JSFZVTOP3

class JSFZVTOP3 : public JSFVirtualVertexing

    public:

                      JSFZVTOP3()
              virtual ~JSFZVTOP3()
                 void CalculateMSPTM()
       static TClass* Class()
                 void DebugPrint()
              Float_t GetChisquare()
              Float_t GetDecayLength()
              Float_t GetDecayLength0()
              Float_t GetMSPT()
              Float_t GetMSPTM()
                Int_t GetNISO()
                Int_t GetNsec()
                Int_t GetNsecOriginalVertex()
                Int_t GetNTRK()
                Int_t GetNVRT()
              Float_t GetProbability()
              Float_t GetProbability2()
              Float_t GetProbabilityOriginalVertex()
              Float_t GetPTM2()
              Float_t GetSecondaryMass()
              Float_t GetSecondaryMomentum()
         static Int_t GUFLD(Float_t* pos, Float_t* b0)
      virtual TClass* IsA() const
         virtual void MakeVertices(TObjArray* tracks = 0)
         virtual void ShowMembers(TMemberInspector& insp, char* parent)
         virtual void Streamer(TBuffer& b)
                 void StreamerNVirtual(TBuffer& b)
         static Int_t ZXFIT(Int_t* mode, Int_t* jj, Int_t* vid, Float_t* vpos, Float_t* vpossg, Float_t* chisq, Float_t* xvtx, Float_t* xvtxsg, Float_t* chisqtk, Float_t** pxyz, Int_t* ier)
          static void ZXSWIM(Int_t* mode, Float_t* ok, Float_t* vpos, Int_t* id)

Data Members

    protected:

                     Int_t fNTRK               number of input tracks.
                     Int_t fNVRT               number of found vertices.
                     Int_t fNISO               number of tracks left isolated.
                   Float_t fPTKS[4]            X,Y,Z,magnitude ot summed track momenta
                   Float_t fIPX[3]             XYZ location of IP
                   Float_t fAXI[3]             Ghost axis direction
                   Float_t fGWID               Fitted ghost track gaussian width /um
                   Float_t fMSPTM              
                   Float_t fMSPT               
                   Float_t fPTM2               
                   Float_t fChisq              
                   Float_t fProb               
                   Float_t fProb2              Vfit probability of first fit.
                   Float_t fProbo              Probability of original vertex
                     Int_t fNseco              
                     Int_t fNsec               
                   Float_t fDecayLength        
                   Float_t fDecayLength0       
                   Float_t fSecondaryMass      
                   Float_t fSecondaryMomentum  
      static JSFCDCTrack** fTrackPointers      

Class Description

  Do topological vertex finding.

$Id: JSFZVTOP3.cxx,v 1.4 2003/05/25 10:44:51 miyamoto Exp $

  Does vertex fitting...
(Inputs)
  mode ;
  jj   ; Number of tracks
  vid[]; An array of track id whose vertex is fitted.
  vpos[3] : Initial vertex position
  vpossg[3] : error of vertex position.
(Output)
  chisq   : Chisq of vertex fit
  xvtx(3) : Fitted vertex (x,y,z)
  xvtxsq(6) : Error matrix of vertex position
  chisqtk() : Chi-square of each track.
  pxyz[][3] : three momentum at the vertex

 Return magnetic field.

 Do vertexing using ZVTOP Algorithm
(Input)
  tracks : Pointers to JSFCDCTrack class which belongs to this track
(Output)
  Results are saved as data member of the class.

 Print a vertexing result.

Inline Functions

            Float_t GetMSPTM()
            Float_t GetMSPT()
            Float_t GetPTM2()
              Int_t GetNVRT()
              Int_t GetNTRK()
              Int_t GetNISO()
            Float_t GetChisquare()
            Float_t GetProbability()
            Float_t GetProbability2()
              Int_t GetNsec()
            Float_t GetDecayLength()
            Float_t GetDecayLength0()
            Float_t GetSecondaryMass()
            Float_t GetSecondaryMomentum()
            Float_t GetProbabilityOriginalVertex()
              Int_t GetNsecOriginalVertex()
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)