xAODTruthParticleSlimmerTau.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef GENERATORFILTERS_XAODTRUTHPARTICLESLIMMERTAU_H
#define GENERATORFILTERS_XAODTRUTHPARTICLESLIMMERTAU_H
 
#include "AthenaBaseComps/AthAlgorithm.h"
#include "AthenaBaseComps/AthAlgTool.h"
 
#include "xAODTruth/TruthParticle.h"
#include "xAODTruth/TruthMetaDataContainer.h"
#include "CLHEP/Vector/LorentzVector.h"
#include "GaudiKernel/SystemOfUnits.h"
#include "GaudiKernel/ToolHandle.h"
#include "MCTruthClassifier/IMCTruthClassifier.h"
 
#include <unordered_set>
 

class xAODTruthParticleSlimmerTau : public AthAlgorithm {
public:

  xAODTruthParticleSlimmerTau( const std::string& name, ISvcLocator* svcLoc );
//  xAODTruthParticleSlimmerTau( const std::string& t, const std::string& n, const IInterface* p);
  virtual StatusCode initialize();
  virtual StatusCode execute(const EventContext& ctx);
 
  CLHEP::HepLorentzVector sumDaughterNeutrinos( const xAOD::TruthParticle* tau );
 
private:
  SG::ReadHandleKey<xAOD::TruthParticleContainer> m_xaodTruthParticleContainerName
  {this,"xAODTruthParticleContainerName","TruthParticles","Name of Truth Particle container"};

  SG::WriteHandleKey<xAOD::TruthParticleContainer> m_xaodTruthTauParticleContainerName
    {this, "xAODTruthTauParticleContainerName","TruthTaus","Name of Truth Taus contatiner from the slimmer"};

  DoubleProperty m_tau_pt_selection{this, "tau_pt_selection", 0.001 * Gaudi::Units::GeV}; //in GeV
  DoubleProperty m_abseta_selection{this, "abseta_selection", 10.};

  BooleanProperty m_forceRerun{this, "ForceRerun", false};
 
  PublicToolHandle<IMCTruthClassifier> m_classifier{this, "MCTruthClassifier", "MCTruthClassifier/MCTruthClassifier"};
 
}; // class xAODTruthParticleSlimmerTau
 
 
 
#endif // GENERATORFILTERS_XAODTRUTHPARTICLESLIMMERTAU_H