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Conversion.h

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#ifndef EgammaCandidates_Conversion_h
#define EgammaCandidates_Conversion_h

#include "DataFormats/TrackReco/interface/TrackFwd.h" 
#include "DataFormats/GeometryVector/interface/GlobalVector.h"
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include "DataFormats/VertexReco/interface/Vertex.h"
#include "DataFormats/CaloRecHit/interface/CaloCluster.h"
#include "DataFormats/CaloRecHit/interface/CaloClusterFwd.h"


namespace reco {
    class Conversion  {
  public:

    // Default constructor
    Conversion() {}
   
    Conversion( const reco::CaloClusterPtrVector clu, 
                const std::vector<reco::TrackRef> tr, 
                const std::vector<math::XYZPoint> trackPositionAtEcal , 
                const reco::Vertex  &  convVtx,
                const std::vector<reco::CaloClusterPtr> & matchingBC);




    virtual ~Conversion();
    Conversion * clone() const;
    reco::CaloClusterPtrVector caloCluster() const ;
    std::vector<reco::TrackRef> tracks() const ; 
    const reco::Vertex & conversionVertex() const  { return theConversionVertex_ ; }
    const std::vector<math::XYZPoint> & ecalImpactPosition() const  {return thePositionAtEcal_;}
    //  pair of BC matching a posteriori the tracks
    const std::vector<reco::CaloClusterPtr>&  bcMatchingWithTracks() const { return theMatchingBCs_;}
    bool isConverted() const;
    unsigned int nTracks() const {return  tracks().size(); }
    double pairInvariantMass() const;
    double pairCotThetaSeparation() const;
    GlobalVector  pairMomentum() const;
    double EoverP() const;
    double zOfPrimaryVertexFromTracks() const;




  private:

    reco::CaloClusterPtrVector caloCluster_;
    std::vector<reco::TrackRef>  tracks_;
    std::vector<math::XYZPoint>  thePositionAtEcal_;
    reco::Vertex theConversionVertex_;
    std::vector<reco::CaloClusterPtr> theMatchingBCs_;
    


  };
  
}

#endif

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