PWGJE/EMCALJetTasks/UserTasks/AliAnalysisTaskEmcalJetTagger.cxx

   1 //
   2 // Jet tagger analysis task.
   3 //
   4 // Author: M.Verweij
   5
   6 #include <TClonesArray.h>
   7 #include <TH1F.h>
   8 #include <TH2F.h>
   9 #include <TH3F.h>
  10 #include <THnSparse.h>
  11 #include <TList.h>
  12 #include <TLorentzVector.h>
  13 #include <TProfile.h>
  14 #include <TChain.h>
  15 #include <TSystem.h>
  16 #include <TFile.h>
  17 #include <TKey.h>
  18
  19 #include "AliVCluster.h"
  20 #include "AliVTrack.h"
  21 #include "AliEmcalJet.h"
  22 #include "AliRhoParameter.h"
  23 #include "AliLog.h"
  24 #include "AliEmcalParticle.h"
  25 #include "AliMCEvent.h"
  26 #include "AliGenPythiaEventHeader.h"
  27 #include "AliAODMCHeader.h"
  28 #include "AliMCEvent.h"
  29 #include "AliAnalysisManager.h"
  30 #include "AliJetContainer.h"
  31 #include "AliParticleContainer.h"
  32
  33 #include "AliAODEvent.h"
  34 #include "AliESDEvent.h"
  35
  36 #include "AliAnalysisTaskEmcalJetTagger.h"
  37
  38 ClassImp(AliAnalysisTaskEmcalJetTagger)
  39
  40 //________________________________________________________________________
  41 AliAnalysisTaskEmcalJetTagger::AliAnalysisTaskEmcalJetTagger() :
  42   AliAnalysisTaskEmcalJet("AliAnalysisTaskEmcalJetTagger", kTRUE),
  43   fJetTaggingType(kTag),
  44   fJetTaggingMethod(kGeo),
  45   fContainerBase(0),
  46   fContainerTag(1),
  47   fMinFractionShared(0),
  48   fMatchingDone(0),
  49   fh3PtJet1VsDeltaEtaDeltaPhi(0),
  50   fh2PtJet1VsDeltaR(0),
  51   fh2PtJet2VsFraction(0),
  52   fh2PtJet1VsLeadPtAllSel(0),
  53   fh2PtJet1VsLeadPtTagged(0),
  54   fh2PtJet1VsPtJet2(0),
  55   fh3PtJetDEtaDPhiConst(0),
  56   fh2PtJetDRConst(0),
  57   fh3PtJetAreaDRConst(0)
  58 {
  59   // Default constructor.
  60
  61   fh3PtJet1VsDeltaEtaDeltaPhi  = new TH3F*[fNcentBins];
  62   fh2PtJet1VsDeltaR            = new TH2F*[fNcentBins];
  63   fh2PtJet2VsFraction          = new TH2F*[fNcentBins];
  64   fh2PtJet1VsLeadPtAllSel      = new TH2F*[fNcentBins];
  65   fh2PtJet1VsLeadPtTagged      = new TH2F*[fNcentBins];
  66   fh2PtJet1VsPtJet2            = new TH2F*[fNcentBins];
  67
  68   for (Int_t i = 0; i < fNcentBins; i++) {
  69     fh3PtJet1VsDeltaEtaDeltaPhi[i] = 0;
  70     fh2PtJet1VsDeltaR[i]           = 0;
  71     fh2PtJet2VsFraction[i]         = 0;
  72     fh2PtJet1VsLeadPtAllSel[i]     = 0;
  73     fh2PtJet1VsLeadPtTagged[i]     = 0;
  74     fh2PtJet1VsPtJet2[i]           = 0;
  75   }
  76
  77   SetMakeGeneralHistograms(kTRUE);
  78
  79 }
  80
  81 //________________________________________________________________________
  82 AliAnalysisTaskEmcalJetTagger::AliAnalysisTaskEmcalJetTagger(const char *name) :
  83   AliAnalysisTaskEmcalJet(name, kTRUE),
  84   fJetTaggingType(kTag),
  85   fJetTaggingMethod(kGeo),
  86   fContainerBase(0),
  87   fContainerTag(1),
  88   fMinFractionShared(0),
  89   fMatchingDone(0),
  90   fh3PtJet1VsDeltaEtaDeltaPhi(0),
  91   fh2PtJet1VsDeltaR(0),
  92   fh2PtJet2VsFraction(0),
  93   fh2PtJet1VsLeadPtAllSel(0),
  94   fh2PtJet1VsLeadPtTagged(0),
  95   fh2PtJet1VsPtJet2(0),
  96   fh3PtJetDEtaDPhiConst(0),
  97   fh2PtJetDRConst(0),
  98   fh3PtJetAreaDRConst(0)
  99 {
 100   // Standard constructor.
 101
 102   fh3PtJet1VsDeltaEtaDeltaPhi = new TH3F*[fNcentBins];
 103   fh2PtJet1VsDeltaR           = new TH2F*[fNcentBins];
 104   fh2PtJet2VsFraction         = new TH2F*[fNcentBins];
 105   fh2PtJet1VsLeadPtAllSel     = new TH2F*[fNcentBins];
 106   fh2PtJet1VsLeadPtTagged     = new TH2F*[fNcentBins];
 107   fh2PtJet1VsPtJet2           = new TH2F*[fNcentBins];
 108
 109   for (Int_t i = 0; i < fNcentBins; i++) {
 110     fh3PtJet1VsDeltaEtaDeltaPhi[i] = 0;
 111     fh2PtJet1VsDeltaR[i]           = 0;
 112     fh2PtJet2VsFraction[i]         = 0;
 113     fh2PtJet1VsLeadPtAllSel[i]     = 0;
 114     fh2PtJet1VsLeadPtTagged[i]     = 0;
 115     fh2PtJet1VsPtJet2[i]           = 0;
 116   }
 117
 118   SetMakeGeneralHistograms(kTRUE);
 119 }
 120
 121 //________________________________________________________________________
 122 AliAnalysisTaskEmcalJetTagger::~AliAnalysisTaskEmcalJetTagger()
 123 {
 124   // Destructor.
 125 }
 126
 127 //________________________________________________________________________
 128 void AliAnalysisTaskEmcalJetTagger::UserCreateOutputObjects()
 129 {
 130   // Create user output.
 131
 132   AliAnalysisTaskEmcalJet::UserCreateOutputObjects();
 133
 134   Bool_t oldStatus = TH1::AddDirectoryStatus();
 135   TH1::AddDirectory(kFALSE);
 136
 137   const Int_t nBinsPt          = 250;
 138   const Int_t nBinsDPhi        = 100;
 139   const Int_t nBinsDEta        = 100;
 140   const Int_t nBinsDR          = 50;
 141   const Int_t nBinsFraction    = 101;
 142
 143   const Double_t minPt       = -50.;
 144   const Double_t maxPt       = 200.;
 145   const Double_t minDPhi     = -0.5;
 146   const Double_t maxDPhi     =  0.5;
 147   const Double_t minDEta     = -0.5;
 148   const Double_t maxDEta     =  0.5;
 149   const Double_t minDR       =  0.;
 150   const Double_t maxDR       =  0.5;
 151   const Double_t minFraction =  -0.005;
 152   const Double_t maxFraction =  1.005;
 153
 154   TString histName = "";
 155   TString histTitle = "";
 156   for (Int_t i = 0; i < fNcentBins; i++) {
 157
 158     histName = TString::Format("fh3PtJet1VsDeltaEtaDeltaPhi_%d",i);
 159     histTitle = TString::Format("%s;#it{p}_{T,jet1};#it{#Delta#eta};#it{#Delta#varphi}",histName.Data());
 160     fh3PtJet1VsDeltaEtaDeltaPhi[i] = new TH3F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,nBinsDEta,minDEta,maxDEta,nBinsDPhi,minDPhi,maxDPhi);
 161     fOutput->Add(fh3PtJet1VsDeltaEtaDeltaPhi[i]);
 162
 163     histName = TString::Format("fh2PtJet1VsDeltaR_%d",i);
 164     histTitle = TString::Format("%s;#it{p}_{T,jet1};#it{#Delta R}",histName.Data());
 165     fh2PtJet1VsDeltaR[i] = new TH2F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,nBinsDR,minDR,maxDR);
 166     fOutput->Add(fh2PtJet1VsDeltaR[i]);
 167
 168     histName = TString::Format("fh2PtJet2VsFraction_%d",i);
 169     histTitle = TString::Format("%s;#it{p}_{T,jet2};#it{f}_{shared}",histName.Data());
 170     fh2PtJet2VsFraction[i] = new TH2F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,nBinsFraction,minFraction,maxFraction);
 171     fOutput->Add(fh2PtJet2VsFraction[i]);
 172
 173     histName = TString::Format("fh2PtJet1VsLeadPtAllSel_%d",i);
 174     histTitle = TString::Format("%s;#it{p}_{T,jet1};#it{p}_{T,lead trk}",histName.Data());
 175     fh2PtJet1VsLeadPtAllSel[i] = new TH2F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,20,0.,20.);
 176     fOutput->Add(fh2PtJet1VsLeadPtAllSel[i]);
 177
 178     histName = TString::Format("fh2PtJet1VsLeadPtTagged_%d",i);
 179     histTitle = TString::Format("%s;#it{p}_{T,jet1};#it{p}_{T,lead trk}",histName.Data());
 180     fh2PtJet1VsLeadPtTagged[i] =  new TH2F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,20,0.,20.);
 181     fOutput->Add(fh2PtJet1VsLeadPtTagged[i]);
 182
 183     histName = TString::Format("fh2PtJet1VsPtJet2_%d",i);
 184     histTitle = TString::Format("%s;#it{p}_{T,jet1};#it{p}_{T,jet2}",histName.Data());
 185     fh2PtJet1VsPtJet2[i] = new TH2F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,nBinsPt,minPt,maxPt);
 186     fOutput->Add(fh2PtJet1VsPtJet2[i]);
 187
 188   }
 189
 190   fh3PtJetDEtaDPhiConst = new TH3F("fh3PtJetDEtaDPhiConst","fh3PtJetDEtaDPhiConst;pT;#Delta #eta;#Delta #varphi",nBinsPt,minPt,maxPt,nBinsDEta,-1.,1.,nBinsDPhi,-1.,1.);
 191   fOutput->Add(fh3PtJetDEtaDPhiConst);
 192
 193   fh2PtJetDRConst = new TH2F("fh2PtJetDRConst","fh2PtJetDRConst;pT;#Delta R",nBinsPt,minPt,maxPt,100,0.,1.);
 194   fOutput->Add(fh2PtJetDRConst);
 195
 196   fh3PtJetAreaDRConst = new TH3F("fh3PtJetAreaDRConst","fh3PtJetAreaDRConst;pT;A;#Delta R",nBinsPt,minPt,maxPt,100,0.,1.,100,0.,1.);
 197   fOutput->Add(fh3PtJetAreaDRConst);
 198
 199   // =========== Switch on Sumw2 for all histos ===========
 200   for (Int_t i=0; i<fOutput->GetEntries(); ++i) {
 201     TH1 *h1 = dynamic_cast<TH1*>(fOutput->At(i));
 202     if (h1){
 203       h1->Sumw2();
 204       continue;
 205     }
 206     THnSparse *hn = dynamic_cast<THnSparse*>(fOutput->At(i));
 207     if(hn)hn->Sumw2();
 208   }
 209
 210   TH1::AddDirectory(oldStatus);
 211
 212   PostData(1, fOutput); // Post data for ALL output slots > 0 here.
 213 }
 214
 215 //________________________________________________________________________
 216 Bool_t AliAnalysisTaskEmcalJetTagger::Run()
 217 {
 218   // Run analysis code here, if needed. It will be executed before FillHistograms().
 219
 220   MatchJetsGeo(fContainerBase,fContainerTag,0,0.3,2);
 221
 222   //  if(fJetTaggingMethod==kFraction)
 223
 224   return kTRUE;
 225 }
 226
 227 //________________________________________________________________________
 228 Bool_t AliAnalysisTaskEmcalJetTagger::FillHistograms()
 229 {
 230   // Fill histograms.
 231
 232   AliEmcalJet *jet1 = NULL;
 233   AliJetContainer *jetCont = GetJetContainer(fContainerBase);
 234   if(!jetCont) return kFALSE;
 235   jetCont->ResetCurrentID();
 236   while((jet1 = jetCont->GetNextAcceptJet())) {
 237     Double_t ptJet1 =  jet1->Pt() - jetCont->GetRhoVal()*jet1->Area();
 238     fh2PtJet1VsLeadPtAllSel[fCentBin]->Fill(ptJet1,jet1->MaxTrackPt());
 239
 240     //fill histo with angle between jet axis and constituents
 241     for(Int_t icc=0; icc<jet1->GetNumberOfTracks(); icc++) {
 242       AliVParticle *vp = static_cast<AliVParticle*>(jet1->TrackAt(icc, jetCont->GetParticleContainer()->GetArray()));//fTracks));
 243       if(!vp) continue;
 244       Double_t dEta = jet1->Eta()-vp->Eta();
 245       Double_t dPhi = jet1->Phi()-vp->Phi();
 246       if(dPhi<TMath::Pi()) dPhi+=TMath::TwoPi();
 247       if(dPhi>TMath::Pi()) dPhi-=TMath::TwoPi();
 248       fh3PtJetDEtaDPhiConst->Fill(ptJet1,dEta,dPhi);
 249
 250       Double_t dR = TMath::Sqrt(dPhi*dPhi+dEta*dEta);
 251       fh2PtJetDRConst->Fill(ptJet1,dR);
 252       fh3PtJetAreaDRConst->Fill(ptJet1,jet1->Area(),dR);
 253     }
 254
 255     if(jet1->GetTagStatus()<1 && fJetTaggingType==kTag)
 256       continue;
 257
 258     AliEmcalJet *jet2 = NULL;
 259     if(fJetTaggingType==kTag)     jet2 = jet1->GetTaggedJet();
 260     if(fJetTaggingType==kClosest) jet2 = jet1->ClosestJet();
 261     if(!jet2) continue;
 262
 263     Double_t ptJet2 =  jet2->Pt() - GetRhoVal(fContainerTag)*jet2->Area();
 264     Double_t fraction = jetCont->GetFractionSharedPt(jet1);
 265     fh2PtJet2VsFraction[fCentBin]->Fill(ptJet2,fraction);
 266
 267     if(fraction<fMinFractionShared && fJetTaggingType==kClosest)
 268       continue;
 269
 270     fh2PtJet1VsLeadPtTagged[fCentBin]->Fill(ptJet1,jet1->MaxTrackPt());
 271     fh2PtJet1VsPtJet2[fCentBin]->Fill(ptJet1,ptJet2);
 272
 273     Double_t dPhi = GetDeltaPhi(jet1->Phi(),jet2->Phi());
 274     if(dPhi>TMath::Pi())
 275       dPhi -= TMath::TwoPi();
 276     if(dPhi<(-1.*TMath::Pi()))
 277       dPhi += TMath::TwoPi();
 278
 279     fh3PtJet1VsDeltaEtaDeltaPhi[fCentBin]->Fill(ptJet1,jet1->Eta()-jet2->Eta(),dPhi);
 280     fh2PtJet1VsDeltaR[fCentBin]->Fill(ptJet1,GetDeltaR(jet1,jet2));
 281   }
 282   return kTRUE;
 283 }
 284
 285 //________________________________________________________________________
 286 void AliAnalysisTaskEmcalJetTagger::ResetTagging(const Int_t c) {
 287
 288   //Reset tagging of container c
 289
 290   for(int i = 0;i<GetNJets(c);i++){
 291     AliEmcalJet *jet = static_cast<AliEmcalJet*>(GetJetFromArray(i, c));
 292     if(fJetTaggingType==kClosest)
 293       jet->ResetMatching();
 294     else if(fJetTaggingType==kTag) {
 295       jet->SetTaggedJet(0x0);
 296       jet->SetTagStatus(-1);
 297     }
 298   }
 299 }
 300
 301 //________________________________________________________________________
 302 void AliAnalysisTaskEmcalJetTagger::MatchJetsGeo(Int_t c1, Int_t c2,
 303                                                  Int_t iDebug, Float_t maxDist, Int_t type, Bool_t bReset) {
 304
 305   //
 306   // Match the full jets to the corresponding charged jets
 307   // Translation of AliAnalysisHelperJetTasks::GetClosestJets to AliEmcalJet objects
 308   // type: 0 = use acceptance cuts of container  1 = allow 0.1 one more for c2 in eta 2 = allow 0.1 more in eta and phi for c2
 309
 310   if(c1<0) c1 = fContainerBase;
 311   if(c2<0) c2 = fContainerTag;
 312
 313   const Int_t nJets1 = GetNJets(c1);
 314   const Int_t nJets2 = GetNJets(c2);
 315
 316   if(nJets1==0 || nJets2==0) return;
 317
 318   if(bReset) {
 319     ResetTagging(c1);
 320     ResetTagging(c2);
 321   }
 322   fMatchingDone = kFALSE;
 323
 324   TArrayI faMatchIndex1;
 325   faMatchIndex1.Set(nJets2+1);
 326   faMatchIndex1.Reset(-1);
 327
 328   TArrayI faMatchIndex2;
 329   faMatchIndex2.Set(nJets1+1);
 330   faMatchIndex2.Reset(-1);
 331
 332   static TArrayS iFlag(nJets1*nJets2);
 333   if(iFlag.GetSize()<(nJets1*nJets2)){
 334     iFlag.Set(nJets1*nJets2+1);
 335   }
 336   iFlag.Reset(0);
 337
 338
 339   AliJetContainer *cont2 = GetJetContainer(c2);
 340
 341   // find the closest distance to the full jet
 342   for(int i = 0;i<nJets1;i++){
 343
 344     AliEmcalJet *jet1 = static_cast<AliEmcalJet*>(GetAcceptJetFromArray(i, c1));
 345     if(!jet1) continue;
 346
 347     Float_t dist = maxDist;
 348
 349     for(int j = 0;j <nJets2; j++){
 350       AliEmcalJet *jet2 = 0x0;
 351       if(type==0)
 352         jet2 = static_cast<AliEmcalJet*>(GetAcceptJetFromArray(j, c2));
 353       else {
 354         jet2 = static_cast<AliEmcalJet*>(GetJetFromArray(j, c2));
 355         if(!jet2) continue;
 356         if(type>0) {
 357           if(jet2->Eta()<(cont2->GetJetEtaMin()-0.1) || jet2->Eta()>(cont2->GetJetEtaMax()+0.1))
 358             continue;
 359           if(type==2) {
 360             if(jet2->Phi()<(cont2->GetJetPhiMin()-0.1) || jet2->Phi()>(cont2->GetJetPhiMax()+0.1))
 361               continue;
 362           }
 363         }
 364       }
 365       if(!jet2)
 366         continue;
 367
 368       Double_t dR = GetDeltaR(jet1,jet2);
 369       if(dR<dist && dR<maxDist){
 370         faMatchIndex2[i]=j;
 371         dist = dR;
 372       }
 373     }//j jet loop
 374     if(faMatchIndex2[i]>=0) {
 375       iFlag[i*nJets2+faMatchIndex2[i]]+=1;//j closest to i
 376       if(iDebug>10) Printf("Full Distance (%d)--(%d) %3.3f flag[%d] = %d",i,faMatchIndex2[i],dist,i*nJets2+faMatchIndex2[i],iFlag[i*nJets2+faMatchIndex2[i]]);
 377     }
 378
 379   }//i jet loop
 380
 381
 382   // other way around
 383   for(int j = 0;j<nJets2;j++){
 384     AliEmcalJet *jet2 = 0x0;
 385     if(type==0)
 386       jet2 = static_cast<AliEmcalJet*>(GetAcceptJetFromArray(j, c2));
 387     else {
 388       jet2 = static_cast<AliEmcalJet*>(GetJetFromArray(j, c2));
 389       if(!jet2) continue;;
 390       if(type>0) {
 391         if(jet2->Eta()<(cont2->GetJetEtaMin()-0.1) || jet2->Eta()>(cont2->GetJetEtaMax()+0.1))
 392           continue;
 393         if(type==2) {
 394           if(jet2->Phi()<(cont2->GetJetPhiMin()-0.1) || jet2->Phi()>(cont2->GetJetPhiMax()+0.1))
 395             continue;
 396         }
 397       }
 398     }
 399     if(!jet2)
 400       continue;
 401
 402     Float_t dist = maxDist;
 403     for(int i = 0;i<nJets1;i++){
 404       AliEmcalJet *jet1 = static_cast<AliEmcalJet*>(GetAcceptJetFromArray(i, c1));
 405       if(!jet1)
 406         continue;
 407
 408       Double_t dR = GetDeltaR(jet1,jet2);
 409       if(dR<dist && dR<maxDist){
 410         faMatchIndex1[j]=i;
 411         dist = dR;
 412       }
 413     }
 414     if(faMatchIndex1[j]>=0) {
 415       iFlag[faMatchIndex1[j]*nJets2+j]+=2;//i closest to j
 416       if(iDebug>10) Printf("Other way Distance (%d)--(%d) %3.3f flag[%d] = %d",faMatchIndex1[j],j,dist,faMatchIndex1[j]*nJets2+j,iFlag[faMatchIndex1[j]*nJets2+j]);
 417     }
 418
 419   }
 420
 421   // check for "true" correlations
 422   for(int i = 0;i<nJets1;i++){
 423     AliEmcalJet *jet1 = static_cast<AliEmcalJet*>(GetJetFromArray(i, c1));
 424     for(int j = 0;j<nJets2;j++){
 425       AliEmcalJet *jet2 = static_cast<AliEmcalJet*>(GetJetFromArray(j, c2));
 426       AliDebug(11,Form("%s: Flag[%d][%d] %d ",GetName(),i,j,iFlag[i*nJets2+j]));
 427
 428       // we have a uniqe correlation
 429       if(iFlag[i*nJets2+j]==3){
 430
 431         Double_t dR = GetDeltaR(jet1,jet2);
 432         if(iDebug>1) Printf("closest jets %d  %d  dR =  %f",j,i,dR);
 433
 434         if(fJetTaggingType==kTag) {
 435           jet1->SetTaggedJet(jet2);
 436           jet1->SetTagStatus(1);
 437
 438           jet2->SetTaggedJet(jet1);
 439           jet2->SetTagStatus(1);
 440         }
 441         else if(fJetTaggingType==kClosest) {
 442           jet1->SetClosestJet(jet2,dR);
 443           jet2->SetClosestJet(jet1,dR);
 444         }
 445       }
 446     }
 447   }
 448   fMatchingDone = kTRUE;
 449 }
 450
 451 //________________________________________________________________________
 452 Double_t AliAnalysisTaskEmcalJetTagger::GetDeltaR(const AliEmcalJet* jet1, const AliEmcalJet* jet2) const {
 453   //
 454   // Helper function to calculate the distance between two jets
 455   //
 456
 457   Double_t dPhi = jet1->Phi() - jet2->Phi();
 458   if(dPhi>TMath::Pi())
 459     dPhi -= TMath::TwoPi();
 460   if(dPhi<(-1.*TMath::Pi()))
 461     dPhi += TMath::TwoPi();
 462   Double_t dEta = jet1->Eta() - jet2->Eta();
 463   Double_t dR = TMath::Sqrt(dPhi*dPhi+dEta*dEta);
 464   return dR;
 465 }
 466
 467 //________________________________________________________________________
 468 Double_t AliAnalysisTaskEmcalJetTagger::GetDeltaPhi(const AliEmcalJet* jet1, const AliEmcalJet* jet2) {
 469   //
 470   // Calculate azimuthal angle between the axises of the jets
 471   //
 472
 473   return GetDeltaPhi(jet1->Phi(),jet2->Phi());
 474
 475 }
 476
 477 //________________________________________________________________________
 478 Double_t AliAnalysisTaskEmcalJetTagger::GetDeltaPhi(Double_t phi1,Double_t phi2) {
 479   //
 480   // Calculate azimuthal angle between the axises of the jets
 481   //
 482
 483   Double_t dPhi = phi1-phi2;
 484
 485   if(dPhi <-0.5*TMath::Pi())  dPhi += TMath::TwoPi();
 486   if(dPhi > 1.5*TMath::Pi())  dPhi -= TMath::TwoPi();
 487
 488   return dPhi;
 489 }
 490
 491 //________________________________________________________________________
 492 Double_t AliAnalysisTaskEmcalJetTagger::GetFractionSharedPt(const AliEmcalJet *jet1, const AliEmcalJet *jet2) const
 493 {
 494   //
 495   // Get fraction of shared pT between matched full and charged jet
 496   // Uses charged jet pT as baseline: fraction = \Sum_{const,full jet} pT,const,i / pT,jet,ch
 497   //
 498
 499   Double_t fraction = 0.;
 500   Double_t jetPt2 = jet2->Pt();
 501
 502   if(jetPt2>0) {
 503
 504     AliDebug(2,Form("%s: nConstituents_jet1: %d, nConstituents_jet2: %d, tracks_jet1: %d  tracks_jet2: %d clusters_jet1: %d clusters_jet2: %d",GetName(),jet1->GetNumberOfConstituents(),jet2->GetNumberOfConstituents(),jet1->GetNumberOfTracks(),jet2->GetNumberOfTracks(),jet1->GetNumberOfClusters(),jet2->GetNumberOfClusters()));
 505
 506     Double_t sumPt = 0.;
 507     AliVParticle *vpf = 0x0;
 508     Int_t iFound = 0;
 509     for(Int_t icc=0; icc<jet2->GetNumberOfTracks(); icc++) {
 510       Int_t idx = (Int_t)jet2->TrackAt(icc);
 511       iFound = 0;
 512       for(Int_t icf=0; icf<jet1->GetNumberOfTracks(); icf++) {
 513         if(idx == jet1->TrackAt(icf) && iFound==0 ) {
 514           iFound=1;
 515           vpf = static_cast<AliVParticle*>(jet1->TrackAt(icf, fTracks));
 516           if(vpf) sumPt += vpf->Pt();
 517           continue;
 518         }
 519       }
 520     }
 521     fraction = sumPt/jetPt2;
 522   } else fraction = -1.;
 523   return fraction;
 524 }
 525
 526 //________________________________________________________________________
 527 Bool_t AliAnalysisTaskEmcalJetTagger::RetrieveEventObjects() {
 528   //
 529   // retrieve event objects
 530   //
 531
 532   if (!AliAnalysisTaskEmcalJet::RetrieveEventObjects())
 533     return kFALSE;
 534
 535   return kTRUE;
 536
 537 }
 538
 539 //_______________________________________________________________________
 540 void AliAnalysisTaskEmcalJetTagger::Terminate(Option_t *)
 541 {
 542   // Called once at the end of the analysis.
 543 }
 544