HiggsAnalysis/HiggsAnalysis-00-01-00/HiggsAnalysis/Vertex.h

//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// 18.08.2007, AUTHOR: OLIVER KORTNER
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#ifndef MPIHiggsAnalysis_VertexH
#define MPIHiggsAnalysis_VertexH

//::::::::::::::::::
//:: CLASS Vertex ::
//::::::::::::::::::


//::::::::::::::::::
//:: HEADER FILES ::
//::::::::::::::::::

// CLHEP //
#include "CLHEP/Vector/ThreeVector.h"

namespace MPIHiggsAnalysis {

class Vertex {

public:
// Constructor //
        Vertex(void);

        Vertex(const Hep3Vector & pos, const Hep3Vector & pos_err,
                const double & chisqu, const unsigned int & ndof,
                const double & E_T, const unsigned int & nb_tracks);

// Methods //
        const Hep3Vector & position(void) const;
        const Hep3Vector & positionError(void) const;
        double chi2(void) const;
        unsigned int numberOfDegreesOfFreedom(void) const;
        double Et(void) const;
        void setEt(const double & Et);

        unsigned int numberOfTracks(void) const;
        void setNumberOfTracks(const unsigned int & nb);


        bool operator < (const Vertex & vertex) const;
        bool operator > (const Vertex & vertex) const;
        bool operator <= (const Vertex & vertex) const;
        bool operator >= (const Vertex & vertex) const;

private:
        Hep3Vector m_pos; // vertex position
        Hep3Vector m_pos_err; // error of the vertex position
        double m_chi2; // chi^2 of the vertex fit
        unsigned int m_ndof; // number of degrees of freedom of the vertex fit
        double m_Et; // sum of the transverse energies of the tracks emerging
                     // from the vertex
        unsigned int m_nb_tracks; // number of tracks emerging from the vertex

};

}

#endif

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