]>
Commit | Line | Data |
---|---|---|
fd1d0cb9 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2006, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
27de2dfb | 16 | /* $Id$ */ |
17 | ||
fd1d0cb9 | 18 | ///////////////////////////////////////////////////////////// |
19 | // | |
20 | // class used to extract and store reco info of dimu candidate | |
21 | // | |
22 | // Author: X-M. Zhang, zhang@clermont.in2p3.fr | |
23 | // zhangxm@iopp.ccnu.edu.cn | |
24 | ///////////////////////////////////////////////////////////// | |
25 | ||
26 | #include <TDatabasePDG.h> | |
27 | #include <TLorentzVector.h> | |
28 | ||
29 | #include "AliMuonInfoStoreRD.h" | |
30 | #include "AliDimuInfoStoreRD.h" | |
31 | ||
32 | ClassImp(AliDimuInfoStoreRD) | |
33 | ||
34 | const TString AliDimuInfoStoreRD::fgkStdBranchName("DimuRD"); | |
9bcac085 | 35 | Double_t AliDimuInfoStoreRD::fgCutd[16] = {-999999., 999999., |
36 | -999999., 999999., | |
37 | -999999., 999999., | |
1195bb6f | 38 | -999999., 999999., |
fd1d0cb9 | 39 | -999999., 999999., |
40 | -999999., 999999., | |
41 | -999999., 999999., | |
42 | -999999., 999999.}; | |
43 | ||
44 | //----------------------------------------------------------------------------- | |
45 | AliDimuInfoStoreRD::AliDimuInfoStoreRD() : | |
46 | TObject(), | |
47 | fMomentum(), | |
48 | fCharge(0), | |
49 | fInvM(0.) | |
50 | { | |
51 | // | |
52 | // default constructor | |
53 | // | |
54 | for (Int_t i=2; i--;) fMuonRef[i] = 0; | |
55 | } | |
56 | ||
57 | //----------------------------------------------------------------------------- | |
58 | AliDimuInfoStoreRD::AliDimuInfoStoreRD(AliMuonInfoStoreRD* const trk0, AliMuonInfoStoreRD* const trk1) : | |
59 | TObject(), | |
60 | fMomentum(), | |
61 | fCharge(0), | |
62 | fInvM(0.) | |
63 | { | |
64 | // | |
65 | // default constructor | |
66 | // | |
67 | fMuonRef[0] = trk0; | |
68 | fMuonRef[1] = trk1; | |
69 | FillDimuInfo(); | |
70 | } | |
71 | ||
72 | //----------------------------------------------------------------------------- | |
73 | AliDimuInfoStoreRD::AliDimuInfoStoreRD(const AliDimuInfoStoreRD &src) : | |
74 | TObject(src), | |
75 | fMomentum(src.fMomentum), | |
76 | fCharge(src.fCharge), | |
77 | fInvM(src.fInvM) | |
78 | { | |
79 | // | |
80 | // copy constructor | |
81 | // | |
82 | for (Int_t i=2; i--;) fMuonRef[i] = src.fMuonRef[i]; | |
83 | } | |
84 | ||
85 | //----------------------------------------------------------------------------- | |
86 | AliDimuInfoStoreRD& AliDimuInfoStoreRD::operator=(const AliDimuInfoStoreRD &src) | |
87 | { | |
88 | // | |
89 | // assignment constructor | |
90 | // | |
91 | if(&src==this) return *this; | |
92 | ||
93 | fMomentum = src.fMomentum; | |
94 | fCharge = src.fCharge; | |
95 | fInvM = src.fInvM; | |
96 | for (Int_t i=2; i--;) fMuonRef[i] = src.fMuonRef[i]; | |
97 | ||
98 | return *this; | |
99 | } | |
100 | ||
101 | //----------------------------------------------------------------------------- | |
102 | AliDimuInfoStoreRD::~AliDimuInfoStoreRD() | |
103 | { | |
104 | // | |
105 | // destructor | |
106 | // | |
107 | } | |
108 | ||
109 | //----------------------------------------------------------------------------- | |
110 | void AliDimuInfoStoreRD::FillDimuInfo() | |
111 | { | |
112 | // fill dimuon candidate info from the corresponding two muon tracks | |
113 | ||
114 | AliMuonInfoStoreRD *trk0 = (AliMuonInfoStoreRD*)fMuonRef[0].GetObject(); | |
115 | AliMuonInfoStoreRD *trk1 = (AliMuonInfoStoreRD*)fMuonRef[1].GetObject(); | |
116 | ||
117 | fMomentum = trk0->Momentum() + trk1->Momentum(); | |
118 | fCharge = trk0->Charge() + trk1->Charge(); | |
119 | ||
120 | Double_t mMu = TDatabasePDG::Instance()->GetParticle(13)->Mass(); | |
121 | TLorentzVector lorentzP0, lorentzP1, lorentzP; | |
122 | lorentzP0.SetVectM(trk0->Momentum(), mMu); | |
123 | lorentzP1.SetVectM(trk1->Momentum(), mMu); | |
124 | lorentzP = lorentzP0 + lorentzP1; | |
125 | fInvM = lorentzP.Mag(); | |
126 | ||
127 | trk0 = 0; | |
128 | trk1 = 0; | |
129 | return; | |
130 | } | |
131 | ||
132 | //----------------------------------------------------------------------------- | |
6709e09d | 133 | Bool_t AliDimuInfoStoreRD::IsSelected() |
fd1d0cb9 | 134 | { |
135 | // select dimuon candidates according to the corresponding two muon tracks cuts | |
136 | ||
9bcac085 | 137 | Double_t cutsOld[16]; |
fd1d0cb9 | 138 | AliMuonInfoStoreRD::SelectionCust(cutsOld); |
139 | AliMuonInfoStoreRD::SetSelectionCuts(AliDimuInfoStoreRD::fgCutd); | |
140 | AliMuonInfoStoreRD *trk0 = (AliMuonInfoStoreRD*)fMuonRef[0].GetObject(); | |
141 | AliMuonInfoStoreRD *trk1 = (AliMuonInfoStoreRD*)fMuonRef[1].GetObject(); | |
6709e09d | 142 | if (!trk0->IsSelected()) { AliMuonInfoStoreRD::SetSelectionCuts(cutsOld); return kFALSE; } |
143 | if (!trk1->IsSelected()) { AliMuonInfoStoreRD::SetSelectionCuts(cutsOld); return kFALSE; } | |
fd1d0cb9 | 144 | |
145 | AliMuonInfoStoreRD::SetSelectionCuts(cutsOld); | |
146 | return kTRUE; | |
147 | } |