IJetTruthMatching.h

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
// IJetTruthMatching.h
//   Header file for class IJetTruthMatching
// (c) ATLAS Detector software
// Andreas.Wildauer@cern.ch
 
 
#ifndef PARTICLEJETTOOLS_IJETTRUTHMATCHING_H
#define PARTICLEJETTOOLS_IJETTRUTHMATCHING_H
 
// Gaudi
#include "AsgTools/IAsgTool.h"
#include "xAODJet/Jet.h"
#include <map>
#include <string>
 
class Jet;
 
namespace Analysis
{
 
    // static const InterfaceID IID_IJetTruthMatching("IJetTruthMatching", 1, 0);
 
    class IJetTruthMatching : virtual public asg::IAsgTool {
        ASG_TOOL_INTERFACE(IJetTruthMatching)
        public:
 
            struct MatchInfo {
              // Predefined name to label the jets passing the matching.
              int jetLabel = 0;
 
              // Number of MC Events in the McEventCollection
              int NEventInCollection = 0;
 
              // Barcode of the matched parton (to be able to find the parton in the McEventColl)
              int barcode = 0;
 
              // pdg code of the parton/baryon the jet has been matched to (which was closest)
              int pdg = 0;
 
              // Keep track of distances to quarks.
              std::map<std::string, double> distanceToQuarks;
 
              // Position of the lowest lying B hadron vertex decay
              //Eigen::Vector3d BDecVtx;
              //int Bpdg
 
              double deltaRMinTo (const std::string& key) const
              {
                auto it = distanceToQuarks.find (key);
                if (it != distanceToQuarks.end())
                  return it->second;
                return 9999;
              }
            };
 
            virtual ~IJetTruthMatching(){};
 
            // static const InterfaceID& interfaceID() { return IID_IJetTruthMatching; };
 
            virtual bool matchJet(const xAOD::Jet& myJet,
                                  MatchInfo* info = nullptr) const = 0;
            //virtual bool matchJet(const Jet& myJet) = 0;
 
            virtual void printParameterSettings() const = 0;
    };
 
} // end of namespace
 
#endif // PARTICLEJETTOOLS_IJETTRUTHMATCHING_H