TrigEgammaEmulationFastElectronHypoTool.cxx

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/*
 *   Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
 */
 
 
#include "TrigEgammaEmulationTool/TrigEgammaEmulationFastElectronHypoTool.h"
#include "GaudiKernel/SystemOfUnits.h"
 
 
using namespace Trig;
 
//**********************************************************************
 
TrigEgammaEmulationFastElectronHypoTool::TrigEgammaEmulationFastElectronHypoTool( const std::string& myname )
    : TrigEgammaEmulationBaseHypoTool(myname)
{}
 
 
 
//=================================================================
 
bool TrigEgammaEmulationFastElectronHypoTool::emulate(const Trig::TrigData &input,
                                                      bool &pass) const
{
  pass=false;
 
  if( !input.roi )  return false;
 
  if( input.trig_electrons.empty() )  return false;
 
  for ( const auto &el : input.trig_electrons )
  {
    if( decide( input, el ) ){
      pass=true;
      return true;
    }
  }
 
  return false;
}
 
//=================================================================
 
bool TrigEgammaEmulationFastElectronHypoTool::decide( const Trig::TrigData &/*input*/ ,
                                                      const xAOD::TrigElectron* electron ) const 
{
 
  if ( m_acceptAll ) {
    ATH_MSG_DEBUG( "AcceptAll property is set: taking all events" );
    return true;
   } else {
     ATH_MSG_DEBUG( "AcceptAll property not set: applying selection" );
   }
 
 
  const xAOD::TrackParticle* trkIter = electron-> trackParticle();
  if ( trkIter == 0 ){  // disconsider candidates without track
     return false;
  }
 
  // Retrieve all quantities
  float dPhiCalo    = electron->trkClusDphi();
  float dEtaCalo    = electron->trkClusDeta();
  float ptCalo      = electron->pt();     
  float eToverPt    = electron->etOverPt();   
  float NTRHits     = electron->nTRTHits();
  float NStrawHits  = electron->nTRTHiThresholdHits();
  float TRTHitRatio = NStrawHits == 0 ? 1e10 : NTRHits/NStrawHits;
 
  if ( ptCalo < m_trackPt ){ 
    ATH_MSG_DEBUG( "Fails pt cut" << ptCalo << " < " << m_trackPt );
    return false;
  }
 
  if ( dEtaCalo > m_caloTrackDEta ) {
    ATH_MSG_DEBUG( "Fails dEta cut " << dEtaCalo << " < " << m_caloTrackDEta );
    return false;
  }
  if ( dPhiCalo > m_caloTrackDPhi ) {
    ATH_MSG_DEBUG( "Fails dPhi cut " << dPhiCalo << " < " << m_caloTrackDPhi );
    return false;
  }
 
  if( eToverPt <  m_caloTrackdEoverPLow ) {
    ATH_MSG_DEBUG( "Fails eoverp low cut " << eToverPt << " < " <<  m_caloTrackdEoverPLow );
    return false;
  }
  if ( eToverPt > m_caloTrackdEoverPHigh ) {
    ATH_MSG_DEBUG( "Fails eoverp high cut " << eToverPt << " < " << m_caloTrackdEoverPHigh );
    return false;
  }
  if ( TRTHitRatio < m_trtRatio ){
    ATH_MSG_DEBUG( "Fails TRT cut " << TRTHitRatio << " < " << m_trtRatio );
    return false;
  }
 
 
  if(m_doLRT){
   ATH_MSG_DEBUG( "doLRT: " <<m_doLRT);
   ATH_MSG_DEBUG( "Track d0: " <<m_trkd0);
   float trk_d0 = std::fabs(trkIter->d0());
   if(trk_d0 < m_trkd0){
     ATH_MSG_DEBUG( "Fails d0 cut " <<trk_d0<< " < " <<m_trkd0 );
     return false;
   }
  }
 
 
  ATH_MSG_DEBUG( "Passed selection" );
  return true;
 
}