1 /**************************************************************************
2 * Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * Permission to use, copy, modify and distribute this software and its *
7 * documentation strictly for non-commercial purposes is hereby granted *
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9 * copies and that both the copyright notice and this permission notice *
10 * appear in the supporting documentation. The authors make no claims *
11 * about the suitability of this software for any purpose. It is *
12 * provided "as is" without express or implied warranty. *
13 **************************************************************************/
17 //*************************************************************************
18 // Class AliAnalysisTaskMEVertexingHF
19 // AliAnalysisTaskME for event mixing, building the background for
20 // heavy-flavour decay candidates
21 // Author: R.Romita, r.romita@gsi.de
22 //*************************************************************************
27 #include "TObjArray.h"
33 #include "AliVEvent.h"
34 #include "AliVVertex.h"
35 #include "AliAODEvent.h"
36 #include "AliESDEvent.h"
37 #include "AliAnalysisVertexingHF.h"
38 #include "AliMixedEvent.h"
39 #include "AliAnalysisTaskMEVertexingHF.h"
40 #include "AliAnalysisManager.h"
41 #include "AliMultiEventInputHandler.h"
43 ClassImp(AliAnalysisTaskMEVertexingHF)
45 //________________________________________________________________________
46 AliAnalysisTaskMEVertexingHF::AliAnalysisTaskMEVertexingHF(const char *name) :
47 AliAnalysisTaskME(name),
53 fCharm3ProngTClArr(0),
54 fCharm4ProngTClArr(0),
57 fLikeSign2ProngTClArr(0),
58 fLikeSign3ProngTClArr(0)
62 //________________________________________________________________________
63 void AliAnalysisTaskMEVertexingHF::Init()
66 // Instanciates vHF and loads its parameters
67 // Some parameters are changed
69 if(gROOT->LoadMacro("ConfigVertexingHF.C")) {
70 printf("AnalysisTaskMEVertexingHF::Init() \n Using $ALICE_ROOT/PWG3/vertexingHF/ConfigVertexingHF.C\n");
71 gROOT->LoadMacro("$ALICE_ROOT/PWG3/vertexingHF/ConfigVertexingHF.C");
73 fvHF = (AliAnalysisVertexingHF*)gROOT->ProcessLine("ConfigVertexingHF()");
74 fvHF->SetMixEventOn();
77 if(fvHF->GetLikeSign()) {
78 printf("WARNING: fLikeSign will be switched off!");
79 fvHF->SetLikeSignOff();
81 if(fvHF->GetRecoPrimVtxSkippingTrks() || fvHF->GetRmTrksFromPrimVtx()){
82 fvHF->UnsetRecoPrimVtxSkippingTrks();
83 printf("WARNING: if on, fRecoPrimVtxSkippingTrks and fRmTrksFromPrimVtx will be switched off!\n");
86 AliAnalysisManager::GetAnalysisManager()->RegisterExtraFile("AliAOD.VertexingHF.root");
90 //________________________________________________________________________
91 void AliAnalysisTaskMEVertexingHF::UserCreateOutputObjects()
93 // Create the output container
97 Fatal("UserCreateOutputObjects", "This task needs an AOD handler");
102 printf("AnalysisTaskMEVertexingHF::UserCreateOutPutData() \n ERROR! no fvHF!\n");
105 fVerticesHFTClArr = new TClonesArray("AliAODVertex", 0);
106 fVerticesHFTClArr->SetName("VerticesHF");
107 AddAODBranch("TClonesArray", &fVerticesHFTClArr);
108 if(fvHF->GetD0toKpi()) {
109 fD0toKpiTClArr = new TClonesArray("AliAODRecoDecayHF2Prong", 0);
110 fD0toKpiTClArr->SetName("D0toKpi");
111 AddAODBranch("TClonesArray", &fD0toKpiTClArr);
113 if(fvHF->GetJPSItoEle()) {
114 fJPSItoEleTClArr = new TClonesArray("AliAODRecoDecayHF2Prong", 0);
115 fJPSItoEleTClArr->SetName("JPSItoEle");
116 AddAODBranch("TClonesArray", &fJPSItoEleTClArr);
118 if(fvHF->Get3Prong()) {
119 fCharm3ProngTClArr = new TClonesArray("AliAODRecoDecayHF3Prong", 0);
120 fCharm3ProngTClArr->SetName("Charm3Prong");
121 AddAODBranch("TClonesArray", &fCharm3ProngTClArr);
123 if(fvHF->Get4Prong()) {
124 fCharm4ProngTClArr = new TClonesArray("AliAODRecoDecayHF4Prong", 0);
125 fCharm4ProngTClArr->SetName("Charm4Prong");
126 AddAODBranch("TClonesArray", &fCharm4ProngTClArr);
129 if(fvHF->GetDstar()) {
130 fDstarTClArr = new TClonesArray("AliAODRecoCascadeHF", 0);
131 fDstarTClArr->SetName("Dstar");
132 AddAODBranch("TClonesArray", &fDstarTClArr);
135 if(fvHF->GetCascades()){
136 fCascadesTClArr = new TClonesArray("AliAODRecoCascadeHF", 0);
137 fCascadesTClArr->SetName("CascadesHF");
138 AddAODBranch("TClonesArray", &fCascadesTClArr);
141 if(fvHF->GetLikeSign()) {
142 fLikeSign2ProngTClArr = new TClonesArray("AliAODRecoDecayHF2Prong", 0);
143 fLikeSign2ProngTClArr->SetName("LikeSign2Prong");
144 AddAODBranch("TClonesArray", &fLikeSign2ProngTClArr);
147 if(fvHF->GetLikeSign() && fvHF->Get3Prong()) {
148 fLikeSign3ProngTClArr = new TClonesArray("AliAODRecoDecayHF3Prong", 0);
149 fLikeSign3ProngTClArr->SetName("LikeSign3Prong");
150 AddAODBranch("TClonesArray", &fLikeSign3ProngTClArr);
156 //________________________________________________________________________
157 void AliAnalysisTaskMEVertexingHF::UserExec(Option_t *)
159 // Execute analysis for current event:
160 // first build the mixed event, compute the new primary vtx
161 // then heavy flavor vertexing
163 Int_t nev = fInputHandler->GetBufferSize();
164 fMixedEvent = new AliMixedEvent();
165 fMixedEvent->Reset();
167 TString primTitleFirst;
168 AliAODVertex *vtxCopy=0;
170 TObjArray *vertices=new TObjArray(nev);
171 for (Int_t iev = 0; iev < nev; iev++) {
172 AliAODEvent *evt = (AliAODEvent*)GetEvent(iev);
173 if(!evt) {delete vertices;return;}
174 AliAODVertex *evtVtx=(AliAODVertex*)evt->GetPrimaryVertex();
175 if(!evtVtx) {delete vertices;return;}
176 primTitle = evtVtx->GetTitle();
177 Int_t nContrib=evtVtx->GetNContributors();
178 if(!primTitle.Contains("VertexerTracks") || nContrib<=0) {
183 vtxCopy=new AliAODVertex(*evtVtx);
184 primTitleFirst=evtVtx->GetTitle();
187 fMixedEvent->AddEvent(evt);
189 vertices->AddLast(vtxCopy);
194 Double_t vtxPos[3]={0.,0.,0.},vtxSigma[3]={0.,0.,0.};
195 Int_t nContributors[1]={0};
197 Bool_t primaryOk=fMixedEvent->ComputeVtx(vertices,vtxPos,vtxSigma,nContributors);
204 Int_t contribCopy=nContributors[0];
205 Double_t vtxCov[6]={vtxSigma[0]*vtxSigma[0],0,vtxSigma[1]*vtxSigma[1],0,0,vtxSigma[2]*vtxSigma[2]};
206 AliVVertex* newVertex=new AliESDVertex(vtxPos,vtxCov,chi2,contribCopy);
207 newVertex->SetTitle(primTitleFirst.Data());
208 fMixedEvent->SetPrimaryVertex(newVertex);
214 fvHF->FindCandidates(fMixedEvent,
222 fLikeSign2ProngTClArr,
223 fLikeSign3ProngTClArr);
229 //________________________________________________________________________
230 void AliAnalysisTaskMEVertexingHF::Terminate(Option_t *)
232 // Terminate analysis