JetForwardPFlowJvtTool.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
 
// JetForwardPFlowJvtTool.h
// Header file for class JetForwardPFlowJvtTool
// Author: Anastasia Kotsokechagia <anastasia.kotsokechagia@cern.ch>
 
// Tool for calculating fjvt values for pflow jets. 
// Short describtion of the tool;
//   First central PU jets are built per vertex.
//   Reconstructed calibrated jets are then used to calculate the per vertex missing momentum (miss-mom). 
//   The per vertex missing momentum is defined as: The vector some of the calibrated jet momenta (for jets with pt>20GeV && Rpt>0.1 wrt to the vertex) + tracks assosiated to the vertex (otherwise). 
//   PU Jets closeby (dR<0.3) to a HS jet are not considered.
//   The fJVT value for every forward jet (fj) of the event is then calculated choosing the vertex with the largest negative miss-mom projection on the fj.  
//   User action: After initializing the tool the user has to call the modify(xAOD::JetContainer& jetCont) function. Argument in this fuction is the PFlow jet container of the event. 
//   The fjvt value for every forward jet of the container is then calculated and can be retrieved.
    //Parameters
    // m_orLabel:  ""  
    // m_jetsName : "Container name for the output reconstructed PU jets " 
    // m_tightOP: "If true a tight fjvt threshold value is applied" 
    // m_outLabelFjvt: "Decorator for passing fJVT threshold (tight or loose)"                            
    // m_jetchargedp4: "Name of the jet charged momentum 4-vector" 
    // m_etaThresh: "Maximum eta value for considering a jet as central" 
    // m_forwardMinPt: "Minimum forward jet pt" 
    // m_forwardMaxPt: "Maximum forward jet pt. If -1 no threshold is applied" 
    // m_centerMinPt: "Minimum central jet pt"  
    // m_centerMaxPt: "Maximum central jet pt. If -1 no threshold is applied" 
    // m_pvind: "Hard-Scatter primary vertex index of the event. If -1 it's automatically retrieved from the event"
    // m_rptCut: "Rpt cut value for central PU jets contributing in the missing momentum calculation" 
    // m_jvtCut: "JVT threshold value for considering a central PU jet as HS" 
    // m_dzCut: "Dz=z-z0 cut value for pfo objects participating in the HS vertex jet reco" 
    // m_vertices: "Number of vertices for which the missing momentum is calculated"
    // m_maxRap: "Maximum rapidity value in fastjet::AreaDefinition" 
    // m_neutMaxRap: "Maximum rapidity value for neutral pfos participating in jet reco"
    // m_weight: "PFO weight value"
    // m_pfoToolName: "Name of PFO retriever tool"
    // m_wpfoToolName: "Name of PFO weighting tool"
    // m_pfoJESName: "Name of jet calibration tool"
    // m_jetAlgo: "Jet calibration collection name"
    // m_calibconfig: "Calibration config for PFlow jets, need to be updated with latest one"
    // m_calibSeq: "Calibration sequence to be applied"
    // m_calibArea: "Calibration area" 
    // m_isdata: "True if data"
 
 
#ifndef FORWARDPFLOWJVTTOOL_JVT_FORWARDPFLOWJVTTOOL_H
#define FORWARDPFLOWJVTTOOL_JVT_FORWARDPFLOWJVTTOOL_H 1
 
// STL includes
#include <string>
 
// FrameWork includes
#include "AsgTools/ToolHandle.h"
#include "AsgTools/AsgTool.h"
#include "AsgTools/PropertyWrapper.h"
#include "JetInterface/IJetDecorator.h"
#include "JetEDM/TrackVertexAssociation.h"
#include "xAODJet/JetContainer.h"
#include "xAODJet/JetAuxContainer.h"
#include "xAODPFlow/FlowElementContainer.h"
#include "xAODEventInfo/EventInfo.h"
 
 
#include "AsgDataHandles/ReadDecorHandleKey.h"
#include "AsgDataHandles/ReadDecorHandle.h"
#include "AsgDataHandles/WriteDecorHandleKey.h"
#include "AsgDataHandles/WriteDecorHandle.h"
 
// Pflow / FE tools 
#include "PFlowUtils/FEHelpers.h"
#include "PFlowUtils/IWeightPFOTool.h"
#include "PFlowUtils/WeightPFOTool.h"
#include "JetCalibTools/IJetCalibrationTool.h"
 
#include "AsgTools/ToolHandle.h"
#include "JetCalibTools/IJetCalibrationTool.h"
 
namespace pflow {
  struct puJets {
    std::shared_ptr<xAOD::JetContainer> jetCont;
    std::shared_ptr<xAOD::JetAuxContainer> jetAuxCont;
  };
}
 
  class JetForwardPFlowJvtTool
  : public asg::AsgTool,
    virtual public IJetDecorator{
    ASG_TOOL_CLASS(JetForwardPFlowJvtTool,IJetDecorator)
 
    
    // Public methods:
  public:

    JetForwardPFlowJvtTool(const std::string& name);

    virtual ~JetForwardPFlowJvtTool();
 
    virtual StatusCode  initialize() override;
 
 
    virtual StatusCode decorate(const xAOD::JetContainer& jetCont) const override;
 
    float getFJVT(const xAOD::Jet *jet,const std::vector<TVector2>& pileupMomenta) const;
    bool isForwardJet(const xAOD::Jet *jet) const;
    bool isCentralJet(const xAOD::Jet *jet) const;
 
    StatusCode tagTruth(const xAOD::JetContainer *jets,const xAOD::JetContainer *truthJets);
    virtual std::vector<TVector2> calculateVertexMomenta(const xAOD::JetContainer *jets,int pvind, int vertices) const;
    pflow::puJets buildPFlowPUjets(const xAOD::Vertex &vx) const;
    bool hasCloseByHSjet(const xAOD::Jet *jet, const xAOD::JetContainer *pjets ) const;
    double getRpt(const xAOD::Jet *jet) const;
    fastjet::PseudoJet pfoToPseudoJet(const xAOD::PFO* pfo, const CP::PFO_JetMETConfig_charge& theCharge, const xAOD::Vertex *vx) const;
    fastjet::PseudoJet feToPseudoJet(const xAOD::FlowElement* fe, const CP::PFO_JetMETConfig_charge& theCharge, const xAOD::Vertex *vx) const;
    std::size_t getPV() const;
 
  protected:
 
    SG::ReadHandleKey<jet::TrackVertexAssociation> m_tvaKey{this, "TrackVertexAssociation", "", "Input track-vertex association"};
    Gaudi::Property<std::string> m_jetContainerName{this, "JetContainer", "", "SG key for the input jet container"};
    Gaudi::Property<std::string> m_jetsName{this, "jetsName", "AntiKt4PUPFlowJets", "Container name for the output reconstructed PU jets"};
    Gaudi::Property<std::string> m_jetchargedp4{this, "jetchargedp4", "JetChargedScaleMomentum", "Name of the jet charged momentum 4-vector"};
    
    Gaudi::Property<bool> m_isdata{this, "isdata", false, "True if data"};
    Gaudi::Property<int> m_pvind{this, "pvind", -1, "Hard-Scatter primary vertex index of the event. If -1 it will be automatically retrieved from the event"};
    Gaudi::Property<int> m_vertices{this, "vertices", 10, "Number of vertices for which the missing momentum is calculated"};
    Gaudi::Property<bool> m_includePV{this, "includePV", false, "Flag to include jets and tracks associated to PV in the calculation"};
    Gaudi::Property<double> m_etaThresh{this, "etaThresh", 2.5, "Maximum eta value for considering a jet as central"};
    Gaudi::Property<double> m_forwardMinPt{this, "forwardMinPt", 18e3, "Minimum forward jet pt"};
    Gaudi::Property<double> m_forwardMaxPt{this, "forwardMaxPt", -1, "Maximum forward jet pt. If -1 no threshold is applied"};
    Gaudi::Property<double> m_centerMinPt{this, "centralMinPt", 20e3, "Minimum central jet pt"};
    Gaudi::Property<double> m_centerMaxPt{this, "centralMaxPt", -1, "Maximum central jet pt. If -1 no threshold is applied"};
    Gaudi::Property<double> m_fjvtThresh{this, "fjvtThresh", 15e3, "fjvt threshold value"};
    Gaudi::Property<double> m_rptCut{this, "rptCut", 0.1, "Rpt cut value for central PU jets contributing in the missing momentum calculation"};
    Gaudi::Property<double> m_jvtCut{this, "jvtCut", 0.2, "JVT threshold value for considering a central PU jet as HS"};
    Gaudi::Property<double> m_dzCut{this, "dzCut", 2.0, "Dz=z=-z0 cut for pfo objects participating in the HS vertex jet reco"};
    Gaudi::Property<double> m_maxRap{this, "maxRap", 2.5, "Maximum rapidity value in fastjet::AreaDefinition"};
    Gaudi::Property<double> m_neutMaxRap{this, "neutMaxRap", 2.5, "Maximum rapidity value for neutral pfos participating in jet reco"};
    Gaudi::Property<float>  m_weight{this, "weight", 0, "PFO weight value"};
    Gaudi::Property<bool> m_tightOP{this, "tightOP", false, "If true a tight fjvt threshold value is applied"};
 
    // not used?
    //Gaudi::Property<std::string> m_jvtMomentName{"jvtMomentName", "", ""};
    //Gaudi::Property<double> m_centerJvtThresh{"", 0, ""};
 
    SG::ReadHandleKey<xAOD::VertexContainer> m_vxContKey{this, "verticesName", "PrimaryVertices", "Container name of vertices to be retrieved"};
    SG::ReadHandleKey<xAOD::PFOContainer> m_PFOKey{this, "PFOName", "CHSParticleFlowObjects", "SG Key for CHS PFO Container"};
    SG::ReadHandleKey<xAOD::FlowElementContainer> m_FEKey{this, "FEName", "", "SG Key for CHS FlowElement Container (overrides PFO if not empty)"};
    SG::ReadHandleKey<xAOD::EventInfo> m_eventInfoKey{"EventInfo"};
 
    SG::ReadDecorHandleKey<xAOD::JetContainer> m_passJvtKey{this, "passJvtName", "NNJvtPass", "SG key for output pass-JVT decoration"};
    SG::ReadDecorHandleKey<xAOD::PFO> m_orKey{this, "ORName", "", "OR label"};
    SG::ReadDecorHandleKey<xAOD::FlowElement> m_orFEKey{this, "ORNameFE", "", "OR label"};
 
    SG::WriteDecorHandleKey<xAOD::JetContainer> m_fjvtKey{this, "FjvtName", "passOnlyFJVT", "Decorator for passing fJVT threshold (tight or loose)"};
    SG::WriteDecorHandleKey<xAOD::JetContainer> m_fjvtRawKey{this, "FjvtRawName", "fJvt", "Decorator for raw fJVT variable"};
    SG::WriteDecorHandleKey<xAOD::JetContainer> m_isHSKey{this, "isHSName", "isJVTHS", "SG key for output isJVTHS decoration"};
    SG::WriteDecorHandleKey<xAOD::JetContainer> m_isPUKey{this, "isPUName", "isJvtPU", "SG key for output isJVTPU decoration"};
    
    ToolHandle<CP::WeightPFOTool> m_wpfotool{this,"WeightPFOTool", "", "Weight PFO tool name"};
    ToolHandle<IJetCalibrationTool> m_pfoJES{this,"JetCalibrationTool", "", "Jet calibration tool name"};
 
    Gaudi::Property<bool> m_suppressInputDependence{this, "SuppressInputDependence", false};
 
  };
#endif //> !FORWARDJVTTOOL_JVT_FORWARDJVTTOOL_H