PhotonTruthTool.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
 
/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
// $Id$
 
 
#ifndef EGAMMAD3PDANALYSIS_PHOTONTRUTHTOOL_H
#define EGAMMAD3PDANALYSIS_PHOTONTRUTHTOOL_H
 
 
#include "AthenaBaseComps/AthAlgTool.h"
#include "MCTruthClassifier/IMCTruthClassifier.h"
#include "GaudiKernel/ToolHandle.h"
#include "xAODEgamma/Photon.h"
#include "xAODTruth/TruthParticle.h"
#include "xAODTruth/TruthVertex.h"
#include <string>
 
 
namespace D3PD {
 
class PhotonTruthTool
  : public AthAlgTool
{
public:
  PhotonTruthTool (const std::string& type,
                   const std::string& name,
                   const IInterface* parent);
 

  virtual StatusCode initialize();

  const xAOD::TruthParticle*
  toTruthParticle (const xAOD::Photon& g) const;
 

  bool getMCConv (const xAOD::TruthParticle* truePart,
                  float& RconvMC,
                  float& ZconvMC) const;
 

  bool isPromptPhotonMC (const xAOD::TruthParticle* truePart)  const;
 

  bool isPromptParticleMC (const xAOD::TruthParticle* truePart)  const;
 

  bool isQuarkBremMC (const xAOD::TruthParticle* truePart)  const;
 
 
private:
  bool isFinalStatePhotonMC (const xAOD::TruthParticle* truePart) const;
 
  
  bool isFinalState(const xAOD::TruthParticle* truePart)  const;
 

  const xAOD::TruthParticle*
  getMother(const xAOD::TruthParticle* p) const;
 

  const xAOD::TruthVertex*
  getMotherVert(const xAOD::TruthParticle* p) const;
 

  std::vector<const xAOD::TruthParticle*>
  getMothers(const xAOD::TruthParticle* p) const;
 

  ToolHandle<IMCTruthClassifier> m_classifier;

  float m_zTruthConv;

  float m_rTruthConv;

  bool m_useG4Particles;
};
 
 
} // namespace D3PD
 
 
#endif // EGAMMAD3PDANALYSIS_PHOTONTRUTHTOOL_H