SysTruthWeightAlg.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/

 
#ifndef ASG_ANALYSIS_ALGORITHMS__SYS_TRUTH_WEIGHT_ALG_H
#define ASG_ANALYSIS_ALGORITHMS__SYS_TRUTH_WEIGHT_ALG_H
 
#include <AnaAlgorithm/AnaAlgorithm.h>
#include <AsgDataHandles/ReadHandleKey.h>
#include <PMGAnalysisInterfaces/ISysTruthWeightTool.h>
#include <SystematicsHandles/SysListHandle.h>
#include <SystematicsHandles/SysReadHandle.h>
#include <SystematicsHandles/SysWriteDecorHandle.h>
#include <xAODEventInfo/EventInfo.h>
#include <xAODTruth/TruthParticleContainer.h>
 
namespace CP
{
  class SysTruthWeightAlg final : public EL::AnaAlgorithm
  {
  public:
    using EL::AnaAlgorithm::AnaAlgorithm;
 
  public:
    StatusCode initialize() override;
 
  public:
    StatusCode execute(const EventContext& ctx) override;

  private:
    SG::ReadHandleKey<xAOD::TruthParticleContainer> m_truthParticleContainer{
      this, "TruthParticleContainer", "TruthParticles", "the truth particle container to use for the calculation"};

  private:
    ToolHandle<PMGTools::ISysTruthWeightTool> m_sysTruthWeightTool{
      this, "sysTruthWeightTool", "PMGTools::PMGHFProductionFractionTool", "the systematic truth weight tool"};

  private:
    SysListHandle m_systematicsList{this};

  private:
    SysReadHandle<xAOD::EventInfo> m_eventInfoHandle{
      this, "eventInfo", "EventInfo", "the event info object to run on"};

  private:
    SysWriteDecorHandle<float> m_decoration{
      this, "decoration", "", "the decoration for the truth weights"};
  };
}  // namespace CP
 
#endif