METComponent.h

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/*
 * Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 */
 
/******************************************************************************
 * @package Trigger/TrigAlgorithms/TrigEFMissingET
 * @class   METComponent
 *
 * @brief Helper class to build up MET values
 * @author Jon Burr
 *****************************************************************************/
 
#ifndef TRIGEFMISSINGET_METCOMPONENT_H
#define TRIGEFMISSINGET_METCOMPONENT_H
 
#include "xAODTrigMissingET/TrigMissingET.h"
#include "TrigEFMissingET/SignedKinematics.h"
#include <TLorentzVector.h>
#include <ostream>
 
namespace HLT { namespace MET {
  class METComponent {
  public:
    METComponent() {}
    METComponent(const xAOD::TrigMissingET& met);
    METComponent(std::size_t idx, const xAOD::TrigMissingET& met);
    float mpx{0.};
    float mpy{0.};
    float mpz{0.};
    float met() const;
    float magnitude() const;
    float phi() const;
    float eta() const;

    float sumE{0.};
    float sumEt{0.};
    int status{0};

    friend METComponent operator+(const METComponent& lhs, const METComponent& rhs);
    METComponent& operator+=(const METComponent& other);
    METComponent& operator+=(const TLorentzVector& otherP4);
    METComponent& operator+=(const SignedKinematics& kin);

    void fillMET(xAOD::TrigMissingET& met) const;
    void fillMETComponent(std::size_t idx, xAOD::TrigMissingET& met) const;
  }; //> end class METComponent
 
  std::ostream& operator<<(std::ostream& os, const METComponent& component);
 
} } //> end namespace HLT::MET
#endif //> !TRIGEFMISSINGET_METCOMPONENT_H