MWTSelector.cxx

Go to the documentation of this file.

/*
   Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 */
 
#include "TopEventSelectionTools/MWTSelector.h"
#include "TopEvent/EventTools.h"
 
namespace top {
  MWTSelector::MWTSelector(const std::string& params) :
    SignValueSelector("MWT", params) {
  }
 
  bool MWTSelector::apply(const top::Event& event) const {
    const xAOD::IParticle* lepton = 0;
 
    if (!event.m_electrons.empty()) lepton = event.m_electrons.front();
    else if (!event.m_muons.empty()) lepton = event.m_muons.front();
    else {
      throw std::runtime_error("MWTSelector::apply: No charged lepton in event");
    }
 
    const double mwt = top::mwt(*lepton, *event.m_met);
    return checkFloat(mwt, value());
  }
 
  bool MWTSelector::applyParticleLevel(const top::ParticleLevelEvent& event) const {
    // If any of the required collections is a nullptr (i.e. has not been
    // loaded) return false.
    if (not event.m_electrons
        or not event.m_muons
        or not event.m_met) {
      return false;
    }
 
    const xAOD::IParticle* lepton = 0;
    if (!event.m_electrons->empty()) lepton = event.m_electrons->front();
    else if (!event.m_muons->empty()) lepton = event.m_muons->front();
    else {
      throw std::runtime_error("MWTSelector::applyParticleLevel: No charged lepton in event");
    }
 
    const double mwt = top::mwt(*lepton, *event.m_met);
    return checkFloat(mwt, value());
  }
}