SumNLeptonPtSelectorAlg.cxx

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

 
#include "EventSelectionAlgorithms/SumNLeptonPtSelectorAlg.h"
 
namespace CP {
 
  SumNLeptonPtSelectorAlg::SumNLeptonPtSelectorAlg(const std::string &name, ISvcLocator *pSvcLocator)
    : EL::AnaAlgorithm(name, pSvcLocator)
  {}
 
  StatusCode SumNLeptonPtSelectorAlg::initialize() {
    ANA_CHECK(m_electronsHandle.initialize(m_systematicsList, SG::AllowEmpty));
    ANA_CHECK(m_electronSelection.initialize(m_systematicsList, m_electronsHandle, SG::AllowEmpty));
    ANA_CHECK(m_muonsHandle.initialize(m_systematicsList, SG::AllowEmpty));
    ANA_CHECK(m_muonSelection.initialize(m_systematicsList, m_muonsHandle, SG::AllowEmpty));
    ANA_CHECK(m_tausHandle.initialize(m_systematicsList, SG::AllowEmpty));
    ANA_CHECK(m_tauSelection.initialize(m_systematicsList, m_tausHandle, 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 SumNLeptonPtSelectorAlg::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 electron container
      const xAOD::IParticleContainer *electrons = nullptr;
      if (m_electronsHandle)
        ANA_CHECK(m_electronsHandle.retrieve(electrons, sys));
      // retrieve the muon container
      const xAOD::IParticleContainer *muons = nullptr;
      if (m_muonsHandle)
        ANA_CHECK(m_muonsHandle.retrieve(muons, sys));
      // retrieve the tau container
      const xAOD::IParticleContainer *taus = nullptr;
      if (m_tausHandle)
        ANA_CHECK(m_tausHandle.retrieve(taus, sys));
 
      // apply the requested selection
      int count = 0;
      if (m_electronsHandle) {
        for (const xAOD::IParticle *el : *electrons) {
          if (!m_electronSelection || m_electronSelection.getBool(*el, sys)) {
            if (m_useDressedProperties) {
              if (acc_pt_dressed(*el) >= m_elptmin) count++;
            } else {
              if (el->pt() >= m_elptmin) count++;
            }
          }
        }
      }
      if (m_muonsHandle) {
        for (const xAOD::IParticle *mu : *muons) {
          if (!m_muonSelection || m_muonSelection.getBool(*mu, sys)) {
              if (m_useDressedProperties) {
                if (acc_pt_dressed(*mu) >= m_muptmin) count++;
              } else {
                if (mu->pt() >= m_muptmin) count++;
            }
          }
        }
      }
      if (m_tausHandle) {
        for (const xAOD::IParticle *tau : *taus) {
          if (!m_tauSelection || m_tauSelection.getBool(*tau, sys)) {
            // for taus dressed properties do not make a big difference
            if (tau->pt() >= m_tauptmin) count++;
          }
        }
      }
 
      // calculate decision
      bool decision = SignEnum::checkValue(m_count.value(), m_signEnum, count);
      m_decoration.setBool(*evtInfo, decision, sys);
    }
    return StatusCode::SUCCESS;
  }
} // namespace CP