TrkToLeptonPVTool.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
//
// TrkToLeptonPVTool.h - Description
//
/*
   Tool to match a track to a vertex assumed to be a Primary Vertex.
   This PV can be taken elsewhere or obtained with the tool itsels.
   Example:  check compatibility of a track to PV obtained with 2 energetic leptons from Z decay.
   See README fro more details
 
    Author: Vadim Kostyukhin
    e-mail: vadim.kostyukhin@cern.ch
*/
#ifndef TrkToLeptonPVTool_H
#define TrkToLeptonPVTool_H
 
#include <vector>
#include <utility>
#include <memory>
#include "GaudiKernel/ToolHandle.h"
#include "GaudiKernel/ServiceHandle.h"
#include "TrkToLeptonPVTool/ITrkToLeptonPV.h"
#include "TrkVertexFitterInterfaces/IVertexFitter.h"
#include "BeamSpotConditionsData/BeamSpotData.h"
//
 
 
  class TrkToLeptonPVTool : public AthAlgTool, virtual public ITrkToLeptonPV
  {
 
   public:
      TrkToLeptonPVTool(const std::string& type, const std::string& name, const IInterface* parent);
      virtual ~TrkToLeptonPVTool();
 
 
      virtual StatusCode initialize() override;
      virtual StatusCode finalize() override;
 
 
      virtual std::unique_ptr<xAOD::Vertex> matchTrkToPV(const EventContext& ctx, const xAOD::TrackParticle *trk, const xAOD::Vertex * PV, const xAOD::EventInfo * =0) const override final;
      virtual std::unique_ptr<xAOD::Vertex> npartVertex(const EventContext& ctx, const std::vector<const xAOD::TrackParticle*>&, const xAOD::EventInfo * =0) const override final;
//------------------------------------------------------------------------------------------------------------------
// Private data and functions
//
 
   private:
 
    SG::ReadCondHandleKey<InDet::BeamSpotData> m_beamSpotKey { this, "BeamSpotKey", "BeamSpotData", "SG key for beam spot" };
    ToolHandle< Trk::IVertexFitter >    m_fitterSvc{this,"VertexFitter","Trk::TrkVKalVrtFitter/VertexFitterTool","Vertex Fitter tool instance"};
 
 };
 
 
#endif