JetNGhostSelectorAlg.h

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/*
   Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/

 
#ifndef EVENT_SELECTOR_JETNGHOSTSELECTORALG_H
#define EVENT_SELECTOR_JETNGHOSTSELECTORALG_H
 
// Algorithm includes
#include <AnaAlgorithm/AnaAlgorithm.h>
#include <AsgTools/PropertyWrapper.h>
#include <SystematicsHandles/SysReadHandle.h>
#include <SelectionHelpers/SysReadSelectionHandle.h>
#include <SelectionHelpers/SysWriteSelectionHandle.h>
 
// Framework includes
#include <xAODJet/JetContainer.h>
#include <xAODEventInfo/EventInfo.h>
 
#include <EventSelectionAlgorithms/SignEnums.h>
 
namespace CP {

 
  class JetNGhostSelectorAlg final : public EL::AnaAlgorithm {

    public:
      JetNGhostSelectorAlg(const std::string &name, ISvcLocator *pSvcLocator);
      virtual StatusCode initialize() override;
      virtual StatusCode execute(const EventContext& ctx) override;
 
    private:

      Gaudi::Property<float> m_ptmin {this, "minPt", 0., "minimum pT (in MeV)"};

      Gaudi::Property<std::string> m_sign {this, "sign", "SetMe", "comparison sign to use"};

      Gaudi::Property<int> m_count {this, "count", 0, "count value"};

      Gaudi::Property<std::string> m_ghost {
         this, "ghost", "", "name of the ghost decoration to look up for positive object counts"
      };

      Gaudi::Property<std::string> m_veto {
         this, "veto", "", "name of the ghost decoration to look up for negative object counts"
      };

      SignEnum::ComparisonOperator m_signEnum{};

      CP::SysListHandle m_systematicsList {this};

      CP::SysReadHandle<xAOD::JetContainer> m_jetsHandle {
        this, "jets", "", "the particle container to use"
      };

      CP::SysReadSelectionHandle m_jetSelection {
        this, "jetSelection", "", "the selection on the input particles"
      };

      CP::SysReadHandle<xAOD::EventInfo> m_eventInfoHandle {
        this, "eventInfo", "EventInfo", "the EventInfo container to read selection decisions from"
      };

      CP::SysReadSelectionHandle m_preselection {
        this, "eventPreselection", "SetMe", "name of the preselection to check before applying this one"
      };
    
      CP::SysWriteSelectionHandle m_decoration {
        this, "decorationName", "SetMe", "decoration name for the NGhosts selector"
      };

      std::unique_ptr<SG::ConstAccessor<int>> m_ghostAcc{};
      std::unique_ptr<SG::ConstAccessor<int>> m_vetoAcc{};
      bool m_doVeto{false};
  }; // class
} // namespace CP
 
#endif // EVENT_SELECTOR_JETNGHOSTSELECTORALG_H