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7f6ddf58 | 1 | #ifndef ALIV0VERTEXER_H |
2 | #define ALIV0VERTEXER_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | //------------------------------------------------------------------ | |
7 | // V0 Vertexer Class | |
18856a77 | 8 | // reads tracks writes out V0 vertices |
7f6ddf58 | 9 | // Origin: Iouri Belikov, IReS, Strasbourg, Jouri.Belikov@cern.ch |
10 | //------------------------------------------------------------------ | |
11 | ||
12 | #include "TObject.h" | |
13 | ||
566abf75 | 14 | class TTree; |
e23730c7 | 15 | class AliESD; |
7f6ddf58 | 16 | |
17 | //_____________________________________________________________________________ | |
18 | class AliV0vertexer : public TObject { | |
19 | public: | |
20 | AliV0vertexer(); | |
21 | AliV0vertexer(const Double_t cuts[7]); | |
22 | void SetCuts(const Double_t cuts[7]); | |
5d390eda | 23 | void SetVertex(Double_t *vtx) { fX=vtx[0]; fY=vtx[1]; fZ=vtx[2]; } |
7f6ddf58 | 24 | |
e23730c7 | 25 | Int_t Tracks2V0vertices(AliESD *event); |
26 | ||
7f6ddf58 | 27 | void GetCuts(Double_t cuts[7]) const; |
18856a77 | 28 | void GetVertex(Double_t *vtx) const { vtx[0]=fX; vtx[1]=fY; vtx[2]=fZ; } |
7f6ddf58 | 29 | |
30 | private: | |
5d390eda | 31 | |
7f6ddf58 | 32 | Double_t fChi2max; // maximal allowed chi2 |
33 | Double_t fDNmin; // min. allowed negative daughter's impact parameter | |
34 | Double_t fDPmin; // min. allowed positive daughter's impact parameter | |
35 | Double_t fDCAmax; // maximal allowed DCA between the daughter tracks | |
36 | Double_t fCPAmax; // maximal allowed cosine of V0's pointing angle | |
37 | Double_t fRmin, fRmax; // max & min radii of the fiducial volume | |
38 | ||
5d390eda | 39 | Double_t fX; // X-coordinate of the primary vertex |
40 | Double_t fY; // Y-coordinate of the primary vertex | |
41 | Double_t fZ; // Z-coordinate of the primary vertex | |
42 | ||
7f6ddf58 | 43 | ClassDef(AliV0vertexer,1) // V0 verterxer |
44 | }; | |
45 | ||
46 | inline AliV0vertexer::AliV0vertexer() { | |
5d390eda | 47 | fChi2max=33.; |
48 | fDNmin=0.015; fDPmin=0.015; | |
49 | fDCAmax=0.01; fCPAmax=0.025; | |
50 | fRmin=0.5; fRmax=2.5; | |
51 | fX=fY=fZ=0.; | |
7f6ddf58 | 52 | } |
53 | ||
54 | inline AliV0vertexer::AliV0vertexer(const Double_t cuts[7]) { | |
55 | fChi2max=cuts[0]; | |
56 | fDNmin=cuts[1]; fDPmin=cuts[2]; | |
57 | fDCAmax=cuts[3]; fCPAmax=cuts[4]; | |
58 | fRmin=cuts[5]; fRmax=cuts[6]; | |
5d390eda | 59 | fX=fY=fZ=0.; |
7f6ddf58 | 60 | } |
61 | ||
62 | inline void AliV0vertexer::SetCuts(const Double_t cuts[7]) { | |
63 | fChi2max=cuts[0]; | |
64 | fDNmin=cuts[1]; fDPmin=cuts[2]; | |
65 | fDCAmax=cuts[3]; fCPAmax=cuts[4]; | |
66 | fRmin=cuts[5]; fRmax=cuts[6]; | |
67 | } | |
68 | ||
69 | inline void AliV0vertexer::GetCuts(Double_t cuts[7]) const { | |
70 | cuts[0]=fChi2max; | |
71 | cuts[1]=fDNmin; cuts[2]=fDPmin; | |
72 | cuts[3]=fDCAmax; cuts[4]=fCPAmax; | |
73 | cuts[5]=fRmin; cuts[6]=fRmax; | |
74 | } | |
75 | ||
76 | #endif | |
77 | ||
78 |