True Et per Eta Bin");
  hist_EtOverTruthVsPhi_->GetXaxis()->SetTitle("#phi (Radians)");
  hist_EtOverTruthVsPhi_->GetYaxis()->SetTitle("Reco Et/True Et per Phi Bin");
  hist_resolutionEtVsEt_->GetXaxis()->SetTitle("Et (GeV)");
  hist_resolutionEtVsEt_->GetYaxis()->SetTitle("#sigma of Reco Et/True Et per Et Bin");
  hist_resolutionEtVsE_->GetXaxis()->SetTitle("E (GeV)");
  hist_resolutionEtVsE_->GetYaxis()->SetTitle("#sigma of Reco Et/True Et per E Bin");
  hist_resolutionEtVsEta_->GetXaxis()->SetTitle("#eta (Radians)");
  hist_resolutionEtVsEta_->GetYaxis()->SetTitle("#sigma of Reco Et/True Et per Eta Bin");
  hist_resolutionEtVsPhi_->GetXaxis()->SetTitle("#phi (Radians)");
  hist_resolutionEtVsPhi_->GetYaxis()->SetTitle("#sigma of Reco Et/True Et per Phi Bin");

  hist_E_->GetXaxis()->SetTitle("E (GeV)");
  hist_E_->GetYaxis()->SetTitle("# per E Bin");
  hist_EOverTruth_->GetXaxis()->SetTitle("Reco E/True E");
  hist_EOverTruth_->GetYaxis()->SetTitle("# per Ratio Bin");
  hist_EEfficiency_->GetXaxis()->SetTitle("E (GeV)");
  hist_EEfficiency_->GetYaxis()->SetTitle("# True Reconstructed/# True per E Bin");
  hist_ENumRecoOverNumTrue_->GetXaxis()->SetTitle("E (GeV)");
  hist_ENumRecoOverNumTrue_->GetYaxis()->SetTitle("# Reco/# True per E Bin");
  hist_EOverTruthVsEt_->GetXaxis()->SetTitle("Et (GeV)");
  hist_EOverTruthVsEt_->GetYaxis()->SetTitle("Reco E/True E per Et Bin");
  hist_EOverTruthVsE_->GetXaxis()->SetTitle("E (GeV)");
  hist_EOverTruthVsE_->GetYaxis()->SetTitle("Reco E/True E per E Bin");
  hist_EOverTruthVsEta_->GetXaxis()->SetTitle("#eta (Radians)");
  hist_EOverTruthVsEta_->GetYaxis()->SetTitle("Reco E/True E per Eta Bin");
  hist_EOverTruthVsPhi_->GetXaxis()->SetTitle("#phi (Radians)");
  hist_EOverTruthVsPhi_->GetYaxis()->SetTitle("Reco E/True E per Phi Bin");
  hist_resolutionEVsEt_->GetXaxis()->SetTitle("Et (GeV)");
  hist_resolutionEVsEt_->GetYaxis()->SetTitle("#sigma of Reco E/True E per Et Bin");
  hist_resolutionEVsE_->GetXaxis()->SetTitle("E (GeV)");
  hist_resolutionEVsE_->GetYaxis()->SetTitle("#sigma of Reco E/True E per E Bin");
  hist_resolutionEVsEta_->GetXaxis()->SetTitle("#eta (Radians)");
  hist_resolutionEVsEta_->GetYaxis()->SetTitle("#sigma of Reco E/True E per Eta Bin");
  hist_resolutionEVsPhi_->GetXaxis()->SetTitle("#phi (Radians)");
  hist_resolutionEVsPhi_->GetYaxis()->SetTitle("#sigma of Reco E/True E per Phi Bin");

  hist_Eta_->GetXaxis()->SetTitle("#eta (Radians)");
  hist_Eta_->GetYaxis()->SetTitle("# per Eta Bin");
  hist_EtaOverTruth_->GetXaxis()->SetTitle("Reco Eta/True Eta");
  hist_EtaOverTruth_->GetYaxis()->SetTitle("# per Ratio Bin");
  hist_EtaEfficiency_->GetXaxis()->SetTitle("#eta (Radians)");
  hist_EtaEfficiency_->GetYaxis()->SetTitle("# True Reconstructed/# True per Eta Bin");
  hist_EtaNumRecoOverNumTrue_->GetXaxis()->SetTitle("#eta (Radians)");
  hist_EtaNumRecoOverNumTrue_->GetYaxis()->SetTitle("# Reco/# True per Eta Bin");
  hist_deltaEtaVsEt_->GetXaxis()->SetTitle("Et (GeV)");
  hist_deltaEtaVsEt_->GetYaxis()->SetTitle("Reco Eta - True Eta per Et Bin");
  hist_deltaEtaVsE_->GetXaxis()->SetTitle("E (GeV)");
  hist_deltaEtaVsE_->GetYaxis()->SetTitle("Reco Eta - True Eta per E Bin");
  hist_deltaEtaVsEta_->GetXaxis()->SetTitle("#eta (Radians)");
  hist_deltaEtaVsEta_->GetYaxis()->SetTitle("Reco Eta - True Eta per Eta Bin");
  hist_deltaEtaVsPhi_->GetXaxis()->SetTitle("#phi (Radians)");
  hist_deltaEtaVsPhi_->GetYaxis()->SetTitle("Reco Eta - True Eta per Phi Bin");
  hist_resolutionEtaVsEt_->GetXaxis()->SetTitle("Et (GeV)");
  hist_resolutionEtaVsEt_->GetYaxis()->SetTitle("#sigma of Reco Eta - True Eta per Et Bin");
  hist_resolutionEtaVsE_->GetXaxis()->SetTitle("E (GeV)");
  hist_resolutionEtaVsE_->GetYaxis()->SetTitle("#sigma of Reco Eta - True Eta per E Bin");
  hist_resolutionEtaVsEta_->GetXaxis()->SetTitle("#eta (Radians)");
  hist_resolutionEtaVsEta_->GetYaxis()->SetTitle("#sigma of Reco Eta - True Eta per Eta Bin");
  hist_resolutionEtaVsPhi_->GetXaxis()->SetTitle("#phi (Radians)");
  hist_resolutionEtaVsPhi_->GetYaxis()->SetTitle("#sigma of Reco Eta - True Eta per Phi Bin");

  hist_Phi_->GetXaxis()->SetTitle("#phi (Radians)");
  hist_Phi_->GetYaxis()->SetTitle("# per Phi Bin");
  hist_PhiOverTruth_->GetXaxis()->SetTitle("Reco Phi/True Phi");
  hist_PhiOverTruth_->GetYaxis()->SetTitle("# per Ratio Bin");
  hist_PhiEfficiency_->GetXaxis()->SetTitle("#phi (Radians)");
  hist_PhiEfficiency_->GetYaxis()->SetTitle("# True Reconstructed/# True per Phi Bin");
  hist_PhiNumRecoOverNumTrue_->GetXaxis()->SetTitle("#Phi (Radians)");
  hist_PhiNumRecoOverNumTrue_->GetYaxis()->SetTitle("# Reco/# True per Phi Bin");
  hist_deltaPhiVsEt_->GetXaxis()->SetTitle("Et (GeV)");
  hist_deltaPhiVsEt_->GetYaxis()->SetTitle("Reco Phi - True Phi per Et Bin");
  hist_deltaPhiVsE_->GetXaxis()->SetTitle("E (GeV)");
  hist_deltaPhiVsE_->GetYaxis()->SetTitle("Reco Phi - True Phi per E Bin");
  hist_deltaPhiVsEta_->GetXaxis()->SetTitle("#eta (Radians)");
  hist_deltaPhiVsEta_->GetYaxis()->SetTitle("Reco Phi - True Phi per Eta Bin");
  hist_deltaPhiVsPhi_->GetXaxis()->SetTitle("#phi (Radians)");
  hist_deltaPhiVsPhi_->GetYaxis()->SetTitle("Reco Phi - True Phi per Phi Bin");
  hist_resolutionPhiVsEt_->GetXaxis()->SetTitle("Et (GeV)");
  hist_resolutionPhiVsEt_->GetYaxis()->SetTitle("#sigma of Reco Phi - True Phi per Et Bin");
  hist_resolutionPhiVsE_->GetXaxis()->SetTitle("E (GeV)");
  hist_resolutionPhiVsE_->GetYaxis()->SetTitle("#sigma of Reco Phi - True Phi per E Bin");
  hist_resolutionPhiVsEta_->GetXaxis()->SetTitle("#eta (Radians)");
  hist_resolutionPhiVsEta_->GetYaxis()->SetTitle("#sigma of Reco Phi - True Phi per Eta Bin");
  hist_resolutionPhiVsPhi_->GetXaxis()->SetTitle("#phi (Radians)");
  hist_resolutionPhiVsPhi_->GetYaxis()->SetTitle("#sigma of Reco Phi - True Phi per Phi Bin");

  std::string recoParticleName;

  if( particleID == 22 ) recoParticleName = "Reco Higgs";
  else if( particleID == 11 ) recoParticleName = "Reco Z";

  hist_All_recoMass_->GetXaxis()->SetTitle((recoParticleName+" Mass (GeV)").c_str());
  hist_All_recoMass_->GetYaxis()->SetTitle("# of Reco Masses per Mass Bin");
  hist_BarrelOnly_recoMass_->GetXaxis()->SetTitle((recoParticleName+" Mass (GeV)").c_str());
  hist_BarrelOnly_recoMass_->GetYaxis()->SetTitle("# of Reco Masses per Mass Bin");
  hist_EndcapOnly_recoMass_->GetXaxis()->SetTitle((recoParticleName+" Mass (GeV)").c_str());
  hist_EndcapOnly_recoMass_->GetYaxis()->SetTitle("# of Reco Masses per Mass Bin");
  hist_Mixed_recoMass_->GetXaxis()->SetTitle((recoParticleName+" Mass (GeV)").c_str());
  hist_Mixed_recoMass_->GetYaxis()->SetTitle("# of Reco Masses per Mass Bin");
  hist_recoMass_withBackgroud_NoEtCut_->GetXaxis()->SetTitle((recoParticleName+" Mass (GeV)").c_str());
  hist_recoMass_withBackgroud_NoEtCut_->GetYaxis()->SetTitle("# of Reco Masses per Mass Bin");
  hist_recoMass_withBackgroud_5EtCut_->GetXaxis()->SetTitle((recoParticleName+" Mass (GeV)").c_str());
  hist_recoMass_withBackgroud_5EtCut_->GetYaxis()->SetTitle("# of Reco Masses per Mass Bin");
  hist_recoMass_withBackgroud_10EtCut_->GetXaxis()->SetTitle((recoParticleName+" Mass (GeV)").c_str());
  hist_recoMass_withBackgroud_10EtCut_->GetYaxis()->SetTitle("# of Reco Masses per Mass Bin");
  hist_recoMass_withBackgroud_20EtCut_->GetXaxis()->SetTitle((recoParticleName+" Mass (GeV)").c_str());
  hist_recoMass_withBackgroud_20EtCut_->GetYaxis()->SetTitle("# of Reco Masses per Mass Bin");
}

void EgammaObjects::setDrawOptions()
{
  hist_Et_->SetOption("e");
  hist_EtOverTruth_->SetOption("e");
  hist_EtEfficiency_->SetOption("e");
  hist_EtNumRecoOverNumTrue_->SetOption("e");
  hist_EtOverTruthVsEt_->SetOption("e");
  hist_EtOverTruthVsE_->SetOption("e");
  hist_EtOverTruthVsEta_->SetOption("e");
  hist_EtOverTruthVsPhi_->SetOption("e");
  hist_resolutionEtVsEt_->SetOption("e");
  hist_resolutionEtVsE_->SetOption("e");
  hist_resolutionEtVsEta_->SetOption("e");
  hist_resolutionEtVsPhi_->SetOption("e");

  hist_E_->SetOption("e");
  hist_EOverTruth_->SetOption("e");
  hist_EEfficiency_->SetOption("e");
  hist_ENumRecoOverNumTrue_->SetOption("e");
  hist_EOverTruthVsEt_->SetOption("e");
  hist_EOverTruthVsE_->SetOption("e");
  hist_EOverTruthVsEta_->SetOption("e");
  hist_EOverTruthVsPhi_->SetOption("e");
  hist_resolutionEVsEt_->SetOption("e");
  hist_resolutionEVsE_->SetOption("e");
  hist_resolutionEVsEta_->SetOption("e");
  hist_resolutionEVsPhi_->SetOption("e");

  hist_Eta_->SetOption("e");
  hist_EtaOverTruth_->SetOption("e");
  hist_EtaEfficiency_->SetOption("e");
  hist_EtaNumRecoOverNumTrue_->SetOption("e");
  hist_deltaEtaVsEt_->SetOption("e");
  hist_deltaEtaVsE_->SetOption("e");
  hist_deltaEtaVsEta_->SetOption("e");
  hist_deltaEtaVsPhi_->SetOption("e");
  hist_resolutionEtaVsEt_->SetOption("e");
  hist_resolutionEtaVsE_->SetOption("e");
  hist_resolutionEtaVsEta_->SetOption("e");
  hist_resolutionEtaVsPhi_->SetOption("e");

  hist_Phi_->SetOption("e");
  hist_PhiOverTruth_->SetOption("e");
  hist_PhiEfficiency_->SetOption("e");
  hist_PhiNumRecoOverNumTrue_->SetOption("e");
  hist_deltaPhiVsEt_->SetOption("e");
  hist_deltaPhiVsE_->SetOption("e");
  hist_deltaPhiVsEta_->SetOption("e");
  hist_deltaPhiVsPhi_->SetOption("e");
  hist_resolutionPhiVsEt_->SetOption("e");
  hist_resolutionPhiVsE_->SetOption("e");
  hist_resolutionPhiVsEta_->SetOption("e");
  hist_resolutionPhiVsPhi_->SetOption("e");

  hist_All_recoMass_->SetOption("e");
  hist_BarrelOnly_recoMass_->SetOption("e");
  hist_EndcapOnly_recoMass_->SetOption("e");
  hist_Mixed_recoMass_->SetOption("e");
  hist_recoMass_withBackgroud_NoEtCut_->SetOption("e");
  hist_recoMass_withBackgroud_5EtCut_->SetOption("e");
  hist_recoMass_withBackgroud_10EtCut_->SetOption("e");
  hist_recoMass_withBackgroud_20EtCut_->SetOption("e");
}

void EgammaObjects::saveHistos()
{
  rootFile_->cd();
  rootFile_->GetDirectory(particleString.c_str())->mkdir("ET");
  rootFile_->cd(("/"+particleString+"/ET").c_str());

  hist_Et_->Write();
  hist_EtOverTruth_->Write();
  hist_EtEfficiency_->Write();
  hist_EtNumRecoOverNumTrue_->Write();
  hist_EtOverTruthVsEt_->Write();
  hist_EtOverTruthVsE_->Write();
  hist_EtOverTruthVsEta_->Write();
  hist_EtOverTruthVsPhi_->Write();
  hist_resolutionEtVsEt_->Write();
  hist_resolutionEtVsE_->Write();
  hist_resolutionEtVsEta_->Write();
  hist_resolutionEtVsPhi_->Write();

  rootFile_->cd();
  rootFile_->GetDirectory(particleString.c_str())->mkdir("E");
  rootFile_->cd(("/"+particleString+"/E").c_str());

  hist_E_->Write();
  hist_EOverTruth_->Write();
  hist_EEfficiency_->Write();
  hist_ENumRecoOverNumTrue_->Write();
  hist_EOverTruthVsEt_->Write();
  hist_EOverTruthVsE_->Write();
  hist_EOverTruthVsEta_->Write();
  hist_EOverTruthVsPhi_->Write();
  hist_resolutionEVsEt_->Write();
  hist_resolutionEVsE_->Write();
  hist_resolutionEVsEta_->Write();
  hist_resolutionEVsPhi_->Write();

  rootFile_->cd();
  rootFile_->GetDirectory(particleString.c_str())->mkdir("Eta");
  rootFile_->cd(("/"+particleString+"/Eta").c_str());

  hist_Eta_->Write();
  hist_EtaOverTruth_->Write();
  hist_EtaEfficiency_->Write();
  hist_EtaNumRecoOverNumTrue_->Write();
  hist_deltaEtaVsEt_->Write();
  hist_deltaEtaVsE_->Write();
  hist_deltaEtaVsEta_->Write();
  hist_deltaEtaVsPhi_->Write();
  hist_resolutionEtaVsEt_->Write();
  hist_resolutionEtaVsE_->Write();
  hist_resolutionEtaVsEta_->Write();
  hist_resolutionEtaVsPhi_->Write();

  rootFile_->cd();
  rootFile_->GetDirectory(particleString.c_str())->mkdir("Phi");
  rootFile_->cd(("/"+particleString+"/Phi").c_str());

  hist_Phi_->Write();
  hist_PhiOverTruth_->Write();
  hist_PhiEfficiency_->Write();
  hist_PhiNumRecoOverNumTrue_->Write();
  hist_deltaPhiVsEt_->Write();
  hist_deltaPhiVsE_->Write();
  hist_deltaPhiVsEta_->Write();
  hist_deltaPhiVsPhi_->Write();
  hist_resolutionPhiVsEt_->Write();
  hist_resolutionPhiVsE_->Write();
  hist_resolutionPhiVsEta_->Write();
  hist_resolutionPhiVsPhi_->Write();

  std::string recoParticleName;

  if( particleID == 22 ) recoParticleName = "HiggsRecoMass";
  else if( particleID == 11 ) recoParticleName = "ZRecoMass";

  rootFile_->cd();
  rootFile_->GetDirectory(particleString.c_str())->mkdir(recoParticleName.c_str());
  rootFile_->cd(("/"+particleString+"/"+recoParticleName).c_str());

  hist_All_recoMass_->Write();
  hist_BarrelOnly_recoMass_->Write();
  hist_EndcapOnly_recoMass_->Write();
  hist_Mixed_recoMass_->Write();
  hist_recoMass_withBackgroud_NoEtCut_->Write();
  hist_recoMass_withBackgroud_5EtCut_->Write();
  hist_recoMass_withBackgroud_10EtCut_->Write();
  hist_recoMass_withBackgroud_20EtCut_->Write();

  rootFile_->cd();
  rootFile_->GetDirectory(particleString.c_str())->mkdir("_TempScatterPlots");
  rootFile_->cd(("/"+particleString+"/_TempScatterPlots").c_str());

  _TEMP_scatterPlot_EtOverTruthVsEt_->Write();
  _TEMP_scatterPlot_EtOverTruthVsE_->Write();
  _TEMP_scatterPlot_EtOverTruthVsEta_->Write();
  _TEMP_scatterPlot_EtOverTruthVsPhi_->Write();

  _TEMP_scatterPlot_EOverTruthVsEt_->Write();
  _TEMP_scatterPlot_EOverTruthVsE_->Write();
  _TEMP_scatterPlot_EOverTruthVsEta_->Write();
  _TEMP_scatterPlot_EOverTruthVsPhi_->Write();

  _TEMP_scatterPlot_deltaEtaVsEt_->Write();
  _TEMP_scatterPlot_deltaEtaVsE_->Write();
  _TEMP_scatterPlot_deltaEtaVsEta_->Write();
  _TEMP_scatterPlot_deltaEtaVsPhi_->Write();

  _TEMP_scatterPlot_deltaPhiVsEt_->Write();
  _TEMP_scatterPlot_deltaPhiVsE_->Write();
  _TEMP_scatterPlot_deltaPhiVsEta_->Write();
  _TEMP_scatterPlot_deltaPhiVsPhi_->Write();

  rootFile_->cd();
}