PWGCF/EBYE/Fluctuations/AliHigherMomentsToyModel.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: Nirbhay K. Behera                                              *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16
  17 //=========================================================================//
  18 //                                                                         //
  19 //           Toy Model for Net-Charge Higher Moment Analysis               //
  20 //              Author: Satyajit Jena || Nirbhay K. Behera                 //
  21 //                      sjena@cern.ch || nbehera@cern.ch                   //
  22 //                                                                         //
  23 //=========================================================================//
  24
  25 #include "TChain.h"
  26 #include "TList.h"
  27 #include "TFile.h"
  28 #include "TTree.h"
  29 #include "TH1D.h"
  30 #include "TH2F.h"
  31 #include "THnSparse.h"
  32 #include "TCanvas.h"
  33 #include "TParticle.h"
  34 #include <TDatabasePDG.h>
  35 #include <TParticlePDG.h>
  36
  37 #include "AliAnalysisTaskSE.h"
  38 #include "AliAnalysisManager.h"
  39
  40 #include "AliESDVertex.h"
  41 #include "AliESDEvent.h"
  42 #include "AliESDInputHandler.h"
  43 #include "AliAODEvent.h"
  44 #include "AliAODTrack.h"
  45 #include "AliAODInputHandler.h"
  46 #include "AliESD.h"
  47 #include "AliESDEvent.h"
  48 #include "AliAODEvent.h"
  49 #include "AliStack.h"
  50 #include "AliESDtrackCuts.h"
  51 #include "AliAODMCHeader.h"
  52 #include "AliAODMCParticle.h"
  53 #include "AliMCEventHandler.h"
  54 #include "AliMCEvent.h"
  55 #include "AliMCParticle.h"
  56 #include "AliStack.h"
  57 #include "AliGenHijingEventHeader.h"
  58 #include "AliGenEventHeader.h"
  59 #include "AliPID.h"
  60 #include "AliAODPid.h"
  61 #include "AliPIDResponse.h"
  62 #include "AliAODpidUtil.h"
  63 #include "AliPIDCombined.h"
  64
  65 #include "AliHigherMomentsToyModel.h"
  66
  67 using std::cout;
  68 using std::endl;
  69
  70
  71 ClassImp(AliHigherMomentsToyModel)
  72
  73
  74 //-----------------------------------------------------------------------
  75 AliHigherMomentsToyModel::AliHigherMomentsToyModel( const char *name )
  76 : AliAnalysisTaskSE( name ),
  77   fListOfHistosQA(0),
  78   fListOfHistos(0),
  79   fAOD(0),
  80   fArrayMC(0),
  81   fPIDResponse(0),
  82   fParticleSpecies(AliPID::kProton),
  83   fAnalysisType("AOD"),
  84   fCentralityEstimator("V0M"),
  85   fCentrality(0),
  86   fVxMax(3.),
  87   fVyMax(3.),
  88   fVzMax(10.),
  89   fDCAxy(2.4),
  90   fDCAz(3.),
  91   fPtLowerLimit(0.3),
  92   fPtHigherLimit(1.5),
  93   fEtaLowerLimit(-0.8),
  94   fEtaHigherLimit(0.8),
  95   fRapidityCut(0.5),
  96   fNSigmaCut(3.),
  97   fTPCNClus(80),
  98   fChi2perNDF(4.),
  99   fAODtrackCutBit(1024),
 100   fUsePid(kFALSE),
 101   fEventCounter(0),
 102   fHistDCA(0),
 103   fTPCSig(0),
 104   fTPCSigA(0),
 105   fTHnCentNplusNminusCh(0),
 106   fTHnCentNplusNminusChTruth(0),
 107   fTHnCentNplusNminus(0)
 108 {
 109
 110   for ( Int_t i = 0; i < 13; i++) {
 111     fHistQA[i] = NULL;
 112   }
 113
 114   for ( Int_t i = 0; i < 5; i++ ){
 115     fTHnCentNplusNminusPid[i] = NULL;
 116     fTHnCentNplusNminusPidTruth[i] = NULL;
 117   }
 118
 119   DefineOutput(1, TList::Class()); // Outpput....
 120   DefineOutput(2, TList::Class());
 121
 122 }
 123
 124 AliHigherMomentsToyModel::~AliHigherMomentsToyModel() {
 125
 126   if(fListOfHistosQA) delete fListOfHistosQA;
 127   if(fListOfHistos) delete fListOfHistos;
 128
 129 }
 130
 131 //---------------------------------------------------------------------------------
 132 void AliHigherMomentsToyModel::UserCreateOutputObjects() {
 133   //For QA-Histograms
 134   fListOfHistosQA = new TList();
 135   fListOfHistosQA->SetOwner(kTRUE);
 136
 137   fListOfHistos = new TList();
 138   fListOfHistos->SetOwner(kTRUE);
 139
 140   fEventCounter = new TH1D("fEventCounter","EventCounter", 10, 0.5,10.5);
 141   fEventCounter->GetXaxis()->SetBinLabel(1,"Event Accesed");
 142   fEventCounter->GetXaxis()->SetBinLabel(2,"Within 0-90% centrality");
 143   fEventCounter->GetXaxis()->SetBinLabel(5,"Have a vertex");
 144   fEventCounter->GetXaxis()->SetBinLabel(6,"After vertex Cut");
 145   fEventCounter->GetXaxis()->SetBinLabel(7,"Event Analyzed");
 146   fEventCounter->GetXaxis()->SetBinLabel(8,"Event Analysis finished");
 147   fListOfHistosQA->Add(fEventCounter);
 148
 149   fHistQA[0] = new TH1D("fHistQAvx", "Histo Vx After Cut", 400, -4., 4.);
 150   fHistQA[1] = new TH1D("fHistQAvy", "Histo Vy After Cut", 400, -4., 4.);
 151   fHistQA[2] = new TH1D("fHistQAvz", "Histo Vz After Cut", 500, -25., 25.);
 152   fHistQA[3] = new TH1D("fHistQAvxA", "Histo Vx All", 500, -5., 5.);
 153   fHistQA[4] = new TH1D("fHistQAvyA", "Histo Vy All", 500, -5., 5.);
 154   fHistQA[5] = new TH1D("fHistQAvzA", "Histo Vz All", 500, -25., 25.);
 155   fHistQA[6] = new TH1D("fHistQADcaXyC", "Histo DCAxy after cut", 500, -5., 5.);
 156   fHistQA[7] = new TH1D("fHistQADcaZC", "Histo DCAz after cut", 500, -5., 5.);
 157   fHistQA[8] = new TH1D("fHistQAPt","p_{T} distribution",600,0,6);
 158   fHistQA[9] = new TH1D("fHistQAEta","#eta distribution",240,-1.2,1.2);
 159   fHistQA[10] = new TH1D("fHistQAPhi","#phi distribution",340,0,6.8);
 160   fHistQA[11] = new TH1D("fHistQANCls","Number of TPC cluster",200,0,200);
 161   fHistQA[12] = new TH1D("fHistQAChi2","Chi2 per NDF",100,0,10);
 162
 163   for(Int_t i = 0; i < 13; i++)
 164     {
 165       fListOfHistosQA->Add(fHistQA[i]);
 166     }
 167
 168   fHistDCA = new TH2D("fHistDCA","DCAxy Vs DCAz", 500, -5., 5., 500, -5., 5.);
 169   fTPCSig = new TH2D("fTPCSig","TPC signal",200, 0.0, 10. ,1000,0.,1000);
 170   fTPCSig->SetMarkerColor(kRed);
 171   fTPCSigA = new TH2D("fTPCSigA","TPC signal all ",200, 0.0, 10. ,1000,0.,1000);
 172   fListOfHistosQA->Add(fHistDCA);
 173   fListOfHistosQA->Add(fTPCSig);
 174   fListOfHistosQA->Add(fTPCSigA);
 175
 176
 177   const Int_t nDim = 3;
 178   const Int_t nPid = 5;
 179
 180   TString Species[nPid] = {"Electron","Muon","Pion","Kaon","Proton"};
 181
 182   Int_t fBins[nPid][nDim];
 183   Double_t fMin[nPid][nDim];
 184   Double_t fMax[nPid][nDim];
 185
 186   for( Int_t i = 0; i < nPid; i++ ){
 187     for( Int_t j = 0; j < nDim; j++ ){
 188       fBins[i][j] = 0;
 189       fMin[i][j] = 0.;
 190       fMax[i][j] = 0.;
 191     }
 192   }
 193
 194   Int_t fBinsCh[nDim] = {100, 1500, 1500};
 195   Double_t fMinCh[nDim] = { -0.5, -0.5, -0.5 };
 196   Double_t fMaxCh[nDim] = { 99.5, 1499.5, 1499.5};
 197
 198   fTHnCentNplusNminusCh = new THnSparseD("fTHnCentNplusNminusCh","Cent-NplusChrg-NminusChrg", nDim, fBinsCh, fMinCh, fMaxCh);
 199   fTHnCentNplusNminusCh->GetAxis(0)->SetTitle("Centrality");
 200   fTHnCentNplusNminusCh->GetAxis(1)->SetTitle("Nplus");
 201   fTHnCentNplusNminusCh->GetAxis(2)->SetTitle("Nminus");
 202   fListOfHistos->Add(fTHnCentNplusNminusCh);
 203
 204   if( fAnalysisType == "MCAOD" ){
 205
 206     fTHnCentNplusNminusChTruth = new THnSparseD("fTHnCentNplusNminusChTruth","Cent-NplusChrg-NminusChrg", nDim, fBinsCh, fMinCh, fMaxCh);
 207     fTHnCentNplusNminusChTruth->GetAxis(0)->SetTitle("Centrality");
 208     fTHnCentNplusNminusChTruth->GetAxis(1)->SetTitle("Nplus");
 209     fTHnCentNplusNminusChTruth->GetAxis(2)->SetTitle("Nminus");
 210     fListOfHistos->Add(fTHnCentNplusNminusChTruth);
 211   }//MCAOD---
 212
 213
 214   TString hname1, hname11;
 215   TString htitle1, axisTitle1, axisTitle2;
 216
 217
 218
 219   if( fUsePid ){
 220
 221     Int_t gPid = (Int_t)fParticleSpecies;
 222
 223     if( gPid > 1 && gPid < 5 ){
 224       //Pion----
 225       fBins[2][0] = 100; fBins[2][1] = 1000; fBins[2][2] = 1000;
 226       fMin[2][0] = -0.5; fMin[2][1] = -0.5; fMin[2][2] = -0.5;
 227       fMax[2][0] = 99.5; fMax[2][1] = 999.5; fMax[2][2] = 999.5;
 228       //Kaon------
 229       fBins[3][0] = 100; fBins[3][1] = 600; fBins[3][2] = 600;
 230       fMin[3][0] = -0.5; fMin[3][1] = -0.5; fMin[3][2] = -0.5;
 231       fMax[3][0] = 99.5; fMax[3][1] = 599.5; fMax[3][2] = 599.5;
 232       //Proton-----
 233       fBins[4][0] = 100; fBins[4][1] = 400; fBins[4][2] = 400;
 234       fMin[4][0] = -0.5; fMin[4][1] = -0.5; fMin[4][2] = -0.5;
 235       fMax[4][0] = 99.5; fMax[4][1] = 399.5; fMax[4][2] = 399.5;
 236
 237       hname1 = "fCentNplusNminusPid"; hname1 +=gPid;
 238       htitle1 = Species[gPid]; htitle1 +=" And Neg-"; htitle1 +=Species[gPid];
 239       axisTitle1 = Species[gPid];
 240       axisTitle2 ="Neg-"; axisTitle2 += Species[gPid];
 241
 242       fTHnCentNplusNminusPid[gPid] = new THnSparseD(hname1.Data(),htitle1.Data(), nDim, fBins[gPid], fMin[gPid],fMax[gPid]);
 243
 244       fTHnCentNplusNminusPid[gPid]->GetAxis(0)->SetTitle("Centrality");
 245       fTHnCentNplusNminusPid[gPid]->GetAxis(1)->SetTitle(axisTitle1.Data());
 246       fTHnCentNplusNminusPid[gPid]->GetAxis(1)->SetTitle(axisTitle2.Data());
 247
 248       fListOfHistos->Add(fTHnCentNplusNminusPid[gPid]);
 249
 250       if( fAnalysisType == "MCAOD" ){
 251
 252         hname11 = "fCentNplusNminusPidTruth"; hname11 +=gPid;
 253         fTHnCentNplusNminusPidTruth[gPid] = new THnSparseD(hname11.Data(),htitle1.Data(), nDim, fBins[gPid], fMin[gPid],fMax[gPid]);
 254
 255         fTHnCentNplusNminusPidTruth[gPid]->GetAxis(0)->SetTitle("Centrality");
 256         fTHnCentNplusNminusPidTruth[gPid]->GetAxis(1)->SetTitle(axisTitle1.Data());
 257         fTHnCentNplusNminusPidTruth[gPid]->GetAxis(1)->SetTitle(axisTitle2.Data());
 258
 259         fListOfHistos->Add(fTHnCentNplusNminusPidTruth[gPid]);
 260
 261       }//MCAOD-----
 262     }//Pion, Koan and Proton-------
 263
 264     else{
 265
 266       Int_t fBinsX[nDim] = {100, 1500, 1500};
 267       Double_t fMinX[nDim] = { -0.5, -0.5, -0.5 };
 268       Double_t fMaxX[nDim] = { 99.5, 1499.5, 1499.5};
 269
 270       fTHnCentNplusNminus = new THnSparseD("fTHnCentNplusNminus","Cent-NplusChrg-NminusChrg", nDim, fBinsX, fMinX, fMaxX);
 271       fTHnCentNplusNminus->GetAxis(0)->SetTitle("Centrality");
 272       fTHnCentNplusNminus->GetAxis(1)->SetTitle("UnwantedPlus");
 273       fTHnCentNplusNminus->GetAxis(2)->SetTitle("UnwantedMinus");
 274       fListOfHistos->Add(fTHnCentNplusNminus);
 275
 276     }//Unwanted particle -------
 277
 278   }//fUsePid-------
 279
 280
 281
 282   PostData(1, fListOfHistosQA);
 283   PostData(2, fListOfHistos);
 284
 285 }
 286
 287
 288 //----------------------------------------------------------------------------------
 289 void AliHigherMomentsToyModel::UserExec( Option_t * ){
 290
 291   fEventCounter->Fill(1);
 292
 293
 294   if(fAnalysisType == "AOD") {
 295
 296     doAODEvent();
 297
 298   }//AOD--analysis-----
 299
 300   else if(fAnalysisType == "MCAOD") {
 301
 302     doMCAODEvent();
 303
 304   }
 305
 306   else return;
 307
 308
 309
 310
 311   fEventCounter->Fill(8);
 312
 313   PostData(1, fListOfHistosQA);
 314   PostData(2, fListOfHistos);
 315
 316 }
 317
 318 //--------------------------------------------------------------------------------------
 319 void AliHigherMomentsToyModel::doAODEvent(){
 320
 321   //-------------------
 322   Double_t nPlusCharge = 0.;
 323   Double_t nMinusCharge = 0.;
 324   Double_t nPartile = 0.;
 325   Double_t nAntiParticle = 0.;
 326   Int_t gPid = 0.;
 327
 328
 329   //connect to the analysis mannager-----
 330
 331   AliAnalysisManager* manager = AliAnalysisManager::GetAnalysisManager();
 332   if (!manager) {
 333     cout<<"ERROR: Analysis manager not found."<<endl;
 334     return;
 335   }
 336   //coneect to the inputHandler------------
 337   AliAODInputHandler* inputHandler = dynamic_cast<AliAODInputHandler*> (manager->GetInputEventHandler());
 338   if (!inputHandler) {
 339     cout<<"ERROR: Input handler not found."<<endl;
 340     return;
 341   }
 342
 343   fAOD = dynamic_cast<AliAODEvent*>(InputEvent());
 344   if (!fAOD)
 345     {
 346       cout<< "ERROR 01: AOD not found " <<endl;
 347       return;
 348     }
 349
 350   fPIDResponse =inputHandler->GetPIDResponse();
 351
 352
 353   if (!fPIDResponse){
 354     AliFatal("This Task needs the PID response attached to the inputHandler");
 355     return;
 356   }
 357
 358
 359   AliAODHeader *aodHeader = fAOD->GetHeader();
 360
 361   fCentrality = (Int_t)aodHeader->GetCentralityP()->GetCentralityPercentile(fCentralityEstimator.Data());
 362   /* Int_t cent = -1;
 363   cent =  aodHeader->GetCentralityP()->GetCentralityClass10(fCentralityEstimator.Data());
 364
 365   if (cent == 0)
 366     fCentrality = aodHeader->GetCentralityP()->GetCentralityClass5(fCentralityEstimator.Data());
 367   else if (cent == 10 || cent == -1.)
 368     fCentrality = -1;
 369   else if (cent > 0 && cent < 9)
 370     fCentrality = cent + 1;
 371   */
 372   if(fCentrality < 0 || fCentrality >= 91) return;
 373
 374   fEventCounter->Fill(2);
 375
 376   if(!ProperVertex()) return;
 377
 378   Int_t nTracks = fAOD->GetNumberOfTracks();
 379
 380   TExMap *trackMap = new TExMap();//Mapping matrix----
 381
 382   for(Int_t i = 0; i < nTracks; i++) {
 383
 384     AliAODTrack* aodTrack = dynamic_cast<AliAODTrack *>(fAOD->GetTrack(i));
 385
 386     if(!aodTrack) {
 387       AliError(Form("ERROR: Could not retrieve AODtrack %d",i));
 388       continue;
 389     }
 390
 391     Double_t tpcSignalAll = aodTrack->GetTPCsignal();
 392     fTPCSigA->Fill(aodTrack->GetTPCmomentum(),tpcSignalAll);
 393
 394     Int_t gID = aodTrack->GetID();
 395
 396     if (aodTrack->TestFilterBit(1)) trackMap->Add(gID, i);//Global tracks-----
 397   }//1st track loop----
 398
 399  AliAODTrack* newAodTrack;
 400
 401   for( Int_t j = 0; j < nTracks; j++ )
 402     {
 403
 404       AliAODTrack* aodTrack1 = dynamic_cast<AliAODTrack *>(fAOD->GetTrack(j));
 405
 406       if(!aodTrack1) {
 407         AliError(Form("ERROR: Could not retrieve AODtrack %d",j));
 408         continue;
 409       }
 410
 411
 412       if(!aodTrack1->TestFilterBit(fAODtrackCutBit)) continue;
 413
 414       Int_t gID = aodTrack1->GetID();
 415
 416       //if( aodTrack->GetID() != (-aodTrack1->GetID() -1) ) continue;
 417       newAodTrack = gID >= 0 ? aodTrack1 : fAOD->GetTrack(trackMap->GetValue(-1-gID)); //Take those global track who corresponds to TPC only track
 418
 419       Float_t dxy = 0., dz = 0.;
 420
 421       dxy = aodTrack1->DCA();
 422       dz  = aodTrack1->ZAtDCA();
 423
 424       Double_t pt = aodTrack1->Pt();
 425       Double_t eta = aodTrack1->Eta();
 426       Double_t nclus = aodTrack1->GetTPCClusterInfo(2,1);
 427       Double_t chi2ndf = aodTrack1->Chi2perNDF();
 428
 429       /*
 430       if( fabs(dxy) > fDCAxy ) continue;
 431       if( fabs(dz) > fDCAz ) continue;
 432       //Extra cut on DCA---( Similar to BF Task.. )
 433       if( fDCAxy !=0 && fDCAz !=0 ){
 434         if( TMath::Sqrt((dxy*dxy)/(fDCAxy*fDCAxy)+(dz*dz)/(fDCAz*fDCAz)) > 1. ) continue;
 435       }
 436       */
 437       if( pt < fPtLowerLimit || pt > fPtHigherLimit ) continue;
 438       if( eta < fEtaLowerLimit || eta > fEtaHigherLimit ) continue;
 439       if( nclus < fTPCNClus ) continue;
 440       if( chi2ndf > fChi2perNDF ) continue;
 441
 442
 443       fHistQA[6]->Fill(dxy);
 444       fHistQA[7]->Fill(dz);
 445       fHistQA[8]->Fill(pt);
 446       fHistQA[9]->Fill(eta);
 447       fHistQA[10]->Fill(aodTrack1->Phi());
 448       fHistQA[11]->Fill(nclus);
 449       fHistQA[12]->Fill(chi2ndf);
 450       fHistDCA->Fill(dxy,dz);
 451
 452       Short_t gCharge = aodTrack1->Charge();
 453
 454       if(gCharge > 0) nPlusCharge += 1.;
 455       if(gCharge < 0) nMinusCharge += 1.;
 456
 457       if( fUsePid ) {
 458
 459         gPid = (Int_t)fParticleSpecies;
 460
 461         Double_t rap =  newAodTrack->Y(AliPID::ParticleMass(fParticleSpecies));
 462         Double_t tpcSignal = newAodTrack->GetTPCsignal();
 463         //Double_t rap =  aodTrack1->Y(AliPID::ParticleMass(fParticleSpecies));
 464         //Double_t tpcSignal = aodTrack1->GetTPCsignal();
 465
 466         if( fabs(rap ) > fRapidityCut ) continue;//Rapidity cut
 467
 468         fTPCSig->Fill(newAodTrack->GetTPCmomentum(),tpcSignal);
 469
 470         Float_t nsigmaTPCPID = -999.;
 471         Float_t nsigmaTOFPID = -999.;
 472         //Float_t nsigmaTPCTOFPID = -999.;
 473
 474         nsigmaTPCPID = TMath::Abs(fPIDResponse->NumberOfSigmasTPC(newAodTrack,fParticleSpecies));
 475         nsigmaTOFPID = TMath::Abs(fPIDResponse->NumberOfSigmasTOF(newAodTrack,fParticleSpecies));
 476
 477         if ( nsigmaTPCPID < fNSigmaCut  ){
 478
 479           if (gCharge > 0) nPartile +=1.;
 480           if( gCharge < 0 ) nAntiParticle +=1.;
 481
 482         }
 483       }//fUsepid-----
 484
 485     }//--------- Track Loop to select with filterbit
 486
 487
 488
 489   Double_t fContainerCh[3] = { fCentrality, nPlusCharge, nMinusCharge};
 490   Double_t fContainerPid[3] = { fCentrality, nPartile, nAntiParticle};
 491
 492
 493   fTHnCentNplusNminusCh->Fill(fContainerCh);
 494
 495   if( fUsePid ){
 496     gPid = (Int_t)fParticleSpecies;
 497     fTHnCentNplusNminusPid[gPid]->Fill(fContainerPid);
 498
 499     // cout << "nCentrality "<< fCentrality <<", nParticle="<< nPartile << ", nMinusParticle=" << nAntiParticle << endl;
 500   }
 501
 502
 503   //cout << "nCentrality "<< fCentrality <<", nPlusCharge="<< nPlusCharge << ", nMinusCharge=" << nMinusCharge << endl;
 504
 505   fEventCounter->Fill(7);
 506
 507   return;
 508
 509 }
 510 //--------------------------------------------------------------------------------------
 511
 512
 513 //--------------------------------------------------------------------------------------
 514 void AliHigherMomentsToyModel::doMCAODEvent(){
 515
 516
 517   //---------
 518   Double_t nPlusCharge = 0.;
 519   Double_t nMinusCharge = 0.;
 520
 521   Double_t nPlusChargeTruth = 0.;
 522   Double_t nMinusChargeTruth = 0.;
 523
 524   Double_t nPartile = 0.;
 525   Double_t nAntiParticle = 0.;
 526   Double_t nPartileTruth = 0.;
 527   Double_t nAntiParticleTruth = 0.;
 528
 529   Int_t gPid = 0;
 530   Int_t gPdgCode = AliPID::ParticleCode(fParticleSpecies);
 531
 532   //Connect to Anlaysis manager------
 533   AliAnalysisManager* manager = AliAnalysisManager::GetAnalysisManager();
 534   if (!manager) {
 535     cout<<"ERROR: Analysis manager not found."<<endl;
 536     return;
 537   }
 538
 539   AliAODInputHandler* inputHandler = dynamic_cast<AliAODInputHandler*> (manager->GetInputEventHandler());
 540   if (!inputHandler) {
 541     cout<<"ERROR: Input handler not found."<<endl;
 542     return;
 543   }
 544
 545   //AOD event------
 546   fAOD = dynamic_cast<AliAODEvent*>(InputEvent());
 547   if (!fAOD)
 548     {
 549       cout<< "ERROR 01: AOD not found " <<endl;
 550       return;
 551     }
 552
 553   fPIDResponse =inputHandler->GetPIDResponse();
 554
 555
 556   if (!fPIDResponse){
 557     AliFatal("This Task needs the PID response attached to the inputHandler");
 558     return;
 559   }
 560   // -- Get MC header
 561   // ------------------------------------------------------------------
 562
 563   fArrayMC = dynamic_cast<TClonesArray*>(fAOD->FindListObject(AliAODMCParticle::StdBranchName()));
 564   if (!fArrayMC) {
 565     AliFatal("Error: MC particles branch not found!\n");
 566     return;
 567   }
 568
 569   AliAODMCHeader *mcHdr=NULL;
 570   mcHdr=(AliAODMCHeader*)fAOD->GetList()->FindObject(AliAODMCHeader::StdBranchName());
 571   if(!mcHdr) {
 572     printf("MC header branch not found!\n");
 573     return;
 574   }
 575
 576   AliAODHeader *aodHeader = fAOD->GetHeader();
 577
 578   fCentrality = (Int_t)aodHeader->GetCentralityP()->GetCentralityPercentile(fCentralityEstimator.Data());
 579
 580   /*
 581     Int_t cent = -1;
 582     cent =  aodHeader->GetCentralityP()->GetCentralityClass10(fCentralityEstimator.Data());
 583
 584     if (cent == 0)
 585     fCentrality = aodHeader->GetCentralityP()->GetCentralityClass5(fCentralityEstimator.Data());
 586     else if (cent == 10 || cent == -1.)
 587     fCentrality = -1;
 588     else if (cent > 0 && cent < 9)
 589     fCentrality = cent + 1;
 590   */
 591   if( fCentrality < 0 || fCentrality >= 91) return;
 592
 593   fEventCounter->Fill(2);
 594
 595
 596
 597   if(!ProperVertex()) return;
 598
 599   Int_t nTracks = fAOD->GetNumberOfTracks();
 600
 601
 602   TExMap *trackMap = new TExMap();//Mapping matrix----
 603
 604   for(Int_t i = 0; i < nTracks; i++) {
 605
 606     AliAODTrack* aodTrack = dynamic_cast<AliAODTrack *>(fAOD->GetTrack(i));
 607
 608     if(!aodTrack) {
 609       AliError(Form("ERROR: Could not retrieve AODtrack %d",i));
 610       continue;
 611     }
 612
 613     Double_t tpcSignalAll = aodTrack->GetTPCsignal();
 614     fTPCSigA->Fill(aodTrack->GetTPCmomentum(),tpcSignalAll);
 615
 616     Int_t gID = aodTrack->GetID();
 617
 618     if (aodTrack->TestFilterBit(1)) trackMap->Add(gID, i);//Global tracks-----
 619
 620   }//1st track loop----
 621
 622   AliAODTrack* newAodTrack;
 623
 624   for( Int_t j = 0; j < nTracks; j++ ){
 625
 626     AliAODTrack* aodTrack1 = dynamic_cast<AliAODTrack *>(fAOD->GetTrack(j));
 627
 628     if(!aodTrack1) {
 629       AliError(Form("ERROR: Could not retrieve AODtrack %d",j));
 630       continue;
 631     }
 632
 633
 634     if(!aodTrack1->TestFilterBit(fAODtrackCutBit)) continue;
 635
 636
 637     Int_t gID = aodTrack1->GetID();
 638
 639     //if( aodTrack->GetID() != (-aodTrack1->GetID() -1) ) continue;
 640
 641     newAodTrack = gID >= 0 ? aodTrack1 : fAOD->GetTrack(trackMap->GetValue(-1-gID)); //Take those global track who corresponds to TPC only track
 642
 643
 644     //cout << dxy << endl;
 645     Double_t pt = aodTrack1->Pt();
 646     Double_t eta = aodTrack1->Eta();
 647     Double_t nclus = aodTrack1->GetTPCClusterInfo(2,1);
 648     Double_t chi2ndf = aodTrack1->Chi2perNDF();
 649
 650     Float_t dxy = 0., dz = 0.;
 651
 652     if( fAODtrackCutBit == 128 ){
 653
 654       dxy = aodTrack1->DCA();
 655       dz  = aodTrack1->ZAtDCA();
 656
 657       if( fabs(dxy) > fDCAxy ) continue;
 658       if( fabs(dz) > fDCAz ) continue;
 659       //Extra cut on DCA---( Similar to BF Task.. )
 660       if( fDCAxy !=0 && fDCAz !=0 ){
 661         if( TMath::Sqrt((dxy*dxy)/(fDCAxy*fDCAxy)+(dz*dz)/(fDCAz*fDCAz)) > 1. ) continue;
 662       }
 663
 664       fHistQA[6]->Fill(dxy);
 665       fHistQA[7]->Fill(dz);
 666       fHistDCA->Fill(dxy,dz);
 667
 668     }
 669
 670
 671     if( pt < fPtLowerLimit || pt > fPtHigherLimit ) continue;
 672     if( eta < fEtaLowerLimit || eta > fEtaHigherLimit ) continue;
 673     if( nclus < fTPCNClus ) continue;
 674     if( chi2ndf > fChi2perNDF ) continue;
 675
 676
 677
 678     fHistQA[8]->Fill(pt);
 679     fHistQA[9]->Fill(eta);
 680     fHistQA[10]->Fill(aodTrack1->Phi());
 681     fHistQA[11]->Fill(nclus);
 682     fHistQA[12]->Fill(chi2ndf);
 683
 684
 685     Short_t gCharge = aodTrack1->Charge();
 686
 687     if( gCharge == 0 ) continue;
 688
 689
 690     if(gCharge > 0) nPlusCharge += 1.;
 691     if(gCharge < 0) nMinusCharge += 1.;
 692
 693     if( fUsePid ) {
 694
 695       gPid = (Int_t)fParticleSpecies;;
 696       Double_t rap =  newAodTrack->Y(AliPID::ParticleMass(fParticleSpecies));
 697       Double_t tpcSignal = newAodTrack->GetTPCsignal();
 698
 699       if( fabs(rap ) > fRapidityCut ) continue;//Rapidity cut
 700
 701       fTPCSig->Fill(newAodTrack->GetTPCmomentum(),tpcSignal);
 702
 703       Float_t nsigmaTPCPID = -999.;
 704       Float_t nsigmaTOFPID = -999.;
 705       //Float_t nsigmaTPCTOFPID = -999.;
 706
 707       nsigmaTPCPID = TMath::Abs(fPIDResponse->NumberOfSigmasTPC(newAodTrack,fParticleSpecies));
 708       nsigmaTOFPID = TMath::Abs(fPIDResponse->NumberOfSigmasTOF(newAodTrack,fParticleSpecies));
 709
 710       if ( nsigmaTPCPID < fNSigmaCut  ){
 711
 712
 713         if (gCharge > 0) nPartile +=1.;
 714         if( gCharge < 0 ) nAntiParticle +=1.;
 715
 716       }//nSigmaCut-----
 717     }//fUsepid-----
 718
 719   }//--------- Track Loop to select with filterbit
 720
 721   //cout << "Cent=" << fCentrality << " MC-PlusChrg=" << nPlusCharge << " MC-MinusChrg=" << nMinusCharge << endl;
 722
 723   //cout << "nCentrality "<< fCentrality <<", nParticle="<< nPartile << ", nMinusParticle=" << nAntiParticle << endl;
 724
 725   Double_t fContainerCh[3] = { fCentrality, nPlusCharge, nMinusCharge};
 726   Double_t fContainerPid[3] = { fCentrality, nPartile, nAntiParticle};
 727
 728   fTHnCentNplusNminusCh->Fill(fContainerCh);
 729
 730   if( fUsePid ){
 731
 732     gPid = (Int_t)fParticleSpecies;
 733     fTHnCentNplusNminusPid[gPid]->Fill(fContainerPid);
 734
 735   }
 736
 737   //===========================================
 738   //--------MC Truth---------------------------
 739   //===========================================
 740
 741   Int_t nMCTrack = fArrayMC->GetEntriesFast();
 742
 743   for (Int_t iMC = 0; iMC < nMCTrack; iMC++) {
 744
 745     AliAODMCParticle *partMC = (AliAODMCParticle*) fArrayMC->At(iMC);
 746
 747     if(!partMC){
 748       AliError(Form("ERROR: Could not retrieve AODMCtrack %d",iMC));
 749       continue;
 750     }
 751
 752     if(partMC->Charge() == 0) continue;
 753     if(!partMC->IsPhysicalPrimary()) continue;
 754
 755     if (partMC->Eta() < fEtaLowerLimit || partMC->Eta() > fEtaHigherLimit) continue;
 756     if (partMC->Pt() < fPtLowerLimit ||  partMC->Pt() > fPtHigherLimit) continue;
 757
 758     Short_t gCharge = partMC->Charge();
 759
 760     if(gCharge > 0) nPlusChargeTruth += 1.;
 761     if(gCharge < 0) nMinusChargeTruth += 1.;
 762
 763     if(fUsePid){
 764
 765       Double_t rap =  partMC->Y();
 766
 767       if( fabs(rap ) > fRapidityCut ) continue;//Rapidity cut
 768
 769       if(TMath::Abs(partMC->GetPdgCode()) != gPdgCode) continue;
 770
 771       if(gCharge > 0) nPartileTruth += 1.;
 772       if(gCharge < 0) nAntiParticleTruth += 1.;
 773
 774     }//if(fUsePid) ----
 775
 776   }//MC-Truth Track loop--
 777
 778   Double_t fContainerChTruth[3] = { fCentrality, nPlusChargeTruth, nMinusChargeTruth };
 779   Double_t fContainerPidTruth[3] = { fCentrality, nPartileTruth, nAntiParticleTruth };
 780
 781   //cout << "Cent=" << fCentrality << " MC-PlusChrgT=" << nPlusChargeTruth << " MC-MinusChrgT=" << nMinusChargeTruth << endl;
 782
 783   //cout << "nCentrality "<< fCentrality <<", nParticleT="<< nPartileTruth << ", nMinusParticleT=" << nAntiParticleTruth << endl;
 784
 785   //cout << "----------------------------" << endl;
 786   fTHnCentNplusNminusChTruth->Fill(fContainerChTruth);
 787
 788   if( fUsePid ){
 789     gPid = (Int_t)fParticleSpecies;
 790     fTHnCentNplusNminusPidTruth[gPid]->Fill(fContainerPidTruth);
 791
 792   }
 793
 794
 795   fEventCounter->Fill(7);
 796
 797   return;
 798
 799 }
 800 //---------------------------------------------------------------------------------------
 801
 802 //---------------------------------------------------------------------------------------
 803 Bool_t AliHigherMomentsToyModel::ProperVertex(){
 804
 805   Bool_t IsVtx = kFALSE;
 806
 807   const AliAODVertex *vertex = fAOD->GetPrimaryVertex();
 808
 809   if(vertex) {
 810     Double32_t fCov[6];
 811     vertex->GetCovarianceMatrix(fCov);
 812     if(vertex->GetNContributors() > 0) {
 813       if(fCov[5] != 0) {
 814
 815         Double_t lvx = vertex->GetX();
 816         Double_t lvy = vertex->GetY();
 817         Double_t lvz = vertex->GetZ();
 818
 819         fEventCounter->Fill(5);
 820
 821         fHistQA[3]->Fill(lvx);fHistQA[4]->Fill(lvy);fHistQA[5]->Fill(lvz);
 822
 823         if(TMath::Abs(lvx) < fVxMax) {
 824           if(TMath::Abs(lvy) < fVyMax) {
 825             if(TMath::Abs(lvz) < fVzMax) {
 826
 827               fEventCounter->Fill(6);
 828               fHistQA[0]->Fill(lvx);fHistQA[1]->Fill(lvy);fHistQA[2]->Fill(lvz);
 829
 830               IsVtx = kTRUE;
 831
 832             }//Z-Vertex cut---
 833           }//Y-vertex cut--
 834         }//X-vertex cut---
 835       }//Covariance------
 836     }//Contributors check---
 837   }//If vertex-----------
 838
 839   return IsVtx;
 840 }
 841 //---------------------------------------------------------------------------------------
 842
 843
 844
 845 //------------------------------------------------------------------------
 846 void AliHigherMomentsToyModel::Terminate( Option_t * ){
 847
 848   Info("AliHigherMomentsToyModel"," Task Successfully finished");
 849
 850 }
 851
 852 //------------------------------------------------------------------------