NObjectPtSelectorAlg.cxx

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

 
#include "EventSelectionAlgorithms/NObjectPtSelectorAlg.h"
 
namespace CP {
 
  NObjectPtSelectorAlg::NObjectPtSelectorAlg(const std::string &name, ISvcLocator *pSvcLocator)
    : EL::AnaAlgorithm(name, pSvcLocator)
  {}
 
  StatusCode NObjectPtSelectorAlg::initialize() {
    ANA_CHECK(m_objectsHandle.initialize(m_systematicsList));
    ANA_CHECK(m_objectSelection.initialize(m_systematicsList, m_objectsHandle, SG::AllowEmpty));
    ANA_CHECK(m_eventInfoHandle.initialize(m_systematicsList));
 
    ANA_CHECK(m_preselection.initialize(m_systematicsList, m_eventInfoHandle, SG::AllowEmpty));
    ANA_CHECK(m_decoration.initialize(m_systematicsList, m_eventInfoHandle));
    ANA_CHECK(m_systematicsList.initialize());
 
    m_signEnum = SignEnum::stringToOperator.at( m_sign );
 
    return StatusCode::SUCCESS;
  }
 
  StatusCode NObjectPtSelectorAlg::execute() {
    // accessors
    static const SG::ConstAccessor<float> acc_pt_dressed("pt_dressed");
 
    for (const auto &sys : m_systematicsList.systematicsVector()) {
      // retrieve the EventInfo
      const xAOD::EventInfo *evtInfo = nullptr;
      ANA_CHECK(m_eventInfoHandle.retrieve(evtInfo, sys));
 
      // default-decorate EventInfo
      m_decoration.setBool(*evtInfo, 0, sys);
 
      // check the preselection
      if (m_preselection && !m_preselection.getBool(*evtInfo, sys))
        continue;
 
      // retrieve the object container
      const xAOD::IParticleContainer *objects = nullptr;
      ANA_CHECK(m_objectsHandle.retrieve(objects, sys));
 
      // apply and calculate the decision
      int count = 0;
      for (const xAOD::IParticle *obj : *objects){
        if (!m_objectSelection || m_objectSelection.getBool(*obj, sys)){
          if (m_useDressedProperties) {
            if (acc_pt_dressed(*obj) >= m_ptmin) count++;
          } else {
            if (obj->pt() >= m_ptmin) count++;
          }
        }
      }
 
      bool decision = SignEnum::checkValue(m_count.value(), m_signEnum, count);
      m_decoration.setBool(*evtInfo, decision, sys);
    }
    return StatusCode::SUCCESS;
  }
} // namespace CP