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0de9de87 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2008, 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 | ||
16 | ///////////////////////////////////////////////////////////// | |
17 | // | |
18 | // AliAnalysisTaskSE for the selection of heavy flavor | |
19 | // decay candidates and creation a stand-alone AOD. | |
20 | // | |
21 | // Author: A.Dainese, andrea.dainese@lnl.infn.it | |
22 | ///////////////////////////////////////////////////////////// | |
23 | ||
24 | #include <TClonesArray.h> | |
25 | ||
26 | #include "AliAODEvent.h" | |
27 | #include "AliAODVertex.h" | |
28 | #include "AliAODTrack.h" | |
29 | #include "AliAODRecoDecayHF2Prong.h" | |
30 | #include "AliAnalysisTaskSE.h" | |
31 | #include "AliAnalysisTaskSESelectHF.h" | |
32 | ||
33 | ClassImp(AliAnalysisTaskSESelectHF) | |
34 | ||
35 | ||
36 | //________________________________________________________________________ | |
37 | AliAnalysisTaskSESelectHF::AliAnalysisTaskSESelectHF(): | |
38 | AliAnalysisTaskSE(), | |
39 | fVerticesHFTClArr(0), | |
40 | fD0toKpiTClArr(0) | |
41 | { | |
42 | // Default constructor | |
43 | SetD0toKpiCuts(); | |
44 | } | |
45 | ||
46 | //________________________________________________________________________ | |
47 | AliAnalysisTaskSESelectHF::AliAnalysisTaskSESelectHF(const char *name): | |
48 | AliAnalysisTaskSE(name), | |
49 | fVerticesHFTClArr(0), | |
50 | fD0toKpiTClArr(0) | |
51 | { | |
52 | // Default constructor | |
53 | SetD0toKpiCuts(); | |
54 | } | |
55 | ||
56 | //________________________________________________________________________ | |
57 | AliAnalysisTaskSESelectHF::~AliAnalysisTaskSESelectHF() | |
58 | { | |
59 | // Destructor | |
60 | } | |
61 | ||
62 | //________________________________________________________________________ | |
63 | void AliAnalysisTaskSESelectHF::Init() | |
64 | { | |
65 | // Initialization | |
66 | ||
67 | if(fDebug > 1) printf("AnalysisTaskSESelectHF::Init() \n"); | |
68 | ||
69 | return; | |
70 | } | |
71 | ||
72 | //________________________________________________________________________ | |
73 | void AliAnalysisTaskSESelectHF::UserCreateOutputObjects() | |
74 | { | |
75 | // Create the output container | |
76 | // | |
77 | if(fDebug > 1) printf("AnalysisTaskSESelectHF::UserCreateOutputObjects() \n"); | |
78 | ||
79 | fVerticesHFTClArr = new TClonesArray("AliAODVertex", 0); | |
80 | fVerticesHFTClArr->SetName("VerticesHF"); | |
080ac6fd | 81 | AddAODBranch("TClonesArray", &fVerticesHFTClArr); |
0de9de87 | 82 | |
83 | fD0toKpiTClArr = new TClonesArray("AliAODRecoDecayHF2Prong", 0); | |
84 | fD0toKpiTClArr->SetName("D0toKpi"); | |
080ac6fd | 85 | AddAODBranch("TClonesArray", &fD0toKpiTClArr); |
0de9de87 | 86 | |
87 | return; | |
88 | } | |
89 | ||
90 | //________________________________________________________________________ | |
91 | void AliAnalysisTaskSESelectHF::UserExec(Option_t */*option*/) | |
92 | { | |
93 | // Execute analysis for current event: | |
94 | // heavy flavor candidates selection and histograms | |
95 | ||
96 | AliAODEvent *aodIn = dynamic_cast<AliAODEvent*> (InputEvent()); | |
97 | ||
98 | // load D0->Kpi candidates | |
99 | TClonesArray *inputArrayD0toKpi = | |
100 | (TClonesArray*)aodIn->GetList()->FindObject("D0toKpi"); | |
0bd2832b | 101 | if(!inputArrayD0toKpi) { |
102 | printf("AliAnalysisTaskSESelectHF::UserExec: D0toKpi branch not found!\n"); | |
103 | return; | |
104 | } | |
0de9de87 | 105 | |
106 | //print event info | |
0bd2832b | 107 | //aodIn->GetHeader()->Print(); |
0de9de87 | 108 | |
109 | // primary vertex | |
110 | AliAODVertex *vtx1 = (AliAODVertex*)aodIn->GetPrimaryVertex(); | |
0bd2832b | 111 | //vtx1->Print(); |
0de9de87 | 112 | |
113 | // make trkIDtoEntry register (temporary) | |
114 | Int_t trkIDtoEntry[100000]; | |
115 | for(Int_t it=0;it<aodIn->GetNumberOfTracks();it++) { | |
116 | AliAODTrack *track = aodIn->GetTrack(it); | |
117 | trkIDtoEntry[track->GetID()]=it; | |
118 | } | |
119 | ||
120 | Int_t iOutVerticesHF=0,iOutD0toKpi=0; | |
121 | fVerticesHFTClArr->Delete(); | |
122 | iOutVerticesHF = fVerticesHFTClArr->GetEntriesFast(); | |
123 | TClonesArray &verticesHFRef = *fVerticesHFTClArr; | |
124 | fD0toKpiTClArr->Delete(); | |
125 | iOutD0toKpi = fD0toKpiTClArr->GetEntriesFast(); | |
126 | TClonesArray &aodD0toKpiRef = *fD0toKpiTClArr; | |
127 | ||
128 | ||
129 | // loop over D0->Kpi candidates | |
130 | Int_t nInD0toKpi = inputArrayD0toKpi->GetEntriesFast(); | |
131 | printf("Number of D0->Kpi: %d\n",nInD0toKpi); | |
132 | ||
133 | for (Int_t iD0toKpi = 0; iD0toKpi < nInD0toKpi; iD0toKpi++) { | |
134 | AliAODRecoDecayHF2Prong *dIn = (AliAODRecoDecayHF2Prong*)inputArrayD0toKpi->UncheckedAt(iD0toKpi); | |
135 | Bool_t unsetvtx=kFALSE; | |
136 | if(!dIn->GetOwnPrimaryVtx()) { | |
137 | dIn->SetOwnPrimaryVtx(vtx1); // needed to compute all variables | |
138 | unsetvtx=kTRUE; | |
139 | } | |
140 | Int_t okD0=0,okD0bar=0; | |
141 | if(dIn->SelectD0(fD0toKpiCuts,okD0,okD0bar)) { | |
142 | // get daughter AOD tracks | |
143 | AliAODTrack *trk0=aodIn->GetTrack(trkIDtoEntry[dIn->GetProngID(0)]); | |
144 | AliAODTrack *trk1=aodIn->GetTrack(trkIDtoEntry[dIn->GetProngID(1)]); | |
145 | // this will be replaced by | |
146 | //AliAODTrack *trk0 = (AliAODTrack*)(dIn->GetSecondaryVtx()->GetDaughter(0)); | |
147 | printf("pt of positive track: %f\n",trk0->Pt()); | |
148 | printf("pt of negative track: %f\n",trk1->Pt()); | |
0bd2832b | 149 | // HERE ONE COULD RECALCULATE THE VERTEX USING THE KF PACKAGE |
0de9de87 | 150 | |
151 | // clone candidate for output AOD | |
152 | AliAODVertex *v = new(verticesHFRef[iOutVerticesHF++]) | |
153 | AliAODVertex(*(dIn->GetSecondaryVtx())); | |
154 | Double_t px[2]={dIn->PxProng(0),dIn->PxProng(1)}; | |
155 | Double_t py[2]={dIn->PyProng(0),dIn->PyProng(1)}; | |
156 | Double_t pz[2]={dIn->PzProng(0),dIn->PzProng(1)}; | |
157 | Double_t d0[2]={dIn->Getd0Prong(0),dIn->Getd0Prong(1)}; | |
158 | Double_t d0err[2]={dIn->Getd0errProng(0),dIn->Getd0errProng(1)}; | |
159 | AliAODRecoDecayHF2Prong *dOut=new(aodD0toKpiRef[iOutD0toKpi++]) | |
160 | AliAODRecoDecayHF2Prong(v,px,py,pz,d0,d0err,dIn->GetDCA()); | |
0bd2832b | 161 | dOut->SetOwnPrimaryVtx((AliAODVertex*)((dIn->GetOwnPrimaryVtx())->Clone())); |
b0ebe389 | 162 | v->SetParent(dOut); |
0de9de87 | 163 | } |
164 | if(unsetvtx) dIn->UnsetOwnPrimaryVtx(); | |
165 | } // end loop on D0->Kpi | |
166 | ||
0bd2832b | 167 | printf("Number of selected D0->Kpi: %d\n",iOutD0toKpi); |
168 | ||
0de9de87 | 169 | |
170 | return; | |
171 | } | |
172 | ||
173 | //________________________________________________________________________ | |
174 | void AliAnalysisTaskSESelectHF::Terminate(Option_t */*option*/) | |
175 | { | |
176 | // Terminate analysis | |
177 | // | |
178 | if(fDebug > 1) printf("AnalysisTaskSESelectHF: Terminate() \n"); | |
179 | } | |
180 | ||
181 | //________________________________________________________________________ | |
182 | void AliAnalysisTaskSESelectHF::SetD0toKpiCuts(Double_t cut0,Double_t cut1, | |
183 | Double_t cut2,Double_t cut3,Double_t cut4, | |
184 | Double_t cut5,Double_t cut6, | |
185 | Double_t cut7,Double_t cut8) | |
186 | { | |
187 | // Set the cuts for D0 selection | |
188 | // cuts[0] = inv. mass half width [GeV] | |
189 | // cuts[1] = dca [cm] | |
190 | // cuts[2] = cosThetaStar | |
191 | // cuts[3] = pTK [GeV/c] | |
192 | // cuts[4] = pTPi [GeV/c] | |
193 | // cuts[5] = d0K [cm] upper limit! | |
194 | // cuts[6] = d0Pi [cm] upper limit! | |
195 | // cuts[7] = d0d0 [cm^2] | |
196 | // cuts[8] = cosThetaPoint | |
197 | ||
198 | fD0toKpiCuts[0] = cut0; | |
199 | fD0toKpiCuts[1] = cut1; | |
200 | fD0toKpiCuts[2] = cut2; | |
201 | fD0toKpiCuts[3] = cut3; | |
202 | fD0toKpiCuts[4] = cut4; | |
203 | fD0toKpiCuts[5] = cut5; | |
204 | fD0toKpiCuts[6] = cut6; | |
205 | fD0toKpiCuts[7] = cut7; | |
206 | fD0toKpiCuts[8] = cut8; | |
207 | ||
208 | return; | |
209 | } | |
210 | ||
211 | //________________________________________________________________________ | |
212 | void AliAnalysisTaskSESelectHF::SetD0toKpiCuts(const Double_t cuts[9]) | |
213 | { | |
214 | // Set the cuts for D0 selection | |
215 | // cuts[0] = inv. mass half width [GeV] | |
216 | // cuts[1] = dca [cm] | |
217 | // cuts[2] = cosThetaStar | |
218 | // cuts[3] = pTK [GeV/c] | |
219 | // cuts[4] = pTPi [GeV/c] | |
220 | // cuts[5] = d0K [cm] upper limit! | |
221 | // cuts[6] = d0Pi [cm] upper limit! | |
222 | // cuts[7] = d0d0 [cm^2] | |
223 | // cuts[8] = cosThetaPoint | |
224 | ||
225 | for(Int_t i=0; i<9; i++) fD0toKpiCuts[i] = cuts[i]; | |
226 | ||
227 | return; | |
228 | } |