PWGCF/EBYE/BalanceFunctions/AliAnalysisTaskBF.cxx

   1 #include "TChain.h"\r
   2 #include "TList.h"\r
   3 #include "TCanvas.h"\r
   4 #include "TLorentzVector.h"\r
   5 #include "TGraphErrors.h"\r
   6 #include "TH1F.h"\r
   7 #include "TH2F.h"\r
   8 #include "TArrayF.h"\r
   9 #include "TF1.h"\r
  10 #include "TRandom.h"\r
  11 \r
  12 #include "AliAnalysisTaskSE.h"\r
  13 #include "AliAnalysisManager.h"\r
  14 \r
  15 #include "AliESDVertex.h"\r
  16 #include "AliESDEvent.h"\r
  17 #include "AliESDInputHandler.h"\r
  18 #include "AliAODEvent.h"\r
  19 #include "AliAODTrack.h"\r
  20 #include "AliAODInputHandler.h"\r
  21 #include "AliGenEventHeader.h"\r
  22 #include "AliGenHijingEventHeader.h"\r
  23 #include "AliMCEventHandler.h"\r
  24 #include "AliMCEvent.h"\r
  25 #include "AliStack.h"\r
  26 #include "AliESDtrackCuts.h"\r
  27 \r
  28 #include "TH2D.h"                  \r
  29 #include "AliPID.h"                \r
  30 #include "AliPIDResponse.h"        \r
  31 #include "AliPIDCombined.h"        \r
  32 \r
  33 #include "AliAnalysisTaskBF.h"\r
  34 #include "AliBalance.h"\r
  35 \r
  36 \r
  37 // Analysis task for the BF code\r
  38 // Authors: Panos.Christakoglou@nikhef.nl\r
  39 \r
  40 ClassImp(AliAnalysisTaskBF)\r
  41 \r
  42 //________________________________________________________________________\r
  43 AliAnalysisTaskBF::AliAnalysisTaskBF(const char *name) \r
  44 : AliAnalysisTaskSE(name), \r
  45   fBalance(0),\r
  46   fRunShuffling(kFALSE),\r
  47   fShuffledBalance(0),\r
  48   fList(0),\r
  49   fListBF(0),\r
  50   fListBFS(0),\r
  51   fHistListPIDQA(0),\r
  52   fHistEventStats(0),\r
  53   fHistCentStats(0),\r
  54   fHistTriggerStats(0),\r
  55   fHistTrackStats(0),\r
  56   fHistVx(0),\r
  57   fHistVy(0),\r
  58   fHistVz(0),\r
  59   fHistClus(0),\r
  60   fHistDCA(0),\r
  61   fHistChi2(0),\r
  62   fHistPt(0),\r
  63   fHistEta(0),\r
  64   fHistPhi(0),\r
  65   fHistPhiBefore(0),\r
  66   fHistPhiAfter(0),\r
  67   fHistV0M(0),\r
  68   fHistRefTracks(0),\r
  69   fHistdEdxVsPTPCbeforePID(NULL),\r
  70   fHistBetavsPTOFbeforePID(NULL), \r
  71   fHistProbTPCvsPtbeforePID(NULL), \r
  72   fHistProbTOFvsPtbeforePID(NULL), \r
  73   fHistNSigmaTPCvsPtbeforePID(NULL), \r
  74   fHistNSigmaTOFvsPtbeforePID(NULL), \r
  75   fHistdEdxVsPTPCafterPID(NULL),\r
  76   fHistBetavsPTOFafterPID(NULL), \r
  77   fHistProbTPCvsPtafterPID(NULL), \r
  78   fHistProbTOFvsPtafterPID(NULL), \r
  79   fHistNSigmaTPCvsPtafterPID(NULL), \r
  80   fHistNSigmaTOFvsPtafterPID(NULL),  \r
  81   fPIDResponse(0x0),\r
  82   fPIDCombined(0x0),\r
  83   fParticleOfInterest(kPion),\r
  84   fPidDetectorConfig(kTPCTOF),\r
  85   fUsePID(kFALSE),\r
  86   fUsePIDnSigma(kTRUE),\r
  87   fUsePIDPropabilities(kFALSE), \r
  88   fPIDNSigma(3.),\r
  89   fMinAcceptedPIDProbability(0.8),\r
  90   fESDtrackCuts(0),\r
  91   fCentralityEstimator("V0M"),\r
  92   fUseCentrality(kFALSE),\r
  93   fCentralityPercentileMin(0.), \r
  94   fCentralityPercentileMax(5.),\r
  95   fImpactParameterMin(0.),\r
  96   fImpactParameterMax(20.),\r
  97   fUseMultiplicity(kFALSE),\r
  98   fNumberOfAcceptedTracksMin(0),\r
  99   fNumberOfAcceptedTracksMax(10000),\r
 100   fHistNumberOfAcceptedTracks(0),\r
 101   fUseOfflineTrigger(kFALSE),\r
 102   fVxMax(0.3),\r
 103   fVyMax(0.3),\r
 104   fVzMax(10.),\r
 105   nAODtrackCutBit(128),\r
 106   fPtMin(0.3),\r
 107   fPtMax(1.5),\r
 108   fEtaMin(-0.8),\r
 109   fEtaMax(-0.8),\r
 110   fDCAxyCut(-1),\r
 111   fDCAzCut(-1),\r
 112   fTPCchi2Cut(-1),\r
 113   fNClustersTPCCut(-1),\r
 114   fAcceptanceParameterization(0),\r
 115   fDifferentialV2(0),\r
 116   fUseFlowAfterBurner(kFALSE),\r
 117   fExcludeResonancesInMC(kFALSE),\r
 118   fUseMCPdgCode(kFALSE),\r
 119   fPDGCodeToBeAnalyzed(-1) {\r
 120   // Constructor\r
 121   // Define input and output slots here\r
 122   // Input slot #0 works with a TChain\r
 123   DefineInput(0, TChain::Class());\r
 124   // Output slot #0 writes into a TH1 container\r
 125   DefineOutput(1, TList::Class());\r
 126   DefineOutput(2, TList::Class());\r
 127   DefineOutput(3, TList::Class());\r
 128   DefineOutput(4, TList::Class());\r
 129 }\r
 130 \r
 131 //________________________________________________________________________\r
 132 AliAnalysisTaskBF::~AliAnalysisTaskBF() {\r
 133 \r
 134   // delete fBalance; \r
 135   // delete fShuffledBalance; \r
 136   // delete fList;\r
 137   // delete fListBF; \r
 138   // delete fListBFS;\r
 139 \r
 140   // delete fHistEventStats; \r
 141   // delete fHistTrackStats; \r
 142   // delete fHistVx; \r
 143   // delete fHistVy; \r
 144   // delete fHistVz; \r
 145 \r
 146   // delete fHistClus;\r
 147   // delete fHistDCA;\r
 148   // delete fHistChi2;\r
 149   // delete fHistPt;\r
 150   // delete fHistEta;\r
 151   // delete fHistPhi;\r
 152   // delete fHistV0M;\r
 153 }\r
 154 \r
 155 //________________________________________________________________________\r
 156 void AliAnalysisTaskBF::UserCreateOutputObjects() {\r
 157   // Create histograms\r
 158   // Called once\r
 159   if(!fBalance) {\r
 160     fBalance = new AliBalance();\r
 161     fBalance->SetAnalysisLevel("ESD");\r
 162     //fBalance->SetNumberOfBins(-1,16);\r
 163     fBalance->SetInterval(-1,-0.8,0.8,16,0.,1.6);\r
 164   }\r
 165   if(fRunShuffling) {\r
 166     if(!fShuffledBalance) {\r
 167       fShuffledBalance = new AliBalance();\r
 168       fShuffledBalance->SetAnalysisLevel("ESD");\r
 169       //fShuffledBalance->SetNumberOfBins(-1,16);\r
 170       fShuffledBalance->SetInterval(-1,-0.8,0.8,16,0.,1.6);\r
 171     }\r
 172   }\r
 173 \r
 174   //QA list\r
 175   fList = new TList();\r
 176   fList->SetName("listQA");\r
 177   fList->SetOwner();\r
 178 \r
 179   //Balance Function list\r
 180   fListBF = new TList();\r
 181   fListBF->SetName("listBF");\r
 182   fListBF->SetOwner();\r
 183 \r
 184   if(fRunShuffling) {\r
 185     fListBFS = new TList();\r
 186     fListBFS->SetName("listBFShuffled");\r
 187     fListBFS->SetOwner();\r
 188   }\r
 189 \r
 190   //PID QA list\r
 191   if(fUsePID) {\r
 192     fHistListPIDQA = new TList();\r
 193     fHistListPIDQA->SetName("listQAPID");\r
 194     fHistListPIDQA->SetOwner();\r
 195   }\r
 196 \r
 197   //Event stats.\r
 198   TString gCutName[4] = {"Total","Offline trigger",\r
 199                          "Vertex","Analyzed"};\r
 200   fHistEventStats = new TH1F("fHistEventStats",\r
 201                              "Event statistics;;N_{events}",\r
 202                              4,0.5,4.5);\r
 203   for(Int_t i = 1; i <= 4; i++)\r
 204     fHistEventStats->GetXaxis()->SetBinLabel(i,gCutName[i-1].Data());\r
 205   fList->Add(fHistEventStats);\r
 206 \r
 207   TString gCentName[9] = {"V0M","FMD","TRK","TKL","CL0","CL1","V0MvsFMD","TKLvsV0M","ZEMvsZDC"};\r
 208   fHistCentStats = new TH2F("fHistCentStats",\r
 209                              "Centrality statistics;;Cent percentile",\r
 210                             9,-0.5,8.5,220,-5,105);\r
 211   for(Int_t i = 1; i <= 9; i++)\r
 212     fHistCentStats->GetXaxis()->SetBinLabel(i,gCentName[i-1].Data());\r
 213   fList->Add(fHistCentStats);\r
 214 \r
 215   fHistTriggerStats = new TH1F("fHistTriggerStats","Trigger statistics;TriggerBit;N_{events}",130,0,130);\r
 216   fList->Add(fHistTriggerStats);\r
 217 \r
 218   fHistTrackStats = new TH1F("fHistTrackStats","Event statistics;TrackFilterBit;N_{events}",130,0,130);\r
 219   fList->Add(fHistTrackStats);\r
 220 \r
 221   fHistNumberOfAcceptedTracks = new TH1F("fHistNumberOfAcceptedTracks",";N_{acc.};Entries",4001,-0.5,4000.5);\r
 222   fList->Add(fHistNumberOfAcceptedTracks);\r
 223 \r
 224   // Vertex distributions\r
 225   fHistVx = new TH1F("fHistVx","Primary vertex distribution - x coordinate;V_{x} (cm);Entries",100,-0.5,0.5);\r
 226   fList->Add(fHistVx);\r
 227   fHistVy = new TH1F("fHistVy","Primary vertex distribution - y coordinate;V_{y} (cm);Entries",100,-0.5,0.5);\r
 228   fList->Add(fHistVy);\r
 229   fHistVz = new TH1F("fHistVz","Primary vertex distribution - z coordinate;V_{z} (cm);Entries",100,-20.,20.);\r
 230   fList->Add(fHistVz);\r
 231 \r
 232   // QA histograms\r
 233   fHistClus = new TH2F("fHistClus","# Cluster (TPC vs. ITS)",10,0,10,200,0,200);\r
 234   fList->Add(fHistClus);\r
 235   fHistChi2 = new TH1F("fHistChi2","Chi2/NDF distribution",200,0,10);\r
 236   fList->Add(fHistChi2);\r
 237   fHistDCA  = new TH2F("fHistDCA","DCA (xy vs. z)",400,-5,5,400,-5,5); \r
 238   fList->Add(fHistDCA);\r
 239   fHistPt   = new TH1F("fHistPt","p_{T} distribution",200,0,10);\r
 240   fList->Add(fHistPt);\r
 241   fHistEta  = new TH1F("fHistEta","#eta distribution",200,-2,2);\r
 242   fList->Add(fHistEta);\r
 243   fHistPhi  = new TH1F("fHistPhi","#phi distribution",200,-20,380);\r
 244   fList->Add(fHistPhi);\r
 245   fHistPhiBefore  = new TH1F("fHistPhiBefore","#phi distribution",200,0.,2*TMath::Pi());\r
 246   fList->Add(fHistPhiBefore);\r
 247   fHistPhiAfter  = new TH1F("fHistPhiAfter","#phi distribution",200,0.,2*TMath::Pi());\r
 248   fList->Add(fHistPhiAfter);\r
 249   fHistV0M  = new TH2F("fHistV0M","V0 Multiplicity C vs. A",500, 0, 20000, 500, 0, 20000);\r
 250   fList->Add(fHistV0M);\r
 251   TString gRefTrackName[6] = {"tracks","tracksPos","tracksNeg","tracksTPConly","clusITS0","clusITS1"};\r
 252   fHistRefTracks  = new TH2F("fHistRefTracks","Nr of Ref tracks/event vs. ref track estimator;;Nr of tracks",6, 0, 6, 400, 0, 20000);\r
 253   for(Int_t i = 1; i <= 6; i++)\r
 254     fHistRefTracks->GetXaxis()->SetBinLabel(i,gRefTrackName[i-1].Data());\r
 255   fList->Add(fHistRefTracks);\r
 256 \r
 257   // Balance function histograms\r
 258   // Initialize histograms if not done yet\r
 259   if(!fBalance->GetHistNp(0)){\r
 260     AliWarning("Histograms not yet initialized! --> Will be done now");\r
 261     AliWarning("--> Add 'gBalance->InitHistograms()' in your configBalanceFunction");\r
 262     fBalance->InitHistograms();\r
 263   }\r
 264 \r
 265   if(fRunShuffling) {\r
 266     if(!fShuffledBalance->GetHistNp(0)) {\r
 267       AliWarning("Histograms (shuffling) not yet initialized! --> Will be done now");\r
 268       AliWarning("--> Add 'gBalance->InitHistograms()' in your configBalanceFunction");\r
 269       fShuffledBalance->InitHistograms();\r
 270     }\r
 271   }\r
 272 \r
 273   for(Int_t a = 0; a < ANALYSIS_TYPES; a++){\r
 274     fListBF->Add(fBalance->GetHistNp(a));\r
 275     fListBF->Add(fBalance->GetHistNn(a));\r
 276     fListBF->Add(fBalance->GetHistNpn(a));\r
 277     fListBF->Add(fBalance->GetHistNnn(a));\r
 278     fListBF->Add(fBalance->GetHistNpp(a));\r
 279     fListBF->Add(fBalance->GetHistNnp(a));\r
 280 \r
 281     if(fRunShuffling) {\r
 282       fListBFS->Add(fShuffledBalance->GetHistNp(a));\r
 283       fListBFS->Add(fShuffledBalance->GetHistNn(a));\r
 284       fListBFS->Add(fShuffledBalance->GetHistNpn(a));\r
 285       fListBFS->Add(fShuffledBalance->GetHistNnn(a));\r
 286       fListBFS->Add(fShuffledBalance->GetHistNpp(a));\r
 287       fListBFS->Add(fShuffledBalance->GetHistNnp(a));\r
 288     }  \r
 289   }\r
 290 \r
 291   if(fESDtrackCuts) fList->Add(fESDtrackCuts);\r
 292 \r
 293   //====================PID========================//\r
 294   if(fUsePID) {\r
 295     fHistdEdxVsPTPCbeforePID = new TH2D ("dEdxVsPTPCbefore","dEdxVsPTPCbefore", 1000, -50, 50, 1000, 0, 100); \r
 296     fHistListPIDQA->Add(fHistdEdxVsPTPCbeforePID); //addition \r
 297     \r
 298     fHistBetavsPTOFbeforePID = new TH2D ("BetavsPTOFbefore","BetavsPTOFbefore", 1000, -50, 50, 1000, 0, 1.2); \r
 299     fHistListPIDQA->Add(fHistBetavsPTOFbeforePID); //addition\r
 300     \r
 301     fHistProbTPCvsPtbeforePID = new TH2D ("ProbTPCvsPtbefore","ProbTPCvsPtbefore", 1000, -50, 50, 1000, 0, 100); \r
 302     fHistListPIDQA->Add(fHistProbTPCvsPtbeforePID); //addition \r
 303     \r
 304     fHistProbTOFvsPtbeforePID = new TH2D ("ProbTOFvsPtbefore","ProbTOFvsPtbefore", 1000, -50, 50, 1000, 0, 100); \r
 305     fHistListPIDQA->Add(fHistProbTOFvsPtbeforePID); //addition \r
 306     \r
 307     fHistNSigmaTPCvsPtbeforePID = new TH2D ("NSigmaTPCvsPtbefore","NSigmaTPCvsPtbefore", 1000, -50, 50, 1000, 0, 100); \r
 308     fHistListPIDQA->Add(fHistNSigmaTPCvsPtbeforePID); //addition \r
 309     \r
 310     fHistNSigmaTOFvsPtbeforePID = new TH2D ("NSigmaTOFvsPtbefore","NSigmaTOFvsPtbefore", 1000, -50, 50, 1000, 0, 100); \r
 311     fHistListPIDQA->Add(fHistNSigmaTOFvsPtbeforePID); //addition \r
 312     \r
 313     fHistdEdxVsPTPCafterPID = new TH2D ("dEdxVsPTPCafter","dEdxVsPTPCafter", 1000, -50, 50, 1000, 0, 100); \r
 314     fHistListPIDQA->Add(fHistdEdxVsPTPCafterPID); //addition \r
 315     \r
 316     fHistBetavsPTOFafterPID = new TH2D ("BetavsPTOFafter","BetavsPTOFafter", 1000, -50, 50, 1000, 0, 1.2); \r
 317     fHistListPIDQA->Add(fHistBetavsPTOFafterPID); //addition \r
 318     \r
 319     fHistProbTPCvsPtafterPID = new TH2D ("ProbTPCvsPtafter","ProbTPCvsPtafter", 1000, -50, 50, 1000, 0, 100); \r
 320     fHistListPIDQA->Add(fHistProbTPCvsPtafterPID); //addition \r
 321   \r
 322     fHistProbTOFvsPtafterPID = new TH2D ("ProbTOFvsPtafter","ProbTOFvsPtafter", 1000,  -50, 50, 1000, 0, 100); \r
 323     fHistListPIDQA->Add(fHistProbTOFvsPtafterPID); //addition  \r
 324     \r
 325     fHistNSigmaTPCvsPtafterPID = new TH2D ("NSigmaTPCvsPtafter","NSigmaTPCvsPtafter", 1000, -50, 50, 1000, 0, 100); \r
 326     fHistListPIDQA->Add(fHistNSigmaTPCvsPtafterPID); //addition  \r
 327     \r
 328     fHistNSigmaTOFvsPtafterPID = new TH2D ("NSigmaTOFvsPtafter","NSigmaTOFvsPtafter", 1000, -50, 50, 1000, 0, 100); \r
 329     fHistListPIDQA->Add(fHistNSigmaTOFvsPtafterPID); //addition \r
 330   }\r
 331   //====================PID========================//\r
 332 \r
 333   // Post output data.\r
 334   PostData(1, fList);\r
 335   PostData(2, fListBF);\r
 336   if(fRunShuffling) PostData(3, fListBFS);\r
 337   if(fUsePID) PostData(4, fHistListPIDQA);       //PID\r
 338 }\r
 339 \r
 340 //________________________________________________________________________\r
 341 void AliAnalysisTaskBF::UserExec(Option_t *) {\r
 342   // Main loop\r
 343   // Called for each event\r
 344   TString gAnalysisLevel = fBalance->GetAnalysisLevel();\r
 345 \r
 346   AliESDtrack *track_TPC   = NULL;\r
 347 \r
 348   Int_t gNumberOfAcceptedTracks = 0;\r
 349   Float_t fCentrality           = 0.;\r
 350 \r
 351   // vector holding the charges/kinematics of all tracks (charge,y,eta,phi,p0,p1,p2,pt,E)\r
 352   vector<Double_t> *chargeVectorShuffle[9];   // this will be shuffled\r
 353   vector<Double_t> *chargeVector[9];          // original charge\r
 354   for(Int_t i = 0; i < 9; i++){\r
 355     chargeVectorShuffle[i] = new vector<Double_t>;\r
 356     chargeVector[i]        = new vector<Double_t>;\r
 357   }\r
 358 \r
 359   Double_t v_charge;\r
 360   Double_t v_y;\r
 361   Double_t v_eta;\r
 362   Double_t v_phi;\r
 363   Double_t v_p[3];\r
 364   Double_t v_pt;\r
 365   Double_t v_E;\r
 366 \r
 367 \r
 368   //ESD analysis\r
 369   if(gAnalysisLevel == "ESD") {\r
 370     AliESDEvent* gESD = dynamic_cast<AliESDEvent*>(InputEvent()); // from TaskSE\r
 371     if (!gESD) {\r
 372       Printf("ERROR: gESD not available");\r
 373       return;\r
 374     }\r
 375 \r
 376     // store offline trigger bits\r
 377     fHistTriggerStats->Fill(((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected());\r
 378 \r
 379     // event selection done in AliAnalysisTaskSE::Exec() --> this is not used\r
 380     fHistEventStats->Fill(1); //all events\r
 381     Bool_t isSelected = kTRUE;\r
 382     if(fUseOfflineTrigger)\r
 383       isSelected = ((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected();\r
 384     if(isSelected) {\r
 385       fHistEventStats->Fill(2); //triggered events\r
 386 \r
 387       if(fUseCentrality) {\r
 388         //Centrality stuff\r
 389         AliCentrality *centrality = gESD->GetCentrality();\r
 390         \r
 391         fCentrality = centrality->GetCentralityPercentile(fCentralityEstimator.Data());\r
 392         \r
 393         // take only events inside centrality class\r
 394         if(!centrality->IsEventInCentralityClass(fCentralityPercentileMin,\r
 395                                                  fCentralityPercentileMax,\r
 396                                                  fCentralityEstimator.Data()))\r
 397           return;\r
 398         \r
 399         // centrality QA (V0M)\r
 400         fHistV0M->Fill(gESD->GetVZEROData()->GetMTotV0A(), gESD->GetVZEROData()->GetMTotV0C());\r
 401       }\r
 402         \r
 403       const AliESDVertex *vertex = gESD->GetPrimaryVertex();\r
 404       if(vertex) {\r
 405         if(vertex->GetNContributors() > 0) {\r
 406           if(vertex->GetZRes() != 0) {\r
 407             fHistEventStats->Fill(3); //events with a proper vertex\r
 408             if(TMath::Abs(vertex->GetXv()) < fVxMax) {\r
 409               if(TMath::Abs(vertex->GetYv()) < fVyMax) {\r
 410                 if(TMath::Abs(vertex->GetZv()) < fVzMax) {\r
 411                   fHistEventStats->Fill(4); //analayzed events\r
 412                   fHistVx->Fill(vertex->GetXv());\r
 413                   fHistVy->Fill(vertex->GetYv());\r
 414                   fHistVz->Fill(vertex->GetZv());\r
 415                   \r
 416                   //Printf("There are %d tracks in this event", gESD->GetNumberOfTracks());\r
 417                   for (Int_t iTracks = 0; iTracks < gESD->GetNumberOfTracks(); iTracks++) {\r
 418                     AliESDtrack* track = dynamic_cast<AliESDtrack *>(gESD->GetTrack(iTracks));\r
 419                     if (!track) {\r
 420                       Printf("ERROR: Could not receive track %d", iTracks);\r
 421                       continue;\r
 422                     }   \r
 423                     \r
 424                     // take only TPC only tracks\r
 425                     track_TPC   = new AliESDtrack();\r
 426                     if(!track->FillTPCOnlyTrack(*track_TPC)) continue;\r
 427                     \r
 428                     //ESD track cuts\r
 429                     if(fESDtrackCuts) \r
 430                       if(!fESDtrackCuts->AcceptTrack(track_TPC)) continue;\r
 431                     \r
 432                     // fill QA histograms\r
 433                     Float_t b[2];\r
 434                     Float_t bCov[3];\r
 435                     track_TPC->GetImpactParameters(b,bCov);\r
 436                     if (bCov[0]<=0 || bCov[2]<=0) {\r
 437                       AliDebug(1, "Estimated b resolution lower or equal zero!");\r
 438                       bCov[0]=0; bCov[2]=0;\r
 439                     }\r
 440                     \r
 441                     Int_t nClustersTPC = -1;\r
 442                     nClustersTPC = track_TPC->GetTPCNclsIter1();   // TPC standalone\r
 443                     //nClustersTPC = track->GetTPCclusters(0);   // global track\r
 444                     Float_t chi2PerClusterTPC = -1;\r
 445                     if (nClustersTPC!=0) {\r
 446                       chi2PerClusterTPC = track_TPC->GetTPCchi2Iter1()/Float_t(nClustersTPC);      // TPC standalone\r
 447                       //chi2PerClusterTPC = track->GetTPCchi2()/Float_t(nClustersTPC);     // global track\r
 448                     }\r
 449 \r
 450                     //===========================PID===============================//               \r
 451                     if(fUsePID) {\r
 452                       Double_t prob[AliPID::kSPECIES]={0.};\r
 453                       Double_t nSigma = 0.;\r
 454                       //Decide what detector configuration we want to use\r
 455                       switch(fPidDetectorConfig) {\r
 456                       case kTPCpid:\r
 457                         fPIDCombined->SetDetectorMask(AliPIDResponse::kDetTPC);\r
 458                         nSigma = fPIDResponse->NumberOfSigmasTPC(track,(AliPID::EParticleType)fParticleOfInterest);\r
 459                         break;\r
 460                       case kTOFpid:\r
 461                         fPIDCombined->SetDetectorMask(AliPIDResponse::kDetTOF);\r
 462                         nSigma = fPIDResponse->NumberOfSigmasTOF(track,(AliPID::EParticleType)fParticleOfInterest);\r
 463                         break;\r
 464                       case kTPCTOF:\r
 465                         fPIDCombined->SetDetectorMask(AliPIDResponse::kDetTOF|AliPIDResponse::kDetTPC);\r
 466                         break;\r
 467                       default:\r
 468                         break;\r
 469                       }//end switch: define detector mask\r
 470                       \r
 471                       UInt_t detUsed = fPIDCombined->ComputeProbabilities(track, fPIDResponse, prob);\r
 472                       \r
 473                       //Filling the PID QA\r
 474                       Double_t tofTime = -999., length = 999., tof = -999.;\r
 475                       Double_t c = TMath::C()*1.E-9;// m/ns\r
 476                       Double_t beta = -999.;\r
 477                       Double_t  nSigmaTOFForParticleOfInterest = -999.;\r
 478                       if ( (track->IsOn(AliESDtrack::kTOFin)) &&\r
 479                            (track->IsOn(AliESDtrack::kTIME))  ) { \r
 480                         tofTime = track->GetTOFsignal();//in ps\r
 481                         length = track->GetIntegratedLength();\r
 482                         tof = tofTime*1E-3; // ns       \r
 483                         \r
 484                         if (tof <= 0) {\r
 485                           //Printf("WARNING: track with negative TOF time found! Skipping this track for PID checks\n");\r
 486                           continue;\r
 487                         }\r
 488                         if (length <= 0){\r
 489                           //printf("WARNING: track with negative length found!Skipping this track for PID checks\n");\r
 490                           continue;\r
 491                         }\r
 492                         \r
 493                         length = length*0.01; // in meters\r
 494                         tof = tof*c;\r
 495                         beta = length/tof;\r
 496                         \r
 497                         nSigmaTOFForParticleOfInterest = fPIDResponse->NumberOfSigmasTOF(track,(AliPID::EParticleType)fParticleOfInterest);\r
 498                         fHistBetavsPTOFbeforePID ->Fill(track->P()*track->Charge(),beta);\r
 499                         fHistProbTOFvsPtbeforePID ->Fill(track->Pt(),prob[fParticleOfInterest]);\r
 500                         fHistNSigmaTOFvsPtbeforePID ->Fill(track->Pt(),nSigmaTOFForParticleOfInterest);\r
 501                       }//TOF signal \r
 502                       \r
 503                       \r
 504                       Double_t  nSigmaTPCForParticleOfInterest = fPIDResponse->NumberOfSigmasTPC(track,(AliPID::EParticleType)fParticleOfInterest);\r
 505                       fHistdEdxVsPTPCbeforePID -> Fill(track->P()*track->Charge(),track->GetTPCsignal());\r
 506                       fHistProbTPCvsPtbeforePID -> Fill(track->Pt(),prob[fParticleOfInterest]); \r
 507                       fHistNSigmaTPCvsPtbeforePID -> Fill(track->Pt(),nSigmaTPCForParticleOfInterest); \r
 508                       //end of QA-before pid\r
 509                       \r
 510                       if (detUsed != 0) {\r
 511                         //Make the decision based on the n-sigma\r
 512                         if(fUsePIDnSigma) {\r
 513                           if(nSigma > fPIDNSigma) continue;}\r
 514                         \r
 515                         //Make the decision based on the bayesian\r
 516                         else if(fUsePIDPropabilities) {\r
 517                           if(fParticleOfInterest != TMath::LocMax(AliPID::kSPECIES,prob)) continue;\r
 518                           if (prob[fParticleOfInterest]< fMinAcceptedPIDProbability) continue;      \r
 519                         }\r
 520                       }\r
 521                       \r
 522                       //Fill QA after the PID\r
 523                       fHistBetavsPTOFafterPID ->Fill(track->P()*track->Charge(),beta);\r
 524                       fHistProbTOFvsPtafterPID ->Fill(track->Pt(),prob[fParticleOfInterest]);\r
 525                       fHistNSigmaTOFvsPtafterPID ->Fill(track->Pt(),nSigmaTOFForParticleOfInterest);\r
 526                       \r
 527                       fHistdEdxVsPTPCafterPID -> Fill(track->P()*track->Charge(),track->GetTPCsignal());\r
 528                       fHistProbTPCvsPtafterPID -> Fill(track->Pt(),prob[fParticleOfInterest]); \r
 529                       fHistNSigmaTPCvsPtafterPID -> Fill(track->Pt(),nSigmaTPCForParticleOfInterest); \r
 530                       \r
 531                       PostData(4, fHistListPIDQA);\r
 532                     }\r
 533                     //===========================PID===============================//\r
 534                     v_charge = track_TPC->Charge();\r
 535                     v_y      = track_TPC->Y();\r
 536                     v_eta    = track_TPC->Eta();\r
 537                     v_phi    = track_TPC->Phi() * TMath::RadToDeg();\r
 538                     v_E      = track_TPC->E();\r
 539                     v_pt     = track_TPC->Pt();\r
 540                     track_TPC->PxPyPz(v_p);\r
 541                     fHistClus->Fill(track_TPC->GetITSclusters(0),nClustersTPC);\r
 542                     fHistDCA->Fill(b[1],b[0]);\r
 543                     fHistChi2->Fill(chi2PerClusterTPC);\r
 544                     fHistPt->Fill(v_pt);\r
 545                     fHistEta->Fill(v_eta);\r
 546                     fHistPhi->Fill(v_phi);\r
 547 \r
 548                     // fill charge vector\r
 549                     chargeVector[0]->push_back(v_charge);\r
 550                     chargeVector[1]->push_back(v_y);\r
 551                     chargeVector[2]->push_back(v_eta);\r
 552                     chargeVector[3]->push_back(v_phi);\r
 553                     chargeVector[4]->push_back(v_p[0]);\r
 554                     chargeVector[5]->push_back(v_p[1]);\r
 555                     chargeVector[6]->push_back(v_p[2]);\r
 556                     chargeVector[7]->push_back(v_pt);\r
 557                     chargeVector[8]->push_back(v_E);\r
 558 \r
 559                     if(fRunShuffling) {\r
 560                       chargeVectorShuffle[0]->push_back(v_charge);\r
 561                       chargeVectorShuffle[1]->push_back(v_y);\r
 562                       chargeVectorShuffle[2]->push_back(v_eta);\r
 563                       chargeVectorShuffle[3]->push_back(v_phi);\r
 564                       chargeVectorShuffle[4]->push_back(v_p[0]);\r
 565                       chargeVectorShuffle[5]->push_back(v_p[1]);\r
 566                       chargeVectorShuffle[6]->push_back(v_p[2]);\r
 567                       chargeVectorShuffle[7]->push_back(v_pt);\r
 568                       chargeVectorShuffle[8]->push_back(v_E);\r
 569                     }\r
 570                     \r
 571                     delete track_TPC;\r
 572                     \r
 573                   } //track loop\r
 574                 }//Vz cut\r
 575               }//Vy cut\r
 576             }//Vx cut\r
 577           }//proper vertex resolution\r
 578         }//proper number of contributors\r
 579       }//vertex object valid\r
 580     }//triggered event \r
 581   }//ESD analysis\r
 582   \r
 583   //AOD analysis (vertex and track cuts also here!!!!)\r
 584   else if(gAnalysisLevel == "AOD") {\r
 585     AliAODEvent* gAOD = dynamic_cast<AliAODEvent*>(InputEvent()); // from TaskSE\r
 586     if(!gAOD) {\r
 587       Printf("ERROR: gAOD not available");\r
 588       return;\r
 589     }\r
 590 \r
 591     AliAODHeader *aodHeader = gAOD->GetHeader();\r
 592 \r
 593     // store offline trigger bits\r
 594     fHistTriggerStats->Fill(aodHeader->GetOfflineTrigger());\r
 595     \r
 596     // event selection done in AliAnalysisTaskSE::Exec() --> this is not used\r
 597     fHistEventStats->Fill(1); //all events\r
 598     Bool_t isSelected = kTRUE;\r
 599     if(fUseOfflineTrigger)\r
 600       isSelected = ((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected();\r
 601     if(isSelected) {\r
 602       fHistEventStats->Fill(2); //triggered events\r
 603                   \r
 604       //Centrality stuff (centrality in AOD header)\r
 605       if(fUseCentrality) {\r
 606         fCentrality = aodHeader->GetCentralityP()->GetCentralityPercentile(fCentralityEstimator.Data());\r
 607         \r
 608         // QA for centrality estimators\r
 609         fHistCentStats->Fill(0.,aodHeader->GetCentralityP()->GetCentralityPercentile("V0M"));\r
 610         fHistCentStats->Fill(1.,aodHeader->GetCentralityP()->GetCentralityPercentile("FMD"));\r
 611         fHistCentStats->Fill(2.,aodHeader->GetCentralityP()->GetCentralityPercentile("TRK"));\r
 612         fHistCentStats->Fill(3.,aodHeader->GetCentralityP()->GetCentralityPercentile("TKL"));\r
 613         fHistCentStats->Fill(4.,aodHeader->GetCentralityP()->GetCentralityPercentile("CL0"));\r
 614         fHistCentStats->Fill(5.,aodHeader->GetCentralityP()->GetCentralityPercentile("CL1"));\r
 615         fHistCentStats->Fill(6.,aodHeader->GetCentralityP()->GetCentralityPercentile("V0MvsFMD"));\r
 616         fHistCentStats->Fill(7.,aodHeader->GetCentralityP()->GetCentralityPercentile("TKLvsV0M"));\r
 617         fHistCentStats->Fill(8.,aodHeader->GetCentralityP()->GetCentralityPercentile("ZEMvsZDC"));\r
 618         \r
 619         // take only events inside centrality class\r
 620         if((fCentrality < fCentralityPercentileMin) || (fCentrality > fCentralityPercentileMax)) \r
 621           return;\r
 622         \r
 623         // centrality QA (V0M)\r
 624         fHistV0M->Fill(gAOD->GetVZEROData()->GetMTotV0A(), gAOD->GetVZEROData()->GetMTotV0C());\r
 625         \r
 626         // centrality QA (reference tracks)\r
 627         fHistRefTracks->Fill(0.,aodHeader->GetRefMultiplicity());\r
 628         fHistRefTracks->Fill(1.,aodHeader->GetRefMultiplicityPos());\r
 629         fHistRefTracks->Fill(2.,aodHeader->GetRefMultiplicityNeg());\r
 630         fHistRefTracks->Fill(3.,aodHeader->GetTPConlyRefMultiplicity());\r
 631         fHistRefTracks->Fill(4.,aodHeader->GetNumberOfITSClusters(0));\r
 632         fHistRefTracks->Fill(5.,aodHeader->GetNumberOfITSClusters(1));\r
 633         fHistRefTracks->Fill(6.,aodHeader->GetNumberOfITSClusters(2));\r
 634         fHistRefTracks->Fill(7.,aodHeader->GetNumberOfITSClusters(3));\r
 635         fHistRefTracks->Fill(8.,aodHeader->GetNumberOfITSClusters(4));\r
 636       }\r
 637 \r
 638       const AliAODVertex *vertex = gAOD->GetPrimaryVertex();\r
 639       \r
 640       if(vertex) {\r
 641         Double32_t fCov[6];\r
 642         vertex->GetCovarianceMatrix(fCov);\r
 643         \r
 644         if(vertex->GetNContributors() > 0) {\r
 645           if(fCov[5] != 0) {\r
 646             fHistEventStats->Fill(3); //events with a proper vertex\r
 647             if(TMath::Abs(vertex->GetX()) < fVxMax) {\r
 648               if(TMath::Abs(vertex->GetY()) < fVyMax) {\r
 649                 if(TMath::Abs(vertex->GetZ()) < fVzMax) {\r
 650                   fHistEventStats->Fill(4); //analyzed events\r
 651                   fHistVx->Fill(vertex->GetX());\r
 652                   fHistVy->Fill(vertex->GetY());\r
 653                   fHistVz->Fill(vertex->GetZ());\r
 654                   \r
 655                   //Printf("There are %d tracks in this event", gAOD->GetNumberOfTracks());\r
 656                   for (Int_t iTracks = 0; iTracks < gAOD->GetNumberOfTracks(); iTracks++) {\r
 657                     AliAODTrack* aodTrack = dynamic_cast<AliAODTrack *>(gAOD->GetTrack(iTracks));\r
 658                     if (!aodTrack) {\r
 659                       Printf("ERROR: Could not receive track %d", iTracks);\r
 660                       continue;\r
 661                     }\r
 662                     \r
 663                     // AOD track cuts\r
 664                     \r
 665                     // For ESD Filter Information: ANALYSIS/macros/AddTaskESDfilter.C\r
 666                     // take only TPC only tracks \r
 667                     fHistTrackStats->Fill(aodTrack->GetFilterMap());\r
 668                     if(!aodTrack->TestFilterBit(nAODtrackCutBit)) continue;\r
 669                     \r
 670                     v_charge = aodTrack->Charge();\r
 671                     v_y      = aodTrack->Y();\r
 672                     v_eta    = aodTrack->Eta();\r
 673                     v_phi    = aodTrack->Phi() * TMath::RadToDeg();\r
 674                     v_E      = aodTrack->E();\r
 675                     v_pt     = aodTrack->Pt();\r
 676                     aodTrack->PxPyPz(v_p);\r
 677                     \r
 678                     Float_t DCAxy = aodTrack->DCA();      // this is the DCA from global track (not exactly what is cut on)\r
 679                     Float_t DCAz  = aodTrack->ZAtDCA();   // this is the DCA from global track (not exactly what is cut on)\r
 680                     \r
 681                     \r
 682                     // Kinematics cuts from ESD track cuts\r
 683                     if( v_pt < fPtMin || v_pt > fPtMax)      continue;\r
 684                     if( v_eta < fEtaMin || v_eta > fEtaMax)  continue;\r
 685                     \r
 686                     // Extra DCA cuts (for systematic studies [!= -1])\r
 687                     if( fDCAxyCut != -1 && fDCAxyCut != -1){\r
 688                       if(TMath::Sqrt((DCAxy*DCAxy)/(fDCAxyCut*fDCAxyCut)+(DCAz*DCAz)/(fDCAzCut*fDCAzCut)) > 1 ){\r
 689                         continue;  // 2D cut\r
 690                       }\r
 691                     }\r
 692                     \r
 693                     // Extra TPC cuts (for systematic studies [!= -1])\r
 694                     if( fTPCchi2Cut != -1 && aodTrack->Chi2perNDF() > fTPCchi2Cut){\r
 695                       continue;\r
 696                     }\r
 697                     if( fNClustersTPCCut != -1 && aodTrack->GetTPCNcls() < fNClustersTPCCut){\r
 698                       continue;\r
 699                     }\r
 700                     \r
 701                     // fill QA histograms\r
 702                     fHistClus->Fill(aodTrack->GetITSNcls(),aodTrack->GetTPCNcls());\r
 703                     fHistDCA->Fill(DCAz,DCAxy);\r
 704                     fHistChi2->Fill(aodTrack->Chi2perNDF());\r
 705                     fHistPt->Fill(v_pt);\r
 706                     fHistEta->Fill(v_eta);\r
 707                     fHistPhi->Fill(v_phi);\r
 708 \r
 709                     // fill charge vector\r
 710                     chargeVector[0]->push_back(v_charge);\r
 711                     chargeVector[1]->push_back(v_y);\r
 712                     chargeVector[2]->push_back(v_eta);\r
 713                     chargeVector[3]->push_back(v_phi);\r
 714                     chargeVector[4]->push_back(v_p[0]);\r
 715                     chargeVector[5]->push_back(v_p[1]);\r
 716                     chargeVector[6]->push_back(v_p[2]);\r
 717                     chargeVector[7]->push_back(v_pt);\r
 718                     chargeVector[8]->push_back(v_E);\r
 719 \r
 720                     if(fRunShuffling) {\r
 721                       chargeVectorShuffle[0]->push_back(v_charge);\r
 722                       chargeVectorShuffle[1]->push_back(v_y);\r
 723                       chargeVectorShuffle[2]->push_back(v_eta);\r
 724                       chargeVectorShuffle[3]->push_back(v_phi);\r
 725                       chargeVectorShuffle[4]->push_back(v_p[0]);\r
 726                       chargeVectorShuffle[5]->push_back(v_p[1]);\r
 727                       chargeVectorShuffle[6]->push_back(v_p[2]);\r
 728                       chargeVectorShuffle[7]->push_back(v_pt);\r
 729                       chargeVectorShuffle[8]->push_back(v_E);\r
 730                     }\r
 731                                     \r
 732                     gNumberOfAcceptedTracks += 1;\r
 733                     \r
 734                   } //track loop\r
 735                 }//Vz cut\r
 736               }//Vy cut\r
 737             }//Vx cut\r
 738           }//proper vertex resolution\r
 739         }//proper number of contributors\r
 740       }//vertex object valid\r
 741     }//triggered event \r
 742   }//AOD analysis\r
 743 \r
 744   //MC-ESD analysis\r
 745   if(gAnalysisLevel == "MCESD") {\r
 746     AliMCEvent*  mcEvent = MCEvent(); \r
 747     if (!mcEvent) {\r
 748       Printf("ERROR: mcEvent not available");\r
 749       return;\r
 750     }\r
 751 \r
 752     AliESDEvent* gESD = dynamic_cast<AliESDEvent*>(InputEvent()); // from TaskSE\r
 753     if (!gESD) {\r
 754       Printf("ERROR: gESD not available");\r
 755       return;\r
 756     }\r
 757 \r
 758     // store offline trigger bits\r
 759     fHistTriggerStats->Fill(((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected());\r
 760 \r
 761     // event selection done in AliAnalysisTaskSE::Exec() --> this is not used\r
 762     fHistEventStats->Fill(1); //all events\r
 763     Bool_t isSelected = kTRUE;\r
 764     if(fUseOfflineTrigger)\r
 765       isSelected = ((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected();\r
 766     if(isSelected) {\r
 767       fHistEventStats->Fill(2); //triggered events\r
 768 \r
 769       if(fUseCentrality) {\r
 770         //Centrality stuff\r
 771         AliCentrality *centrality = gESD->GetCentrality();\r
 772 \r
 773         fCentrality = centrality->GetCentralityPercentile(fCentralityEstimator.Data());\r
 774         \r
 775         // take only events inside centrality class\r
 776         if(!centrality->IsEventInCentralityClass(fCentralityPercentileMin,\r
 777                                                  fCentralityPercentileMax,\r
 778                                                  fCentralityEstimator.Data()))\r
 779           return;\r
 780         \r
 781         // centrality QA (V0M)\r
 782         fHistV0M->Fill(gESD->GetVZEROData()->GetMTotV0A(), gESD->GetVZEROData()->GetMTotV0C());\r
 783       }\r
 784         \r
 785       const AliESDVertex *vertex = gESD->GetPrimaryVertex();\r
 786       if(vertex) {\r
 787         if(vertex->GetNContributors() > 0) {\r
 788           if(vertex->GetZRes() != 0) {\r
 789             fHistEventStats->Fill(3); //events with a proper vertex\r
 790             if(TMath::Abs(vertex->GetXv()) < fVxMax) {\r
 791               if(TMath::Abs(vertex->GetYv()) < fVyMax) {\r
 792                 if(TMath::Abs(vertex->GetZv()) < fVzMax) {\r
 793                   fHistEventStats->Fill(4); //analayzed events\r
 794                   fHistVx->Fill(vertex->GetXv());\r
 795                   fHistVy->Fill(vertex->GetYv());\r
 796                   fHistVz->Fill(vertex->GetZv());\r
 797                   \r
 798                   //Printf("There are %d tracks in this event", gESD->GetNumberOfTracks());\r
 799                   for (Int_t iTracks = 0; iTracks < gESD->GetNumberOfTracks(); iTracks++) {\r
 800                     AliESDtrack* track = dynamic_cast<AliESDtrack *>(gESD->GetTrack(iTracks));\r
 801                     if (!track) {\r
 802                       Printf("ERROR: Could not receive track %d", iTracks);\r
 803                       continue;\r
 804                     }   \r
 805                     \r
 806                     Int_t label = TMath::Abs(track->GetLabel());\r
 807                     if(label > mcEvent->GetNumberOfTracks()) continue;\r
 808                     if(label > mcEvent->GetNumberOfPrimaries()) continue;\r
 809                     \r
 810                     AliMCParticle* mcTrack = dynamic_cast<AliMCParticle *>(mcEvent->GetTrack(label));\r
 811                     if(!mcTrack) continue;\r
 812 \r
 813                     // take only TPC only tracks\r
 814                     track_TPC   = new AliESDtrack();\r
 815                     if(!track->FillTPCOnlyTrack(*track_TPC)) continue;\r
 816                     \r
 817                     //ESD track cuts\r
 818                     if(fESDtrackCuts) \r
 819                       if(!fESDtrackCuts->AcceptTrack(track_TPC)) continue;\r
 820                     \r
 821                     // fill QA histograms\r
 822                     Float_t b[2];\r
 823                     Float_t bCov[3];\r
 824                     track_TPC->GetImpactParameters(b,bCov);\r
 825                     if (bCov[0]<=0 || bCov[2]<=0) {\r
 826                       AliDebug(1, "Estimated b resolution lower or equal zero!");\r
 827                       bCov[0]=0; bCov[2]=0;\r
 828                     }\r
 829                     \r
 830                     Int_t nClustersTPC = -1;\r
 831                     nClustersTPC = track_TPC->GetTPCNclsIter1();   // TPC standalone\r
 832                     //nClustersTPC = track->GetTPCclusters(0);   // global track\r
 833                     Float_t chi2PerClusterTPC = -1;\r
 834                     if (nClustersTPC!=0) {\r
 835                       chi2PerClusterTPC = track_TPC->GetTPCchi2Iter1()/Float_t(nClustersTPC);      // TPC standalone\r
 836                       //chi2PerClusterTPC = track->GetTPCchi2()/Float_t(nClustersTPC);     // global track\r
 837                     }\r
 838                     \r
 839                     v_charge = track_TPC->Charge();\r
 840                     v_y      = track_TPC->Y();\r
 841                     v_eta    = track_TPC->Eta();\r
 842                     v_phi    = track_TPC->Phi() * TMath::RadToDeg();\r
 843                     v_E      = track_TPC->E();\r
 844                     v_pt     = track_TPC->Pt();\r
 845                     track_TPC->PxPyPz(v_p);\r
 846 \r
 847                     fHistClus->Fill(track_TPC->GetITSclusters(0),nClustersTPC);\r
 848                     fHistDCA->Fill(b[1],b[0]);\r
 849                     fHistChi2->Fill(chi2PerClusterTPC);\r
 850                     fHistPt->Fill(v_pt);\r
 851                     fHistEta->Fill(v_eta);\r
 852                     fHistPhi->Fill(v_phi);\r
 853 \r
 854                     // fill charge vector\r
 855                     chargeVector[0]->push_back(v_charge);\r
 856                     chargeVector[1]->push_back(v_y);\r
 857                     chargeVector[2]->push_back(v_eta);\r
 858                     chargeVector[3]->push_back(v_phi);\r
 859                     chargeVector[4]->push_back(v_p[0]);\r
 860                     chargeVector[5]->push_back(v_p[1]);\r
 861                     chargeVector[6]->push_back(v_p[2]);\r
 862                     chargeVector[7]->push_back(v_pt);\r
 863                     chargeVector[8]->push_back(v_E);\r
 864 \r
 865                     if(fRunShuffling) {\r
 866                       chargeVectorShuffle[0]->push_back(v_charge);\r
 867                       chargeVectorShuffle[1]->push_back(v_y);\r
 868                       chargeVectorShuffle[2]->push_back(v_eta);\r
 869                       chargeVectorShuffle[3]->push_back(v_phi);\r
 870                       chargeVectorShuffle[4]->push_back(v_p[0]);\r
 871                       chargeVectorShuffle[5]->push_back(v_p[1]);\r
 872                       chargeVectorShuffle[6]->push_back(v_p[2]);\r
 873                       chargeVectorShuffle[7]->push_back(v_pt);\r
 874                       chargeVectorShuffle[8]->push_back(v_E);\r
 875                     }\r
 876                     \r
 877                     delete track_TPC;\r
 878                     gNumberOfAcceptedTracks += 1;\r
 879                     \r
 880                   } //track loop\r
 881                 }//Vz cut\r
 882               }//Vy cut\r
 883             }//Vx cut\r
 884           }//proper vertex resolution\r
 885         }//proper number of contributors\r
 886       }//vertex object valid\r
 887     }//triggered event \r
 888   }//MC-ESD analysis\r
 889 \r
 890   //MC analysis\r
 891   else if(gAnalysisLevel == "MC") {\r
 892     AliMCEvent*  mcEvent = MCEvent(); \r
 893     if (!mcEvent) {\r
 894       Printf("ERROR: mcEvent not available");\r
 895       return;\r
 896     }\r
 897     fHistEventStats->Fill(1); //total events\r
 898     fHistEventStats->Fill(2); //offline trigger\r
 899 \r
 900     Double_t gReactionPlane = 0., gImpactParameter = 0.;\r
 901     if(fUseCentrality) {\r
 902       //Get the MC header\r
 903       AliGenHijingEventHeader* headerH = dynamic_cast<AliGenHijingEventHeader*>(mcEvent->GenEventHeader());\r
 904       if (headerH) {\r
 905         //Printf("=====================================================");\r
 906         //Printf("Reaction plane angle: %lf",headerH->ReactionPlaneAngle());\r
 907         //Printf("Impact parameter: %lf",headerH->ImpactParameter());\r
 908         //Printf("=====================================================");\r
 909         gReactionPlane = headerH->ReactionPlaneAngle();\r
 910         gImpactParameter = headerH->ImpactParameter();\r
 911         fCentrality = gImpactParameter;\r
 912       }\r
 913       fCentrality = gImpactParameter;\r
 914 \r
 915       // take only events inside centrality class (DIDN'T CHANGE THIS UP TO NOW)\r
 916       if((fImpactParameterMin > gImpactParameter) || (fImpactParameterMax < gImpactParameter))\r
 917         return;\r
 918     }\r
 919     \r
 920     AliGenEventHeader *header = mcEvent->GenEventHeader();\r
 921     if(!header) return;\r
 922     \r
 923     TArrayF gVertexArray;\r
 924     header->PrimaryVertex(gVertexArray);\r
 925     //Printf("Vertex: %lf (x) - %lf (y) - %lf (z)",\r
 926     //gVertexArray.At(0),\r
 927     //gVertexArray.At(1),\r
 928     //gVertexArray.At(2));\r
 929     fHistEventStats->Fill(3); //events with a proper vertex\r
 930     if(TMath::Abs(gVertexArray.At(0)) < fVxMax) {\r
 931       if(TMath::Abs(gVertexArray.At(1)) < fVyMax) {\r
 932         if(TMath::Abs(gVertexArray.At(2)) < fVzMax) {\r
 933           fHistEventStats->Fill(4); //analayzed events\r
 934           fHistVx->Fill(gVertexArray.At(0));\r
 935           fHistVy->Fill(gVertexArray.At(1));\r
 936           fHistVz->Fill(gVertexArray.At(2));\r
 937           \r
 938           Printf("There are %d tracks in this event", mcEvent->GetNumberOfPrimaries());\r
 939           for (Int_t iTracks = 0; iTracks < mcEvent->GetNumberOfPrimaries(); iTracks++) {\r
 940             AliMCParticle* track = dynamic_cast<AliMCParticle *>(mcEvent->GetTrack(iTracks));\r
 941             if (!track) {\r
 942               Printf("ERROR: Could not receive particle %d", iTracks);\r
 943               continue;\r
 944             }\r
 945             \r
 946             //exclude non stable particles\r
 947             if(!mcEvent->IsPhysicalPrimary(iTracks)) continue;\r
 948 \r
 949             v_eta    = track->Eta();\r
 950             v_pt     = track->Pt();\r
 951             \r
 952             if( v_pt < fPtMin || v_pt > fPtMax)      \r
 953               continue;\r
 954             if( v_eta < fEtaMin || v_eta > fEtaMax)  \r
 955               continue;\r
 956             \r
 957             //analyze one set of particles\r
 958             if(fUseMCPdgCode) {\r
 959               TParticle *particle = track->Particle();\r
 960               if(!particle) continue;\r
 961               \r
 962               Int_t gPdgCode = particle->GetPdgCode();\r
 963               if(TMath::Abs(fPDGCodeToBeAnalyzed) != TMath::Abs(gPdgCode)) \r
 964                 continue;\r
 965             }\r
 966             \r
 967             //Use the acceptance parameterization\r
 968             if(fAcceptanceParameterization) {\r
 969               Double_t gRandomNumber = gRandom->Rndm();\r
 970               if(gRandomNumber > fAcceptanceParameterization->Eval(track->Pt())) \r
 971                 continue;\r
 972             }\r
 973             \r
 974             //Exclude resonances\r
 975             if(fExcludeResonancesInMC) {\r
 976               TParticle *particle = track->Particle();\r
 977               if(!particle) continue;\r
 978               \r
 979               Bool_t kExcludeParticle = kFALSE;\r
 980               Int_t gMotherIndex = particle->GetFirstMother();\r
 981               if(gMotherIndex != -1) {\r
 982                 AliMCParticle* motherTrack = dynamic_cast<AliMCParticle *>(mcEvent->GetTrack(gMotherIndex));\r
 983                 if(motherTrack) {\r
 984                   TParticle *motherParticle = motherTrack->Particle();\r
 985                   if(motherParticle) {\r
 986                     Int_t pdgCodeOfMother = motherParticle->GetPdgCode();\r
 987                     //if((pdgCodeOfMother == 113)||(pdgCodeOfMother == 213)||(pdgCodeOfMother == 221)||(pdgCodeOfMother == 223)||(pdgCodeOfMother == 331)||(pdgCodeOfMother == 333)) {\r
 988                     if(pdgCodeOfMother == 113) {\r
 989                       kExcludeParticle = kTRUE;\r
 990                     }\r
 991                   }\r
 992                 }\r
 993               }\r
 994               \r
 995               //Exclude from the analysis decay products of rho0, rho+, eta, eta' and phi\r
 996               if(kExcludeParticle) continue;\r
 997             }\r
 998 \r
 999             v_charge = track->Charge();\r
1000             v_y      = track->Y();\r
1001             v_phi    = track->Phi();\r
1002             v_E      = track->E();\r
1003             track->PxPyPz(v_p);\r
1004             //Printf("phi (before): %lf",v_phi);\r
1005 \r
1006             fHistPt->Fill(v_pt);\r
1007             fHistEta->Fill(v_eta);\r
1008             fHistPhi->Fill(v_phi);\r
1009 \r
1010             //Flow after burner\r
1011             if(fUseFlowAfterBurner) {\r
1012               Double_t precisionPhi = 0.001;\r
1013               Int_t maxNumberOfIterations = 100;\r
1014 \r
1015               Double_t phi0 = v_phi;\r
1016               Double_t gV2 = fDifferentialV2->Eval(v_pt);\r
1017 \r
1018               for (Int_t j = 0; j < maxNumberOfIterations; j++) {\r
1019                 Double_t phiprev = v_phi;\r
1020                 Double_t fl = v_phi - phi0 + gV2*TMath::Sin(2.*(v_phi - gReactionPlane));\r
1021                 Double_t fp = 1.0 + 2.0*gV2*TMath::Cos(2.*(v_phi - gReactionPlane)); \r
1022                 v_phi -= fl/fp;\r
1023                 if (TMath::AreEqualAbs(phiprev,v_phi,precisionPhi)) break;\r
1024               }\r
1025               //Printf("phi (after): %lf\n",v_phi);\r
1026                       Double_t v_DeltaphiBefore = phi0 - gReactionPlane;\r
1027               if(v_DeltaphiBefore < 0) v_DeltaphiBefore += 2*TMath::Pi();\r
1028               fHistPhiBefore->Fill(v_DeltaphiBefore);\r
1029 \r
1030               Double_t v_DeltaphiAfter = v_phi - gReactionPlane;\r
1031               if(v_DeltaphiAfter < 0) v_DeltaphiAfter += 2*TMath::Pi();\r
1032               fHistPhiAfter->Fill(v_DeltaphiAfter);\r
1033             }\r
1034             \r
1035             v_phi *= TMath::RadToDeg();\r
1036 \r
1037             // fill charge vector\r
1038             chargeVector[0]->push_back(v_charge);\r
1039             chargeVector[1]->push_back(v_y);\r
1040             chargeVector[2]->push_back(v_eta);\r
1041             chargeVector[3]->push_back(v_phi);\r
1042             chargeVector[4]->push_back(v_p[0]);\r
1043             chargeVector[5]->push_back(v_p[1]);\r
1044             chargeVector[6]->push_back(v_p[2]);\r
1045             chargeVector[7]->push_back(v_pt);\r
1046             chargeVector[8]->push_back(v_E);\r
1047             \r
1048             if(fRunShuffling) {\r
1049               chargeVectorShuffle[0]->push_back(v_charge);\r
1050               chargeVectorShuffle[1]->push_back(v_y);\r
1051               chargeVectorShuffle[2]->push_back(v_eta);\r
1052               chargeVectorShuffle[3]->push_back(v_phi);\r
1053               chargeVectorShuffle[4]->push_back(v_p[0]);\r
1054               chargeVectorShuffle[5]->push_back(v_p[1]);\r
1055               chargeVectorShuffle[6]->push_back(v_p[2]);\r
1056               chargeVectorShuffle[7]->push_back(v_pt);\r
1057               chargeVectorShuffle[8]->push_back(v_E);\r
1058             }\r
1059             gNumberOfAcceptedTracks += 1;\r
1060                     \r
1061           } //track loop\r
1062         }//Vz cut\r
1063       }//Vy cut\r
1064     }//Vx cut\r
1065   }//MC analysis\r
1066   \r
1067   //multiplicity cut (used in pp)\r
1068   if(fUseMultiplicity) {\r
1069     if((gNumberOfAcceptedTracks < fNumberOfAcceptedTracksMin)||(gNumberOfAcceptedTracks > fNumberOfAcceptedTracksMax))\r
1070       return;\r
1071   }\r
1072   fHistNumberOfAcceptedTracks->Fill(gNumberOfAcceptedTracks);\r
1073   \r
1074   // calculate balance function\r
1075   if(fUseMultiplicity) \r
1076     fBalance->CalculateBalance(gNumberOfAcceptedTracks,chargeVector);\r
1077   else                 \r
1078     fBalance->CalculateBalance(fCentrality,chargeVector);\r
1079 \r
1080   if(fRunShuffling) {\r
1081     // shuffle charges\r
1082     random_shuffle( chargeVectorShuffle[0]->begin(), chargeVectorShuffle[0]->end() );\r
1083     if(fUseMultiplicity) \r
1084       fShuffledBalance->CalculateBalance(gNumberOfAcceptedTracks,chargeVectorShuffle);\r
1085     else                 \r
1086       fShuffledBalance->CalculateBalance(fCentrality,chargeVectorShuffle);\r
1087   }\r
1088 }      \r
1089 \r
1090 //________________________________________________________________________\r
1091 void  AliAnalysisTaskBF::FinishTaskOutput(){\r
1092   //Printf("END BF");\r
1093 \r
1094   if (!fBalance) {\r
1095     Printf("ERROR: fBalance not available");\r
1096     return;\r
1097   }  \r
1098   if(fRunShuffling) {\r
1099     if (!fShuffledBalance) {\r
1100       Printf("ERROR: fShuffledBalance not available");\r
1101       return;\r
1102     }\r
1103   }\r
1104 \r
1105 }\r
1106 \r
1107 //________________________________________________________________________\r
1108 void AliAnalysisTaskBF::Terminate(Option_t *) {\r
1109   // Draw result to the screen\r
1110   // Called once at the end of the query\r
1111 \r
1112   // not implemented ...\r
1113 \r
1114 }\r