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   fh2PtJet2VsRelPt(0),
  56   fh3PtJetDEtaDPhiConst(0),
  57   fh2PtJetDRConst(0),
  58   fh3PtJetAreaDRConst(0)
  59 {
  60   // Default constructor.
  61
  62   fh3PtJet1VsDeltaEtaDeltaPhi  = new TH3F*[fNcentBins];
  63   fh2PtJet1VsDeltaR            = new TH2F*[fNcentBins];
  64   fh2PtJet2VsFraction          = new TH2F*[fNcentBins];
  65   fh2PtJet1VsLeadPtAllSel      = new TH2F*[fNcentBins];
  66   fh2PtJet1VsLeadPtTagged      = new TH2F*[fNcentBins];
  67   fh2PtJet1VsPtJet2            = new TH2F*[fNcentBins];
  68   fh2PtJet2VsRelPt             = new TH2F*[fNcentBins];
  69
  70   for (Int_t i = 0; i < fNcentBins; i++) {
  71     fh3PtJet1VsDeltaEtaDeltaPhi[i] = 0;
  72     fh2PtJet1VsDeltaR[i]           = 0;
  73     fh2PtJet2VsFraction[i]         = 0;
  74     fh2PtJet1VsLeadPtAllSel[i]     = 0;
  75     fh2PtJet1VsLeadPtTagged[i]     = 0;
  76     fh2PtJet1VsPtJet2[i]           = 0;
  77     fh2PtJet2VsRelPt[i]            = 0;
  78   }
  79
  80   SetMakeGeneralHistograms(kTRUE);
  81 }
  82
  83 //________________________________________________________________________
  84 AliAnalysisTaskEmcalJetTagger::AliAnalysisTaskEmcalJetTagger(const char *name) :
  85   AliAnalysisTaskEmcalJet(name, kTRUE),
  86   fJetTaggingType(kTag),
  87   fJetTaggingMethod(kGeo),
  88   fContainerBase(0),
  89   fContainerTag(1),
  90   fMinFractionShared(0),
  91   fMatchingDone(0),
  92   fh3PtJet1VsDeltaEtaDeltaPhi(0),
  93   fh2PtJet1VsDeltaR(0),
  94   fh2PtJet2VsFraction(0),
  95   fh2PtJet1VsLeadPtAllSel(0),
  96   fh2PtJet1VsLeadPtTagged(0),
  97   fh2PtJet1VsPtJet2(0),
  98   fh2PtJet2VsRelPt(0),
  99   fh3PtJetDEtaDPhiConst(0),
 100   fh2PtJetDRConst(0),
 101   fh3PtJetAreaDRConst(0)
 102 {
 103   // Standard constructor.
 104
 105   fh3PtJet1VsDeltaEtaDeltaPhi = new TH3F*[fNcentBins];
 106   fh2PtJet1VsDeltaR           = new TH2F*[fNcentBins];
 107   fh2PtJet2VsFraction         = new TH2F*[fNcentBins];
 108   fh2PtJet1VsLeadPtAllSel     = new TH2F*[fNcentBins];
 109   fh2PtJet1VsLeadPtTagged     = new TH2F*[fNcentBins];
 110   fh2PtJet1VsPtJet2           = new TH2F*[fNcentBins];
 111   fh2PtJet2VsRelPt            = new TH2F*[fNcentBins];
 112
 113   for (Int_t i = 0; i < fNcentBins; i++) {
 114     fh3PtJet1VsDeltaEtaDeltaPhi[i] = 0;
 115     fh2PtJet1VsDeltaR[i]           = 0;
 116     fh2PtJet2VsFraction[i]         = 0;
 117     fh2PtJet1VsLeadPtAllSel[i]     = 0;
 118     fh2PtJet1VsLeadPtTagged[i]     = 0;
 119     fh2PtJet1VsPtJet2[i]           = 0;
 120     fh2PtJet2VsRelPt[i]            = 0;
 121   }
 122
 123   SetMakeGeneralHistograms(kTRUE);
 124 }
 125
 126 //________________________________________________________________________
 127 AliAnalysisTaskEmcalJetTagger::~AliAnalysisTaskEmcalJetTagger()
 128 {
 129   // Destructor.
 130 }
 131
 132 //________________________________________________________________________
 133 void AliAnalysisTaskEmcalJetTagger::UserCreateOutputObjects()
 134 {
 135   // Create user output.
 136
 137   AliAnalysisTaskEmcalJet::UserCreateOutputObjects();
 138
 139   Bool_t oldStatus = TH1::AddDirectoryStatus();
 140   TH1::AddDirectory(kFALSE);
 141
 142   const Int_t nBinsPt          = 250;
 143   const Int_t nBinsDPhi        = 100;
 144   const Int_t nBinsDEta        = 100;
 145   const Int_t nBinsDR          = 50;
 146   const Int_t nBinsFraction    = 101;
 147
 148   const Double_t minPt       = -50.;
 149   const Double_t maxPt       = 200.;
 150   const Double_t minDPhi     = -0.5;
 151   const Double_t maxDPhi     =  0.5;
 152   const Double_t minDEta     = -0.5;
 153   const Double_t maxDEta     =  0.5;
 154   const Double_t minDR       =  0.;
 155   const Double_t maxDR       =  0.5;
 156   const Double_t minFraction =  -0.005;
 157   const Double_t maxFraction =  1.005;
 158
 159   TString histName = "";
 160   TString histTitle = "";
 161   for (Int_t i = 0; i < fNcentBins; i++) {
 162
 163     histName = TString::Format("fh3PtJet1VsDeltaEtaDeltaPhi_%d",i);
 164     histTitle = TString::Format("%s;#it{p}_{T,jet1};#it{#Delta#eta};#it{#Delta#varphi}",histName.Data());
 165     fh3PtJet1VsDeltaEtaDeltaPhi[i] = new TH3F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,nBinsDEta,minDEta,maxDEta,nBinsDPhi,minDPhi,maxDPhi);
 166     fOutput->Add(fh3PtJet1VsDeltaEtaDeltaPhi[i]);
 167
 168     histName = TString::Format("fh2PtJet1VsDeltaR_%d",i);
 169     histTitle = TString::Format("%s;#it{p}_{T,jet1};#it{#Delta R}",histName.Data());
 170     fh2PtJet1VsDeltaR[i] = new TH2F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,nBinsDR,minDR,maxDR);
 171     fOutput->Add(fh2PtJet1VsDeltaR[i]);
 172
 173     histName = TString::Format("fh2PtJet2VsFraction_%d",i);
 174     histTitle = TString::Format("%s;#it{p}_{T,jet2};#it{f}_{shared}",histName.Data());
 175     fh2PtJet2VsFraction[i] = new TH2F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,nBinsFraction,minFraction,maxFraction);
 176     fOutput->Add(fh2PtJet2VsFraction[i]);
 177
 178     histName = TString::Format("fh2PtJet1VsLeadPtAllSel_%d",i);
 179     histTitle = TString::Format("%s;#it{p}_{T,jet1};#it{p}_{T,lead trk}",histName.Data());
 180     fh2PtJet1VsLeadPtAllSel[i] = new TH2F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,20,0.,20.);
 181     fOutput->Add(fh2PtJet1VsLeadPtAllSel[i]);
 182
 183     histName = TString::Format("fh2PtJet1VsLeadPtTagged_%d",i);
 184     histTitle = TString::Format("%s;#it{p}_{T,jet1};#it{p}_{T,lead trk}",histName.Data());
 185     fh2PtJet1VsLeadPtTagged[i] =  new TH2F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,20,0.,20.);
 186     fOutput->Add(fh2PtJet1VsLeadPtTagged[i]);
 187
 188     histName = TString::Format("fh2PtJet1VsPtJet2_%d",i);
 189     histTitle = TString::Format("%s;#it{p}_{T,jet1};#it{p}_{T,jet2}",histName.Data());
 190     fh2PtJet1VsPtJet2[i] = new TH2F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,nBinsPt,minPt,maxPt);
 191     fOutput->Add(fh2PtJet1VsPtJet2[i]);
 192
 193     histName = TString::Format("fh2PtJet2VsRelPt_%d",i);
 194     histTitle = TString::Format("%s;#it{p}_{T,jet2};(#it{p}_{T,jet2}-#it{p}_{T,jet1})/#it{p}_{T,jet1}",histName.Data());
 195     fh2PtJet2VsRelPt[i] = new TH2F(histName.Data(),histTitle.Data(),nBinsPt,minPt,maxPt,241,-2.41,2.41);
 196     fOutput->Add(fh2PtJet2VsRelPt[i]);
 197   }
 198
 199   fh3PtJetDEtaDPhiConst = new TH3F("fh3PtJetDEtaDPhiConst","fh3PtJetDEtaDPhiConst;pT;#Delta #eta;#Delta #varphi",nBinsPt,minPt,maxPt,nBinsDEta,-1.,1.,nBinsDPhi,-1.,1.);
 200   fOutput->Add(fh3PtJetDEtaDPhiConst);
 201
 202   fh2PtJetDRConst = new TH2F("fh2PtJetDRConst","fh2PtJetDRConst;pT;#Delta R",nBinsPt,minPt,maxPt,100,0.,1.);
 203   fOutput->Add(fh2PtJetDRConst);
 204
 205   fh3PtJetAreaDRConst = new TH3F("fh3PtJetAreaDRConst","fh3PtJetAreaDRConst;pT;A;#Delta R",nBinsPt,minPt,maxPt,100,0.,1.,100,0.,1.);
 206   fOutput->Add(fh3PtJetAreaDRConst);
 207
 208   // =========== Switch on Sumw2 for all histos ===========
 209   for (Int_t i=0; i<fOutput->GetEntries(); ++i) {
 210     TH1 *h1 = dynamic_cast<TH1*>(fOutput->At(i));
 211     if (h1){
 212       h1->Sumw2();
 213       continue;
 214     }
 215     THnSparse *hn = dynamic_cast<THnSparse*>(fOutput->At(i));
 216     if(hn)hn->Sumw2();
 217   }
 218
 219   TH1::AddDirectory(oldStatus);
 220
 221   PostData(1, fOutput); // Post data for ALL output slots > 0 here.
 222 }
 223
 224 //________________________________________________________________________
 225 Bool_t AliAnalysisTaskEmcalJetTagger::Run()
 226 {
 227   // Run analysis code here, if needed. It will be executed before FillHistograms().
 228
 229   MatchJetsGeo(fContainerBase,fContainerTag,0,0.3,2);
 230
 231   //  if(fJetTaggingMethod==kFraction)
 232
 233   return kTRUE;
 234 }
 235
 236 //________________________________________________________________________
 237 Bool_t AliAnalysisTaskEmcalJetTagger::FillHistograms()
 238 {
 239   // Fill histograms.
 240
 241   AliEmcalJet *jet1 = NULL;
 242   AliJetContainer *jetCont = GetJetContainer(fContainerBase);
 243   if(!jetCont) return kFALSE;
 244   jetCont->ResetCurrentID();
 245   while((jet1 = jetCont->GetNextAcceptJet())) {
 246     Double_t ptJet1 =  jet1->Pt() - jetCont->GetRhoVal()*jet1->Area();
 247     fh2PtJet1VsLeadPtAllSel[fCentBin]->Fill(ptJet1,jet1->MaxTrackPt());
 248
 249     //fill histo with angle between jet axis and constituents
 250     for(Int_t icc=0; icc<jet1->GetNumberOfTracks(); icc++) {
 251       AliVParticle *vp = static_cast<AliVParticle*>(jet1->TrackAt(icc, jetCont->GetParticleContainer()->GetArray()));//fTracks));
 252       if(!vp) continue;
 253       Double_t dEta = jet1->Eta()-vp->Eta();
 254       Double_t dPhi = jet1->Phi()-vp->Phi();
 255       if(dPhi<TMath::Pi()) dPhi+=TMath::TwoPi();
 256       if(dPhi>TMath::Pi()) dPhi-=TMath::TwoPi();
 257       fh3PtJetDEtaDPhiConst->Fill(ptJet1,dEta,dPhi);
 258
 259       Double_t dR = TMath::Sqrt(dPhi*dPhi+dEta*dEta);
 260       fh2PtJetDRConst->Fill(ptJet1,dR);
 261       fh3PtJetAreaDRConst->Fill(ptJet1,jet1->Area(),dR);
 262     }
 263
 264     if(jet1->GetTagStatus()<1 && fJetTaggingType==kTag)
 265       continue;
 266
 267     AliEmcalJet *jet2 = NULL;
 268     if(fJetTaggingType==kTag)     jet2 = jet1->GetTaggedJet();
 269     if(fJetTaggingType==kClosest) jet2 = jet1->ClosestJet();
 270     if(!jet2) continue;
 271
 272     Double_t ptJet2 =  jet2->Pt() - GetRhoVal(fContainerTag)*jet2->Area();
 273     Double_t fraction = jetCont->GetFractionSharedPt(jet1);
 274     fh2PtJet2VsFraction[fCentBin]->Fill(ptJet2,fraction);
 275
 276     if(fraction<fMinFractionShared && fJetTaggingType==kClosest)
 277       continue;
 278
 279     fh2PtJet1VsLeadPtTagged[fCentBin]->Fill(ptJet1,jet1->MaxTrackPt());
 280     fh2PtJet1VsPtJet2[fCentBin]->Fill(ptJet1,ptJet2);
 281     if(ptJet2>0.) fh2PtJet2VsRelPt[fCentBin]->Fill(ptJet2,(ptJet1-ptJet2)/ptJet2);
 282
 283     Double_t dPhi = GetDeltaPhi(jet1->Phi(),jet2->Phi());
 284     if(dPhi>TMath::Pi())
 285       dPhi -= TMath::TwoPi();
 286     if(dPhi<(-1.*TMath::Pi()))
 287       dPhi += TMath::TwoPi();
 288
 289     fh3PtJet1VsDeltaEtaDeltaPhi[fCentBin]->Fill(ptJet1,jet1->Eta()-jet2->Eta(),dPhi);
 290     fh2PtJet1VsDeltaR[fCentBin]->Fill(ptJet1,GetDeltaR(jet1,jet2));
 291   }
 292   return kTRUE;
 293 }
 294
 295 //________________________________________________________________________
 296 void AliAnalysisTaskEmcalJetTagger::ResetTagging(const Int_t c) {
 297
 298   //Reset tagging of container c
 299
 300   for(int i = 0;i<GetNJets(c);i++){
 301     AliEmcalJet *jet = static_cast<AliEmcalJet*>(GetJetFromArray(i, c));
 302     if(fJetTaggingType==kClosest)
 303       jet->ResetMatching();
 304     else if(fJetTaggingType==kTag) {
 305       jet->SetTaggedJet(0x0);
 306       jet->SetTagStatus(-1);
 307     }
 308   }
 309 }
 310
 311 //________________________________________________________________________
 312 void AliAnalysisTaskEmcalJetTagger::MatchJetsGeo(Int_t c1, Int_t c2,
 313                                                  Int_t iDebug, Float_t maxDist, Int_t type, Bool_t bReset) {
 314
 315   //
 316   // Match the full jets to the corresponding charged jets
 317   // Translation of AliAnalysisHelperJetTasks::GetClosestJets to AliEmcalJet objects
 318   // 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
 319
 320   if(c1<0) c1 = fContainerBase;
 321   if(c2<0) c2 = fContainerTag;
 322
 323   const Int_t nJets1 = GetNJets(c1);
 324   const Int_t nJets2 = GetNJets(c2);
 325
 326   if(nJets1==0 || nJets2==0) return;
 327
 328   if(bReset) {
 329     ResetTagging(c1);
 330     ResetTagging(c2);
 331   }
 332   fMatchingDone = kFALSE;
 333
 334   TArrayI faMatchIndex1;
 335   faMatchIndex1.Set(nJets2+1);
 336   faMatchIndex1.Reset(-1);
 337
 338   TArrayI faMatchIndex2;
 339   faMatchIndex2.Set(nJets1+1);
 340   faMatchIndex2.Reset(-1);
 341
 342   static TArrayS iFlag(nJets1*nJets2);
 343   if(iFlag.GetSize()<(nJets1*nJets2)){
 344     iFlag.Set(nJets1*nJets2+1);
 345   }
 346   iFlag.Reset(0);
 347
 348
 349   AliJetContainer *cont2 = GetJetContainer(c2);
 350
 351   // find the closest distance to the full jet
 352   for(int i = 0;i<nJets1;i++){
 353
 354     AliEmcalJet *jet1 = static_cast<AliEmcalJet*>(GetAcceptJetFromArray(i, c1));
 355     if(!jet1) continue;
 356
 357     Float_t dist = maxDist;
 358
 359     for(int j = 0;j <nJets2; j++){
 360       AliEmcalJet *jet2 = 0x0;
 361       if(type==0)
 362         jet2 = static_cast<AliEmcalJet*>(GetAcceptJetFromArray(j, c2));
 363       else {
 364         jet2 = static_cast<AliEmcalJet*>(GetJetFromArray(j, c2));
 365         if(!jet2) continue;
 366         if(type>0) {
 367           if(jet2->Eta()<(cont2->GetJetEtaMin()-0.1) || jet2->Eta()>(cont2->GetJetEtaMax()+0.1))
 368             continue;
 369           if(type==2) {
 370             if(jet2->Phi()<(cont2->GetJetPhiMin()-0.1) || jet2->Phi()>(cont2->GetJetPhiMax()+0.1))
 371               continue;
 372           }
 373         }
 374       }
 375       if(!jet2)
 376         continue;
 377
 378       Double_t dR = GetDeltaR(jet1,jet2);
 379       if(dR<dist && dR<maxDist){
 380         faMatchIndex2[i]=j;
 381         dist = dR;
 382       }
 383     }//j jet loop
 384     if(faMatchIndex2[i]>=0) {
 385       iFlag[i*nJets2+faMatchIndex2[i]]+=1;//j closest to i
 386       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]]);
 387     }
 388
 389   }//i jet loop
 390
 391
 392   // other way around
 393   for(int j = 0;j<nJets2;j++){
 394     AliEmcalJet *jet2 = 0x0;
 395     if(type==0)
 396       jet2 = static_cast<AliEmcalJet*>(GetAcceptJetFromArray(j, c2));
 397     else {
 398       jet2 = static_cast<AliEmcalJet*>(GetJetFromArray(j, c2));
 399       if(!jet2) continue;;
 400       if(type>0) {
 401         if(jet2->Eta()<(cont2->GetJetEtaMin()-0.1) || jet2->Eta()>(cont2->GetJetEtaMax()+0.1))
 402           continue;
 403         if(type==2) {
 404           if(jet2->Phi()<(cont2->GetJetPhiMin()-0.1) || jet2->Phi()>(cont2->GetJetPhiMax()+0.1))
 405             continue;
 406         }
 407       }
 408     }
 409     if(!jet2)
 410       continue;
 411
 412     Float_t dist = maxDist;
 413     for(int i = 0;i<nJets1;i++){
 414       AliEmcalJet *jet1 = static_cast<AliEmcalJet*>(GetAcceptJetFromArray(i, c1));
 415       if(!jet1)
 416         continue;
 417
 418       Double_t dR = GetDeltaR(jet1,jet2);
 419       if(dR<dist && dR<maxDist){
 420         faMatchIndex1[j]=i;
 421         dist = dR;
 422       }
 423     }
 424     if(faMatchIndex1[j]>=0) {
 425       iFlag[faMatchIndex1[j]*nJets2+j]+=2;//i closest to j
 426       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]);
 427     }
 428
 429   }
 430
 431   // check for "true" correlations
 432   for(int i = 0;i<nJets1;i++){
 433     AliEmcalJet *jet1 = static_cast<AliEmcalJet*>(GetJetFromArray(i, c1));
 434     for(int j = 0;j<nJets2;j++){
 435       AliEmcalJet *jet2 = static_cast<AliEmcalJet*>(GetJetFromArray(j, c2));
 436       AliDebug(11,Form("%s: Flag[%d][%d] %d ",GetName(),i,j,iFlag[i*nJets2+j]));
 437
 438       // we have a uniqe correlation
 439       if(iFlag[i*nJets2+j]==3){
 440
 441         Double_t dR = GetDeltaR(jet1,jet2);
 442         if(iDebug>1) Printf("closest jets %d  %d  dR =  %f",j,i,dR);
 443
 444         if(fJetTaggingType==kTag) {
 445           jet1->SetTaggedJet(jet2);
 446           jet1->SetTagStatus(1);
 447
 448           jet2->SetTaggedJet(jet1);
 449           jet2->SetTagStatus(1);
 450         }
 451         else if(fJetTaggingType==kClosest) {
 452           jet1->SetClosestJet(jet2,dR);
 453           jet2->SetClosestJet(jet1,dR);
 454         }
 455       }
 456     }
 457   }
 458   fMatchingDone = kTRUE;
 459 }
 460
 461 //________________________________________________________________________
 462 Double_t AliAnalysisTaskEmcalJetTagger::GetDeltaR(const AliEmcalJet* jet1, const AliEmcalJet* jet2) const {
 463   //
 464   // Helper function to calculate the distance between two jets
 465   //
 466
 467   Double_t dPhi = jet1->Phi() - jet2->Phi();
 468   if(dPhi>TMath::Pi())
 469     dPhi -= TMath::TwoPi();
 470   if(dPhi<(-1.*TMath::Pi()))
 471     dPhi += TMath::TwoPi();
 472   Double_t dEta = jet1->Eta() - jet2->Eta();
 473   Double_t dR = TMath::Sqrt(dPhi*dPhi+dEta*dEta);
 474   return dR;
 475 }
 476
 477 //________________________________________________________________________
 478 Double_t AliAnalysisTaskEmcalJetTagger::GetDeltaPhi(const AliEmcalJet* jet1, const AliEmcalJet* jet2) {
 479   //
 480   // Calculate azimuthal angle between the axises of the jets
 481   //
 482
 483   return GetDeltaPhi(jet1->Phi(),jet2->Phi());
 484
 485 }
 486
 487 //________________________________________________________________________
 488 Double_t AliAnalysisTaskEmcalJetTagger::GetDeltaPhi(Double_t phi1,Double_t phi2) {
 489   //
 490   // Calculate azimuthal angle between the axises of the jets
 491   //
 492
 493   Double_t dPhi = phi1-phi2;
 494
 495   if(dPhi <-0.5*TMath::Pi())  dPhi += TMath::TwoPi();
 496   if(dPhi > 1.5*TMath::Pi())  dPhi -= TMath::TwoPi();
 497
 498   return dPhi;
 499 }
 500
 501 //________________________________________________________________________
 502 Double_t AliAnalysisTaskEmcalJetTagger::GetFractionSharedPt(const AliEmcalJet *jet1, const AliEmcalJet *jet2) const
 503 {
 504   //
 505   // Get fraction of shared pT between matched full and charged jet
 506   // Uses charged jet pT as baseline: fraction = \Sum_{const,full jet} pT,const,i / pT,jet,ch
 507   //
 508
 509   Double_t fraction = 0.;
 510   Double_t jetPt2 = jet2->Pt();
 511
 512   if(jetPt2>0) {
 513
 514     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()));
 515
 516     Double_t sumPt = 0.;
 517     AliVParticle *vpf = 0x0;
 518     Int_t iFound = 0;
 519     for(Int_t icc=0; icc<jet2->GetNumberOfTracks(); icc++) {
 520       Int_t idx = (Int_t)jet2->TrackAt(icc);
 521       iFound = 0;
 522       for(Int_t icf=0; icf<jet1->GetNumberOfTracks(); icf++) {
 523         if(idx == jet1->TrackAt(icf) && iFound==0 ) {
 524           iFound=1;
 525           vpf = static_cast<AliVParticle*>(jet1->TrackAt(icf, fTracks));
 526           if(vpf) sumPt += vpf->Pt();
 527           continue;
 528         }
 529       }
 530     }
 531     fraction = sumPt/jetPt2;
 532   } else fraction = -1.;
 533   return fraction;
 534 }
 535
 536 //________________________________________________________________________
 537 Bool_t AliAnalysisTaskEmcalJetTagger::RetrieveEventObjects() {
 538   //
 539   // retrieve event objects
 540   //
 541
 542   if (!AliAnalysisTaskEmcalJet::RetrieveEventObjects())
 543     return kFALSE;
 544
 545   return kTRUE;
 546
 547 }
 548
 549 //_______________________________________________________________________
 550 void AliAnalysisTaskEmcalJetTagger::Terminate(Option_t *)
 551 {
 552   // Called once at the end of the analysis.
 553 }
 554