1 /**************************************************************************
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2 * Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
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4 * Author: The ALICE Off-line Project. *
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5 * Contributors are mentioned in the code where appropriate. *
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7 * Permission to use, copy, modify and distribute this software and its *
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8 * documentation strictly for non-commercial purposes is hereby granted *
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9 * without fee, provided that the above copyright notice appears in all *
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10 * copies and that both the copyright notice and this permission notice *
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11 * appear in the supporting documentation. The authors make no claims *
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12 * about the suitability of this software for any purpose. It is *
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13 * provided "as is" without express or implied warranty. *
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14 **************************************************************************/
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16 //-----------------------------------------------------------------
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17 // AliAnalysisTaskContMC class
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18 //-----------------------------------------------------------------
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22 #include "TLegend.h"
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26 #include "TCanvas.h"
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27 #include "AliAnalysisTask.h"
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28 #include "AliAnalysisManager.h"
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29 #include "AliVTrack.h"
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30 #include "AliAODMCParticle.h"
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31 #include "AliVParticle.h"
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32 #include "AliAODEvent.h"
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33 #include "AliAODInputHandler.h"
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34 #include "AliAnalysisTaskContMC.h"
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35 #include "AliAnalysisTaskESDfilter.h"
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36 #include "AliAnalysisDataContainer.h"
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37 #include "AliHelperPID.h"
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38 #include "AliCentrality.h"
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41 #include "AliVEvent.h"
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42 #include "AliPIDResponse.h"
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43 #include "AliStack.h"
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44 #include <TMCProcess.h>
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48 using namespace std;
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50 ClassImp(AliAnalysisTaskContMC)
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52 //________________________________________________________________________
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53 AliAnalysisTaskContMC::AliAnalysisTaskContMC(const char *name) : AliAnalysisTaskSE(name), fAOD(0), fNSigmaPID(0),fIsMC(0),fOutput(0)
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55 // Default constructor
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58 DefineInput(0, TChain::Class());
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59 //DefineOutput(1, AliHelperPID::Class());
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60 DefineOutput(1, TList::Class());
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63 //________________________________________________________________________
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64 //________________________________________________________________________
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65 void AliAnalysisTaskContMC::UserCreateOutputObjects()
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67 Printf("\n\n\n\n\n\n In CreateOutput Object:");
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69 //create output objects
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70 Printf("NSigma: %.1f",fNSigmaPID->GetNSigmaCut());
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71 Printf("IsMC: %d",fNSigmaPID->GetisMC());
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72 fOutput = new TList();
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73 fOutput->SetOwner();
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74 fOutput->SetName("list");
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76 fHistID = new TH3F("fHistID","fHistID",6,-1.5,4.5,4,-1.5,2.5,38,0.2,4);
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77 fOutput->Add(fHistID);
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79 if(!fNSigmaPID)AliFatal("PID object should be set in the steering macro");
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80 fOutput->Add(fNSigmaPID);
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82 //PostData(1, fNSigmaPID );
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83 PostData(1, fOutput );
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87 //________________________________________________________________________
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88 void AliAnalysisTaskContMC::UserExec(Option_t *)
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90 const Int_t npart=4;
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91 const Int_t pdgcode[npart+2]={-1,211,321,2212,11,13};
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92 const Int_t partid[npart+2]={-1,0,1,2,3,4};
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94 fAOD = dynamic_cast<AliAODEvent*>(fInputEvent);
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96 AliWarning("ERROR: AliAODEvent not available \n");
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100 if (strcmp(fAOD->ClassName(), "AliAODEvent"))
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102 AliFatal("Not processing AODs");
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105 TClonesArray *arrayMC = 0;
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106 Printf("fIsMC: %d",fIsMC);
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109 arrayMC = (TClonesArray*) fAOD->GetList()->FindObject(AliAODMCParticle::StdBranchName());
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111 AliFatal("Error: MC particles branch not found!\n");
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114 Double_t centrality = 0;
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116 AliCentrality *centralityObj = fAOD->GetHeader()->GetCentralityP();
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119 centrality = centralityObj->GetCentralityPercentileUnchecked("V0M");
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120 AliInfo(Form("Centrality is %f", centrality));
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124 Printf("WARNING: Centrality object is 0");
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127 if (centrality < 0)
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132 Int_t nVertex = ((AliAODEvent*)fAOD)->GetNumberOfVertices();
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133 if( nVertex > 0 ) {
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134 AliAODVertex* vertex = (AliAODVertex*)((AliAODEvent*)fAOD)->GetPrimaryVertex();
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135 //Int_t nTracksPrim = vertex->GetNContributors();
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136 Double_t zVertex = vertex->GetZ();
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138 if(TMath::Abs(zVertex)>10) return;
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139 //AliInfo(Form(" Vertex in = %f with %d particles by %s data ...",zVertex,nTracksPrim,vertex->GetName()));
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140 // Reject TPC only vertex
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141 TString name(vertex->GetName());
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142 if (name.CompareTo("PrimaryVertex") && name.CompareTo("SPDVertex"))return;
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147 for (Int_t iTracks = 0; iTracks < fAOD->GetNumberOfTracks(); iTracks++) {
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148 AliAODTrack* track = fAOD->GetTrack(iTracks);
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149 if(!(track->TestFilterBit(32)))continue;
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150 if (TMath::Abs(track->Eta()) > .8 || track->Pt() < .2) continue;
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154 if (fIsMC && arrayMC) {
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155 AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(TMath::Abs(track->GetLabel()));
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157 AliError("Cannot get MC particle");
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160 pdg=TMath::Abs(partMC->GetPdgCode());
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161 isph=partMC->IsPhysicalPrimary();
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164 //step 1, TOF Matching
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166 status=track->GetStatus();
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167 if((status&AliVTrack::kTOFout)==0 || (status&AliVTrack::kTIME)==0)continue;
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169 //step 2, combined PID
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170 Int_t IDTPCTOF=fNSigmaPID->GetParticleSpecies(track,1);
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171 if(IDTPCTOF==999)IDTPCTOF=-1;
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173 for(Int_t ipart=0;ipart<npart+2;ipart++)if(TMath::Abs(pdg)==pdgcode[ipart])IDMC=partid[ipart];
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174 fHistID->Fill(IDMC,IDTPCTOF,track->Pt());
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175 } // end loop on tracks
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177 PostData(1,fOutput);
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181 //_________________________________________________________________
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182 void AliAnalysisTaskContMC::Terminate(Option_t *)
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184 // Terminate analysis
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186 fOutput = dynamic_cast<TList*>(GetOutputData(1));
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188 printf("ERROR: fOutput not available\n");
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191 fHistID = dynamic_cast<TH3F*>(fOutput->FindObject("fHistID"));
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192 fNSigmaPID = dynamic_cast<AliHelperPID*>(fOutput->FindObject("fNSigmaPID"));
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