MuonSpectrometer/MuonValidation/MuonVertexValidation/src/Utils.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef MSVTXVALIDATIONALGUTILS_H
#define MSVTXVALIDATIONALGUTILS_H
 
#include <vector>
#include <cmath>
 
#include "GaudiKernel/SystemOfUnits.h"
#include "CxxUtils/fpcompare.h"
#include "FourMomUtils/xAODP4Helpers.h"
#include "GeoPrimitives/GeoPrimitives.h"
 
#include "xAODTruth/TruthParticleContainer.h"
#include "xAODTruth/TruthVertexContainer.h"
#include "xAODTracking/VertexContainer.h"
#include "xAODTracking/TrackParticleContainer.h"
#include "xAODJet/JetContainer.h"
 
 
namespace MSVtxValidationAlgUtils {
 
    // particle properties
    double getCTau(const xAOD::TruthVertex *decVtx);
    // takes the fraction of energy deposited in the ECal and computes the log10 of the ratio between the energy deposited in the ECal and HCal
    double getCalEnergyLogRatio(double EMF); 
    bool comparePt(const xAOD::TruthParticle* part1, const xAOD::TruthParticle* part2);
 
    // decay chain utils
    std::vector<const xAOD::TruthParticle*> getChildren(const xAOD::TruthParticle* mother);
    std::vector<const xAOD::TruthParticle*> getGenStableChildren(const xAOD::TruthParticle* mother);
    bool isFromParticle(const xAOD::TruthParticle *ptcl, int pdgId);
    const xAOD::TruthParticle* getMotherLLP(const xAOD::TruthParticle *ptcl, int pdgId_llp);
 
    // vertex isolation
    struct VtxIso {
        double track_mindR{-1.};
        double track_pTsum{-1.};
        double jet_mindR{-1.};
    };  
 
    VtxIso getIso(const xAOD::Vertex *MSVtx, const xAOD::TrackParticleContainer& Tracks, const xAOD::JetContainer& Jets, 
                  double trackIso_pT, double softTrackIso_R, double jetIso_pT, double jetIso_LogRatio);
}
 
#endif // MSVTXVALIDATIONALGUTILS_H