TPhotonIsEMSelector.cxx

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/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/

#include "TPhotonIsEMSelector.h"
#include <cmath>
 
Root::TPhotonIsEMSelector::TPhotonIsEMSelector(const char *name) :
  asg::AsgMessaging(std::string(name)),
  m_isEMMask(0),//All will pass if not defined
  m_forceConvertedPhotonPID(false),
  m_forceNonConvertedPhotonPID(false),
  m_cutPositionClusterEtaRange_Photon(0),
  m_cutPositionClusterBackEnergyFraction_Photon(0),
  // selection for tight photons
  m_cutPositionClusterHadronicLeakage_Photon(0),
  m_cutPositionClusterMiddleEnergy_Photon(0),
  m_cutPositionClusterMiddleEratio37_Photon(0),
  m_cutPositionClusterMiddleEratio33_Photon(0),
  m_cutPositionClusterMiddleWidth_Photon(0),
  m_cutPositionClusterStripsEratio_Photon(0),
  m_cutPositionClusterStripsDeltaE_Photon(0),
  m_cutPositionClusterStripsWtot_Photon(0),
  m_cutPositionClusterStripsFracm_Photon(0),
  m_cutPositionClusterStripsWeta1c_Photon(0),
  m_cutPositionClusterStripsDEmaxs1_Photon(0),
  m_cutPositionTrackMatchEoverP_Photon(0),
  m_cutPositionAmbiguityResolution_Photon(0),
  m_cutPositionIsolation_Photon(0),
  m_cutPositionClusterIsolation_Photon(0),
  m_cutPositionTrackIsolation_Photon(0),
  m_cutNameClusterEtaRange_Photon("ClusterEtaRange_Photon"),
  m_cutNameClusterBackEnergyFraction_Photon("ClusterBackEnergyFraction_Photon"),
  m_cutNameClusterHadronicLeakage_Photon("ClusterHadronicLeakage_Photon"),
  m_cutNameClusterMiddleEnergy_Photon("ClusterMiddleEnergy_Photon"),
  m_cutNameClusterMiddleEratio37_Photon("ClusterMiddleEratio37_Photon"),
  m_cutNameClusterMiddleEratio33_Photon("ClusterMiddleEratio33_Photon"),
  m_cutNameClusterMiddleWidth_Photon("ClusterMiddleWidth_Photon"),
  m_cutNameClusterStripsEratio_Photon("ClusterStripsEratio_Photon"),
  m_cutNameClusterStripsDeltaE_Photon("ClusterStripsDeltaE_Photon"),
  m_cutNameClusterStripsWtot_Photon("ClusterStripsWtot_Photon"),
  m_cutNameClusterStripsFracm_Photon("ClusterStripsFracm_Photon"),
  m_cutNameClusterStripsWeta1c_Photon("ClusterStripsWeta1c_Photon"),
  m_cutNameClusterStripsDEmaxs1_Photon("ClusterStripsDEmaxs1_Photon"),
  m_cutNameTrackMatchEoverP_Photon("TrackMatchEoverP_Photon"),
  m_cutNameAmbiguityResolution_Photon("AmbiguityResolution_Photon"),
  m_cutNameIsolation_Photon("Isolation_Photon"),
  m_cutNameClusterIsolation_Photon("ClusterIsolation_Photon"),
  m_cutNameTrackIsolation_Photon("TrackIsolation_Photon") {
  m_cutPositionClusterEtaRange_Photon = 0;
  m_cutPositionClusterBackEnergyFraction_Photon = 0;
  m_cutPositionClusterHadronicLeakage_Photon = 0;
  m_cutPositionClusterMiddleEnergy_Photon = 0;
  m_cutPositionClusterMiddleEratio37_Photon = 0;
  m_cutPositionClusterMiddleEratio33_Photon = 0;
  m_cutPositionClusterMiddleWidth_Photon = 0;
  m_cutPositionClusterStripsEratio_Photon = 0;
  m_cutPositionClusterStripsDeltaE_Photon = 0;
  m_cutPositionClusterStripsWtot_Photon = 0;
  m_cutPositionClusterStripsFracm_Photon = 0;
  m_cutPositionClusterStripsWeta1c_Photon = 0;
  m_cutPositionClusterStripsDEmaxs1_Photon = 0;
  m_cutPositionTrackMatchEoverP_Photon = 0;
  m_cutPositionAmbiguityResolution_Photon = 0;
  m_cutPositionIsolation_Photon = 0;
  m_cutPositionClusterIsolation_Photon = 0;
  m_cutPositionTrackIsolation_Photon = 0;
}
 
// =================================================================
Root::TPhotonIsEMSelector::~TPhotonIsEMSelector() = default;

StatusCode Root::TPhotonIsEMSelector::initialize() {
 
  StatusCode sc(StatusCode::SUCCESS);

  m_cutPositionClusterEtaRange_Photon =
    m_acceptInfo.addCut(m_cutNameClusterEtaRange_Photon, "Photon within eta range");
  if (m_cutPositionClusterEtaRange_Photon < 0) sc = StatusCode::FAILURE;
 
  int voidcutpos = m_acceptInfo.addCut("VOID1", "No Cut"); // bit 1 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID2", "No Cut"); // bit 2 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID3", "No Cut"); // bit 3 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID4", "No Cut"); // bit 4 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID5", "No Cut"); // bit 5 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID6", "No Cut"); // bit 6 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterBackEnergyFraction_Photon =
    m_acceptInfo.addCut(m_cutNameClusterBackEnergyFraction_Photon, "f3 < Cut");
  if (m_cutPositionClusterBackEnergyFraction_Photon < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID7", "No Cut"); // bit 8 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID8", "No Cut"); // bit 9 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterHadronicLeakage_Photon =
    m_acceptInfo.addCut(m_cutNameClusterHadronicLeakage_Photon, "Had leakage < Cut");
  if (m_cutPositionClusterHadronicLeakage_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterMiddleEnergy_Photon =
    m_acceptInfo.addCut(m_cutNameClusterMiddleEnergy_Photon, "Energy in second sampling (E277) > Cut");
  if (m_cutPositionClusterMiddleEnergy_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterMiddleEratio37_Photon =
    m_acceptInfo.addCut(m_cutNameClusterMiddleEratio37_Photon, "E237/E277 > Cut");
  if (m_cutPositionClusterMiddleEratio37_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterMiddleEratio33_Photon =
    m_acceptInfo.addCut(m_cutNameClusterMiddleEratio33_Photon, "E233/E237 > Cut");
  if (m_cutPositionClusterMiddleEratio33_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterMiddleWidth_Photon =
    m_acceptInfo.addCut(m_cutNameClusterMiddleWidth_Photon, "Weta2 < Cut");
  if (m_cutPositionClusterMiddleWidth_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterStripsEratio_Photon =
    m_acceptInfo.addCut(m_cutNameClusterStripsEratio_Photon, "f1 > Cut");
  if (m_cutPositionClusterStripsEratio_Photon < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID9", "No Cut"); // bit 16 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterStripsDeltaE_Photon =
    m_acceptInfo.addCut(m_cutNameClusterStripsDeltaE_Photon,
                        "difference between 2nd maximum and 1st minimum in strips < Cut");
  if (m_cutPositionClusterStripsDeltaE_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterStripsWtot_Photon =
    m_acceptInfo.addCut(m_cutNameClusterStripsWtot_Photon, "Wtot < Cut");
  if (m_cutPositionClusterStripsWtot_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterStripsFracm_Photon =
    m_acceptInfo.addCut(m_cutNameClusterStripsFracm_Photon, "Fracm < Cut");
  if (m_cutPositionClusterStripsFracm_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterStripsWeta1c_Photon =
    m_acceptInfo.addCut(m_cutNameClusterStripsWeta1c_Photon, "Weta1c < Cut");
  if (m_cutPositionClusterStripsWeta1c_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterStripsDEmaxs1_Photon =
    m_acceptInfo.addCut(m_cutNameClusterStripsDEmaxs1_Photon,
                        "difference between max and 2nd max in strips > Cut");
  if (m_cutPositionClusterStripsDEmaxs1_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionTrackMatchEoverP_Photon =
    m_acceptInfo.addCut(m_cutNameTrackMatchEoverP_Photon, "E/p within allowed range (conversions only)");
  if (m_cutPositionTrackMatchEoverP_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionAmbiguityResolution_Photon =
    m_acceptInfo.addCut(m_cutNameAmbiguityResolution_Photon,
                        "Passes tighter ambiguity resolution vs electron");
  if (m_cutPositionAmbiguityResolution_Photon < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID10", "No Cut"); // bit 24 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID11", "No Cut"); // bit 25 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID12", "No Cut"); // bit 26 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID13", "No Cut"); // bit 27 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;
 
  voidcutpos = m_acceptInfo.addCut("VOID14", "No Cut"); // bit 28 is not used
  if (voidcutpos < 0) sc = StatusCode::FAILURE;

  m_cutPositionIsolation_Photon =
    m_acceptInfo.addCut(m_cutNameIsolation_Photon, "Track and calorimetric isolation");
  if (m_cutPositionIsolation_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionClusterIsolation_Photon =
    m_acceptInfo.addCut(m_cutNameClusterIsolation_Photon, "calorimetric isolation only");
  if (m_cutPositionClusterIsolation_Photon < 0) sc = StatusCode::FAILURE;

  m_cutPositionTrackIsolation_Photon =
    m_acceptInfo.addCut(m_cutNameTrackIsolation_Photon, "track isolation only");
  if (m_cutPositionTrackIsolation_Photon < 0) sc = StatusCode::FAILURE;
 
  if (sc == StatusCode::FAILURE) {
    ATH_MSG_ERROR("Exceeded the number of allowed cuts in TPhotonIsEMSelector");
  }
 
  return sc;
}
 
asg::AcceptData Root::TPhotonIsEMSelector::fillAccept(unsigned int isEM) const {
  asg::AcceptData acceptData(&m_acceptInfo);
  for (int i = 0; i < 32; i++) {
    const unsigned int mask = (0x1u << i) & m_isEMMask;
    acceptData.setCutResult(i, (isEM & mask) == 0);
  }
 
  return acceptData;
}
 

asg::AcceptData
Root::TPhotonIsEMSelector::accept(
  // eta position in second sampling
  float eta2,
  // transverse energy in calorimeter (using eta position in second sampling)
  double et,
  // transverse energy in 1st scintillator of hadronic calorimeter/ET
  float Rhad1,
  // transverse energy in hadronic calorimeter/ET
  float Rhad,
  // E(7*7) in 2nd sampling
  float e277,
  // E(3*7)/E(7*7) in 2nd sampling
  float Reta,
  // E(3*3)/E(3*7) in 2nd sampling
  float Rphi,
  // shower width in 2nd sampling
  float weta2c,
  // fraction of energy reconstructed in strips
  float f1,
  // (E of 1st max in strips-E of 2nd max)/(E of 1st max+E of 2nd max)
  float Eratio,
  // E(2nd max)-E(min) in strips
  float DeltaE,
  // shower width in 3 strips in 1st sampling
  float weta1c,
  // total shower width in strips
  float wtot,
  // E(+/-3)-E(+/-1)/E(+/-1)
  float fracm,
  // fraction of energy reconstructed in the 3rd sampling
  float f3,
  // E/p
  double ep,
  // is it a conversion
  bool isConversion,
  // pileup
  float mu) {
 
  // Do the actual selection
 
  unsigned int isEM = calcIsEm(eta2,
                               et,
                               Rhad1,
                               Rhad,
                               e277,
                               Reta,
                               Rphi,
                               weta2c,
                               f1,
                               Eratio,
                               DeltaE,
                               weta1c,
                               wtot,
                               fracm,
                               f3,
                               ep,
                               isConversion,
                               mu);
 
  return fillAccept(isEM);
}
 
 
//=============================================================================
// calculate the isEM. (Used internally by accept)
//=============================================================================
unsigned int Root::TPhotonIsEMSelector::calcIsEm(
  // eta position in second sampling
  float eta2,
  // transverse energy in calorimeter (using eta position in second sampling)
  double et,
  // transverse energy in 1st scintillator of hadronic calorimeter/ET
  float Rhad1,
  // transverse energy in hadronic calorimeter/ET
  float Rhad,
  // E(7*7) in 2nd sampling
  float e277,
  // E(3*7)/E(7*7) in 2nd sampling
  float Reta,
  // E(3*3)E(3*7) in 2nd sampling
  float Rphi,
  // shower width in 2nd sampling
  float weta2c,
  // fraction of energy reconstructed in strips
  float f1,
  // (E of 1st max in strips-E of 2nd max)/(E of 1st max+E of 2nd max)
  float Eratio,
  // E(2nd max)-E(min) in strips
  float DeltaE,
  // shower width in 3 strips in 1st sampling
  float weta1c,
  // total shower width in strips
  float wtot,
  // E(+/-3)-E(+/-1)/E(+/-1)
  float fracm,
  // fraction of energy reconstructed in the 3rd sampling
  float f3,
  // E/p
  double ep,
  // is it a conversion
  bool isConversion,
  // pileup
  float mu) const {
  unsigned int iflag = 0;
 
  // apply calorimeter selection for photons
  if (m_forceConvertedPhotonPID) {
    // force to test converted photon hypothesis
    iflag = calocuts_photonsConverted(eta2,
                                      et,
                                      Rhad1,
                                      Rhad,
                                      e277,
                                      Reta,
                                      Rphi,
                                      weta2c,
                                      f1,
                                      Eratio,
                                      DeltaE,
                                      weta1c,
                                      wtot,
                                      fracm,
                                      f3,
                                      ep,
                                      iflag,
                                      mu);
 
  } else if (m_forceNonConvertedPhotonPID || !isConversion) {
    iflag = calocuts_photonsNonConverted(eta2,
                                         et,
                                         Rhad1,
                                         Rhad,
                                         e277,
                                         Reta,
                                         Rphi,
                                         weta2c,
                                         f1,
                                         Eratio,
                                         DeltaE,
                                         weta1c,
                                         wtot,
                                         fracm,
                                         f3,
                                         iflag,
                                         mu);
  } else {
    iflag = calocuts_photonsConverted(eta2,
                                      et,
                                      Rhad1,
                                      Rhad,
                                      e277,
                                      Reta,
                                      Rphi,
                                      weta2c,
                                      f1,
                                      Eratio,
                                      DeltaE,
                                      weta1c,
                                      wtot,
                                      fracm,
                                      f3,
                                      ep,
                                      iflag,
                                      mu);
  }
 
 
  return iflag;
}
 

unsigned int Root::TPhotonIsEMSelector::calocuts_photonsNonConverted(
  // eta position in second sampling
  float eta2,
  // transverse energy in calorimeter
  double et,
  // hadronic leakage ratios
  float Rhad1,
  float Rhad,
  // E(7*7) in 2nd sampling
  float e277,
  // ratios
  float Reta,
  float Rphi,
  // shower width in 2nd sampling
  float weta2c,
  // fraction of energy reconstructed in strips
  float f1,
  // (Emax1-Emax2)/(Emax1+Emax2)
  float Eratio,
  // difference of energy between max and min
  float DeltaE,
  // shower width in 3 strips in 1st sampling
  float weta1c,
  // total shower width in strips
  float wtot,
  // E(+/-3)-E(+/-1)/E(+/-1)
  float fracm,
  // fraction of energy reconstructed in the 3rd sampling
  float f3,
  unsigned int iflag,
  // pileup
  float mu) const {
  //
  // second sampling cuts
  //
  if ((m_e277_photonsNonConverted.empty())) {
    ATH_MSG_WARNING("e277 needs to  be set ");
  }
  if (!m_e277_photonsNonConverted.empty() && e277 >= m_e277_photonsNonConverted[0]) {
   int ibine = 0;
    // loop on ET range
    for (unsigned int ibe = 1; ibe <= m_cutBinEnergy_photonsNonConverted.size();
         ibe++) {
      if (ibe < m_cutBinEnergy_photonsNonConverted.size()) {
        if (et >= m_cutBinEnergy_photonsNonConverted[ibe - 1] &&
            et < m_cutBinEnergy_photonsNonConverted[ibe]) {
          ibine = ibe;
        }
      } else if (ibe == m_cutBinEnergy_photonsNonConverted.size()) {
        if (et >= m_cutBinEnergy_photonsNonConverted[ibe - 1]) {
          ibine = ibe;
        }
      }
    }
 
    int ibinEta = -1;
    // loop on eta range
    for (unsigned int ibin = 0; ibin < m_cutBinEta_photonsNonConverted.size();
         ibin++) {
      if (ibin == 0) {
        if (eta2 < m_cutBinEta_photonsNonConverted[0]) {
          ibinEta = 0;
        }
      } else {
        if (eta2 >= m_cutBinEta_photonsNonConverted[ibin - 1] &&
            eta2 < m_cutBinEta_photonsNonConverted[ibin]) {
          ibinEta = ibin;
        }
      }
    }
    
    //Negative ibinEta means we are ouside the range
    //e.g abs(eta) > 2.47 or so
    if (ibinEta < 0) {
      iflag |= (0x1 << egammaPID::ClusterEtaRange_Photon);
      return iflag;
    }
 
    int ibinMu = 0;
    // loop on mu range
    for (unsigned int ibin=1; ibin <= m_cutBinMu_photonsNonConverted.size(); 
         ibin++) {
      if ( ibin < m_cutBinMu_photonsNonConverted.size() ) {
        if ( mu >= m_cutBinMu_photonsNonConverted[ibin-1] && 
         mu < m_cutBinMu_photonsNonConverted[ibin] ) {
            ibinMu = ibin;
          }
        }
      else if ( ibin == m_cutBinMu_photonsNonConverted.size() ) {
        if ( mu >= m_cutBinMu_photonsNonConverted[ibin-1] ) {
          ibinMu = ibin;
        }
      }
    }  
 
    // check the bin number
    //const int ibin_combined = ibine * m_cutBinEta_photonsNonConverted.size() + ibinEta;
    const int ibin_combined
       = ibinMu * ( m_cutBinEta_photonsNonConverted.size() *
                  ( m_cutBinEnergy_photonsNonConverted.size()+1) )
       + ibine * m_cutBinEta_photonsNonConverted.size()
       + ibinEta;
 
    // hadronic leakage
    if (checkVar(m_cutHadLeakage_photonsNonConverted, 23)) {
      if (eta2 < 0.8) {
        if (Rhad1 > m_cutHadLeakage_photonsNonConverted[ibin_combined])
          iflag |= (0x1 << egammaPID::ClusterHadronicLeakage_Photon);
      } else if (eta2 >= 0.8 && eta2 < 1.37) {
        if (Rhad > m_cutHadLeakage_photonsNonConverted[ibin_combined])
          iflag |= (0x1 << egammaPID::ClusterHadronicLeakage_Photon);
      } else {
        if (Rhad1 > m_cutHadLeakage_photonsNonConverted[ibin_combined])
          iflag |= (0x1 << egammaPID::ClusterHadronicLeakage_Photon);
      }
    }
 
    // F3
    if (checkVar(m_cutF3_photonsNonConverted, 23)) {
      if (f3 > m_cutF3_photonsNonConverted[ibin_combined]) {
        iflag |= (0x1 << egammaPID::ClusterBackEnergyFraction_Photon);
      }
    }
 
    // E237/E277
    if (checkVar(m_Reta37_photonsNonConverted, 23)) {
      if (Reta < m_Reta37_photonsNonConverted[ibin_combined]) {
        iflag |= (0x1 << egammaPID::ClusterMiddleEratio37_Photon);
      }
    }
 
    // E233/E237
    if (checkVar(m_Rphi33_photonsNonConverted, 23)) {
      if (Rphi < m_Rphi33_photonsNonConverted[ibin_combined]) {
        iflag |= (0x1 << egammaPID::ClusterMiddleEratio33_Photon);
      }
    }
 
    // width in 2n sampling
    if (checkVar(m_weta2_photonsNonConverted, 23)) {
      if (weta2c > m_weta2_photonsNonConverted[ibin_combined]) {
        iflag |= (0x1 << egammaPID::ClusterMiddleWidth_Photon);
      }
    }
  } else {
    iflag |= (0x1 << egammaPID::ClusterMiddleEnergy_Photon);
  }
 
  //
  // first sampling cuts
  //
  if (!m_cutBinEtaStrips_photonsNonConverted.empty()) {
 
    int ibineStrips = 0;
    // loop on ET range
    for (unsigned int ibe = 1; ibe <= m_cutBinEnergyStrips_photonsNonConverted.size(); ibe++) {
      if (ibe < m_cutBinEnergyStrips_photonsNonConverted.size()) {
        if (et >= m_cutBinEnergyStrips_photonsNonConverted[ibe - 1] &&
            et < m_cutBinEnergyStrips_photonsNonConverted[ibe]) {
          ibineStrips = ibe;
        }
      } else if (ibe == m_cutBinEnergyStrips_photonsNonConverted.size()) {
        if (et >= m_cutBinEnergyStrips_photonsNonConverted[ibe - 1]) {
          ibineStrips = ibe;
        }
      }
    }
 
    int ibinEtaStrips = -1;
    // loop on eta range
    for (unsigned int ibin = 0; ibin < m_cutBinEtaStrips_photonsNonConverted.size(); ibin++) {
      if (ibin == 0) {
        if (eta2 < m_cutBinEtaStrips_photonsNonConverted[0]) {
          ibinEtaStrips = 0;
        }
      } else {
        if (eta2 >= m_cutBinEtaStrips_photonsNonConverted[ibin - 1] &&
            eta2 < m_cutBinEtaStrips_photonsNonConverted[ibin]) {
          ibinEtaStrips = ibin;
        }
      }
    }
    
    //Negative ibinEta means we are ouside the range
    //e.g abs(eta) > 2.47 or so
    if (ibinEtaStrips < 0) {
      iflag |= (0x1 << egammaPID::ClusterEtaRange_Photon);
      return iflag;
    }
 
    int ibinMuStrips = 0;
    // loop on mu range
    for (unsigned int ibmu=1; 
         ibmu <= m_cutBinMuStrips_photonsNonConverted.size(); ibmu++) {
      if ( ibmu <m_cutBinMuStrips_photonsNonConverted.size() ) {
    if ( mu >= m_cutBinMuStrips_photonsNonConverted[ibmu-1] && 
         mu < m_cutBinMuStrips_photonsNonConverted[ibmu] ) {
      ibinMuStrips = ibmu;
    }
      }
      else if ( ibmu == m_cutBinMuStrips_photonsNonConverted.size() ) {
    if ( mu >= m_cutBinMuStrips_photonsNonConverted[ibmu-1] ) {
      ibinMuStrips = ibmu;
    }
      }
    }
   
    //const int ibin_combinedStrips = ibineStrips * m_cutBinEtaStrips_photonsNonConverted.size() + ibinEtaStrips;
    const int ibin_combinedStrips 
      = ibinMuStrips * m_cutBinEtaStrips_photonsNonConverted.size() 
                     * ( m_cutBinEnergyStrips_photonsNonConverted.size()+1 )
      + ibineStrips * m_cutBinEtaStrips_photonsNonConverted.size()
      + ibinEtaStrips;
 
    if (checkVar(m_f1_photonsNonConverted, 0)) {
      if (f1 < m_f1_photonsNonConverted[0]) {
        iflag |= (0x1 << egammaPID::ClusterStripsEratio_Photon);
      }
    }
 
    // Delta E
    if (checkVar(m_deltae_photonsNonConverted, 26)) {
      if (DeltaE > m_deltae_photonsNonConverted[ibin_combinedStrips]) {
        iflag |= (0x1 << egammaPID::ClusterStripsDeltaE_Photon);
      }
    }
 
    // Eratio
    if (checkVar(m_DEmaxs1_photonsNonConverted, 26)) {
      if (Eratio <= m_DEmaxs1_photonsNonConverted[ibin_combinedStrips])
        iflag |= (0x1 << egammaPID::ClusterStripsDEmaxs1_Photon);
    }
 
    // total width in strips
    if (checkVar(m_wtot_photonsNonConverted, 26)) {
      if (wtot > m_wtot_photonsNonConverted[ibin_combinedStrips]) {
        iflag |= (0x1 << egammaPID::ClusterStripsWtot_Photon);
      }
    }
 
    // (E(+/-3)-E(+/-1))/E(+/-1)
    if (checkVar(m_fracm_photonsNonConverted, 26)) {
      if (fracm > m_fracm_photonsNonConverted[ibin_combinedStrips]) {
        iflag |= (0x1 << egammaPID::ClusterStripsFracm_Photon);
      }
    }
 
    // width in 3 strips
    if (checkVar(m_w1_photonsNonConverted, 26)) {
      if (weta1c > m_w1_photonsNonConverted[ibin_combinedStrips]) {
        iflag |= (0x1 << egammaPID::ClusterStripsWeta1c_Photon);
      }
    }
  }
  return iflag;
}

unsigned int Root::TPhotonIsEMSelector::calocuts_photonsConverted(
  // eta position in second sampling
  float eta2,
  // transverse energy in calorimeter
  double et,
  // hadronic leakage ratios
  float Rhad1,
  float Rhad,
  // E(7*7) in 2nd sampling
  float e277,
  // ratios
  float Reta,
  float Rphi,
  // shower width in 2nd sampling
  float weta2c,
  // fraction of energy reconstructed in strips
  float f1,
  // (Emax1-Emax2)/(Emax1+Emax2)
  float Eratio,
  // difference of energy between max and min
  float DeltaE,
  // parametrization of E(2nd max)
  // float deltaemax2,
  // shower width in 3 strips in 1st sampling
  float weta1c,
  // total shower width in strips
  float wtot,
  // E(+/-3)-E(+/-1)/E(+/-1)
  float fracm,
  // fraction of energy reconstructed in the 3rd sampling
  float f3,
  // E/p
  double ep,
  unsigned int iflag,
  // pileup
  float mu) const {
  int ibine = 0;
  // loop on ET range
  for (unsigned int ibe = 1; ibe <= m_cutBinEnergy_photonsConverted.size(); ibe++) {
    if (ibe < m_cutBinEnergy_photonsConverted.size()) {
      if (et >= m_cutBinEnergy_photonsConverted[ibe - 1] &&
          et < m_cutBinEnergy_photonsConverted[ibe]) {
        ibine = ibe;
      }
    } else if (ibe == m_cutBinEnergy_photonsConverted.size()) {
      if (et >= m_cutBinEnergy_photonsConverted[ibe - 1]) {
        ibine = ibe;
      }
    }
  }
 
  int ibinEta = -1;
  // loop on eta range
  for (unsigned int ibin = 0; ibin < m_cutBinEta_photonsConverted.size(); ibin++) {
    if (ibin == 0) {
      if (eta2 < m_cutBinEta_photonsConverted[0]) {
        ibinEta = 0;
      }
    } else {
      if (eta2 >= m_cutBinEta_photonsConverted[ibin - 1] &&
          eta2 < m_cutBinEta_photonsConverted[ibin]) {
        ibinEta = ibin;
      }
    }
  }
  //Negative ibinEta means we are ouside the range
  //e.g abs(eta) > 2.47 or so
  if (ibinEta < 0) {
    iflag |= (0x1 << egammaPID::ClusterEtaRange_Photon);
    return iflag;
  }
 
  int ibinMu = 0;
  // loop on mu range
  for (unsigned int ibin=1; ibin <= m_cutBinMu_photonsConverted.size(); ibin++) {
    if ( ibin < m_cutBinMu_photonsConverted.size() ) {
      if ( mu >= m_cutBinMu_photonsConverted[ibin-1] && 
           mu < m_cutBinMu_photonsConverted[ibin] ) {
        ibinMu = ibin;
      }
    }
    else if ( ibin == m_cutBinMu_photonsConverted.size() ) {
      if ( mu >= m_cutBinMu_photonsConverted[ibin-1] ) {
        ibinMu = ibin;
      }
    }
  }
 
  // check the bin number
  //const int ibin_combined = ibine * m_cutBinEta_photonsConverted.size() + ibinEta;
  const int ibin_combined
     = ibinMu * ( m_cutBinEta_photonsConverted.size() *
                ( m_cutBinEnergy_photonsConverted.size()+1 ) )
     + ibine * m_cutBinEta_photonsConverted.size() 
     + ibinEta;
 
  //
  // second sampling cuts
  //
  if ((m_e277_photonsConverted.empty())) {
    ATH_MSG_WARNING("e277 needs to  be set ");
  }
  if (!m_e277_photonsConverted.empty() && e277 >= m_e277_photonsConverted[0]) {
 
    // hadronic leakage
    if (checkVar(m_cutHadLeakage_photonsConverted, 13)) {
      if (eta2 < 0.8) {
        if (Rhad1 > m_cutHadLeakage_photonsConverted[ibin_combined])
          iflag |= (0x1 << egammaPID::ClusterHadronicLeakage_Photon);
      } else if (eta2 >= 0.8 && eta2 < 1.37) {
        if (Rhad > m_cutHadLeakage_photonsConverted[ibin_combined])
          iflag |= (0x1 << egammaPID::ClusterHadronicLeakage_Photon);
      } else {
        if (Rhad1 > m_cutHadLeakage_photonsConverted[ibin_combined])
          iflag |= (0x1 << egammaPID::ClusterHadronicLeakage_Photon);
      }
    }
 
    // F3
    if (checkVar(m_cutF3_photonsConverted, 13)) {
      if (f3 > m_cutF3_photonsConverted[ibin_combined]) {
        iflag |= (0x1 << egammaPID::ClusterBackEnergyFraction_Photon);
      }
    }
 
    // E237/E277
    if (checkVar(m_Reta37_photonsConverted, 13)) {
      if (Reta < m_Reta37_photonsConverted[ibin_combined]) {
        iflag |= (0x1 << egammaPID::ClusterMiddleEratio37_Photon);
      }
    }
 
    // E233/E237
    if (checkVar(m_Rphi33_photonsConverted, 13)) {
      if (Rphi < m_Rphi33_photonsConverted[ibin_combined]) {
        iflag |= (0x1 << egammaPID::ClusterMiddleEratio33_Photon);
      }
    }
 
    // width in 2n sampling
    if (checkVar(m_weta2_photonsConverted, 13)) {
      if (weta2c > m_weta2_photonsConverted[ibin_combined]) {
        iflag |= (0x1 << egammaPID::ClusterMiddleWidth_Photon);
      }
    }
  } else {
    iflag |= (0x1 << egammaPID::ClusterMiddleEnergy_Photon);
  }
 
  //
  // first sampling cuts
  //
  if (!m_cutBinEtaStrips_photonsConverted.empty()) {
 
    int ibineStrips = 0;
    // loop on ET range
    for (unsigned int ibe = 1; ibe <= m_cutBinEnergyStrips_photonsConverted.size(); ibe++) {
      if (ibe < m_cutBinEnergyStrips_photonsConverted.size()) {
        if (et >= m_cutBinEnergyStrips_photonsConverted[ibe - 1] &&
            et < m_cutBinEnergyStrips_photonsConverted[ibe]) {
          ibineStrips = ibe;
        }
      } else if (ibe == m_cutBinEnergyStrips_photonsConverted.size()) {
        if (et >= m_cutBinEnergyStrips_photonsConverted[ibe - 1]) {
          ibineStrips = ibe;
        }
      }
    }
 
    int ibinEtaStrips = -1;
    // loop on eta range
    for (unsigned int ibin = 0; ibin < m_cutBinEtaStrips_photonsConverted.size(); ibin++) {
      if (ibin == 0) {
        if (eta2 < m_cutBinEtaStrips_photonsConverted[0]) {
          ibinEtaStrips = 0;
        }
      } else {
        if (eta2 >= m_cutBinEtaStrips_photonsConverted[ibin - 1] &&
            eta2 < m_cutBinEtaStrips_photonsConverted[ibin]) {
          ibinEtaStrips = ibin;
        }
      }
    }
 
    int ibinMuStrips = 0;
    // loop on mu range
    for (unsigned int ibmu=1; 
         ibmu <= m_cutBinMuStrips_photonsConverted.size(); ibmu++) {
      if ( ibmu <m_cutBinMuStrips_photonsConverted.size() ) {
    if ( mu >= m_cutBinMuStrips_photonsConverted[ibmu-1] && 
         mu < m_cutBinMuStrips_photonsConverted[ibmu] ) {
      ibinMuStrips = ibmu;
    }
      }
      else if ( ibmu == m_cutBinMuStrips_photonsConverted.size() ) {
    if ( mu >= m_cutBinMuStrips_photonsConverted[ibmu-1] ) {
      ibinMuStrips = ibmu;
    }
      }
    }
 
    // check the bin number
    if (ibinEtaStrips == -1) {
      iflag |= (0x1 << egammaPID::ClusterEtaRange_Photon);
      return iflag;
    }
 
    //const int ibin_combinedStrips = ibineStrips * m_cutBinEtaStrips_photonsConverted.size() + ibinEtaStrips;
    const int ibin_combinedStrips 
      = ibinMuStrips * m_cutBinEtaStrips_photonsNonConverted.size()
                     * ( m_cutBinEnergyStrips_photonsNonConverted.size()+1 )
      + ibineStrips * m_cutBinEtaStrips_photonsNonConverted.size()
      + ibinEtaStrips;
 
    if (checkVar(m_f1_photonsConverted, 0)) {
      if (f1 < m_f1_photonsConverted[0]) {
        iflag |= (0x1 << egammaPID::ClusterStripsEratio_Photon);
      }
    }
 
    // Delta E
    if (checkVar(m_deltae_photonsConverted, 16)) {
      if (DeltaE > m_deltae_photonsConverted[ibin_combinedStrips]) {
        iflag |= (0x1 << egammaPID::ClusterStripsDeltaE_Photon);
      }
    }
 
    // Eratio
    if (checkVar(m_DEmaxs1_photonsConverted, 16)) {
      if (Eratio <= m_DEmaxs1_photonsConverted[ibin_combinedStrips])
        iflag |= (0x1 << egammaPID::ClusterStripsDEmaxs1_Photon);
    }
 
    // total width in strips
    if (checkVar(m_wtot_photonsConverted, 16)) {
      if (wtot > m_wtot_photonsConverted[ibin_combinedStrips]) {
        iflag |= (0x1 << egammaPID::ClusterStripsWtot_Photon);
      }
    }
 
    // (E(+/-3)-E(+/-1))/E(+/-1)
    if (checkVar(m_fracm_photonsConverted, 16)) {
      if (fracm > m_fracm_photonsConverted[ibin_combinedStrips]) {
        iflag |= (0x1 << egammaPID::ClusterStripsFracm_Photon);
      }
    }
 
    // width in 3 strips
    if (checkVar(m_w1_photonsConverted, 16)) {
      if (weta1c > m_w1_photonsConverted[ibin_combinedStrips]) {
        iflag |= (0x1 << egammaPID::ClusterStripsWeta1c_Photon);
      }
    }
  }
 
  // cut on E/p
  //
  if (checkVar(m_cutminEp_photonsConverted, 13) &&
      checkVar(m_cutmaxEp_photonsConverted, 13)) {
    if (ep < m_cutminEp_photonsConverted[ibin_combined] ||
        ep > m_cutmaxEp_photonsConverted[ibin_combined])
      iflag |= (0x1 << egammaPID::TrackMatchEoverP_Photon);
  }
 
  return iflag;
}

template<typename T>
bool Root::TPhotonIsEMSelector::checkVar(const std::vector <T> &vec, int choice) const {
  // check vector size
 
 
  const unsigned int etaNB_photonsConv = m_cutBinEta_photonsConverted.size();
  const unsigned int etNB_photonsConv = m_cutBinEnergy_photonsConverted.size();
  const unsigned int muNB_photonsConv  = m_cutBinMu_photonsConverted.size();
  const unsigned int etaStripsNB_photonsConv = m_cutBinEtaStrips_photonsConverted.size();
  const unsigned int etStripsNB_photonsConv = m_cutBinEnergyStrips_photonsConverted.size();
  const unsigned int muStripsNB_photonsConv  = m_cutBinMuStrips_photonsConverted.size();
  const unsigned int etaNB_photonsNonConv = m_cutBinEta_photonsNonConverted.size();
  const unsigned int etNB_photonsNonConv = m_cutBinEnergy_photonsNonConverted.size();
  const unsigned int muNB_photonsNonConv  = m_cutBinMu_photonsNonConverted.size();
  const unsigned int etaStripsNB_photonsNonConv = m_cutBinEtaStrips_photonsNonConverted.size();
  const unsigned int etStripsNB_photonsNonConv = m_cutBinEnergyStrips_photonsNonConverted.size();
  const unsigned int muStripsNB_photonsNonConv = m_cutBinMuStrips_photonsNonConverted.size();
 
  unsigned int combinedStripsNB_photonsConv = etaStripsNB_photonsConv;
  unsigned int combinedStripsNB_photonsNonConv = etaStripsNB_photonsNonConv;
  unsigned int combinedNB_photonsNonConv = etaNB_photonsNonConv;
  unsigned int combinedNB_photonsConv = etaNB_photonsConv;
 
  // pt-dependent cuts
  if (etStripsNB_photonsNonConv > 0)
    combinedStripsNB_photonsNonConv = etaStripsNB_photonsNonConv * (etStripsNB_photonsNonConv + 1);
 
  if (etNB_photonsConv > 0)
    combinedNB_photonsConv = etaNB_photonsConv * (etNB_photonsConv + 1);
 
  if (etStripsNB_photonsConv > 0)
    combinedStripsNB_photonsConv = etaStripsNB_photonsConv * (etStripsNB_photonsConv + 1);
 
  if (etNB_photonsNonConv > 0)
    combinedNB_photonsNonConv = etaNB_photonsNonConv * (etNB_photonsNonConv + 1);
 
  // mu-dependent cuts
  if (muStripsNB_photonsNonConv > 0)
    combinedStripsNB_photonsNonConv *= (muStripsNB_photonsNonConv + 1);
 
  if (muNB_photonsConv > 0)
    combinedNB_photonsConv *= (muNB_photonsConv + 1);
 
  if (muStripsNB_photonsConv > 0)
    combinedStripsNB_photonsConv *= (muStripsNB_photonsConv + 1);
 
  if (muNB_photonsNonConv > 0)
    combinedNB_photonsNonConv *= (muNB_photonsNonConv + 1);
 
  // if size of vector is 0 it means cut is not defined
  if (vec.empty()) return false;
  // check if size is 1
  if (choice == 0) {
    if (vec.size() != 1) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs 1");
      return false;
    }
  }
 
  // check if size is etaNB_photonsConv
  if (choice == 11) {
 
    if (vec.size() != etaNB_photonsConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs etaNB_photonsConv "
                      << etaNB_photonsConv);
      return false;
 
    }
  }
 
  // check if size is etNB_photonsConv
  if (choice == 12) {
    if (vec.size() != etNB_photonsConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs etNB_photonsConv="
                      << etNB_photonsConv);
      return false;
    }
  }
 
  // check if size is combinedNB_photonsConv
  if (choice == 13) {
    if (vec.size() != combinedNB_photonsConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs combinedNB_photonsConv="
                      << combinedNB_photonsConv);
      return false;
    }
  }
 
  // check if size is etaStripsNB_photonsConv
  if (choice == 14) {
    if (vec.size() != etaStripsNB_photonsConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs etaStripsNB_photonsConv="
                      << etaStripsNB_photonsConv);
      return false;
    }
  }
 
  // check if size is etStripsNB_photonsConv
  if (choice == 15) {
    if (vec.size() != etStripsNB_photonsConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs etStripsNB_photonsConv="
                      << etStripsNB_photonsConv);
      return false;
    }
  }
 
  // check if size is combinedStripsNB_photonsConv
  if (choice == 16) {
    if (vec.size() != combinedStripsNB_photonsConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs combinedStripsNB_photonsConv="
                      << combinedStripsNB_photonsConv);
      return false;
    }
  }
 
  // check if size is etaNB_photonsNonConv
  if (choice == 21) {
    if (vec.size() != etaNB_photonsNonConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs etaNB_photonsNonConv "
                      << etaNB_photonsNonConv);
      return false;
    }
  }
 
  // check if size is etNB_photonsNonConv
  if (choice == 22) {
    if (vec.size() != etNB_photonsNonConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs etNB_photonsNonConv="
                      << etNB_photonsNonConv);
      return false;
    }
  }
 
  // check if size is combinedNB_photonsNonConv
  if (choice == 23) {
    if (vec.size() != combinedNB_photonsNonConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs combinedNB_photonsNonConv="
                      << combinedNB_photonsNonConv);
      return false;
    }
  }
 
  // check if size is etaStripsNB_photonsNonConv
  if (choice == 24) {
    if (vec.size() != etaStripsNB_photonsNonConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs etaStripsNB_photonsNonConv="
                      << etaStripsNB_photonsNonConv);
      return false;
    }
  }
 
  // check if size is etStripsNB_photonsNonConv
  if (choice == 25) {
    if (vec.size() != etStripsNB_photonsNonConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs etStripsNB_photonsNonConv="
                      << etStripsNB_photonsNonConv);
      return false;
    }
  }
 
  // check if size is combinedStripsNB_photonsNonConv
  if (choice == 26) {
    if (vec.size() != combinedStripsNB_photonsNonConv) {
      ATH_MSG_ERROR("vector size is "
                      << vec.size() << " but needs combinedStripsNB_photonsNonConv="
                      << combinedStripsNB_photonsNonConv);
      return false;
    }
  }
 
  return true;
 
 
}
 
template bool Root::TPhotonIsEMSelector::checkVar<float>(const std::vector<float> &vec, int choice) const;
 
template bool Root::TPhotonIsEMSelector::checkVar<int>(const std::vector<int> &vec, int choice) const;