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 // AliAnalysisTaskSpectraAOD class
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18 //-----------------------------------------------------------------
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22 #include "TLegend.h"
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25 #include "TCanvas.h"
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26 #include "AliAnalysisTask.h"
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27 #include "AliAnalysisManager.h"
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28 #include "AliAODTrack.h"
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29 #include "AliAODMCParticle.h"
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30 #include "AliVParticle.h"
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31 #include "AliAODEvent.h"
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32 #include "AliAODInputHandler.h"
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33 #include "AliAnalysisTaskSpectraAOD.h"
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34 #include "AliAnalysisTaskESDfilter.h"
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35 #include "AliAnalysisDataContainer.h"
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36 #include "AliSpectraAODHistoManager.h"
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37 #include "AliSpectraAODTrackCuts.h"
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38 #include "AliSpectraAODEventCuts.h"
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39 #include "AliCentrality.h"
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42 #include "AliVEvent.h"
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43 #include "AliPIDResponse.h"
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44 #include "AliStack.h"
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45 #include "AliSpectraAODPID.h"
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46 #include <TMCProcess.h>
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53 using namespace AliSpectraNameSpace;
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54 using namespace std;
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56 ClassImp(AliAnalysisTaskSpectraAOD) // EX1 This stuff tells root to implement the streamer, inspector methods etc (we discussed about it today)
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58 //________________________________________________________________________
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59 AliAnalysisTaskSpectraAOD::AliAnalysisTaskSpectraAOD(const char *name) : AliAnalysisTaskSE(name), fAOD(0), fHistMan(0), fTrackCuts(0), fEventCuts(0), fPID(0), fIsMC(0)
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61 // Default constructor
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63 DefineInput(0, TChain::Class());
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64 DefineOutput(1, AliSpectraAODHistoManager::Class());
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65 DefineOutput(2, AliSpectraAODEventCuts::Class());
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66 DefineOutput(3, AliSpectraAODTrackCuts::Class());
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67 DefineOutput(4, AliSpectraAODPID::Class());
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70 //________________________________________________________________________
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71 //________________________________________________________________________
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72 void AliAnalysisTaskSpectraAOD::UserCreateOutputObjects()
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74 // create output objects
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75 fHistMan = new AliSpectraAODHistoManager("SpectraHistos");
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77 if (!fTrackCuts) AliFatal("Track Cuts should be set in the steering macro");
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78 if (!fEventCuts) AliFatal("Event Cuts should be set in the steering macro");
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79 if (!fPID) AliFatal("PID object should be set in the steering macro");
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81 PostData(1, fHistMan );
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82 PostData(2, fEventCuts);
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83 PostData(3, fTrackCuts);
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87 //________________________________________________________________________
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88 void AliAnalysisTaskSpectraAOD::UserExec(Option_t *)
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92 fAOD = dynamic_cast<AliAODEvent*>(fInputEvent);
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93 if (strcmp(fAOD->ClassName(), "AliAODEvent"))
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95 AliFatal("Not processing AODs");
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97 //check on centrality distribution
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98 fHistMan->GetPtHistogram("CentCheck")->Fill(fAOD->GetCentrality()->GetCentralityPercentile("V0M"),fAOD->GetHeader()->GetCentralityP()->GetCentralityPercentileUnchecked("V0M"));
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100 if(!fEventCuts->IsSelected(fAOD,fTrackCuts))return;//event selection
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102 //AliCentrality fAliCentral*;
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103 // if ((fAOD->GetCentrality())->GetCentralityPercentile("V0M") > 5.) return;
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105 // First do MC to fill up the MC particle array, such that we can use it later
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106 TClonesArray *arrayMC = 0;
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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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113 Int_t nMC = arrayMC->GetEntries();
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114 for (Int_t iMC = 0; iMC < nMC; iMC++)
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116 AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(iMC);
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117 if(!partMC->Charge()) continue;//Skip neutrals
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118 if(TMath::Abs(partMC->Eta()) < fTrackCuts->GetEta()){//charged hadron are filled inside the eta acceptance
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119 fHistMan->GetPtHistogram(kHistPtGen)->Fill(partMC->Pt(),partMC->IsPhysicalPrimary());
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122 if(TMath::Abs(partMC->Y()) > fTrackCuts->GetY() ) continue;
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123 // check for true PID + and fill P_t histos
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124 Int_t charge = partMC->Charge() > 0 ? kChPos : kChNeg ;
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125 Int_t id = fPID->GetParticleSpecie(partMC);
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126 if(id != kSpUndefined) {
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127 fHistMan->GetHistogram2D(kHistPtGenTruePrimary,id,charge)->Fill(partMC->Pt(),partMC->IsPhysicalPrimary());
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132 //main loop on tracks
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133 for (Int_t iTracks = 0; iTracks < fAOD->GetNumberOfTracks(); iTracks++) {
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134 AliAODTrack* track = fAOD->GetTrack(iTracks);
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135 if (!fTrackCuts->IsSelected(track)) continue;
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137 fPID->FillQAHistos(fHistMan, track, fTrackCuts);
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139 // //cut on q vectors track-by-track FIXME
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140 // if ((qPos>fTrackCuts->GetQvecMin() && qPos<fTrackCuts->GetQvecMax() && track->Eta()<0) || (qNeg>fTrackCuts->GetQvecMin() && qNeg<fTrackCuts->GetQvecMax() && track->Eta()>=0)){
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142 //calculate DCA for AOD track
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143 Double_t dca=track->DCA();
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144 if(dca==-999.){// track->DCA() does not work in old AOD production
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145 Double_t d[2], covd[3];
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146 AliAODTrack* track_clone=(AliAODTrack*)track->Clone("track_clone"); // need to clone because PropagateToDCA updates the track parameters
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147 Bool_t isDCA = track_clone->PropagateToDCA(fAOD->GetPrimaryVertex(),fAOD->GetMagneticField(),9999.,d,covd);
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148 delete track_clone;
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149 if(!isDCA)d[0]=-999.;
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152 fHistMan->GetPtHistogram(kHistPtRec)->Fill(track->Pt(),dca); // PT histo
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154 // get identity and charge
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155 Int_t idRec = fPID->GetParticleSpecie(track, fTrackCuts);
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157 Int_t charge = track->Charge() > 0 ? kChPos : kChNeg;
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159 // Fill histograms, only if inside y and nsigma acceptance
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160 if(idRec != kSpUndefined && fTrackCuts->CheckYCut ((AODParticleSpecies_t)idRec))fHistMan->GetHistogram2D(kHistPtRecSigma,idRec,charge)->Fill(track->Pt(),dca);
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161 //can't put a continue because we still have to fill allcharged primaries, done later
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165 AliAODMCParticle *partMC = (AliAODMCParticle*) arrayMC->At(TMath::Abs(track->GetLabel()));
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167 AliError("Cannot get MC particle");
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170 // Check if it is primary, secondary from material or secondary from weak decay
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171 Bool_t isPrimary = partMC->IsPhysicalPrimary();
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172 Bool_t isSecondaryMaterial = kFALSE;
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173 Bool_t isSecondaryWeak = kFALSE;
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175 Int_t mfl=-999,codemoth=-999;
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176 Int_t indexMoth=partMC->GetMother(); // FIXME ignore fakes? TO BE CHECKED, on ESD is GetFirstMother()
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177 if(indexMoth>=0){//is not fake
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178 AliAODMCParticle* moth = (AliAODMCParticle*) arrayMC->At(indexMoth);
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179 codemoth = TMath::Abs(moth->GetPdgCode());
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180 mfl = Int_t (codemoth/ TMath::Power(10, Int_t(TMath::Log10(codemoth))));
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182 // Int_t uniqueID = partMC->GetUniqueID();
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183 // cout<<"uniqueID: "<<partMC->GetUniqueID()<<" "<<kPDecay<<endl;
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184 // cout<<"status: "<<partMC->GetStatus()<<" "<<kPDecay<<endl;
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185 // if(uniqueID == kPDecay)Printf("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
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186 if(mfl==3) isSecondaryWeak = kTRUE; // add if(partMC->GetStatus() & kPDecay)? FIXME
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187 else isSecondaryMaterial = kTRUE;
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190 if (isPrimary)fHistMan->GetPtHistogram(kHistPtRecPrimary)->Fill(track->Pt(),dca); // PT histo of primaries
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192 //nsigma cut (reconstructed nsigma)
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193 if(idRec == kSpUndefined) continue;
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195 // rapidity cut (reconstructed pt and identity)
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196 if(!fTrackCuts->CheckYCut ((AODParticleSpecies_t)idRec)) continue;
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199 Int_t idGen = fPID->GetParticleSpecie(partMC);
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200 //if(TMath::Abs(partMC->Y()) > fTrackCuts->GetY() ) continue; // FIXME: do we need a rapidity cut on the generated?
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201 // Fill histograms for primaries
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203 if (idRec == idGen) fHistMan->GetHistogram2D(kHistPtRecTrue, idGen, charge)->Fill(track->Pt(),dca);
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206 fHistMan ->GetHistogram2D(kHistPtRecSigmaPrimary, idRec, charge)->Fill(track->Pt(),dca);
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207 if(idGen != kSpUndefined) {
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208 fHistMan ->GetHistogram2D(kHistPtRecPrimary, idGen, charge)->Fill(track->Pt(),dca);
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209 if (idRec == idGen) fHistMan->GetHistogram2D(kHistPtRecTruePrimary, idGen, charge)->Fill(track->Pt(),dca);
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212 //25th Apr - Muons are added to Pions -- FIXME
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213 if ( partMC->PdgCode() == 13 && idRec == kSpPion) {
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214 fHistMan->GetPtHistogram(kHistPtRecTrueMuonPlus)->Fill(track->Pt(),dca);
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216 fHistMan->GetPtHistogram(kHistPtRecTruePrimaryMuonPlus)->Fill(track->Pt(),dca);
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218 if ( partMC->PdgCode() == -13 && idRec == kSpPion) {
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219 fHistMan->GetPtHistogram(kHistPtRecTrueMuonMinus)->Fill(track->Pt(),dca);
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221 fHistMan->GetPtHistogram(kHistPtRecTruePrimaryMuonMinus)->Fill(track->Pt(),dca);
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227 // Fill secondaries
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228 if(isSecondaryWeak ) fHistMan->GetHistogram2D(kHistPtRecSigmaSecondaryWeakDecay, idRec, charge)->Fill(track->Pt(),dca);
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229 if(isSecondaryMaterial) fHistMan->GetHistogram2D(kHistPtRecSigmaSecondaryMaterial , idRec, charge)->Fill(track->Pt(),dca);
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232 } // end loop on tracks
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234 PostData(1, fHistMan );
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235 PostData(2, fEventCuts);
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236 PostData(3, fTrackCuts);
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237 PostData(4, fPID );
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240 //_________________________________________________________________
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241 void AliAnalysisTaskSpectraAOD::Terminate(Option_t *)
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