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a9a2d814 | 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 */ | |
5 | ||
6 | //------------------------------------------------------------------ | |
7 | // Cascade Vertexer Class | |
8 | // | |
9 | // Origin: Christian Kuhn, IReS, Strasbourg, christian.kuhn@ires.in2p3.fr | |
10 | //------------------------------------------------------------------ | |
11 | ||
12 | #include "TObject.h" | |
13 | ||
14 | class TFile; | |
15 | class AliITStrackV2; | |
16 | class AliV0vertex; | |
17 | ||
18 | //_____________________________________________________________________________ | |
19 | class AliCascadeVertexer : public TObject { | |
20 | public: | |
21 | AliCascadeVertexer(); | |
22 | AliCascadeVertexer(const Double_t cuts[8]); | |
23 | void SetCuts(const Double_t cuts[8]); | |
24 | ||
25 | Int_t V0sTracks2CascadeVertices(const TFile *in, TFile *out); | |
26 | Double_t PropagateToDCA(AliV0vertex *vtx, AliITStrackV2 *trk); | |
27 | ||
28 | void GetCuts(Double_t cuts[8]) const; | |
29 | ||
30 | private: | |
31 | Double_t fChi2max; // maximal allowed chi2 | |
32 | Double_t fDV0min; // min. allowed V0 impact parameter | |
33 | Double_t fMassWin; // window around the Lambda mass | |
34 | Double_t fDBachMin; // min. allowed bachelor impact parameter | |
35 | Double_t fDCAmax; // maximal allowed DCA between the V0 and the track | |
36 | Double_t fCPAmax; // maximal allowed cosine of the cascade pointing angle | |
37 | Double_t fRmin, fRmax;// max & min radii of the fiducial volume | |
38 | ||
39 | ClassDef(AliCascadeVertexer,1) // cascade verterxer | |
40 | }; | |
41 | ||
42 | inline AliCascadeVertexer::AliCascadeVertexer() { | |
43 | fChi2max=33.; | |
44 | fDV0min=0.015; fMassWin=0.05; fDBachMin=0.015; | |
45 | fDCAmax=0.01; fCPAmax=0.025; | |
46 | fRmin=0.5; fRmax=2.5; | |
47 | } | |
48 | ||
49 | inline AliCascadeVertexer::AliCascadeVertexer(const Double_t cuts[8]) { | |
50 | fChi2max=cuts[0]; | |
51 | fDV0min=cuts[1]; fMassWin=cuts[2]; fDBachMin=cuts[3]; | |
52 | fDCAmax=cuts[4]; fCPAmax=cuts[5]; | |
53 | fRmin=cuts[6]; fRmax=cuts[7]; | |
54 | } | |
55 | ||
56 | inline void AliCascadeVertexer::SetCuts(const Double_t cuts[8]) { | |
57 | fChi2max=cuts[0]; | |
58 | fDV0min=cuts[1]; fMassWin=cuts[2]; fDBachMin=cuts[3]; | |
59 | fDCAmax=cuts[4]; fCPAmax=cuts[5]; | |
60 | fRmin=cuts[6]; fRmax=cuts[7]; | |
61 | } | |
62 | ||
63 | inline void AliCascadeVertexer::GetCuts(Double_t cuts[8]) const { | |
64 | cuts[0]=fChi2max; | |
65 | cuts[1]=fDV0min; cuts[2]=fMassWin; cuts[3]=fDBachMin; | |
66 | cuts[4]=fDCAmax; cuts[5]=fCPAmax; | |
67 | cuts[6]=fRmin; cuts[7]=fRmax; | |
68 | } | |
69 | ||
70 | #endif | |
71 | ||
72 |