1 #ifndef ALICASCADEVERTEXER_H
2 #define ALICASCADEVERTEXER_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
6 //------------------------------------------------------------------
7 // Cascade Vertexer Class
8 // Reads V0s and tracks, writes out cascade vertices
9 // Origin: Christian Kuhn, IReS, Strasbourg, christian.kuhn@ires.in2p3.fr
10 //------------------------------------------------------------------
17 class AliExternalTrackParam;
19 //_____________________________________________________________________________
20 class AliCascadeVertexer : public TObject {
23 void SetCuts(const Double_t cuts[8]);
24 static void SetDefaultCuts(const Double_t cuts[8]);
26 Int_t V0sTracks2CascadeVertices(AliESDEvent *event);
27 Double_t PropagateToDCA(AliESDv0 *vtx,AliExternalTrackParam *trk,Double_t b);
29 void GetCuts(Double_t cuts[8]) const;
30 static void GetDefaultCuts(Double_t cuts[8]);
34 Double_t fgChi2max; // maximal allowed chi2
36 Double_t fgDV0min; // min. allowed V0 impact parameter
38 Double_t fgMassWin; // window around the Lambda mass
40 Double_t fgDBachMin; // min. allowed bachelor impact parameter
42 Double_t fgDCAmax; // maximal allowed DCA between the V0 and the track
44 Double_t fgCPAmin; // minimal allowed cosine of the cascade pointing angle
46 Double_t fgRmin, fgRmax;// max & min radii of the fiducial volume
48 Double_t fChi2max; // maximal allowed chi2
49 Double_t fDV0min; // min. allowed V0 impact parameter
50 Double_t fMassWin; // window around the Lambda mass
51 Double_t fDBachMin; // min. allowed bachelor impact parameter
52 Double_t fDCAmax; // maximal allowed DCA between the V0 and the track
53 Double_t fCPAmin; // minimal allowed cosine of the cascade pointing angle
54 Double_t fRmin, fRmax;// max & min radii of the fiducial volume
56 ClassDef(AliCascadeVertexer,3) // cascade verterxer
59 inline AliCascadeVertexer::AliCascadeVertexer() :
64 fDBachMin(fgDBachMin),
72 inline void AliCascadeVertexer::SetCuts(const Double_t cuts[8]) {
74 fDV0min=cuts[1]; fMassWin=cuts[2]; fDBachMin=cuts[3];
75 fDCAmax=cuts[4]; fCPAmin=cuts[5];
76 fRmin=cuts[6]; fRmax=cuts[7];
79 inline void AliCascadeVertexer::SetDefaultCuts(const Double_t cuts[8]) {
81 fgDV0min=cuts[1]; fgMassWin=cuts[2]; fgDBachMin=cuts[3];
82 fgDCAmax=cuts[4]; fgCPAmin=cuts[5];
83 fgRmin=cuts[6]; fgRmax=cuts[7];
86 inline void AliCascadeVertexer::GetCuts(Double_t cuts[8]) const {
88 cuts[1]=fDV0min; cuts[2]=fMassWin; cuts[3]=fDBachMin;
89 cuts[4]=fDCAmax; cuts[5]=fCPAmin;
90 cuts[6]=fRmin; cuts[7]=fRmax;
93 inline void AliCascadeVertexer::GetDefaultCuts(Double_t cuts[8]) {
95 cuts[1]=fgDV0min; cuts[2]=fgMassWin; cuts[3]=fgDBachMin;
96 cuts[4]=fgDCAmax; cuts[5]=fgCPAmin;
97 cuts[6]=fgRmin; cuts[7]=fgRmax;