TruthPVzRelativeToBeamspotAlg.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef TRUTH_PVZ_RELATIVE_TO_BEAMSPOT_ALG_HH
#define TRUTH_PVZ_RELATIVE_TO_BEAMSPOT_ALG_HH
 
// FrameWork includes
#include "AthenaBaseComps/AthReentrantAlgorithm.h"
 
// Containers
#include "xAODBase/IParticleContainer.h"
#include "xAODEventInfo/EventInfo.h"
 
// Read and write handle keys
#include "StoreGate/ReadHandleKey.h"
#include "StoreGate/ReadDecorHandleKey.h"
#include "StoreGate/WriteDecorHandleKey.h"
 
namespace FlavorTagDiscriminants {
 
  class TruthPVzRelativeToBeamspotAlg: public AthReentrantAlgorithm {
 
    public:
      TruthPVzRelativeToBeamspotAlg(const std::string& name,
                                    ISvcLocator* pSvcLocator);
 
      virtual StatusCode initialize() override;
      virtual StatusCode execute(const EventContext& ctx) const override;
 
    private:
      SG::ReadHandleKey<xAOD::IParticleContainer> m_jetCollectionKey {
        this, "jetContainer", "AntiKt4EMPFlowJets", "Key for the jet collection"};
 
      SG::ReadDecorHandleKey<xAOD::IParticleContainer> m_truthPVzKey {
        this, "truthPVzDecor", m_jetCollectionKey, "TruthJetPVz",
        "Jet decoration holding the truth primary-vertex z, in detector coordinates"};
 
      SG::WriteDecorHandleKey<xAOD::IParticleContainer> m_outputKey {
        this, "truthPVzRelToBeamspotDecor", m_jetCollectionKey, "TruthJetPVzRelToBeamspot",
        "Key for the output truth primary-vertex z, relative to the beamspot"};
 
      SG::ReadHandleKey<xAOD::EventInfo> m_eventInfoKey {
        this, "eventInfo", "EventInfo", "Key for EventInfo, providing the beamspot position"};
  };
}
 
#endif