PWGLF/SPECTRA/PiKaPr/TPCTOF/AliAnalysisCombinedHadronSpectra.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
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   9  * without fee, proviyaded 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 purapose. It is         *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 ///////////////////////////////////////////////////////////////////////////
  17 //                                                                       //
  18 //                                                                       //
  19 // Analysis for identified charged hadron spectra.                       //
  20 //                                                                       //
  21 //                                                                       //
  22 ///////////////////////////////////////////////////////////////////////////
  23
  24 #include "Riostream.h"
  25 #include "TChain.h"
  26 #include "TTree.h"
  27 #include "TH1F.h"
  28 #include "TH2D.h"
  29 #include "TH3F.h"
  30 #include "TList.h"
  31 #include "TMath.h"
  32 #include "TCanvas.h"
  33 #include "TObjArray.h"
  34 #include "TF1.h"
  35 #include "TFile.h"
  36
  37 #include "AliAnalysisTaskSE.h"
  38 #include "AliAnalysisManager.h"
  39
  40 #include "AliHeader.h"
  41 #include "AliGenPythiaEventHeader.h"
  42 #include "AliGenCocktailEventHeader.h"
  43
  44 #include "AliPID.h"
  45 #include "AliESDtrackCuts.h"
  46 #include "AliESDVertex.h"
  47 #include "AliESDEvent.h"
  48 #include "AliESDInputHandler.h"
  49 #include "AliESDtrack.h"
  50 #include "AliESDpid.h"
  51 #include "AliCentrality.h"
  52 #include "AliESDUtils.h"
  53 #include "AliMultiplicity.h"
  54
  55 #include "AliMCEventHandler.h"
  56 #include "AliMCEvent.h"
  57 #include "AliStack.h"
  58
  59 #include "AliLog.h"
  60
  61 #include "AliAnalysisCombinedHadronSpectra.h"
  62
  63
  64 ClassImp(AliAnalysisCombinedHadronSpectra)
  65
  66 //________________________________________________________________________
  67 AliAnalysisCombinedHadronSpectra::AliAnalysisCombinedHadronSpectra()
  68   : AliAnalysisTaskSE("TaskChargedHadron"), fESD(0), fListHist(0), fESDtrackCuts(0),fESDTrackCutsMult(0),fESDpid(0),
  69     fMCtrue(0),
  70     fOnlyQA(0),
  71     fUseHBTmultiplicity(0),
  72         fUseTPConlyTracks(0),
  73     fAlephParameters(),
  74     fHistRealTracks(0),
  75     fHistMCparticles(0),
  76     fHistPidQA(0),
  77     fHistMult(0),
  78     fHistCentrality(0)
  79 {
  80   // default Constructor
  81   /* fast compilation test
  82      gSystem->Load("libANALYSIS");
  83      gSystem->Load("libANALYSISalice");
  84      .L /d/alice09/akalweit/train/trunk/akalweit_hadronSpectra/AliAnalysisCombinedHadronSpectra.cxx++
  85    */
  86 }
  87
  88
  89 //________________________________________________________________________
  90 AliAnalysisCombinedHadronSpectra::AliAnalysisCombinedHadronSpectra(const char *name)
  91   : AliAnalysisTaskSE(name), fESD(0), fListHist(0), fESDtrackCuts(0),fESDTrackCutsMult(0),fESDpid(0),
  92     fMCtrue(0),
  93     fOnlyQA(0),
  94     fUseHBTmultiplicity(0),
  95         fUseTPConlyTracks(0),
  96     fAlephParameters(),
  97     fHistRealTracks(0),
  98     fHistMCparticles(0),
  99     fHistPidQA(0),
 100     fHistMult(0),
 101     fHistCentrality(0)
 102 {
 103   //
 104   // standard constructur which should be used
 105   //
 106   Printf("*** CONSTRUCTOR CALLED ****");
 107   //
 108   fMCtrue = kTRUE;
 109   fOnlyQA = kFALSE;
 110   fUseHBTmultiplicity = kTRUE;
 111   fUseTPConlyTracks = kFALSE;
 112   /* real */
 113   fAlephParameters[0] = 0.0283086;
 114   fAlephParameters[1] = 2.63394e+01;
 115   fAlephParameters[2] = 5.04114e-11;
 116   fAlephParameters[3] = 2.12543e+00;
 117   fAlephParameters[4] = 4.88663e+00;
 118   //
 119   // initialize PID object
 120   //
 121   //fESDpid = new AliESDpid();
 122   //
 123   // create track cuts
 124   //
 125   fESDtrackCuts = new AliESDtrackCuts("AliESDtrackCuts","AliESDtrackCuts");
 126   //
 127   //Initialize();
 128   // Output slot #0 writes into a TList container
 129   DefineOutput(1, TList::Class());
 130
 131 }
 132
 133
 134 //________________________________________________________________________
 135 void AliAnalysisCombinedHadronSpectra::Initialize()
 136 {
 137   //
 138   // updating parameters in case of changes
 139   //
 140   // 1. pid parameters
 141   //
 142   //fESDpid->GetTPCResponse().SetBetheBlochParameters(fAlephParameters[0],fAlephParameters[1],fAlephParameters[2],fAlephParameters[3],fAlephParameters[4]);
 143   //
 144   // 2. track cuts
 145   //
 146   /*
 147   fESDtrackCuts->SetMaxCovDiagonalElements(2, 2, 0.5, 0.5, 2);  // BEWARE STANDARD VALUES ARE: 2, 2, 0.5, 0.5, 2
 148   fESDtrackCuts->SetMaxNsigmaToVertex(3);
 149   fESDtrackCuts->SetRequireSigmaToVertex(kTRUE);
 150   fESDtrackCuts->SetAcceptKinkDaughters(kFALSE);
 151   fESDtrackCuts->SetMinNClustersTPC(70);
 152   fESDtrackCuts->SetMaxChi2PerClusterTPC(4);
 153   fESDtrackCuts->SetMaxDCAToVertexXY(3);
 154   fESDtrackCuts->SetMaxDCAToVertexZ(3);
 155   fESDtrackCuts->SetRequireTPCRefit(kTRUE);
 156   fESDtrackCuts->SetRequireITSRefit(kTRUE);
 157   fESDtrackCuts->SetClusterRequirementITS(AliESDtrackCuts::kSPD, AliESDtrackCuts::kAny); //TEMPORARY <-> REMOVE
 158   fESDtrackCuts->SetMinNClustersITS(3);
 159   */
 160   //fESDtrackCuts = AliESDtrackCuts::GetStandardITSTPCTrackCuts2010(kTRUE); // kTRUE = sel. primaries --> patch for the moment, do TFractionFitter later
 161
 162
 163   if (!fUseTPConlyTracks) {
 164           fESDtrackCuts = AliESDtrackCuts::GetStandardITSTPCTrackCuts2010(kFALSE);
 165           fESDtrackCuts->SetMaxDCAToVertexXY(3);
 166           fESDtrackCuts->SetMaxDCAToVertexZ(2);
 167           fESDtrackCuts->SetEtaRange(-0.9,0.9);
 168   }
 169   else {
 170           //fESDtrackCuts = AliESDtrackCuts::GetStandardTPCOnlyTrackCuts();
 171           fESDtrackCuts->SetMinNClustersTPC(70);
 172           fESDtrackCuts->SetMaxChi2PerClusterTPC(4);
 173           fESDtrackCuts->SetAcceptKinkDaughters(kFALSE);
 174           fESDtrackCuts->SetRequireTPCRefit(kFALSE);
 175
 176           fESDtrackCuts->SetMaxDCAToVertexXY(15);
 177           fESDtrackCuts->SetMaxDCAToVertexZ(6);
 178           fESDtrackCuts->SetDCAToVertex2D(kFALSE);
 179           fESDtrackCuts->SetRequireSigmaToVertex(kFALSE);
 180
 181           fESDtrackCuts->SetEtaRange(-0.9,0.9);
 182   }
 183   //
 184   //
 185   //
 186   //
 187   fESDTrackCutsMult = AliESDtrackCuts::GetStandardITSTPCTrackCuts2010(kTRUE);
 188   fESDTrackCutsMult->SetEtaRange(-1.2,+1.2);
 189   fESDTrackCutsMult->SetPtRange(0.15,1e10);
 190
 191 }
 192
 193
 194 //________________________________________________________________________
 195 void AliAnalysisCombinedHadronSpectra::UserCreateOutputObjects()
 196 {
 197   // Create histograms
 198   // Called once
 199   fListHist = new TList();
 200   fListHist->SetOwner(kTRUE);
 201   //
 202   const Int_t kPtBins = 35;
 203   const Int_t kMultBins = 11;
 204   const Int_t kDcaBins = 76;
 205   const Float_t kDcaBinsTPConlyFactor = 5; //need to change binning of DCA plot for tpconly
 206   // sort pT-bins ..
 207   Double_t binsPt[kPtBins+1] = {0., 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0};
 208
 209   Double_t binsDca[kDcaBins+1] =  {-3,-2.85,-2.7,-2.55,-2.4,-2.25,-2.1,-1.95,-1.8,-1.65,-1.5,-1.35,-1.2,-1.05,-0.9,-0.75,-0.6,-0.45,-0.3,-0.285,-0.27,-0.255,-0.24,-0.225,-0.21,-0.195,-0.18,-0.165,-0.15,-0.135,-0.12,-0.105,-0.09,-0.075,-0.06,-0.045,-0.03,-0.015,0,0.015,0.03,0.045,0.06,0.075,0.09,0.105,0.12,0.135,0.15,0.165,0.18,0.195,0.21,0.225,0.24,0.255,0.27,0.285,0.3,0.45,0.6,0.75,0.9,1.05,1.2,1.35,1.5,1.65,1.8,1.95,2.1,2.25,2.4,2.55,2.7,2.85,3};
 210
 211   // DCA bins borders get multiplied by constant factor for TPConlyTracks
 212   Double_t binsDcaTPConly[kDcaBins+1];
 213   for (Int_t i = 0; i< kDcaBins+1; i++) {
 214         binsDcaTPConly[i] = kDcaBinsTPConlyFactor * binsDca[i];
 215   }
 216
 217   //
 218   // create the histograms with all necessary information --> it is filled 4x for each particle assumption
 219   //
 220   // (0.) assumed particle: 0. pion, 1. kaon, 2. proton, 3. deuteron
 221   // (1.) multiplicity or centrality -- number of accepted ESD tracks per events (deprecated), but now classes from 1 to 10, 0: Min. Bias
 222   // (2.) pT
 223   // (3.) sign
 224   // (4.) rapidity --> filled 4x
 225   // (5.)  pull TPC dEx --> filled 4x
 226   // (6.) has valid TOF pid signal
 227   // (7.) nsigma TOF --> filled 4x
 228   // (8..) dca_xy
 229   // (9.) CODE -- only MC 0-generated, 1-true rec. primaries, 2-misident, 3-second weak, 4-second material
 230   //
 231   //                              0,           1,           2,  3,       4,   5,    6,   7,       8
 232   Int_t    binsHistReal[9] = {   3,   kMultBins,     kPtBins,  2,      10,   50,    2,  80, kDcaBins};
 233   Double_t xminHistReal[9] = {-0.5,        -0.5,           0, -2,    -0.5,   -5,- 0.5,  -8,       -3};
 234   Double_t xmaxHistReal[9] = { 2.5,        10.5,           3,  2,     0.5,    5,  1.5,   8,        3};
 235   fHistRealTracks = new THnSparseF("fHistRealTracks","real tracks",9,binsHistReal,xminHistReal,xmaxHistReal);
 236   //
 237   fHistRealTracks->GetAxis(2)->Set(kPtBins, binsPt);
 238
 239   //different DCAxy binning for TPConlyTracks
 240   if (!fUseTPConlyTracks) fHistRealTracks->GetAxis(8)->Set(kDcaBins, binsDca);
 241   else  fHistRealTracks->GetAxis(8)->Set(kDcaBins, binsDcaTPConly);
 242   fListHist->Add(fHistRealTracks);
 243   //
 244   //                      0.ptot,1.tpcSig,2.hasTOF, 3. assumed part., 4. nclDedx, 5. nSigmaTPC (4x), 6. nSigmaTOF (4x), 7. centrality
 245   fHistPidQA = new TH3D("fHistPidQA","PID QA",500,0.1,10,1000,0,1000,2,-2,2);
 246   BinLogAxis(fHistPidQA);
 247   fListHist->Add(fHistPidQA);
 248   //                            0,            1,           2,  3,      4,   5,    6,   7,        8,    9
 249   Int_t    binsHistMC[10] = {   3,    kMultBins,     kPtBins,  2,     10,  50,    2,  80, kDcaBins,    5};
 250   Double_t xminHistMC[10] = {-0.5,         -0.5,           0, -2,   -0.5,  -5,- 0.5,  -8,       -3, -0.5};
 251   Double_t xmaxHistMC[10] = { 2.5,         10.5,           3,  2,    0.5,   5,  1.5,   8,        3,  4.5};
 252   fHistMCparticles = new THnSparseF("fHistMCparticles","MC histogram",10,binsHistMC,xminHistMC,xmaxHistMC);
 253   fHistMCparticles->GetAxis(2)->Set(kPtBins, binsPt);
 254
 255   //different DCAxy binning for TPConlyTracks
 256   if (!fUseTPConlyTracks) fHistMCparticles->GetAxis(8)->Set(kDcaBins, binsDca);
 257   else fHistMCparticles->GetAxis(8)->Set(kDcaBins, binsDcaTPConly);
 258
 259   fListHist->Add(fHistMCparticles);
 260   //
 261   fHistMult = new TH2D("fHistMult", "control histogram to count number of events", 502, -2.5, 499.5,4,-0.5,3.5);
 262   fHistCentrality = new TH1D("fHistCentrality", "control histogram to count number of events", 22, -1.5, 20.5);
 263   fListHist->Add(fHistMult);
 264   fListHist->Add(fHistCentrality);
 265
 266 }
 267
 268 //________________________________________________________________________
 269 void AliAnalysisCombinedHadronSpectra::UserExec(Option_t *)
 270 {
 271   //
 272   // main event loop
 273   //
 274   if (!fESDpid) fESDpid = ((AliESDInputHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->GetESDpid();
 275   if (!fESDpid) {
 276     fESDpid = new AliESDpid(); // HACK FOR MC PBPB --> PLEASE REMOVE AS SOON AS POSSIBLE
 277     fESDpid->GetTPCResponse().SetBetheBlochParameters(1.28778e+00/50., 3.13539e+01, TMath::Exp(-3.16327e+01), 1.87901e+00, 6.41583e+00);
 278   }
 279   //AliLog::SetGlobalLogLevel(AliLog::kError);
 280   //
 281   // Check Monte Carlo information and other access first:
 282   //
 283   AliMCEventHandler* eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
 284   if (!eventHandler) {
 285     //Printf("ERROR: Could not retrieve MC event handler");
 286     fMCtrue = kFALSE;
 287   }
 288   //
 289   AliMCEvent* mcEvent = 0x0;
 290   AliStack* stack = 0x0;
 291   if (eventHandler) mcEvent = eventHandler->MCEvent();
 292   if (!mcEvent) {
 293     //Printf("ERROR: Could not retrieve MC event");
 294     if (fMCtrue) return;
 295   }
 296   if (fMCtrue) {
 297     stack = mcEvent->Stack();
 298     if (!stack) return;
 299   }
 300   //
 301   fESD = dynamic_cast<AliESDEvent*>( InputEvent() );
 302   if (!fESD) {
 303     //Printf("ERROR: fESD not available");
 304     return;
 305   }
 306
 307   if (!fESDtrackCuts) {
 308     Printf("ERROR: fESDtrackCuts not available");
 309     return;
 310   }
 311   //
 312   // check if event is selected by physics selection class
 313   //
 314   Bool_t isSelected = kTRUE; // for reasons of backward compatibility --> check is now in AddTask macro
 315   /*
 316   Bool_t isSelected = kFALSE;
 317   isSelected = (((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected() & AliVEvent::kMB) == AliVEvent::kMB;
 318   */
 319   //
 320   // monitor vertex position
 321   //
 322   const AliESDVertex *vertex = fESD->GetPrimaryVertexTracks();
 323   if(vertex->GetNContributors()<1) {
 324     // SPD vertex
 325     vertex = fESD->GetPrimaryVertexSPD();
 326     if(vertex->GetNContributors()<1) vertex = 0x0;
 327   }
 328   //
 329   // small track loop to determine trigger Pt, multiplicity or centrality
 330   //
 331   Double_t triggerPt = 0;
 332   for (Int_t i=0;i<fESD->GetNumberOfTracks();++i) {
 333     AliESDtrack *track =fESD->GetTrack(i);
 334     if (!fESDTrackCutsMult->AcceptTrack(track)) continue;
 335     if (track->Pt() > triggerPt) triggerPt = track->Pt();
 336   }
 337   Int_t trackCounter = fESDTrackCutsMult->CountAcceptedTracks(fESD);
 338   //
 339   // 2nd multiplicity estimator SPD hits; replaces multiplicity from HBT
 340   //
 341   Float_t spdCorr = -1;
 342   const AliMultiplicity *mult = fESD->GetMultiplicity();
 343   Float_t nClusters[6]={0.0,0.0,0.0,0.0,0.0,0.0};
 344   for(Int_t ilay=0; ilay<6; ilay++) nClusters[ilay] = (Float_t)mult->GetNumberOfITSClusters(ilay);
 345   if (vertex) spdCorr = AliESDUtils::GetCorrSPD2(nClusters[1],vertex->GetZ());
 346   //
 347   Float_t centrality = -1;
 348   //
 349   // IMPORTANT CENTRALITY DEFINITION FOR pp
 350   //
 351   if (!fUseHBTmultiplicity) {
 352     // test binning to check if multiplicity-dependence is due to diffractive events being s
 353     if (trackCounter >= 0  && trackCounter <= 0)  centrality = 0;
 354     if (trackCounter >= 1  && trackCounter <= 1)  centrality = 1;
 355     if (trackCounter >= 2  && trackCounter <= 2)  centrality = 2;
 356     if (trackCounter >= 3  && trackCounter <= 3)  centrality = 3;
 357     if (trackCounter >= 4  && trackCounter <= 4)  centrality = 4;
 358     if (trackCounter >= 5  && trackCounter <= 5)  centrality = 5;
 359     // this was all the original bin 1 being [0..5]
 360     if (trackCounter >= 6  && trackCounter <= 9)  centrality = 6;
 361     if (trackCounter >= 10 && trackCounter <= 14) centrality = 7;
 362     if (trackCounter >= 15 && trackCounter <= 22) centrality = 8;
 363     if (trackCounter >= 23 && trackCounter <= 32) centrality = 9;
 364     if (trackCounter >= 33 && trackCounter <= 42) centrality = 10;
 365     /*
 366     if (trackCounter >= 43 && trackCounter <= 52) centrality = 7
 367     if (trackCounter >= 53 && trackCounter <= 62) centrality = 8;
 368     if (trackCounter >= 63 && trackCounter <= 72) centrality = 9;
 369     if (trackCounter >= 73 && trackCounter <= 82) centrality = 10;
 370     */
 371   } else {
 372     if (spdCorr >= 0  && spdCorr <=  2)  centrality  = 0;
 373     if (spdCorr >= 3  && spdCorr <=  5)  centrality  = 1;
 374     if (spdCorr >= 6  && spdCorr <=  8)  centrality  = 2;
 375     if (spdCorr >= 9  && spdCorr <= 11)  centrality  = 3;
 376     if (spdCorr >= 12 && spdCorr <= 14)  centrality  = 4;
 377     if (spdCorr >= 15 && spdCorr <= 16)  centrality  = 5;
 378     // this was all the original bin 1 being [0..16]
 379     if (spdCorr >= 17 && spdCorr <= 30)  centrality =  6;
 380     if (spdCorr >= 31 && spdCorr <= 45)  centrality =  7;
 381     if (spdCorr >= 46 && spdCorr <= 68)  centrality =  8;
 382     if (spdCorr >= 69 && spdCorr <= 97)  centrality =  9;
 383     if (spdCorr >= 98)                   centrality = 10;
 384     /*
 385     if (spdCorr >= 17 && spdCorr <= 30)  centrality = 2;
 386     if (spdCorr >= 31 && spdCorr <= 45)  centrality = 3;
 387     if (spdCorr >= 46 && spdCorr <= 68)  centrality = 4;
 388     if (spdCorr >= 69 && spdCorr <= 97)  centrality = 5;
 389     if (spdCorr >= 98)                   centrality = 6;
 390     */
 391   }
 392   //
 393   Int_t rootS = fESD->GetBeamEnergy() < 1000 ? 0 : 1;
 394   if (fESD->GetEventSpecie() == 4) { // PbPb
 395     rootS = 2;
 396     AliCentrality *esdCentrality = fESD->GetCentrality();
 397     centrality = esdCentrality->GetCentralityClass10("V0M") + 1; // centrality percentile determined with V0
 398     if (TMath::Abs(centrality - 1) < 1e-5) {
 399       centrality = esdCentrality->GetCentralityClass5("V0M");
 400     }
 401   }
 402   Int_t nContributors = 0;
 403   if (fESD->GetPrimaryVertexTPC()) nContributors = fESD->GetPrimaryVertexTPC()->GetNContributors();
 404   //
 405   Int_t processtype = 0;
 406   Int_t processCode = 0;
 407   //
 408   // important change: fill generated only after vertex cut in case of heavy-ions
 409   //
 410   if (!vertex && fESD->GetEventSpecie() == 4) {
 411     fHistMult->Fill(-1, processCode);
 412     PostData(1, fListHist);
 413     return;
 414   } else {
 415     if (TMath::Abs(vertex->GetZv()) > 10 && fESD->GetEventSpecie() == 4) {
 416       fHistMult->Fill(-1, processCode);
 417       PostData(1, fListHist);
 418       return;
 419     }
 420   }
 421   //
 422   if (fMCtrue) {
 423     //
 424     //
 425     //
 426     AliHeader * header = mcEvent->Header();
 427     processtype = GetPythiaEventProcessType(header);
 428     // non diffractive
 429     if (processtype !=92 && processtype !=93 && processtype != 94) processCode = 1;
 430     // single diffractive
 431     if ((processtype == 92 || processtype == 93)) processCode = 2;
 432     // double diffractive
 433     if (processtype == 94) processCode = 3;
 434     //
 435     for(Int_t i = 0; i < stack->GetNtrack(); i++) {
 436       TParticle * trackMC = stack->Particle(i);
 437       Int_t pdg = trackMC->GetPdgCode();
 438       //
 439       Double_t xv = trackMC->Vx();
 440       Double_t yv = trackMC->Vy();
 441       Double_t zv = trackMC->Vz();
 442       Double_t dxy = 0;
 443       dxy = TMath::Sqrt(xv*xv + yv*yv); // so stupid to avoid warnings
 444       Double_t dz = 0;
 445       dz = TMath::Abs(zv); // so stupid to avoid warnings
 446       //
 447       // vertex cut - selection of primaries
 448       //
 449       //if (dxy > 3 || dz > 10) continue; // fixed cut at 3cm in r
 450       //
 451       if (!stack->IsPhysicalPrimary(i)) continue;
 452       //
 453       // fill MC histograms here...
 454       //
 455       Double_t rap = trackMC->Y();
 456       Double_t pT  = trackMC->Pt();
 457       Int_t sign = pdg < 0 ? -1 : 1; // only works for charged pi,K,p !!
 458 //      Double_t transMass = TMath::Sqrt(trackMC->Pt()*trackMC->Pt() + trackMC->GetMass()*trackMC->GetMass()) - trackMC->GetMass();
 459       //
 460       Int_t iPart = -1;
 461       if (TMath::Abs(pdg) == 211)  iPart = 0; // select Pi+/Pi- only
 462       if (TMath::Abs(pdg) == 321)  iPart = 1; // select K+/K- only
 463       if (TMath::Abs(pdg) == 2212) iPart = 2; // select p+/p- only
 464       if (iPart == -1) continue;
 465       //
 466       Double_t vecHistMC[10] = {iPart, centrality,  pT, sign, rap, 0, 1, 0, dxy, 0};
 467       if (!fOnlyQA) fHistMCparticles->Fill(vecHistMC);
 468     }
 469   }
 470   //
 471   if (!isSelected && !fOnlyQA) {
 472     PostData(1, fListHist);
 473     return;
 474   }
 475   //
 476   if (!vertex) {
 477     fHistMult->Fill(-1, processCode);
 478     PostData(1, fListHist);
 479     return;
 480   } else {
 481     if (TMath::Abs(vertex->GetZv()) > 10) {
 482       fHistMult->Fill(-1, processCode);
 483       PostData(1, fListHist);
 484       return;
 485     }
 486   }
 487   //
 488   // count events after physics selection and after vertex selection
 489   //
 490   //cout << "MULTIPLICITY " << trackCounter << " " << fESD->GetEventNumberInFile() <<endl;
 491   fHistMult->Fill(trackCounter, processCode);
 492   fHistCentrality->Fill(centrality);
 493
 494
 495   //***************************************************
 496   // track loop
 497   //***************************************************
 498   //const Float_t kNsigmaCut = 3;
 499   //const Float_t k2sigmaCorr = 1/(0.5*(TMath::Erf(kNsigmaCut/sqrt(2))-TMath::Erf(-kNsigmaCut/sqrt(2))))/*1/0.9545*/;
 500   //
 501   Float_t dca[2], cov[3]; // dca_xy, dca_z, sigma_xy, sigma_xy_z, sigma_z for the vertex cut
 502   //
 503   for (Int_t i=0;i<fESD->GetNumberOfTracks();++i) {
 504
 505         AliESDtrack *track = 0;
 506     AliESDtrack *trackForTOF = 0; //normal track for all TOF information needed when using tpconly-tracks
 507
 508         //normal tracks, if tpconly flag is set, use tpconlytracks
 509         if (!fUseTPConlyTracks){
 510         track =fESD->GetTrack(i);
 511         }
 512         else {
 513                 track = fESDtrackCuts->GetTPCOnlyTrack(fESD,i);
 514                 if (!track) continue;
 515                 trackForTOF = fESD->GetTrack(i);
 516         }
 517     //
 518     if (!track->GetInnerParam()) {
 519                 if (fUseTPConlyTracks) {delete track; track = 0;} //need to delete tpconlytrack
 520                 continue;
 521         }
 522     Double_t ptot = track->GetInnerParam()->GetP(); // momentum for dEdx determination
 523     Double_t pT = track->Pt();
 524     track->GetImpactParameters(dca, cov);
 525     //
 526     //
 527     // cut for dead regions in the detector
 528     // if (track->Eta() > 0.1 && (track->Eta() < 0.2 && track->Phi() > 0.1 && track->Phi() < 0.1) continue;
 529     //
 530     // 2.a) apply some standard track cuts according to general recommendations
 531     //
 532     if (!fESDtrackCuts->AcceptTrack(track)) {
 533                 if (fUseTPConlyTracks) {delete track; track = 0;} //need to delete tpconlytrack
 534                 continue;
 535         }
 536
 537         UInt_t status = 0;
 538     if (!fUseTPConlyTracks) status = track->GetStatus();
 539         else status = trackForTOF->GetStatus();
 540     Bool_t hasTOFout  = status&AliESDtrack::kTOFout;
 541     Bool_t hasTOFtime = status&AliESDtrack::kTIME;
 542     Bool_t hasTOFpid  = status&AliESDtrack::kTOFpid;
 543     Bool_t hasTOF     = kFALSE;
 544     if (hasTOFout && hasTOFtime && hasTOFpid) hasTOF = kTRUE;
 545         Float_t length = 0.;
 546     if (!fUseTPConlyTracks) length = track->GetIntegratedLength();
 547     else length = trackForTOF->GetIntegratedLength();
 548
 549     if (length < 350.) hasTOF = kFALSE;
 550     //
 551     // calculate rapidities and kinematics
 552     //
 553     //
 554     Double_t pvec[3];
 555     track->GetPxPyPz(pvec);
 556     Double_t energyPion = TMath::Sqrt(track->GetP()*track->GetP() + AliPID::ParticleMass(AliPID::kPion)*AliPID::ParticleMass(AliPID::kPion));
 557     Double_t energyKaon = TMath::Sqrt(track->GetP()*track->GetP() + AliPID::ParticleMass(AliPID::kKaon)*AliPID::ParticleMass(AliPID::kKaon));
 558     Double_t energyProton = TMath::Sqrt(track->GetP()*track->GetP() + AliPID::ParticleMass(AliPID::kProton)*AliPID::ParticleMass(AliPID::kProton));
 559     Double_t energyDeuteron = TMath::Sqrt(track->GetP()*track->GetP() + 4*AliPID::ParticleMass(AliPID::kProton)*AliPID::ParticleMass(AliPID::kProton));
 560     //
 561     Double_t rapPion = 0.5*TMath::Log((energyPion + pvec[2])/(energyPion - pvec[2]));
 562     Double_t rapKaon = 0.5*TMath::Log((energyKaon + pvec[2])/(energyKaon - pvec[2]));
 563     Double_t rapProton = 0.5*TMath::Log((energyProton + pvec[2])/(energyProton - pvec[2]));
 564     Double_t rapDeuteron = 0.5*TMath::Log((energyDeuteron + pvec[2])/(energyDeuteron - pvec[2]));
 565     //
 566 //    Double_t transMassPion = TMath::Sqrt(track->Pt()*track->Pt() + AliPID::ParticleMass(AliPID::kPion)*AliPID::ParticleMass(AliPID::kPion))      -  AliPID::ParticleMass(AliPID::kPion);
 567 //    Double_t transMassKaon = TMath::Sqrt(track->Pt()*track->Pt() + AliPID::ParticleMass(AliPID::kKaon)*AliPID::ParticleMass(AliPID::kKaon))     -  AliPID::ParticleMass(AliPID::kKaon);
 568  //   Double_t transMassProton = TMath::Sqrt(track->Pt()*track->Pt() + AliPID::ParticleMass(AliPID::kProton)*AliPID::ParticleMass(AliPID::kProton))    -  AliPID::ParticleMass(AliPID::kProton);
 569 //    Double_t transMassDeuteron = TMath::Sqrt(track->Pt()*track->Pt() + 4*AliPID::ParticleMass(AliPID::kProton)*AliPID::ParticleMass(AliPID::kProton))    -  2*AliPID::ParticleMass(AliPID::kProton);
 570     //
 571     // 3. make the PID
 572     //
 573     Double_t sign = track->GetSign();
 574     Double_t tpcSignal = track->GetTPCsignal();
 575     //
 576     //
 577     // 3.a. calculate expected signals in nsigma
 578     //
 579     //
 580     // (0.) assumed particle: 0. pion, 1. kaon, 2. proton, 3. deuteron
 581     // (1.) multiplicity or centrality -- number of accepted ESD tracks per events (deprecated), but now classes from 1 to 10, 0: Min. Bias
 582     // (2.) pT
 583     // (3.) sign
 584     // (4.) rapidity --> filled 4x
 585     // (5.)  pull TPC dEx --> filled 4x
 586     // (6.) has valid TOF pid signal
 587     // (7.) nsigma TOF --> filled 4x
 588     // (8..) dca_xy
 589     // (9.) CODE -- only MC 0-generated, 1-true rec. primaries, 2-misident, 3-second weak, 4-second material
 590     //
 591 //    Double_t transMass[4] = {transMassPion,transMassKaon,transMassProton,transMassDeuteron};
 592     Double_t rap[4] = {rapPion,rapKaon,rapProton,rapDeuteron};
 593     Double_t pullsTPC[4] = {fESDpid->NumberOfSigmasTPC(track,AliPID::kPion),
 594                             fESDpid->NumberOfSigmasTPC(track,AliPID::kKaon),
 595                             fESDpid->NumberOfSigmasTPC(track,AliPID::kProton),
 596                             0}; // ASK FOR PUTTING THE DEUTERON TO AliPID !!!!!!!!!!!!!!
 597     Float_t time0 = fESDpid->GetTOFResponse().GetTimeZero();
 598     //fESDpid->GetTOFResponse().SetTimeResolution(130.);
 599     Double_t pullsTOF[4] ={0.,0.,0.,0.};
 600     if (!fUseTPConlyTracks) {
 601                          pullsTOF[0] = fESDpid->NumberOfSigmasTOF(track,AliPID::kPion, time0);
 602                              pullsTOF[1] = fESDpid->NumberOfSigmasTOF(track,AliPID::kKaon, time0);
 603                              pullsTOF[2] = fESDpid->NumberOfSigmasTOF(track,AliPID::kProton, time0);
 604                              pullsTOF[3] = 0; // ASK FOR PUTTING THE DEUTERON TO AliPID !!!!!!!!!!!!!!;
 605         }
 606         else {
 607                          pullsTOF[0] = fESDpid->NumberOfSigmasTOF(trackForTOF,AliPID::kPion, time0);
 608                              pullsTOF[1] = fESDpid->NumberOfSigmasTOF(trackForTOF,AliPID::kKaon, time0);
 609                              pullsTOF[2] = fESDpid->NumberOfSigmasTOF(trackForTOF,AliPID::kProton, time0);
 610                              pullsTOF[3] = 0; // ASK FOR PUTTING THE DEUTERON TO AliPID !!!!!!!!!!!!!!;
 611         }
 612
 613     //
 614 //    Double_t tpcQA[4] = {fESDpid->NumberOfSigmasTPC(track,AliPID::kElectron),
 615 //                       fESDpid->NumberOfSigmasTPC(track,AliPID::kPion),
 616 //                       fESDpid->NumberOfSigmasTPC(track,AliPID::kKaon),
 617 //                       fESDpid->NumberOfSigmasTPC(track,AliPID::kProton)};
 618
 619     Double_t tofQA[4] = {0.,0.,0.,0.};
 620     if (!fUseTPConlyTracks) {
 621                  tofQA[0] = fESDpid->NumberOfSigmasTOF(track,AliPID::kElectron, time0);
 622                          tofQA[0] = fESDpid->NumberOfSigmasTOF(track,AliPID::kPion, time0);
 623                  tofQA[0] = fESDpid->NumberOfSigmasTOF(track,AliPID::kKaon, time0);
 624                  tofQA[0] = fESDpid->NumberOfSigmasTOF(track,AliPID::kProton, time0);
 625         }
 626         else{
 627                  tofQA[0] = fESDpid->NumberOfSigmasTOF(trackForTOF,AliPID::kElectron, time0);
 628                          tofQA[0] = fESDpid->NumberOfSigmasTOF(trackForTOF,AliPID::kPion, time0);
 629                  tofQA[0] = fESDpid->NumberOfSigmasTOF(trackForTOF,AliPID::kKaon, time0);
 630                  tofQA[0] = fESDpid->NumberOfSigmasTOF(trackForTOF,AliPID::kProton, time0);
 631         }
 632
 633     //
 634     for(Int_t iPart = 0; iPart < 3; iPart++) { // loop over assumed particle type
 635       //                              0,           1,    2,    3,           4,               5,      6,              7,     8
 636       Double_t vecHistReal[9]  = {iPart,  centrality,   pT, sign,  rap[iPart], pullsTPC[iPart], hasTOF, pullsTOF[iPart], dca[0]};
 637       if (!fOnlyQA) fHistRealTracks->Fill(vecHistReal);
 638       //
 639       // using MC truth for precise efficiencies...
 640       //
 641       if (fMCtrue && !fOnlyQA) {
 642         Int_t code = 5; // code: 0-generated, 1-true rec. primaries, 2-misident, 3-second weak, 4-second material
 643         Int_t assumedPdg = 0;//2212(proton); 321(Kaon); 211(pion);
 644         if (iPart == 0) assumedPdg = 211;
 645         if (iPart == 1) assumedPdg = 321;
 646         if (iPart == 2) assumedPdg = 2212;
 647         //
 648         //
 649         TParticle *trackMC = stack->Particle(TMath::Abs(track->GetLabel()));
 650         Int_t pdg = TMath::Abs(trackMC->GetPdgCode());
 651         //
 652         if (pdg != assumedPdg) code = 2;
 653         if (pdg == assumedPdg && stack->IsPhysicalPrimary(TMath::Abs(track->GetLabel()))) code = 1;
 654         if (pdg == assumedPdg && stack->IsSecondaryFromWeakDecay(TMath::Abs(track->GetLabel()))) code = 3;
 655         if (pdg == assumedPdg && stack->IsSecondaryFromMaterial(TMath::Abs(track->GetLabel()))) code = 4;
 656         //
 657         // muons need special treatment, because they are indistinguishable from pions
 658         //
 659         if (iPart == 0 && pdg == 13  && stack->IsPhysicalPrimary(TMath::Abs(track->GetLabel()))) code = 1;
 660         if (iPart == 0 && pdg == 13  && stack->IsSecondaryFromWeakDecay(TMath::Abs(track->GetLabel()))) code = 3;
 661         //
 662         // check TOF mismatch on MC basis with TOF label
 663         //
 664         Int_t tofLabel[3];
 665         if (!fUseTPConlyTracks) track->GetTOFLabel(tofLabel);
 666         else trackForTOF->GetTOFLabel(tofLabel);
 667         if (TMath::Abs(track->GetLabel()) != TMath::Abs(tofLabel[0])) hasTOF = kFALSE;
 668         //
 669         // IMPORTANT BIG PROBLEM HERE THE PROBABLILITY TO HAVE A PID SIGNAL MUST BE IN !!!!!!!!!!!!
 670         //
 671         //                              0,           1,   2,    3,           4,               5,      6,               7,      8,   9
 672         Double_t vectorHistMC[10] = {iPart,  centrality,  pT, sign,  rap[iPart], pullsTPC[iPart], hasTOF, pullsTOF[iPart], dca[0], code};
 673         if (!fOnlyQA) fHistMCparticles->Fill(vectorHistMC);
 674       }
 675       //
 676       //
 677       Int_t tpcShared = track->GetTPCnclsS();
 678       if (TMath::Abs(track->Eta()) < 0.8 && iPart == 0 && tpcShared < 4) fHistPidQA->Fill(ptot,tpcSignal,sign);
 679     } // end loop over assumed particle type
 680
 681           //need to delete tpconlytrack
 682           if (fUseTPConlyTracks){
 683                 delete track;
 684                 track = 0;
 685           }
 686
 687   } // end of track loop
 688
 689   // Post output data
 690   PostData(1, fListHist);
 691
 692 }
 693
 694
 695 //________________________________________________________________________
 696 void AliAnalysisCombinedHadronSpectra::Terminate(Option_t *)
 697 {
 698   // Draw result to the screen
 699   // Called once at the end of the query
 700   Printf("*** CONSTRUCTOR CALLED ****");
 701
 702 }
 703
 704
 705 //________________________________________________________________________
 706 Bool_t AliAnalysisCombinedHadronSpectra::SelectOnImpPar(AliESDtrack* t) {
 707   //
 708   // cut on transverse impact parameter // DEPRECATED
 709   //
 710   Float_t d0z0[2],covd0z0[3];
 711   t->GetImpactParameters(d0z0,covd0z0);
 712   Float_t sigma= 0.0050+0.0060/TMath::Power(t->Pt(),0.9);
 713   Float_t d0max = 7.*sigma;
 714   //
 715   Float_t sigmaZ = 0.0146+0.0070/TMath::Power(t->Pt(),1.114758);
 716   if (t->Pt() > 1) sigmaZ = 0.0216;
 717   Float_t d0maxZ = 5.*sigmaZ;
 718   //
 719   if(TMath::Abs(d0z0[0]) < d0max && TMath::Abs(d0z0[1]) < d0maxZ) return kTRUE;
 720   return kFALSE;
 721 }
 722
 723
 724 //________________________________________________________________________
 725 void AliAnalysisCombinedHadronSpectra::BinLogAxis(const TH1 *h) {
 726   //
 727   // Method for the correct logarithmic binning of histograms
 728   //
 729   TAxis *axis = h->GetXaxis();
 730   int bins = axis->GetNbins();
 731
 732   Double_t from = axis->GetXmin();
 733   Double_t to = axis->GetXmax();
 734   Double_t *newBins = new Double_t[bins + 1];
 735
 736   newBins[0] = from;
 737   Double_t factor = pow(to/from, 1./bins);
 738
 739   for (int i = 1; i <= bins; i++) {
 740    newBins[i] = factor * newBins[i-1];
 741   }
 742   axis->Set(bins, newBins);
 743   delete [] newBins;
 744
 745 }
 746
 747
 748 //________________________________________________________________________
 749 Int_t AliAnalysisCombinedHadronSpectra::GetPythiaEventProcessType(const AliHeader* aHeader, const Bool_t adebug) const {
 750   //
 751   // get the process type of the event.
 752   //
 753
 754   // can only read pythia headers, either directly or from cocktalil header
 755   AliGenPythiaEventHeader* pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(aHeader->GenEventHeader());
 756
 757   if (!pythiaGenHeader) {
 758
 759     AliGenCocktailEventHeader* genCocktailHeader = dynamic_cast<AliGenCocktailEventHeader*>(aHeader->GenEventHeader());
 760     if (!genCocktailHeader) {
 761       //printf("AliAnalysisCombinedHadronSpectra::GetProcessType : Unknown header type (not Pythia or Cocktail). \n");
 762       return -1;
 763     }
 764
 765     TList* headerList = genCocktailHeader->GetHeaders();
 766     if (!headerList) {
 767       return -1;
 768     }
 769
 770     for (Int_t i=0; i<headerList->GetEntries(); i++) {
 771       pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(headerList->At(i));
 772       if (pythiaGenHeader)
 773         break;
 774     }
 775
 776     if (!pythiaGenHeader) {
 777       //printf("AliAnalysisCombinedHadronSpectra::GetProcessType : Could not find Pythia header. \n");
 778       return -1;
 779     }
 780   }
 781
 782   if (adebug) {
 783     //printf("AliAnalysisCombinedHadronSpectra::GetProcessType : Pythia process type found: %d \n",pythiaGenHeader->ProcessType());
 784   }
 785
 786   return pythiaGenHeader->ProcessType();
 787 }