DStarSelectionTool.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
//==================================================
// Selection of D*+ -> pi+ + D0
//==================================================
 
#ifndef DERIVATIONFRAMEWORK_DStarSelectionTool_H
#define DERIVATIONFRAMEWORK_DStarSelectionTool_H
 
#include <vector>
#include <string>
 
#include "TLorentzVector.h"
 
#include "AthenaBaseComps/AthAlgTool.h"
#include "DerivationFrameworkInterfaces/IAugmentationTool.h"
 
#include "xAODTracking/VertexContainer.h"
#include "xAODTracking/TrackParticleContainer.h"
#include "xAODTracking/TrackParticle.h"
 
#include "StoreGate/ReadHandleKey.h"
#include "StoreGate/WriteDecorHandleKey.h"
 
#include <AsgTools/PropertyWrapper.h>
 
 
 
namespace DerivationFramework {
 
  class DStarSelectionTool : public extends<AthAlgTool,IAugmentationTool> {
    
    public: 
    using base_class::base_class;
    
    StatusCode initialize() override;
    
    virtual StatusCode addBranches(const EventContext& ctx) const override;
    
  private:
    SG::ReadHandleKey<xAOD::VertexContainer> m_inputVtxContainerName{this, "InputVtxContainerName", ""};
    Gaudi::Property<double> m_deltaMassMax{this,"DeltaMassMax" ,200.,"invariant mass difference range"};
    SG::ReadHandleKey<xAOD::TrackParticleContainer> m_trackKey{this, "TrackContainer", "InDetTrackParticles"};
    SG::WriteDecorHandleKey<xAOD::TrackParticleContainer> m_trackDecoKey{ this, "PassTrackDstarKey", m_trackKey, "trackPassDstar"};
    SG::WriteDecorHandleKey<xAOD::VertexContainer> m_vertexDecoKey{ this, "PassVertexDstarKey", m_inputVtxContainerName, "passed_Dstar"};
    
    const double m_pionMass = ParticleConstants::chargedPionMassInMeV;
    const double m_kaonMass = ParticleConstants::chargedKaonMassInMeV;
    std::string m_hypoName; 
  }; 
}
 
#endif // DERIVATIONFRAMEWORK_DStarSelectionTool_H