PWGUD/UPC/AliAnalysisTaskUpcPsi2s.cxx

   1 /*************************************************************************
   2 * Copyright(c) 1998-2008, 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   *
   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 // c++ headers
  17 #include <iostream>
  18 #include <string.h>
  19
  20 // root headers
  21 #include "TH1I.h"
  22 #include "TTree.h"
  23 #include "TClonesArray.h"
  24 #include "TParticle.h"
  25 #include "TObjString.h"
  26 #include "TFile.h"
  27 #include "TDatabasePDG.h"
  28 #include "TLorentzVector.h"
  29
  30 // aliroot headers
  31 #include "AliAnalysisManager.h"
  32 #include "AliInputEventHandler.h"
  33 #include "AliESDEvent.h"
  34 #include "AliAODEvent.h"
  35 #include "AliMCEvent.h"
  36 #include "AliAODVZERO.h"
  37 #include "AliAODZDC.h"
  38 #include "AliESDVZERO.h"
  39 #include "AliESDZDC.h"
  40 #include "AliPIDResponse.h"
  41 #include "AliAODTrack.h"
  42 #include "AliAODPid.h"
  43 #include "AliAODVertex.h"
  44 #include "AliESDVertex.h"
  45 #include "AliMultiplicity.h"
  46 #include "AliESDtrack.h"
  47 #include "AliESDMuonTrack.h"
  48 #include "AliAODMCParticle.h"
  49 #include "AliMCParticle.h"
  50 #include "AliCentrality.h"
  51 #include "AliKFVertex.h"
  52 #include "AliExternalTrackParam.h"
  53 #include "AliTriggerAnalysis.h"
  54
  55 // my headers
  56 #include "AliAnalysisTaskUpcPsi2s.h"
  57
  58 ClassImp(AliAnalysisTaskUpcPsi2s);
  59
  60 using std::cout;
  61 using std::endl;
  62
  63 //trees for UPC analysis,
  64 // michal.broz@cern.ch
  65
  66 //_____________________________________________________________________________
  67 AliAnalysisTaskUpcPsi2s::AliAnalysisTaskUpcPsi2s()
  68   : AliAnalysisTaskSE(),fType(0),isMC(kFALSE),fRunTree(kTRUE),fRunHist(kTRUE),fRunSystematics(kFALSE),fPIDResponse(0),fJPsiTree(0),fPsi2sTree(0),
  69     fRunNum(0),fPerNum(0),fOrbNum(0),fL0inputs(0),fL1inputs(0),
  70     fTOFtrig1(0), fTOFtrig2(0),
  71     fVtxContrib(0),fVtxChi2(0),fVtxNDF(0),
  72     fBCrossNum(0),fNtracklets(0),fNLooseTracks(0),
  73     fZDCAenergy(0),fZDCCenergy(0),fV0Adecision(0),fV0Cdecision(0),
  74     fDataFilnam(0),fRecoPass(0),fEvtNum(0),
  75     fJPsiAODTracks(0),fJPsiESDTracks(0),fPsi2sAODTracks(0),fPsi2sESDTracks(0),fGenPart(0),
  76     fListTrig(0),fHistCcup4TriggersPerRun(0), fHistCcup7TriggersPerRun(0), fHistCcup2TriggersPerRun(0),fHistCint1TriggersPerRun(0),
  77     fHistZedTriggersPerRun(0),fHistCvlnTriggersPerRun(0), fHistMBTriggersPerRun(0),fHistCentralTriggersPerRun(0),fHistSemiCentralTriggersPerRun(0),
  78     fListHist(0),fHistNeventsJPsi(0),fHistTPCsignalJPsi(0),fHistDiLeptonPtJPsi(0),fHistDiElectronMass(0),fHistDiMuonMass(0),fHistDiLeptonMass(0),
  79     fHistNeventsPsi2s(0),fHistPsi2sMassVsPt(0),fHistPsi2sMassCoherent(0),
  80     fListSystematics(0),fListJPsiLoose(0),fListJPsiTight(0),fListPsi2sLoose(0),fListPsi2sTight(0)
  81
  82 {
  83
  84 //Dummy constructor
  85
  86 }//AliAnalysisTaskUpcPsi2s
  87
  88
  89 //_____________________________________________________________________________
  90 AliAnalysisTaskUpcPsi2s::AliAnalysisTaskUpcPsi2s(const char *name)
  91   : AliAnalysisTaskSE(name),fType(0),isMC(kFALSE),fRunTree(kTRUE),fRunHist(kTRUE),fRunSystematics(kFALSE),fPIDResponse(0),fJPsiTree(0),fPsi2sTree(0),
  92     fRunNum(0),fPerNum(0),fOrbNum(0),fL0inputs(0),fL1inputs(0),
  93     fTOFtrig1(0), fTOFtrig2(0),
  94     fVtxContrib(0),fVtxChi2(0),fVtxNDF(0),
  95     fBCrossNum(0),fNtracklets(0),fNLooseTracks(0),
  96     fZDCAenergy(0),fZDCCenergy(0),fV0Adecision(0),fV0Cdecision(0),
  97     fDataFilnam(0),fRecoPass(0),fEvtNum(0),
  98     fJPsiAODTracks(0),fJPsiESDTracks(0),fPsi2sAODTracks(0),fPsi2sESDTracks(0),fGenPart(0),
  99     fListTrig(0),fHistCcup4TriggersPerRun(0), fHistCcup7TriggersPerRun(0), fHistCcup2TriggersPerRun(0),fHistCint1TriggersPerRun(0),
 100     fHistZedTriggersPerRun(0),fHistCvlnTriggersPerRun(0), fHistMBTriggersPerRun(0),fHistCentralTriggersPerRun(0),fHistSemiCentralTriggersPerRun(0),
 101     fListHist(0),fHistNeventsJPsi(0),fHistTPCsignalJPsi(0),fHistDiLeptonPtJPsi(0),fHistDiElectronMass(0),fHistDiMuonMass(0),fHistDiLeptonMass(0),
 102     fHistNeventsPsi2s(0),fHistPsi2sMassVsPt(0),fHistPsi2sMassCoherent(0),
 103     fListSystematics(0),fListJPsiLoose(0),fListJPsiTight(0),fListPsi2sLoose(0),fListPsi2sTight(0)
 104
 105 {
 106
 107   // Constructor
 108   if( strstr(name,"ESD") ) fType = 0;
 109   if( strstr(name,"AOD") ) fType = 1;
 110
 111   Init();
 112
 113   DefineOutput(1, TTree::Class());
 114   DefineOutput(2, TTree::Class());
 115   DefineOutput(3, TList::Class());
 116   DefineOutput(4, TList::Class());
 117
 118 }//AliAnalysisTaskUpcPsi2s
 119
 120 //_____________________________________________________________________________
 121 void AliAnalysisTaskUpcPsi2s::Init()
 122 {
 123
 124   for(Int_t i=0; i<ntrg; i++) fTrigger[i] = kFALSE;
 125   for(Int_t i=0; i<4; i++) {
 126         fTOFphi[i] = -666;
 127         fPIDTPCMuon[i] = -666;
 128         fPIDTPCElectron[i] = -666;
 129         fPIDTPCPion[i] = -666;
 130         fPIDTPCKaon[i] = -666;
 131         fPIDTPCProton[i] = -666;
 132
 133         fPIDTOFMuon[i] = -666;
 134         fPIDTOFElectron[i] = -666;
 135         fPIDTOFPion[i] = -666;
 136         fPIDTOFKaon[i] = -666;
 137         fPIDTOFProton[i] = -666;
 138
 139         fTriggerInputsMC[i] = kFALSE;
 140         }
 141   for(Int_t i=0; i<3; i++){
 142         fVtxPos[i] = -666;
 143         fVtxErr[i] = -666;
 144         fKfVtxPos[i] = -666;
 145         fSpdVtxPos[i] = -666;
 146         }
 147
 148 }//Init
 149
 150 //_____________________________________________________________________________
 151 AliAnalysisTaskUpcPsi2s::~AliAnalysisTaskUpcPsi2s()
 152 {
 153   // Destructor
 154   if(fJPsiTree){
 155      delete fJPsiTree;
 156      fJPsiTree = 0x0;
 157   }
 158   if(fPsi2sTree){
 159      delete fPsi2sTree;
 160      fPsi2sTree = 0x0;
 161   }
 162   if(fListTrig){
 163      delete fListTrig;
 164      fListTrig = 0x0;
 165   }
 166   if(fListHist){
 167      delete fListHist;
 168      fListHist = 0x0;
 169   }
 170
 171 }//~AliAnalysisTaskUpcPsi2s
 172
 173
 174 //_____________________________________________________________________________
 175 void AliAnalysisTaskUpcPsi2s::UserCreateOutputObjects()
 176 {
 177   //PID response
 178   AliAnalysisManager *man = AliAnalysisManager::GetAnalysisManager();
 179   AliInputEventHandler *inputHandler = (AliInputEventHandler*) (man->GetInputEventHandler());
 180   fPIDResponse = inputHandler->GetPIDResponse();
 181
 182   //input file
 183   fDataFilnam = new TObjString();
 184   fDataFilnam->SetString("");
 185
 186     //tracks
 187   fJPsiAODTracks = new TClonesArray("AliAODTrack", 1000);
 188   fJPsiESDTracks = new TClonesArray("AliESDtrack", 1000);
 189   fPsi2sAODTracks = new TClonesArray("AliAODTrack", 1000);
 190   fPsi2sESDTracks = new TClonesArray("AliESDtrack", 1000);
 191   fGenPart = new TClonesArray("TParticle", 1000);
 192
 193   //output tree with JPsi candidate events
 194   fJPsiTree = new TTree("fJPsiTree", "fJPsiTree");
 195   fJPsiTree ->Branch("fRunNum", &fRunNum, "fRunNum/I");
 196   fJPsiTree ->Branch("fPerNum", &fPerNum, "fPerNum/i");
 197   fJPsiTree ->Branch("fOrbNum", &fOrbNum, "fOrbNum/i");
 198
 199   fJPsiTree ->Branch("fBCrossNum", &fBCrossNum, "fBCrossNum/s");
 200   fJPsiTree ->Branch("fTrigger", &fTrigger[0], Form("fTrigger[%i]/O", ntrg));
 201   fJPsiTree ->Branch("fL0inputs", &fL0inputs, "fL0inputs/i");
 202   fJPsiTree ->Branch("fL1inputs", &fL1inputs, "fL1inputs/i");
 203   fJPsiTree ->Branch("fNtracklets", &fNtracklets, "fNtracklets/s");
 204   fJPsiTree ->Branch("fNLooseTracks", &fNLooseTracks, "fNLooseTracks/s");
 205   fJPsiTree ->Branch("fVtxContrib", &fVtxContrib, "fVtxContrib/I");
 206
 207   fJPsiTree ->Branch("fTOFtrig1", &fTOFtrig1, "fTOFtrig1/O");
 208   fJPsiTree ->Branch("fTOFtrig2", &fTOFtrig2, "fTOFtrig2/O");
 209   fJPsiTree ->Branch("fTOFphi", &fTOFphi[0], "fTOFphi[4]/D");
 210
 211   fJPsiTree ->Branch("fPIDTPCMuon", &fPIDTPCMuon[0], "fPIDTPCMuon[4]/D");
 212   fJPsiTree ->Branch("fPIDTPCElectron", &fPIDTPCElectron[0], "fPIDTPCElectron[4]/D");
 213   fJPsiTree ->Branch("fPIDTPCPion", &fPIDTPCPion[0], "fPIDTPCPion[4]/D");
 214   fJPsiTree ->Branch("fPIDTPCKaon", &fPIDTPCKaon[0], "fPIDTPCKaon[4]/D");
 215   fJPsiTree ->Branch("fPIDTPCProton", &fPIDTPCProton[0], "fPIDTPCProton[4]/D");
 216
 217   fJPsiTree ->Branch("fPIDTOFMuon", &fPIDTOFMuon[0], "fPIDTOFMuon[4]/D");
 218   fJPsiTree ->Branch("fPIDTOFElectron", &fPIDTOFElectron[0], "fPIDTOFElectron[4]/D");
 219   fJPsiTree ->Branch("fPIDTOFPion", &fPIDTOFPion[0], "fPIDTOFPion[4]/D");
 220   fJPsiTree ->Branch("fPIDTOFKaon", &fPIDTOFKaon[0], "fPIDTOFKaon[4]/D");
 221   fJPsiTree ->Branch("fPIDTOFProton", &fPIDTOFProton[0], "fPIDTOFProton[4]/D");
 222
 223   fJPsiTree ->Branch("fVtxPos", &fVtxPos[0], "fVtxPos[3]/D");
 224   fJPsiTree ->Branch("fVtxErr", &fVtxErr[0], "fVtxErr[3]/D");
 225   fJPsiTree ->Branch("fVtxChi2", &fVtxChi2, "fVtxChi2/D");
 226   fJPsiTree ->Branch("fVtxNDF", &fVtxNDF, "fVtxNDF/D");
 227
 228   fJPsiTree ->Branch("fKfVtxPos", &fKfVtxPos[0], "fKfVtxPos[3]/D");
 229   fJPsiTree ->Branch("fSpdVtxPos", &fSpdVtxPos[0], "fSpdVtxPos[3]/D");
 230
 231   fJPsiTree ->Branch("fZDCAenergy", &fZDCAenergy, "fZDCAenergy/D");
 232   fJPsiTree ->Branch("fZDCCenergy", &fZDCCenergy, "fZDCCenergy/D");
 233   fJPsiTree ->Branch("fV0Adecision", &fV0Adecision, "fV0Adecision/I");
 234   fJPsiTree ->Branch("fV0Cdecision", &fV0Cdecision, "fV0Cdecision/I");
 235   fJPsiTree ->Branch("fDataFilnam", &fDataFilnam);
 236   fJPsiTree ->Branch("fRecoPass", &fRecoPass, "fRecoPass/S");
 237   fJPsiTree ->Branch("fEvtNum", &fEvtNum, "fEvtNum/L");
 238   if( fType == 0 ) {
 239     fJPsiTree ->Branch("fJPsiESDTracks", &fJPsiESDTracks);
 240   }
 241   if( fType == 1 ) {
 242     fJPsiTree ->Branch("fJPsiAODTracks", &fJPsiAODTracks);
 243   }
 244   if(isMC) {
 245     fJPsiTree ->Branch("fGenPart", &fGenPart);
 246     fJPsiTree ->Branch("fTriggerInputsMC", &fTriggerInputsMC[0], "fTriggerInputsMC[4]/O");
 247   }
 248
 249
 250  //output tree with Psi2s candidate events
 251   fPsi2sTree = new TTree("fPsi2sTree", "fPsi2sTree");
 252   fPsi2sTree ->Branch("fRunNum", &fRunNum, "fRunNum/I");
 253   fPsi2sTree ->Branch("fPerNum", &fPerNum, "fPerNum/i");
 254   fPsi2sTree ->Branch("fOrbNum", &fOrbNum, "fOrbNum/i");
 255
 256   fPsi2sTree ->Branch("fBCrossNum", &fBCrossNum, "fBCrossNum/s");
 257   fPsi2sTree ->Branch("fTrigger", &fTrigger[0], Form("fTrigger[%i]/O", ntrg));
 258   fPsi2sTree ->Branch("fL0inputs", &fL0inputs, "fL0inputs/i");
 259   fPsi2sTree ->Branch("fL1inputs", &fL1inputs, "fL1inputs/i");
 260   fPsi2sTree ->Branch("fNtracklets", &fNtracklets, "fNtracklets/s");
 261   fPsi2sTree ->Branch("fNLooseTracks", &fNLooseTracks, "fNLooseTracks/s");
 262   fPsi2sTree ->Branch("fVtxContrib", &fVtxContrib, "fVtxContrib/I");
 263
 264   fPsi2sTree ->Branch("fTOFtrig1", &fTOFtrig1, "fTOFtrig1/O");
 265   fPsi2sTree ->Branch("fTOFtrig2", &fTOFtrig2, "fTOFtrig2/O");
 266   fPsi2sTree ->Branch("fTOFphi", &fTOFphi[0], "fTOFphi[4]/D");
 267
 268   fPsi2sTree ->Branch("fPIDTPCMuon", &fPIDTPCMuon[0], "fPIDTPCMuon[4]/D");
 269   fPsi2sTree ->Branch("fPIDTPCElectron", &fPIDTPCElectron[0], "fPIDTPCElectron[4]/D");
 270   fPsi2sTree ->Branch("fPIDTPCPion", &fPIDTPCPion[0], "fPIDTPCPion[4]/D");
 271   fPsi2sTree ->Branch("fPIDTPCKaon", &fPIDTPCKaon[0], "fPIDTPCKaon[4]/D");
 272   fPsi2sTree ->Branch("fPIDTPCProton", &fPIDTPCProton[0], "fPIDTPCProton[4]/D");
 273
 274   fPsi2sTree ->Branch("fPIDTOFMuon", &fPIDTOFMuon[0], "fPIDTOFMuon[4]/D");
 275   fPsi2sTree ->Branch("fPIDTOFElectron", &fPIDTOFElectron[0], "fPIDTOFElectron[4]/D");
 276   fPsi2sTree ->Branch("fPIDTOFPion", &fPIDTOFPion[0], "fPIDTOFPion[4]/D");
 277   fPsi2sTree ->Branch("fPIDTOFKaon", &fPIDTOFKaon[0], "fPIDTOFKaon[4]/D");
 278   fPsi2sTree ->Branch("fPIDTOFProton", &fPIDTOFProton[0], "fPIDTOFProton[4]/D");
 279
 280   fPsi2sTree ->Branch("fVtxPos", &fVtxPos[0], "fVtxPos[3]/D");
 281   fPsi2sTree ->Branch("fVtxErr", &fVtxErr[0], "fVtxErr[3]/D");
 282   fPsi2sTree ->Branch("fVtxChi2", &fVtxChi2, "fVtxChi2/D");
 283   fPsi2sTree ->Branch("fVtxNDF", &fVtxNDF, "fVtxNDF/D");
 284
 285   fPsi2sTree ->Branch("fKfVtxPos", &fKfVtxPos[0], "fKfVtxPos[3]/D");
 286   fPsi2sTree ->Branch("fSpdVtxPos", &fSpdVtxPos[0], "fSpdVtxPos[3]/D");
 287
 288   fPsi2sTree ->Branch("fZDCAenergy", &fZDCAenergy, "fZDCAenergy/D");
 289   fPsi2sTree ->Branch("fZDCCenergy", &fZDCCenergy, "fZDCCenergy/D");
 290   fPsi2sTree ->Branch("fV0Adecision", &fV0Adecision, "fV0Adecision/I");
 291   fPsi2sTree ->Branch("fV0Cdecision", &fV0Cdecision, "fV0Cdecision/I");
 292   fPsi2sTree ->Branch("fDataFilnam", &fDataFilnam);
 293   fPsi2sTree ->Branch("fRecoPass", &fRecoPass, "fRecoPass/S");
 294   fPsi2sTree ->Branch("fEvtNum", &fEvtNum, "fEvtNum/L");
 295   if( fType == 0 ) {
 296     fPsi2sTree ->Branch("fPsi2sESDTracks", &fPsi2sESDTracks);
 297   }
 298   if( fType == 1 ) {
 299     fPsi2sTree ->Branch("fPsi2sAODTracks", &fPsi2sAODTracks);
 300   }
 301   if(isMC) {
 302     fPsi2sTree ->Branch("fGenPart", &fGenPart);
 303     fPsi2sTree ->Branch("fTriggerInputsMC", &fTriggerInputsMC[0], "fTriggerInputsMC[4]/O");
 304   }
 305
 306
 307   fListTrig = new TList();
 308   fListTrig ->SetOwner();
 309
 310   fHistCcup4TriggersPerRun = new TH1D("fHistCcup4TriggersPerRun", "fHistCcup4TriggersPerRun", 33000, 167000.5, 200000.5);
 311   fListTrig->Add(fHistCcup4TriggersPerRun);
 312
 313   fHistCcup7TriggersPerRun = new TH1D("fHistCcup7TriggersPerRun", "fHistCcup7TriggersPerRun", 33000, 167000.5, 200000.5);
 314   fListTrig->Add(fHistCcup7TriggersPerRun);
 315
 316   fHistCcup2TriggersPerRun = new TH1D("fHistCcup2TriggersPerRun", "fHistCcup2TriggersPerRun", 33000, 167000.5, 200000.5);
 317   fListTrig->Add(fHistCcup2TriggersPerRun);
 318
 319   fHistCint1TriggersPerRun = new TH1D("fHistCint1TriggersPerRun", "fHistCint1TriggersPerRun", 33000, 167000.5, 200000.5);
 320   fListTrig->Add(fHistCint1TriggersPerRun);
 321
 322   fHistZedTriggersPerRun = new TH1D("fHistZedTriggersPerRun", "fHistZedTriggersPerRun", 33000, 167000.5, 200000.5);
 323   fListTrig->Add(fHistZedTriggersPerRun);
 324
 325   fHistCvlnTriggersPerRun = new TH1D("fHistCvlnTriggersPerRun", "fHistCvlnTriggersPerRun", 33000, 167000.5, 200000.5);
 326   fListTrig->Add(fHistCvlnTriggersPerRun);
 327
 328   fHistMBTriggersPerRun = new TH1D("fHistMBTriggersPerRun", "fHistMBTriggersPerRun", 33000, 167000.5, 200000.5);
 329   fListTrig->Add(fHistMBTriggersPerRun);
 330
 331   fHistCentralTriggersPerRun = new TH1D("fHistCentralTriggersPerRun", "fHistCentralTriggersPerRun", 33000, 167000.5, 200000.5);
 332   fListTrig->Add(fHistCentralTriggersPerRun);
 333
 334   fHistSemiCentralTriggersPerRun = new TH1D("fHistSemiCentralTriggersPerRun", "fHistSemiCentralTriggersPerRun", 33000, 167000.5, 200000.5);
 335   fListTrig->Add(fHistSemiCentralTriggersPerRun);
 336
 337   fListHist = new TList();
 338   fListHist ->SetOwner();
 339
 340   TString CutNameJPsi[13] = {"Analyzed","Triggered","Vertex cut","V0 decision","Neutron ZDC cut","Two good tracks",
 341                                 "Like sign","Oposite sign","One p_{T}>1", "Both p_{T}>1","PID","Dimuom","Dielectron"};
 342   fHistNeventsJPsi = new TH1D("fHistNeventsJPsi","fHistNeventsPsi2s",13,0.5,13.5);
 343   for (Int_t i = 0; i<13; i++) fHistNeventsJPsi->GetXaxis()->SetBinLabel(i+1,CutNameJPsi[i].Data());
 344   fListHist->Add(fHistNeventsJPsi);
 345
 346   fHistTPCsignalJPsi = new TH2D("fHistTPCsignalJPsi","fHistTPCsignalJPsi",240,0,120,240,0,120);
 347   fListHist->Add(fHistTPCsignalJPsi);
 348
 349   fHistDiLeptonPtJPsi = new TH2D("fHistDiLeptonPtJPsi","fHistDiLeptonPtJPsi",350,0,3.5,350,0,3.5);
 350   fListHist->Add(fHistDiLeptonPtJPsi);
 351
 352   fHistDiElectronMass = new TH1D("fHistDiElectronMass","Invariant mass of J/#psi candidates",100,2,5);
 353   fHistDiElectronMass->GetXaxis()->SetTitle("Invariant mass(e^{+}e^{-}) (GeV/c)");
 354   fListHist->Add(fHistDiElectronMass);
 355
 356   fHistDiMuonMass = new TH1D("fHistDiMuonMass","Invariant mass of J/#psi candidates",100,2,5);
 357   fHistDiMuonMass->GetXaxis()->SetTitle("Invariant mass(#mu^{+}#mu^{-}) (GeV/c)");
 358   fListHist->Add(fHistDiMuonMass);
 359
 360   fHistDiLeptonMass = new TH1D("fHistDiLeptonMass","Invariant mass of J/#psi candidates",130,2.1,6.0);
 361   fHistDiLeptonMass->GetXaxis()->SetTitle("Invariant mass(l^{+}l^{-}) (GeV/c)");
 362   fListHist->Add(fHistDiLeptonMass);
 363
 364   TString CutNamePsi2s[14] = {"Analyzed","Triggered","Vertex cut","V0 decision","Neutron ZDC cut","Four good tracks",
 365                                 "DiLepton - DiPion","Like sign leptons","Like sign pions","Like sign both","Oposite sign","PID","Dimuom","Dielectron"};
 366
 367   fHistNeventsPsi2s = new TH1D("fHistNeventsPsi2s","fHistNeventsPsi2s",14,0.5,14.5);
 368   for (Int_t i = 0; i<14; i++) fHistNeventsPsi2s->GetXaxis()->SetBinLabel(i+1,CutNamePsi2s[i].Data());
 369   fListHist->Add(fHistNeventsPsi2s);
 370
 371   fHistPsi2sMassVsPt = new TH2D("fHistPsi2sMassVsPt","Mass vs p_{T} of #psi(2s) candidates",100,3,6,50,0,5);
 372   fHistPsi2sMassVsPt->GetXaxis()->SetTitle("Invariant mass(l^{+}l^{-}#pi^{+}#pi^{-}) (GeV/c)");
 373   fHistPsi2sMassVsPt->GetYaxis()->SetTitle("#it{p}_{T} (GeV/#it{c})");
 374   fListHist->Add(fHistPsi2sMassVsPt);
 375
 376   fHistPsi2sMassCoherent = new TH1D("fHistPsi2sMassAllCoherent","Invariant mass of coherent #psi(2s) candidates",50,2.5,5.5);
 377   fHistPsi2sMassCoherent->GetXaxis()->SetTitle("Invariant mass(l^{+}l^{-}#pi^{+}#pi^{-}) (GeV/c)");
 378   fListHist->Add(fHistPsi2sMassCoherent);
 379
 380   fListSystematics = new TList();
 381   fListSystematics->SetOwner();
 382   fListSystematics->SetName("fListSystematics");
 383   fListHist->Add(fListSystematics);
 384   InitSystematics();
 385
 386
 387   PostData(1, fJPsiTree);
 388   PostData(2, fPsi2sTree);
 389   PostData(3, fListTrig);
 390   PostData(4, fListHist);
 391
 392 }//UserCreateOutputObjects
 393
 394 //_____________________________________________________________________________
 395 void AliAnalysisTaskUpcPsi2s::InitSystematics()
 396 {
 397
 398 fListJPsiLoose = new TList();
 399 fListJPsiLoose->SetOwner();
 400 fListJPsiLoose->SetName("JPsiLoose");
 401 fListSystematics->Add(fListJPsiLoose);
 402
 403 TH1D *fHistJPsiNClusLoose = new TH1D("JPsiNClusLoose","Invariant mass of J/#psi candidates",130,2.1,6.0);
 404 fListJPsiLoose->Add(fHistJPsiNClusLoose);
 405
 406 TH1D *fHistJPsiChi2Loose = new TH1D("JPsiChi2Loose","Invariant mass of J/#psi candidates",130,2.1,6.0);
 407 fListJPsiLoose->Add(fHistJPsiChi2Loose);
 408
 409 TH1D *fHistJPsiDCAzLoose = new TH1D("JPsiDCAzLoose","Invariant mass of J/#psi candidates",130,2.1,6.0);
 410 fListJPsiLoose->Add(fHistJPsiDCAzLoose);
 411
 412 TH1D *fHistJPsiDCAxyLoose = new TH1D("JPsiDCAxyLoose","Invariant mass of J/#psi candidates",130,2.1,6.0);
 413 fListJPsiLoose->Add(fHistJPsiDCAxyLoose);
 414
 415 TH1D *fHistJPsiITShitsLoose = new TH1D("JPsiITShitsLoose","Invariant mass of J/#psi candidates",130,2.1,6.0);
 416 fListJPsiLoose->Add(fHistJPsiITShitsLoose);
 417
 418
 419 fListJPsiTight = new TList();
 420 fListJPsiTight->SetOwner();
 421 fListJPsiTight->SetName("JPsiTight");
 422 fListSystematics->Add(fListJPsiTight);
 423
 424 TH1D *fHistJPsiNClusTight = new TH1D("JPsiNClusTight","Invariant mass of J/#psi candidates",130,2.1,6.0);
 425 fListJPsiTight->Add(fHistJPsiNClusTight);
 426
 427 TH1D *fHistJPsiChi2Tight = new TH1D("JPsiChi2Tight","Invariant mass of J/#psi candidates",130,2.1,6.0);
 428 fListJPsiTight->Add(fHistJPsiChi2Tight);
 429
 430 TH1D *fHistJPsiDCAzTight = new TH1D("JPsiDCAzTight","Invariant mass of J/#psi candidates",130,2.1,6.0);
 431 fListJPsiTight->Add(fHistJPsiDCAzTight);
 432
 433 TH1D *fHistJPsiDCAxyTight = new TH1D("JPsiDCAxyTight","Invariant mass of J/#psi candidates",130,2.1,6.0);
 434 fListJPsiTight->Add(fHistJPsiDCAxyTight);
 435
 436
 437 fListPsi2sLoose = new TList();
 438 fListPsi2sLoose->SetOwner();
 439 fListPsi2sLoose->SetName("Psi2sLoose");
 440 fListSystematics->Add(fListPsi2sLoose);
 441
 442 TH1D *fHistPsi2sNClusLoose = new TH1D("Psi2sNClusLoose","Invariant mass of #psi(2S) candidates",50,2.5,5.5);
 443 fListPsi2sLoose->Add(fHistPsi2sNClusLoose);
 444
 445 TH1D *fHistPsi2sChi2Loose = new TH1D("Psi2sChi2Loose","Invariant mass of #psi(2S) candidates",50,2.5,5.5);
 446 fListPsi2sLoose->Add(fHistPsi2sChi2Loose);
 447
 448 TH1D *fHistPsi2sDCAzLoose = new TH1D("Psi2sDCAzLoose","Invariant mass of #psi(2S) candidates",50,2.5,5.5);
 449 fListPsi2sLoose->Add(fHistPsi2sDCAzLoose);
 450
 451 TH1D *fHistPsi2sDCAxyLoose = new TH1D("Psi2sDCAxyLoose","Invariant mass of #psi(2S) candidates",50,2.5,5.5);
 452 fListPsi2sLoose->Add(fHistPsi2sDCAxyLoose);
 453
 454 TH1D *fHistPsi2sITShitsLoose = new TH1D("Psi2sITShitsLoose","Invariant mass of #psi(2S) candidates",50,2.5,5.5);
 455 fListPsi2sLoose->Add(fHistPsi2sITShitsLoose);
 456
 457
 458 fListPsi2sTight = new TList();
 459 fListPsi2sTight->SetOwner();
 460 fListPsi2sTight->SetName("Psi2sTight");
 461 fListSystematics->Add(fListPsi2sTight);
 462
 463 TH1D *fHistPsi2sNClusTight = new TH1D("Psi2sNClusTight","Invariant mass of #psi(2S) candidates",50,2.5,5.5);
 464 fListPsi2sTight->Add(fHistPsi2sNClusTight);
 465
 466 TH1D *fHistPsi2sChi2Tight = new TH1D("Psi2sChi2Tight","Invariant mass of #psi(2S) candidates",50,2.5,5.5);
 467 fListPsi2sTight->Add(fHistPsi2sChi2Tight);
 468
 469 TH1D *fHistPsi2sDCAzTight = new TH1D("Psi2sDCAzTight","Invariant mass of #psi(2S) candidates",50,2.5,5.5);
 470 fListPsi2sTight->Add(fHistPsi2sDCAzTight);
 471
 472 TH1D *fHistPsi2sDCAxyTight = new TH1D("Psi2sDCAxyTight","Invariant mass of #psi(2S) candidates",50,2.5,5.5);
 473 fListPsi2sTight->Add(fHistPsi2sDCAxyTight);
 474
 475
 476 }
 477
 478 //_____________________________________________________________________________
 479 void AliAnalysisTaskUpcPsi2s::UserExec(Option_t *)
 480 {
 481
 482   //cout<<"#################### Next event ##################"<<endl;
 483
 484   if( fType == 0 ){
 485         RunESDtrig();
 486         if(fRunHist) RunESDhist();
 487         if(fRunTree) RunESDtree();
 488         }
 489
 490   if( fType == 1 ){
 491         RunAODtrig();
 492         if(fRunHist) RunAODhist();
 493         if(fRunTree) RunAODtree();
 494         }
 495
 496 }//UserExec
 497 //_____________________________________________________________________________
 498 void AliAnalysisTaskUpcPsi2s::RunAODtrig()
 499 {
 500
 501   //input event
 502   AliAODEvent *aod = (AliAODEvent*) InputEvent();
 503   if(!aod) return;
 504
 505   fRunNum = aod ->GetRunNumber();
 506   //Trigger
 507   TString trigger = aod->GetFiredTriggerClasses();
 508
 509   if(trigger.Contains("CCUP4-B")) fHistCcup4TriggersPerRun->Fill(fRunNum); //CCUP4 triggers
 510   if(trigger.Contains("CCUP7-B")) fHistCcup7TriggersPerRun->Fill(fRunNum); //CCUP7 triggers
 511   if(trigger.Contains("CCUP2-B")) fHistCcup2TriggersPerRun->Fill(fRunNum); //CCUP2 triggers
 512
 513   if(trigger.Contains("CINT1")) fHistCint1TriggersPerRun->Fill(fRunNum); //CINT1 triggers
 514
 515   if(trigger.Contains("CVLN_B2-B")) fHistCvlnTriggersPerRun->Fill(fRunNum); //CVLN triggers - synchronously downscaled
 516   if(trigger.Contains("CVLN_R1-B")) fHistCvlnTriggersPerRun->Fill(fRunNum); //CVLN triggers - randomly downscaled
 517
 518   fL1inputs = aod->GetHeader()->GetL1TriggerInputs();
 519   if(fL1inputs & (1 << 18)) fHistZedTriggersPerRun->Fill(fRunNum); //1ZED trigger inputs
 520
 521   //MB, Central and SemiCentral triggers
 522   AliCentrality *centrality = aod->GetCentrality();
 523   UInt_t selectionMask = ((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected();
 524
 525   Double_t percentile = centrality->GetCentralityPercentileUnchecked("V0M");
 526   //Double_t percentile = centrality->GetCentralityPercentile("V0M");
 527
 528   if(((selectionMask & AliVEvent::kMB) == AliVEvent::kMB) && percentile<=80 && percentile>=0) fHistMBTriggersPerRun->Fill(fRunNum);
 529
 530   if(((selectionMask & AliVEvent::kCentral) == AliVEvent::kCentral) && percentile<=6 && percentile>=0 && (trigger.Contains("CVHN_R2-B"))) fHistCentralTriggersPerRun->Fill(fRunNum);
 531
 532   if(((selectionMask & AliVEvent::kSemiCentral) == AliVEvent::kSemiCentral) && percentile<=50 && percentile>=15) fHistSemiCentralTriggersPerRun->Fill(fRunNum);
 533
 534 PostData(3, fListTrig);
 535
 536 }
 537 //_____________________________________________________________________________
 538 void AliAnalysisTaskUpcPsi2s::RunAODhist()
 539 {
 540
 541   TDatabasePDG *pdgdat = TDatabasePDG::Instance();
 542
 543   TParticlePDG *partMuon = pdgdat->GetParticle( 13 );
 544   Double_t muonMass = partMuon->Mass();
 545
 546   TParticlePDG *partElectron = pdgdat->GetParticle( 11 );
 547   Double_t electronMass = partElectron->Mass();
 548
 549   TParticlePDG *partPion = pdgdat->GetParticle( 211 );
 550   Double_t pionMass = partPion->Mass();
 551
 552   //input event
 553   AliAODEvent *aod = (AliAODEvent*) InputEvent();
 554   if(!aod) return;
 555
 556  // cout<<"Event number: "<<((TTree*) GetInputData(0))->GetTree()->GetReadEntry()<<endl;
 557
 558   fHistNeventsJPsi->Fill(1);
 559   fHistNeventsPsi2s->Fill(1);
 560
 561   //Trigger
 562   TString trigger = aod->GetFiredTriggerClasses();
 563
 564   if(!isMC && !trigger.Contains("CCUP") ) return;
 565
 566   fHistNeventsJPsi->Fill(2);
 567   fHistNeventsPsi2s->Fill(2);
 568
 569   //primary vertex
 570   AliAODVertex *fAODVertex = aod->GetPrimaryVertex();
 571   fVtxContrib = fAODVertex->GetNContributors();
 572   if(fVtxContrib < 2) return;
 573
 574   fHistNeventsJPsi->Fill(3);
 575   fHistNeventsPsi2s->Fill(3);
 576
 577   //VZERO, ZDC
 578   AliAODVZERO *fV0data = aod ->GetVZEROData();
 579   AliAODZDC *fZDCdata = aod->GetZDCData();
 580
 581   fV0Adecision = fV0data->GetV0ADecision();
 582   fV0Cdecision = fV0data->GetV0CDecision();
 583   if(fV0Adecision != AliAODVZERO::kV0Empty || fV0Cdecision != AliAODVZERO::kV0Empty) return;
 584
 585   fHistNeventsJPsi->Fill(4);
 586   fHistNeventsPsi2s->Fill(4);
 587
 588   fZDCAenergy = fZDCdata->GetZNATowerEnergy()[0];
 589   fZDCCenergy = fZDCdata->GetZNCTowerEnergy()[0];
 590
 591   if( fZDCAenergy > 8200 || fZDCCenergy > 8200) return;
 592
 593   fHistNeventsJPsi->Fill(5);
 594   fHistNeventsPsi2s->Fill(5);
 595
 596   //Systematics - cut variation
 597   if(fRunSystematics) RunAODsystematics(aod);
 598
 599   //Two tracks loop
 600   Int_t nGoodTracks = 0;
 601   Int_t TrackIndex[5] = {-1,-1,-1,-1,-1};
 602
 603   TLorentzVector vLepton[4], vPion[4], vCandidate, vDilepton;
 604   Short_t qLepton[4], qPion[4];
 605   UInt_t nLepton=0, nPion=0, nHighPt=0, nSpdHits=0;
 606   Double_t fRecTPCsignal[5], fRecTPCsignalDist;
 607   Int_t fChannel = 0;
 608   Int_t mass[3]={-1,-1,-1};
 609   Double_t TrackPt[5]={0,0,0,0,0};
 610   Double_t MeanPt = -1;
 611
 612
 613   //Four track loop
 614   for(Int_t itr=0; itr<aod ->GetNumberOfTracks(); itr++) {
 615     AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(itr));
 616     if( !trk ) continue;
 617     if(!(trk->TestFilterBit(1<<0))) continue;
 618
 619       if(!(trk->GetStatus() & AliESDtrack::kTPCrefit) ) continue;
 620       if(!(trk->GetStatus() & AliESDtrack::kITSrefit) ) continue;
 621       if(trk->GetTPCNcls() < 50)continue;
 622       if(trk->Chi2perNDF() > 4)continue;
 623       Double_t dca[2] = {0.0,0.0}, cov[3] = {0.0,0.0,0.0};
 624       AliAODTrack* trk_clone=(AliAODTrack*)trk->Clone("trk_clone");
 625       if(!trk_clone->PropagateToDCA(fAODVertex,aod->GetMagneticField(),300.,dca,cov)) continue;
 626       delete trk_clone;
 627       if(TMath::Abs(dca[1]) > 2) continue;
 628       Double_t cut_DCAxy = 4*(0.0182 + 0.0350/TMath::Power(trk->Pt(),1.01));
 629       if(TMath::Abs(dca[0]) > cut_DCAxy) continue;
 630       if((trk->HasPointOnITSLayer(0))||(trk->HasPointOnITSLayer(1))) nSpdHits++;
 631
 632       TrackIndex[nGoodTracks] = itr;
 633       TrackPt[nGoodTracks] = trk->Pt();
 634       nGoodTracks++;
 635
 636       if(nGoodTracks > 4) break;
 637   }//Track loop
 638
 639   nLepton=0; nPion=0; nHighPt=0;
 640   mass[0]= -1; mass[1]= -1, mass[2]= -1;
 641
 642   if(nGoodTracks == 4 && nSpdHits>1){
 643           MeanPt = GetMedian(TrackPt);
 644           fHistNeventsPsi2s->Fill(6);
 645           for(Int_t i=0; i<4; i++){
 646                 AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(TrackIndex[i]));
 647                 if(!trk) AliFatal("Not a standard AOD");
 648
 649                 if(trk->Pt() > MeanPt){
 650                         fRecTPCsignal[nLepton] = trk->GetTPCsignal();
 651                         qLepton[nLepton] = trk->Charge();
 652                         if(fRecTPCsignal[nLepton] > 40 && fRecTPCsignal[nLepton] < 70){
 653                                         vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), muonMass);
 654                                         mass[nLepton] = 0;
 655                                         }
 656                         if(fRecTPCsignal[nLepton] > 70 && fRecTPCsignal[nLepton] < 100){
 657                                         vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), electronMass);
 658                                         mass[nLepton] = 1;
 659                                         }
 660                         nLepton++;
 661                         }
 662                 else{
 663                         qPion[nPion] = trk->Charge();
 664                         vPion[nPion].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), pionMass);
 665                         nPion++;
 666                         }
 667
 668                 if(nLepton > 2 || nPion > 2) break;
 669                 }
 670         if((nLepton == 2) && (nPion == 2)){
 671                 fHistNeventsPsi2s->Fill(7);
 672                 if(qLepton[0]*qLepton[1] > 0) fHistNeventsPsi2s->Fill(8);
 673                 if(qPion[0]*qPion[1] > 0) fHistNeventsPsi2s->Fill(9);
 674                 if((qLepton[0]*qLepton[1] > 0) && (qPion[0]*qPion[1] > 0)) fHistNeventsPsi2s->Fill(10);
 675                 if((qLepton[0]*qLepton[1] < 0) && (qPion[0]*qPion[1] < 0)){
 676                         fHistNeventsPsi2s->Fill(11);
 677                         if(mass[0] != -1 && mass[1] != -1) {
 678                                 fHistNeventsPsi2s->Fill(12);
 679                                 vCandidate = vLepton[0]+vLepton[1]+vPion[0]+vPion[1];
 680                                 vDilepton = vLepton[0]+vLepton[1];
 681                                 fHistPsi2sMassVsPt->Fill(vCandidate.M(),vCandidate.Pt());
 682                                 fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-56,2)+TMath::Power(fRecTPCsignal[1]-56,2));
 683                                 if (fRecTPCsignalDist < 3.6*4.0) fChannel = -1;
 684                                 else {
 685                                         fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-78,2)+TMath::Power(fRecTPCsignal[1]-78,2));
 686                                         if (fRecTPCsignalDist < 4.1*4.0) fChannel = 1;
 687                                         }
 688
 689                                 if(fChannel == -1) {
 690                                         fHistNeventsPsi2s->Fill(13);
 691                                         if(vDilepton.M() > 3.0 && vDilepton.M() < 3.2 && vCandidate.Pt()<0.15) fHistPsi2sMassCoherent->Fill(vCandidate.M());
 692                                         }
 693                                 if(fChannel == 1){
 694                                         fHistNeventsPsi2s->Fill(14);
 695                                         if(vDilepton.M() > 2.6 && vDilepton.M() < 3.2 && vCandidate.Pt()<0.3) fHistPsi2sMassCoherent->Fill(vCandidate.M());
 696                                         }
 697                                 }
 698                         }
 699                 }
 700   }
 701
 702   nGoodTracks = 0;
 703   //Two track loop
 704   for(Int_t itr=0; itr<aod ->GetNumberOfTracks(); itr++) {
 705     AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(itr));
 706     if( !trk ) continue;
 707     if(!(trk->TestFilterBit(1<<0))) continue;
 708
 709       if(!(trk->GetStatus() & AliESDtrack::kTPCrefit) ) continue;
 710       if(!(trk->GetStatus() & AliESDtrack::kITSrefit) ) continue;
 711       if(trk->GetTPCNcls() < 70)continue;
 712       if(trk->Chi2perNDF() > 4)continue;
 713       if((!trk->HasPointOnITSLayer(0))&&(!trk->HasPointOnITSLayer(1))) continue;
 714       Double_t dca[2] = {0.0,0.0}, cov[3] = {0.0,0.0,0.0};
 715       AliAODTrack* trk_clone=(AliAODTrack*)trk->Clone("trk_clone");
 716       if(!trk_clone->PropagateToDCA(fAODVertex,aod->GetMagneticField(),300.,dca,cov)) continue;
 717       delete trk_clone;
 718       if(TMath::Abs(dca[1]) > 2) continue;
 719       Double_t cut_DCAxy = (0.0182 + 0.0350/TMath::Power(trk->Pt(),1.01));
 720       if(TMath::Abs(dca[0]) > cut_DCAxy) continue;
 721
 722       TrackIndex[nGoodTracks] = itr;
 723       nGoodTracks++;
 724
 725       if(nGoodTracks > 2) break;
 726   }//Track loop
 727
 728    nLepton=0; nPion=0; nHighPt=0;
 729   mass[0]= -1; mass[1]= -1, mass[2]= -1;
 730
 731   if(nGoodTracks == 2){
 732           fHistNeventsJPsi->Fill(6);
 733           for(Int_t i=0; i<2; i++){
 734                 AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(TrackIndex[i]));
 735                 if(!trk) AliFatal("Not a standard AOD");
 736                 if(trk->Pt() > 1) nHighPt++;
 737                 fRecTPCsignal[nLepton] = trk->GetTPCsignal();
 738                 qLepton[nLepton] = trk->Charge();
 739                 if(fRecTPCsignal[nLepton] > 40 && fRecTPCsignal[nLepton] < 70){
 740                                 vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), muonMass);
 741                                 mass[nLepton] = 0;
 742                                 }
 743                 if(fRecTPCsignal[nLepton] > 70 && fRecTPCsignal[nLepton] < 100){
 744                                 vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), electronMass);
 745                                 mass[nLepton] = 1;
 746                                 }
 747                 nLepton++;
 748                 }
 749         if(nLepton == 2){
 750                 if(qLepton[0]*qLepton[1] > 0) fHistNeventsJPsi->Fill(7);
 751                 if(qLepton[0]*qLepton[1] < 0){
 752                         fHistNeventsJPsi->Fill(8);
 753                         if(nHighPt > 0){
 754                                 fHistNeventsJPsi->Fill(9);
 755                                 fHistTPCsignalJPsi->Fill(fRecTPCsignal[0],fRecTPCsignal[1]);
 756                                 if(nHighPt == 2) fHistNeventsJPsi->Fill(10);
 757                                 if(mass[0] != -1 && mass[1] != -1) {
 758                                         fHistNeventsJPsi->Fill(11);
 759                                         vCandidate = vLepton[0]+vLepton[1];
 760                                         fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-56,2)+TMath::Power(fRecTPCsignal[1]-56,2));
 761                                         if (fRecTPCsignalDist < 3.6*4.0) fChannel = -1;
 762                                         else {
 763                                                 fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-78,2)+TMath::Power(fRecTPCsignal[1]-78,2));
 764                                                 if (fRecTPCsignalDist < 4.1*4.0) fChannel = 1;
 765                                                 }
 766                                         if( vCandidate.M() > 2.8 && vCandidate.M() < 3.2) fHistDiLeptonPtJPsi->Fill(vLepton[0].Pt(),vLepton[1].Pt());
 767                                         if(fChannel == -1) {
 768                                                 fHistDiMuonMass->Fill(vCandidate.M());
 769                                                 if(vCandidate.Pt()<0.15)fHistDiLeptonMass->Fill(vCandidate.M());
 770                                                 fHistNeventsJPsi->Fill(12);
 771                                                 }
 772                                         if(fChannel == 1) {
 773                                                 fHistDiElectronMass->Fill(vCandidate.M());
 774                                                 if(vCandidate.Pt()<0.3)fHistDiLeptonMass->Fill(vCandidate.M());
 775                                                 fHistNeventsJPsi->Fill(13);
 776                                                 }
 777                                         }
 778                                 }
 779                         }
 780                 }
 781   }
 782
 783
 784   PostData(4, fListHist);
 785
 786 }
 787
 788 //_____________________________________________________________________________
 789 void AliAnalysisTaskUpcPsi2s::RunAODtree()
 790 {
 791   //input event
 792   AliAODEvent *aod = (AliAODEvent*) InputEvent();
 793   if(!aod) return;
 794
 795   if(isMC) RunAODMC(aod);
 796
 797   //input data
 798   const char *filnam = ((TTree*) GetInputData(0))->GetCurrentFile()->GetName();
 799   fDataFilnam->Clear();
 800   fDataFilnam->SetString(filnam);
 801   fEvtNum = ((TTree*) GetInputData(0))->GetTree()->GetReadEntry();
 802   fRunNum = aod ->GetRunNumber();
 803
 804   //Trigger
 805   TString trigger = aod->GetFiredTriggerClasses();
 806
 807   fTrigger[0]  = trigger.Contains("CCUP4-B"); // Central UPC Pb-Pb 2011
 808   fTrigger[1]  = trigger.Contains("CCUP2-B"); // Double gap
 809   fTrigger[2]  = trigger.Contains("CCUP7-B"); // Central UPC p-Pb 2013
 810   fTrigger[3]  = trigger.Contains("CINT1");
 811
 812   Bool_t isTriggered = kFALSE;
 813   for(Int_t i=0; i<ntrg; i++) {
 814     if( fTrigger[i] ) isTriggered = kTRUE;
 815   }
 816   if(!isMC && !isTriggered ) return;
 817
 818   //trigger inputs
 819   fL0inputs = aod->GetHeader()->GetL0TriggerInputs();
 820   fL1inputs = aod->GetHeader()->GetL1TriggerInputs();
 821
 822   //Event identification
 823   fPerNum = aod ->GetPeriodNumber();
 824   fOrbNum = aod ->GetOrbitNumber();
 825   fBCrossNum = aod ->GetBunchCrossNumber();
 826
 827   //primary vertex
 828   AliAODVertex *fAODVertex = aod->GetPrimaryVertex();
 829   fVtxContrib = fAODVertex->GetNContributors();
 830   fVtxPos[0] = fAODVertex->GetX();
 831   fVtxPos[1] = fAODVertex->GetY();
 832   fVtxPos[2] = fAODVertex->GetZ();
 833   Double_t CovMatx[6];
 834   fAODVertex->GetCovarianceMatrix(CovMatx);
 835   fVtxErr[0] = CovMatx[0];
 836   fVtxErr[1] = CovMatx[1];
 837   fVtxErr[2] = CovMatx[2];
 838   fVtxChi2 = fAODVertex->GetChi2();
 839   fVtxNDF = fAODVertex->GetNDF();
 840
 841   //SPD primary vertex
 842   AliAODVertex *fSPDVertex = aod->GetPrimaryVertexSPD();
 843   if(fSPDVertex){
 844         fSpdVtxPos[0] = fSPDVertex->GetX();
 845         fSpdVtxPos[1] = fSPDVertex->GetY();
 846         fSpdVtxPos[2] = fSPDVertex->GetZ();
 847         }
 848   else{
 849         fSpdVtxPos[0] = -666;
 850         fSpdVtxPos[1] = -666;
 851         fSpdVtxPos[2] = -666;
 852         }
 853
 854   //Tracklets
 855   fNtracklets = aod->GetTracklets()->GetNumberOfTracklets();
 856
 857   //VZERO, ZDC
 858   AliAODVZERO *fV0data = aod ->GetVZEROData();
 859   AliAODZDC *fZDCdata = aod->GetZDCData();
 860
 861   fV0Adecision = fV0data->GetV0ADecision();
 862   fV0Cdecision = fV0data->GetV0CDecision();
 863   fZDCAenergy = fZDCdata->GetZNATowerEnergy()[0];
 864   fZDCCenergy = fZDCdata->GetZNCTowerEnergy()[0];
 865
 866   fNLooseTracks = 0;
 867
 868   //Track loop - loose cuts
 869   for(Int_t itr=0; itr<aod ->GetNumberOfTracks(); itr++) {
 870     AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(itr));
 871     if( !trk ) continue;
 872     if(!(trk->TestFilterBit(1<<0))) continue;
 873
 874       if(!(trk->GetStatus() & AliAODTrack::kTPCrefit) ) continue;
 875       if(!(trk->GetStatus() & AliAODTrack::kITSrefit) ) continue;
 876       if(trk->GetTPCNcls() < 20)continue;
 877       fNLooseTracks++;
 878   }//Track loop -loose cuts
 879
 880   Int_t nGoodTracks=0;
 881   Int_t TrackIndex[5] = {-1,-1,-1,-1,-1};
 882
 883   //Two track loop
 884   for(Int_t itr=0; itr<aod ->GetNumberOfTracks(); itr++) {
 885     AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(itr));
 886     if( !trk ) continue;
 887     if(!(trk->TestFilterBit(1<<0))) continue;
 888
 889       if(!(trk->GetStatus() & AliAODTrack::kTPCrefit) ) continue;
 890       if(!(trk->GetStatus() & AliAODTrack::kITSrefit) ) continue;
 891       if(trk->GetTPCNcls() < 70)continue;
 892       if(trk->Chi2perNDF() > 4)continue;
 893       if((!trk->HasPointOnITSLayer(0))&&(!trk->HasPointOnITSLayer(1))) continue;
 894       Double_t dca[2] = {0.0,0.0}, cov[3] = {0.0,0.0,0.0};
 895       AliAODTrack* trk_clone=(AliAODTrack*)trk->Clone("trk_clone");
 896       if(!trk_clone->PropagateToDCA(fAODVertex,aod->GetMagneticField(),300.,dca,cov)) continue;
 897       delete trk_clone;
 898       if(TMath::Abs(dca[1]) > 2) continue;
 899       Double_t cut_DCAxy = (0.0182 + 0.0350/TMath::Power(trk->Pt(),1.01));
 900       if(TMath::Abs(dca[0]) > cut_DCAxy) continue;
 901
 902
 903       TrackIndex[nGoodTracks] = itr;
 904       nGoodTracks++;
 905
 906       if(nGoodTracks > 2) break;
 907   }//Track loop
 908
 909   fJPsiAODTracks->Clear("C");
 910   if(nGoodTracks == 2){
 911
 912           TDatabasePDG *pdgdat = TDatabasePDG::Instance();
 913           TParticlePDG *partMuon = pdgdat->GetParticle( 13 );
 914           Double_t muonMass = partMuon->Mass();
 915           TParticlePDG *partElectron = pdgdat->GetParticle( 11 );
 916           Double_t electronMass = partElectron->Mass();
 917           TParticlePDG *partPion = pdgdat->GetParticle( 211 );
 918           Double_t pionMass = partPion->Mass();
 919
 920           Double_t KFcov[21];
 921           Double_t KFpar[6];
 922           Double_t KFmass = pionMass;
 923           Double_t fRecTPCsignal;
 924           AliKFParticle *KFpart[2];
 925           AliKFVertex *KFvtx = new AliKFVertex();
 926           KFvtx->SetField(aod->GetMagneticField());
 927
 928           for(Int_t i=0; i<2; i++){
 929                 AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(TrackIndex[i]));
 930                 if(!trk) AliFatal("Not a standard AOD");
 931
 932                 Double_t dca[2] = {0.0,0.0}, cov[3] = {0.0,0.0,0.0};
 933                 AliAODTrack* trk_clone=(AliAODTrack*)trk->Clone("trk_clone");
 934                 if(!trk_clone->PropagateToDCA(fAODVertex,aod->GetMagneticField(),300.,dca,cov)) continue;
 935                 delete trk_clone;
 936
 937                 new((*fJPsiAODTracks)[i]) AliAODTrack(*trk);
 938                 ((AliAODTrack*)((*fJPsiAODTracks)[i]))->SetDCA(dca[0],dca[1]);//to get DCAxy trk->DCA(); to get DCAz trk->ZAtDCA();
 939
 940                 fPIDTPCMuon[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kMuon);
 941                 fPIDTPCElectron[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kElectron);
 942                 fPIDTPCPion[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kPion);
 943                 fPIDTPCKaon[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kKaon);
 944                 fPIDTPCProton[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kProton);
 945
 946                 fPIDTOFMuon[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kMuon);
 947                 fPIDTOFElectron[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kElectron);
 948                 fPIDTOFPion[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kPion);
 949                 fPIDTOFKaon[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kKaon);
 950                 fPIDTOFProton[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kProton);
 951
 952                 trk->GetPosition(KFpar);
 953                 trk->PxPyPz(KFpar+3);
 954                 trk->GetCovMatrix(KFcov);
 955
 956                 if(trk->Pt() > 1){
 957                         fRecTPCsignal = trk->GetTPCsignal();
 958                         if(fRecTPCsignal > 40 && fRecTPCsignal < 70) KFmass = muonMass;
 959                         if(fRecTPCsignal > 70 && fRecTPCsignal < 100)KFmass = electronMass;
 960                         }
 961                 else KFmass = pionMass;
 962
 963                 KFpart[i] = new AliKFParticle();
 964                 KFpart[i]->SetField(aod->GetMagneticField());
 965                 KFpart[i]->AliKFParticleBase::Initialize(KFpar,KFcov,(Int_t) trk->Charge(), KFmass);
 966                 KFvtx->AddDaughter(*KFpart[i]);
 967
 968
 969                 Double_t pos[3]={0,0,0};
 970                 AliExternalTrackParam *parTrk = new AliExternalTrackParam();
 971                 parTrk->CopyFromVTrack((AliVTrack*) trk);
 972                 if(!parTrk->GetXYZAt(378,aod->GetMagneticField(),pos)) fTOFphi[i] = -666;
 973                 else {
 974                      fTOFphi[i] =  TMath::ATan2(pos[1],pos[0])*TMath::RadToDeg();
 975                      if(fTOFphi[i] < 0) fTOFphi[i]+=(2*TMath::Pi()*TMath::RadToDeg());
 976                      }
 977                 delete parTrk;
 978                 }
 979   fKfVtxPos[0]= KFvtx->GetX();
 980   fKfVtxPos[1]= KFvtx->GetY();
 981   fKfVtxPos[2]= KFvtx->GetZ();
 982   for(UInt_t i=0; i<2; i++)delete KFpart[i];
 983   delete KFvtx;
 984
 985   if(!isMC) fJPsiTree ->Fill();
 986   }
 987
 988    nGoodTracks = 0;
 989    //Four track loop
 990   for(Int_t itr=0; itr<aod ->GetNumberOfTracks(); itr++) {
 991     AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(itr));
 992     if( !trk ) continue;
 993     if(!(trk->TestFilterBit(1<<0))) continue;
 994
 995       if(!(trk->GetStatus() & AliAODTrack::kTPCrefit) ) continue;
 996       if(!(trk->GetStatus() & AliAODTrack::kITSrefit) ) continue;
 997       if(trk->GetTPCNcls() < 50)continue;
 998       if(trk->Chi2perNDF() > 4)continue;
 999       Double_t dca[2] = {0.0,0.0}, cov[3] = {0.0,0.0,0.0};
1000       AliAODTrack* trk_clone=(AliAODTrack*)trk->Clone("trk_clone");
1001       if(!trk_clone->PropagateToDCA(fAODVertex,aod->GetMagneticField(),300.,dca,cov)) continue;
1002       delete trk_clone;
1003       if(TMath::Abs(dca[1]) > 2) continue;
1004       Double_t cut_DCAxy = 4*(0.0182 + 0.0350/TMath::Power(trk->Pt(),1.01));
1005       if(TMath::Abs(dca[0]) > cut_DCAxy) continue;
1006
1007       TrackIndex[nGoodTracks] = itr;
1008       nGoodTracks++;
1009
1010       if(nGoodTracks > 4) break;
1011   }//Track loop
1012
1013   fPsi2sAODTracks->Clear("C");
1014   if(nGoodTracks == 4){
1015
1016           TDatabasePDG *pdgdat = TDatabasePDG::Instance();
1017           TParticlePDG *partMuon = pdgdat->GetParticle( 13 );
1018           Double_t muonMass = partMuon->Mass();
1019           TParticlePDG *partElectron = pdgdat->GetParticle( 11 );
1020           Double_t electronMass = partElectron->Mass();
1021           TParticlePDG *partPion = pdgdat->GetParticle( 211 );
1022           Double_t pionMass = partPion->Mass();
1023
1024           Double_t KFcov[21];
1025           Double_t KFpar[6];
1026           Double_t KFmass = pionMass;
1027           Double_t fRecTPCsignal;
1028           AliKFParticle *KFpart[4];
1029           AliKFVertex *KFvtx = new AliKFVertex();
1030           KFvtx->SetField(aod->GetMagneticField());
1031
1032           for(Int_t i=0; i<4; i++){
1033                 AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(TrackIndex[i]));
1034                 if(!trk) AliFatal("Not a standard AOD");
1035
1036                 Double_t dca[2] = {0.0,0.0}, cov[3] = {0.0,0.0,0.0};
1037                 AliAODTrack* trk_clone=(AliAODTrack*)trk->Clone("trk_clone");
1038                 if(!trk_clone->PropagateToDCA(fAODVertex,aod->GetMagneticField(),300.,dca,cov)) continue;
1039                 delete trk_clone;
1040
1041                 new((*fPsi2sAODTracks)[i]) AliAODTrack(*trk);
1042                 ((AliAODTrack*)((*fPsi2sAODTracks)[i]))->SetDCA(dca[0],dca[1]);//to get DCAxy trk->DCA(); to get DCAz trk->ZAtDCA();
1043
1044
1045                 fPIDTPCMuon[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kMuon);
1046                 fPIDTPCElectron[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kElectron);
1047                 fPIDTPCPion[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kPion);
1048                 fPIDTPCKaon[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kKaon);
1049                 fPIDTPCProton[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kProton);
1050
1051                 fPIDTOFMuon[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kMuon);
1052                 fPIDTOFElectron[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kElectron);
1053                 fPIDTOFPion[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kPion);
1054                 fPIDTOFKaon[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kKaon);
1055                 fPIDTOFProton[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kProton);
1056
1057                 trk->GetPosition(KFpar);
1058                 trk->PxPyPz(KFpar+3);
1059                 trk->GetCovMatrix(KFcov);
1060
1061                 if(trk->Pt() > 1){
1062                         fRecTPCsignal = trk->GetTPCsignal();
1063                         if(fRecTPCsignal > 40 && fRecTPCsignal < 70) KFmass = muonMass;
1064                         if(fRecTPCsignal > 70 && fRecTPCsignal < 100)KFmass = electronMass;
1065                         }
1066                 else KFmass = pionMass;
1067
1068                 KFpart[i] = new AliKFParticle();
1069                 KFpart[i]->SetField(aod->GetMagneticField());
1070                 KFpart[i]->AliKFParticleBase::Initialize(KFpar,KFcov,(Int_t) trk->Charge(), KFmass);
1071                 KFvtx->AddDaughter(*KFpart[i]);
1072
1073                 Double_t pos[3]={0,0,0};
1074                 AliExternalTrackParam *parTrk = new AliExternalTrackParam();
1075                 parTrk->CopyFromVTrack((AliVTrack*) trk);
1076                 if(!parTrk->GetXYZAt(378,aod->GetMagneticField(),pos)) fTOFphi[i] = -666;
1077                 else {
1078                      fTOFphi[i] =  TMath::ATan2(pos[1],pos[0])*TMath::RadToDeg();
1079                      if(fTOFphi[i] < 0) fTOFphi[i]+=(2*TMath::Pi()*TMath::RadToDeg());
1080                      }
1081                 delete parTrk;
1082                 }
1083   fKfVtxPos[0]= KFvtx->GetX();
1084   fKfVtxPos[1]= KFvtx->GetY();
1085   fKfVtxPos[2]= KFvtx->GetZ();
1086   for(UInt_t i=0; i<4; i++)delete KFpart[i];
1087   delete KFvtx;
1088   if(!isMC) fPsi2sTree ->Fill();
1089   }
1090
1091   if(isMC){
1092         fJPsiTree ->Fill();
1093         fPsi2sTree ->Fill();
1094   }
1095
1096   PostData(1, fJPsiTree);
1097   PostData(2, fPsi2sTree);
1098
1099 }//RunAOD
1100
1101
1102 //_____________________________________________________________________________
1103 void AliAnalysisTaskUpcPsi2s::RunAODMC(AliAODEvent *aod)
1104 {
1105
1106   fL0inputs = aod->GetHeader()->GetL0TriggerInputs();
1107   fTriggerInputsMC[0] = kFALSE;//0SM2
1108   fTriggerInputsMC[1] = fL0inputs & (1 << 0);//0VBA
1109   fTriggerInputsMC[2] = fL0inputs & (1 << 1);//0VBC
1110   fTriggerInputsMC[3] = fL0inputs & (1 << 9);//0OMU
1111
1112   fGenPart->Clear("C");
1113
1114   TClonesArray *arrayMC = (TClonesArray*) aod->GetList()->FindObject(AliAODMCParticle::StdBranchName());
1115   if(!arrayMC) return;
1116
1117   Int_t nmc=0;
1118   //loop over mc particles
1119   for(Int_t imc=0; imc<arrayMC->GetEntriesFast(); imc++) {
1120     AliAODMCParticle *mcPart = (AliAODMCParticle*) arrayMC->At(imc);
1121     if(!mcPart) continue;
1122
1123     if(mcPart->GetMother() >= 0) continue;
1124
1125     TParticle *part = (TParticle*) fGenPart->ConstructedAt(nmc++);
1126     part->SetMomentum(mcPart->Px(), mcPart->Py(), mcPart->Pz(), mcPart->E());
1127     part->SetPdgCode(mcPart->GetPdgCode());
1128     part->SetUniqueID(imc);
1129   }//loop over mc particles
1130
1131 }//RunAODMC
1132
1133
1134 //_____________________________________________________________________________
1135 void AliAnalysisTaskUpcPsi2s::RunESDtrig()
1136 {
1137
1138   //input event
1139   AliESDEvent *esd = (AliESDEvent*) InputEvent();
1140   if(!esd) return;
1141
1142   fRunNum = esd ->GetRunNumber();
1143   //Trigger
1144   TString trigger = esd->GetFiredTriggerClasses();
1145
1146   if(trigger.Contains("CCUP4-B")) fHistCcup4TriggersPerRun->Fill(fRunNum); //CCUP4 triggers
1147   if(trigger.Contains("CCUP7-B")) fHistCcup7TriggersPerRun->Fill(fRunNum); //CCUP7 triggers
1148   if(trigger.Contains("CCUP2-B")) fHistCcup2TriggersPerRun->Fill(fRunNum); //CCUP2 triggers
1149
1150   if(trigger.Contains("CVLN_B2-B")) fHistCvlnTriggersPerRun->Fill(fRunNum); //CVLN triggers - synchronously downscaled
1151   if(trigger.Contains("CVLN_R1-B")) fHistCvlnTriggersPerRun->Fill(fRunNum); //CVLN triggers - randomly downscaled
1152
1153   if(esd->GetHeader()->IsTriggerInputFired("1ZED")) fHistZedTriggersPerRun->Fill(fRunNum); //1ZED trigger inputs
1154
1155    //MB, Central and SemiCentral triggers
1156   AliCentrality *centrality = esd->GetCentrality();
1157   UInt_t selectionMask = ((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected();
1158
1159   //Double_t percentile = centrality->GetCentralityPercentile("V0M");
1160   Double_t percentile = centrality->GetCentralityPercentileUnchecked("V0M");
1161
1162   if(((selectionMask & AliVEvent::kMB) == AliVEvent::kMB) && percentile<=80 && percentile>=0) fHistMBTriggersPerRun->Fill(fRunNum);
1163
1164   if(((selectionMask & AliVEvent::kCentral) == AliVEvent::kCentral) && percentile<=6 && percentile>=0 && (trigger.Contains("CVHN_R2-B"))) fHistCentralTriggersPerRun->Fill(fRunNum);
1165
1166   if(((selectionMask & AliVEvent::kSemiCentral) == AliVEvent::kSemiCentral) && percentile<=50 && percentile>=15) fHistSemiCentralTriggersPerRun->Fill(fRunNum);
1167
1168
1169 PostData(3, fListTrig);
1170
1171 }
1172 //_____________________________________________________________________________
1173 void AliAnalysisTaskUpcPsi2s::RunESDhist()
1174 {
1175
1176   TDatabasePDG *pdgdat = TDatabasePDG::Instance();
1177
1178   TParticlePDG *partMuon = pdgdat->GetParticle( 13 );
1179   Double_t muonMass = partMuon->Mass();
1180
1181   TParticlePDG *partElectron = pdgdat->GetParticle( 11 );
1182   Double_t electronMass = partElectron->Mass();
1183
1184   TParticlePDG *partPion = pdgdat->GetParticle( 211 );
1185   Double_t pionMass = partPion->Mass();
1186
1187   //input event
1188   AliESDEvent *esd = (AliESDEvent*) InputEvent();
1189   if(!esd) return;
1190
1191   fHistNeventsJPsi->Fill(1);
1192   fHistNeventsPsi2s->Fill(1);
1193
1194   //Trigger
1195   TString trigger = esd->GetFiredTriggerClasses();
1196
1197   if(!isMC && !trigger.Contains("CCUP") ) return;
1198
1199   fHistNeventsJPsi->Fill(2);
1200   fHistNeventsPsi2s->Fill(2);
1201
1202   //primary vertex
1203   AliESDVertex *fESDVertex = (AliESDVertex*) esd->GetPrimaryVertex();
1204   fVtxContrib = fESDVertex->GetNContributors();
1205   if(fVtxContrib < 2) return;
1206
1207   fHistNeventsJPsi->Fill(3);
1208   fHistNeventsPsi2s->Fill(3);
1209
1210   //VZERO, ZDC
1211   AliESDVZERO *fV0data = esd->GetVZEROData();
1212   AliESDZDC *fZDCdata = esd->GetESDZDC();
1213
1214   fV0Adecision = fV0data->GetV0ADecision();
1215   fV0Cdecision = fV0data->GetV0CDecision();
1216   if(fV0Adecision != AliESDVZERO::kV0Empty || fV0Cdecision != AliESDVZERO::kV0Empty) return;
1217
1218   fZDCAenergy = fZDCdata->GetZN2TowerEnergy()[0];
1219   fZDCCenergy = fZDCdata->GetZN1TowerEnergy()[0];
1220   if( fZDCAenergy > 8200 || fZDCCenergy > 8200) return;
1221
1222   fHistNeventsJPsi->Fill(4);
1223   fHistNeventsPsi2s->Fill(4);
1224
1225    Int_t nGoodTracks=0;
1226   //Two tracks loop
1227   Int_t TrackIndex[5] = {-1,-1,-1,-1,-1};
1228
1229   TLorentzVector vLepton[4], vPion[4], vCandidate, vDilepton;
1230   Short_t qLepton[4], qPion[4];
1231   UInt_t nLepton=0, nPion=0, nHighPt=0;
1232   Double_t fRecTPCsignal[5];
1233   Int_t mass[3]={-1,-1,-1};
1234
1235  //Two Track loop
1236   for(Int_t itr=0; itr<esd ->GetNumberOfTracks(); itr++) {
1237     AliESDtrack *trk = esd->GetTrack(itr);
1238     if( !trk ) continue;
1239
1240       if(!(trk->GetStatus() & AliESDtrack::kTPCrefit) ) continue;
1241       if(!(trk->GetStatus() & AliESDtrack::kITSrefit) ) continue;
1242       if(trk->GetTPCNcls() < 70)continue;
1243       if(trk->GetTPCchi2()/trk->GetTPCNcls() > 4)continue;
1244       if((!trk->HasPointOnITSLayer(0))&&(!trk->HasPointOnITSLayer(1))) continue;
1245       Float_t dca[2] = {0.0,0.0}; AliExternalTrackParam cParam;
1246       if(!trk->RelateToVertex(fESDVertex, esd->GetMagneticField(),300.,&cParam)) continue;
1247       trk->GetImpactParameters(dca[0],dca[1]);
1248       if(TMath::Abs(dca[1]) > 2) continue;
1249       if(TMath::Abs(dca[1]) > 0.2) continue;
1250
1251       TrackIndex[nGoodTracks] = itr;
1252       nGoodTracks++;
1253       if(nGoodTracks > 2) break;
1254   }//Track loop
1255
1256
1257   if(nGoodTracks == 2){
1258           fHistNeventsJPsi->Fill(5);
1259           for(Int_t i=0; i<2; i++){
1260                 AliESDtrack *trk = esd->GetTrack(TrackIndex[i]);
1261                 if(trk->Pt() > 1) nHighPt++;
1262                 fRecTPCsignal[nLepton] = trk->GetTPCsignal();
1263                 qLepton[nLepton] = trk->Charge();
1264                 if(fRecTPCsignal[nLepton] > 40 && fRecTPCsignal[nLepton] < 70){
1265                                 vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), muonMass);
1266                                 mass[nLepton] = 0;
1267                                 }
1268                 if(fRecTPCsignal[nLepton] > 70 && fRecTPCsignal[nLepton] < 100){
1269                                 vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), electronMass);
1270                                 mass[nLepton] = 1;
1271                                 }
1272                 nLepton++;
1273                 }
1274         if(nLepton == 2){
1275                 if(qLepton[0]*qLepton[1] > 0) fHistNeventsJPsi->Fill(6);
1276                 if(qLepton[0]*qLepton[1] < 0){
1277                         fHistNeventsJPsi->Fill(7);
1278                         if(nHighPt > 0){
1279                                 fHistNeventsJPsi->Fill(8);
1280                                 fHistTPCsignalJPsi->Fill(fRecTPCsignal[0],fRecTPCsignal[1]);
1281                                 if(nHighPt == 2) fHistNeventsJPsi->Fill(9);
1282                                 if(mass[0] == mass[1] && mass[0] != -1) {
1283                                         fHistNeventsJPsi->Fill(10);
1284                                         vCandidate = vLepton[0]+vLepton[1];
1285                                         if( vCandidate.M() > 2.8 && vCandidate.M() < 3.2) fHistDiLeptonPtJPsi->Fill(vLepton[0].Pt(),vLepton[1].Pt());
1286                                         if(mass[0] == 0) {
1287                                                 fHistDiMuonMass->Fill(vCandidate.M());
1288                                                 fHistNeventsJPsi->Fill(11);
1289                                                 }
1290                                         if(mass[0] == 1) {
1291                                                 fHistDiElectronMass->Fill(vCandidate.M());
1292                                                 fHistNeventsJPsi->Fill(12);
1293                                                 }
1294                                         }
1295                                 }
1296                         }
1297                 }
1298   }
1299   nGoodTracks = 0; nLepton=0; nPion=0; nHighPt=0;
1300   mass[0]= -1; mass[1]= -1, mass[2]= -1;
1301
1302     //Four Track loop
1303   for(Int_t itr=0; itr<esd ->GetNumberOfTracks(); itr++) {
1304     AliESDtrack *trk = esd->GetTrack(itr);
1305     if( !trk ) continue;
1306
1307       if(!(trk->GetStatus() & AliESDtrack::kTPCrefit) ) continue;
1308       if(!(trk->GetStatus() & AliESDtrack::kITSrefit) ) continue;
1309       if(trk->GetTPCNcls() < 50)continue;
1310       if(trk->GetTPCchi2()/trk->GetTPCNcls() > 4)continue;
1311       Float_t dca[2] = {0.0,0.0}; AliExternalTrackParam cParam;
1312       if(!trk->RelateToVertex(fESDVertex, esd->GetMagneticField(),300.,&cParam)) continue;
1313       trk->GetImpactParameters(dca[0],dca[1]);
1314       if(TMath::Abs(dca[1]) > 2) continue;
1315
1316       TrackIndex[nGoodTracks] = itr;
1317       nGoodTracks++;
1318       if(nGoodTracks > 4) break;
1319   }//Track loop
1320
1321   if(nGoodTracks == 4){
1322           fHistNeventsPsi2s->Fill(5);
1323           for(Int_t i=0; i<4; i++){
1324                 AliESDtrack *trk = esd->GetTrack(TrackIndex[i]);
1325
1326                 if(trk->Pt() > 1){
1327                         fRecTPCsignal[nLepton] = trk->GetTPCsignal();
1328                         qLepton[nLepton] = trk->Charge();
1329                         if(fRecTPCsignal[nLepton] > 40 && fRecTPCsignal[nLepton] < 70){
1330                                         vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), muonMass);
1331                                         mass[nLepton] = 0;
1332                                         }
1333                         if(fRecTPCsignal[nLepton] > 70 && fRecTPCsignal[nLepton] < 100){
1334                                         vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), electronMass);
1335                                         mass[nLepton] = 1;
1336                                         }
1337                         nLepton++;
1338                         }
1339                 else{
1340                         qPion[nPion] = trk->Charge();
1341                         vPion[nPion].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), pionMass);
1342                         nPion++;
1343                         }
1344
1345                 if(nLepton > 2 || nPion > 2) break;
1346                 }
1347         if((nLepton == 2) && (nPion == 2)){
1348                 fHistNeventsPsi2s->Fill(6);
1349                 if(qLepton[0]*qLepton[1] > 0) fHistNeventsPsi2s->Fill(7);
1350                 if(qPion[0]*qPion[1] > 0) fHistNeventsPsi2s->Fill(8);
1351                 if((qLepton[0]*qLepton[1] > 0) && (qPion[0]*qPion[1] > 0)) fHistNeventsPsi2s->Fill(9);
1352                 if((qLepton[0]*qLepton[1] < 0) && (qPion[0]*qPion[1] < 0)){
1353                         fHistNeventsPsi2s->Fill(10);
1354                         if(mass[0] == mass[1]) {
1355                                 fHistNeventsPsi2s->Fill(11);
1356                                 vCandidate = vLepton[0]+vLepton[1]+vPion[0]+vPion[1];
1357                                 vDilepton = vLepton[0]+vLepton[1];
1358                                 fHistPsi2sMassVsPt->Fill(vCandidate.M(),vCandidate.Pt());
1359                                 if(vCandidate.Pt() < 0.15) fHistPsi2sMassCoherent->Fill(vCandidate.M());
1360                                 if(mass[0] == 0) fHistNeventsPsi2s->Fill(12);
1361                                 if(mass[0] == 1) fHistNeventsPsi2s->Fill(13);
1362                                 }
1363                         }
1364                 }
1365   }
1366
1367   PostData(4, fListHist);
1368
1369 }
1370
1371 //_____________________________________________________________________________
1372 void AliAnalysisTaskUpcPsi2s::RunESDtree()
1373 {
1374
1375   //input event
1376   AliESDEvent *esd = (AliESDEvent*) InputEvent();
1377   if(!esd) return;
1378
1379   if(isMC) RunESDMC(esd);
1380
1381   //input data
1382   const char *filnam = ((TTree*) GetInputData(0))->GetCurrentFile()->GetName();
1383   fDataFilnam->Clear();
1384   fDataFilnam->SetString(filnam);
1385   fEvtNum = ((TTree*) GetInputData(0))->GetTree()->GetReadEntry();
1386   fRunNum = esd->GetRunNumber();
1387
1388    //Trigger
1389   TString trigger = esd->GetFiredTriggerClasses();
1390
1391   fTrigger[0]  = trigger.Contains("CCUP4-B"); // Central UPC Pb-Pb 2011
1392   fTrigger[1]  = trigger.Contains("CCUP2-B"); // Double gap
1393   fTrigger[2]  = trigger.Contains("CCUP7-B"); // Central UPC p-Pb 2013
1394
1395   Bool_t isTriggered = kFALSE;
1396   for(Int_t i=0; i<ntrg; i++) {
1397     if( fTrigger[i] ) isTriggered = kTRUE;
1398   }
1399   if(!isMC && !isTriggered ) return;
1400
1401   //trigger inputs
1402   fL0inputs = esd->GetHeader()->GetL0TriggerInputs();
1403   fL1inputs = esd->GetHeader()->GetL1TriggerInputs();
1404
1405   //TOF trigger info (0OMU)
1406   fTOFtrig1 = esd->GetHeader()->IsTriggerInputFired("0OMU");
1407   fTOFtrig2 = esd->GetHeader()->GetActiveTriggerInputs().Contains("0OMU") ? ((esd->GetHeader()) ? esd->GetHeader()->IsTriggerInputFired("0OMU") : kFALSE) : TESTBIT(esd->GetHeader()->GetL0TriggerInputs(), (kFALSE) ? 21 : 9);
1408
1409   //Event identification
1410   fPerNum = esd->GetPeriodNumber();
1411   fOrbNum = esd->GetOrbitNumber();
1412   fBCrossNum = esd->GetBunchCrossNumber();
1413
1414   //primary vertex
1415   AliESDVertex *fESDVertex = (AliESDVertex*) esd->GetPrimaryVertex();
1416   fVtxContrib = fESDVertex->GetNContributors();
1417   fVtxPos[0] = fESDVertex->GetX();
1418   fVtxPos[1] = fESDVertex->GetY();
1419   fVtxPos[2] = fESDVertex->GetZ();
1420   Double_t CovMatx[6];
1421   fESDVertex->GetCovarianceMatrix(CovMatx);
1422   fVtxErr[0] = CovMatx[0];
1423   fVtxErr[1] = CovMatx[1];
1424   fVtxErr[2] = CovMatx[2];
1425   fVtxChi2 = fESDVertex->GetChi2();
1426   fVtxNDF = fESDVertex->GetNDF();
1427
1428   //SPD primary vertex
1429   AliESDVertex *fSPDVertex = (AliESDVertex*) esd->GetPrimaryVertexSPD();
1430   if(fSPDVertex){
1431         fSpdVtxPos[0] = fSPDVertex->GetX();
1432         fSpdVtxPos[1] = fSPDVertex->GetY();
1433         fSpdVtxPos[2] = fSPDVertex->GetZ();
1434         }
1435
1436   //Tracklets
1437   fNtracklets = esd->GetMultiplicity()->GetNumberOfTracklets();
1438
1439   //VZERO, ZDC
1440   AliESDVZERO *fV0data = esd->GetVZEROData();
1441   AliESDZDC *fZDCdata = esd->GetESDZDC();
1442
1443   fV0Adecision = fV0data->GetV0ADecision();
1444   fV0Cdecision = fV0data->GetV0CDecision();
1445   fZDCAenergy = fZDCdata->GetZN2TowerEnergy()[0];
1446   fZDCCenergy = fZDCdata->GetZN1TowerEnergy()[0];
1447
1448   fNLooseTracks = 0;
1449
1450   //Track loop - loose cuts
1451   for(Int_t itr=0; itr<esd ->GetNumberOfTracks(); itr++) {
1452     AliESDtrack *trk = esd->GetTrack(itr);
1453     if( !trk ) continue;
1454
1455       if(!(trk->GetStatus() & AliESDtrack::kTPCrefit) ) continue;
1456       if(!(trk->GetStatus() & AliESDtrack::kITSrefit) ) continue;
1457       if(trk->GetTPCNcls() < 20)continue;
1458       fNLooseTracks++;
1459   }//Track loop -loose cuts
1460
1461   Int_t nGoodTracks=0;
1462   Int_t TrackIndex[5] = {-1,-1,-1,-1,-1};
1463
1464   //Two Track loop
1465   for(Int_t itr=0; itr<esd ->GetNumberOfTracks(); itr++) {
1466     AliESDtrack *trk = esd->GetTrack(itr);
1467     if( !trk ) continue;
1468
1469       if(!(trk->GetStatus() & AliESDtrack::kTPCrefit) ) continue;
1470       if(!(trk->GetStatus() & AliESDtrack::kITSrefit) ) continue;
1471       if(trk->GetTPCNcls() < 70)continue;
1472       if(trk->GetTPCchi2()/trk->GetTPCNcls() > 4)continue;
1473       if((!trk->HasPointOnITSLayer(0))&&(!trk->HasPointOnITSLayer(1))) continue;
1474       Float_t dca[2] = {0.0,0.0}; AliExternalTrackParam cParam;
1475       if(!trk->RelateToVertex(fESDVertex, esd->GetMagneticField(),300.,&cParam)) continue;
1476       trk->GetImpactParameters(dca[0],dca[1]);
1477       if(TMath::Abs(dca[1]) > 2) continue;
1478       if(TMath::Abs(dca[0]) > 0.2) continue;
1479
1480       TrackIndex[nGoodTracks] = itr;
1481       nGoodTracks++;
1482       if(nGoodTracks > 2) break;
1483   }//Track loop
1484
1485   fJPsiESDTracks->Clear("C");
1486   if(nGoodTracks == 2){
1487           for(Int_t i=0; i<2; i++){
1488                 AliESDtrack *trk = esd->GetTrack(TrackIndex[i]);
1489
1490                 AliExternalTrackParam cParam;
1491                 trk->RelateToVertex(fESDVertex, esd->GetMagneticField(),300.,&cParam);// to get trk->GetImpactParameters(DCAxy,DCAz);
1492
1493                 new((*fJPsiESDTracks)[i]) AliESDtrack(*trk);
1494
1495                 fPIDTPCMuon[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kMuon);
1496                 fPIDTPCElectron[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kElectron);
1497                 fPIDTPCPion[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kPion);
1498                 fPIDTPCKaon[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kKaon);
1499                 fPIDTPCProton[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kProton);
1500
1501                 fPIDTOFMuon[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kMuon);
1502                 fPIDTOFElectron[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kElectron);
1503                 fPIDTOFPion[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kPion);
1504                 fPIDTOFKaon[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kKaon);
1505                 fPIDTOFProton[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kProton);
1506
1507                 Double_t pos[3]={0,0,0};
1508                 if(!trk->GetXYZAt(378,esd->GetMagneticField(),pos)) fTOFphi[i] = -666;
1509                 else {
1510                      fTOFphi[i] =  TMath::ATan2(pos[1],pos[0])*TMath::RadToDeg();
1511                      if(fTOFphi[i] < 0) fTOFphi[i]+=(2*TMath::Pi()*TMath::RadToDeg());
1512                      }
1513                 }
1514   if(!isMC) fJPsiTree ->Fill();
1515   }
1516
1517   nGoodTracks = 0;
1518   //Four track loop
1519   for(Int_t itr=0; itr<esd ->GetNumberOfTracks(); itr++) {
1520     AliESDtrack *trk = esd->GetTrack(itr);
1521     if( !trk ) continue;
1522
1523       if(!(trk->GetStatus() & AliESDtrack::kTPCrefit) ) continue;
1524       if(!(trk->GetStatus() & AliESDtrack::kITSrefit) ) continue;
1525       if(trk->GetTPCNcls() < 50)continue;
1526       if(trk->GetTPCchi2()/trk->GetTPCNcls() > 4)continue;
1527       Float_t dca[2] = {0.0,0.0}; AliExternalTrackParam cParam;
1528       if(!trk->RelateToVertex(fESDVertex, esd->GetMagneticField(),300.,&cParam)) continue;
1529       trk->GetImpactParameters(dca[0],dca[1]);
1530       if(TMath::Abs(dca[1]) > 2) continue;
1531
1532       TrackIndex[nGoodTracks] = itr;
1533       nGoodTracks++;
1534       if(nGoodTracks > 4) break;
1535   }//Track loop
1536
1537   fPsi2sESDTracks->Clear("C");
1538   if(nGoodTracks == 4){
1539           for(Int_t i=0; i<4; i++){
1540                 AliESDtrack *trk = esd->GetTrack(TrackIndex[i]);
1541
1542                 AliExternalTrackParam cParam;
1543                 trk->RelateToVertex(fESDVertex, esd->GetMagneticField(),300.,&cParam);// to get trk->GetImpactParameters(DCAxy,DCAz);
1544
1545                 new((*fPsi2sESDTracks)[i]) AliESDtrack(*trk);
1546
1547                 fPIDTPCMuon[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kMuon);
1548                 fPIDTPCElectron[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kElectron);
1549                 fPIDTPCPion[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kPion);
1550                 fPIDTPCKaon[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kKaon);
1551                 fPIDTPCProton[i] = fPIDResponse->NumberOfSigmasTPC(trk,AliPID::kProton);
1552
1553                 fPIDTOFMuon[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kMuon);
1554                 fPIDTOFElectron[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kElectron);
1555                 fPIDTOFPion[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kPion);
1556                 fPIDTOFKaon[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kKaon);
1557                 fPIDTOFProton[i] = fPIDResponse->NumberOfSigmasTOF(trk,AliPID::kProton);
1558
1559                 Double_t pos[3]={0,0,0};
1560                 if(!trk->GetXYZAt(378,esd->GetMagneticField(),pos)) fTOFphi[i] = -666;
1561                 else {
1562                      fTOFphi[i] =  TMath::ATan2(pos[1],pos[0])*TMath::RadToDeg();
1563                      if(fTOFphi[i] < 0) fTOFphi[i]+=(2*TMath::Pi()*TMath::RadToDeg());
1564                      }
1565                 }
1566   if(!isMC) fPsi2sTree ->Fill();
1567   }
1568
1569   if(isMC){
1570         fJPsiTree ->Fill();
1571         fPsi2sTree ->Fill();
1572   }
1573
1574   PostData(1, fJPsiTree);
1575   PostData(2, fPsi2sTree);
1576
1577 }//RunESD
1578
1579
1580 //_____________________________________________________________________________
1581 void AliAnalysisTaskUpcPsi2s::RunESDMC(AliESDEvent* esd)
1582 {
1583
1584   AliTriggerAnalysis *fTrigAna = new AliTriggerAnalysis();
1585   fTrigAna->SetAnalyzeMC(isMC);
1586
1587   if(fTrigAna->SPDFiredChips(esd,1,kFALSE,2) > 1) fTriggerInputsMC[0] = kTRUE;
1588   if(fTrigAna->SPDFiredChips(esd,1,kFALSE,2) < 2) fTriggerInputsMC[0] = kFALSE;
1589
1590   fTriggerInputsMC[1] = esd->GetHeader()->IsTriggerInputFired("0OMU");
1591   fTriggerInputsMC[2] = esd->GetHeader()->IsTriggerInputFired("0VBA");
1592   fTriggerInputsMC[3] = esd->GetHeader()->IsTriggerInputFired("0VBC");
1593
1594   fGenPart->Clear("C");
1595
1596   AliMCEvent *mc = MCEvent();
1597   if(!mc) return;
1598
1599   Int_t nmc = 0;
1600   //loop over mc particles
1601   for(Int_t imc=0; imc<mc->GetNumberOfTracks(); imc++) {
1602     AliMCParticle *mcPart = (AliMCParticle*) mc->GetTrack(imc);
1603     if(!mcPart) continue;
1604
1605     if(mcPart->GetMother() >= 0) continue;
1606
1607     TParticle *part = (TParticle*) fGenPart->ConstructedAt(nmc++);
1608     part->SetMomentum(mcPart->Px(), mcPart->Py(), mcPart->Pz(), mcPart->E());
1609     part->SetPdgCode(mcPart->PdgCode());
1610     part->SetUniqueID(imc);
1611   }//loop over mc particles
1612
1613 }//RunESDMC
1614
1615
1616
1617 //_____________________________________________________________________________
1618 void AliAnalysisTaskUpcPsi2s::Terminate(Option_t *)
1619 {
1620
1621   cout<<"Analysis complete."<<endl;
1622 }//Terminate
1623
1624 //_____________________________________________________________________________
1625 Double_t AliAnalysisTaskUpcPsi2s::GetMedian(Double_t *daArray) {
1626     // Allocate an array of the same size and sort it.
1627     Double_t dpSorted[4];
1628     for (Int_t i = 0; i < 4; ++i) {
1629         dpSorted[i] = daArray[i];
1630     }
1631     for (Int_t i = 3; i > 0; --i) {
1632         for (Int_t j = 0; j < i; ++j) {
1633             if (dpSorted[j] > dpSorted[j+1]) {
1634                 Double_t dTemp = dpSorted[j];
1635                 dpSorted[j] = dpSorted[j+1];
1636                 dpSorted[j+1] = dTemp;
1637             }
1638         }
1639     }
1640
1641     // Middle or average of middle values in the sorted array.
1642     Double_t dMedian = 0.0;
1643     dMedian = (dpSorted[2] + dpSorted[1])/2.0;
1644
1645     return dMedian;
1646 }
1647
1648 //_____________________________________________________________________________
1649 void AliAnalysisTaskUpcPsi2s::RunAODsystematics(AliAODEvent* aod)
1650 {
1651
1652   Double_t fJPsiSels[4];
1653
1654   fJPsiSels[0] =   70; //min number of TPC clusters
1655   fJPsiSels[1] =   4; //chi2
1656   fJPsiSels[2] =   2; //DCAz
1657   fJPsiSels[3] =   1; // DCAxy 1x
1658
1659   Double_t fJPsiSelsMid[4];
1660
1661   fJPsiSelsMid[0] =   70; //min number of TPC clusters
1662   fJPsiSelsMid[1] =   4; //chi2
1663   fJPsiSelsMid[2] =   2; //DCAz
1664   fJPsiSelsMid[3] =   1; // DCAxy 1x
1665
1666   Double_t fJPsiSelsLoose[4];
1667
1668   fJPsiSelsLoose[0] =   60; //min number of TPC clusters
1669   fJPsiSelsLoose[1] =   5; //chi2
1670   fJPsiSelsLoose[2] =   3; //DCAz
1671   fJPsiSelsLoose[3] =   2; // DCAxy 2x
1672
1673   Double_t fJPsiSelsTight[4];
1674
1675   fJPsiSelsTight[0] =   80; //min number of TPC clusters
1676   fJPsiSelsTight[1] =   3.5; //chi2
1677   fJPsiSelsTight[2] =   1; //DCAz
1678   fJPsiSelsTight[3] =   0.5; // DCAxy 0.5x
1679
1680   Int_t nGoodTracks = 0;
1681   Int_t TrackIndex[5] = {-1,-1,-1,-1,-1};
1682
1683   TLorentzVector vLepton[4], vPion[4], vCandidate, vDilepton;
1684   Short_t qLepton[4],qPion[4];
1685   UInt_t nLepton=0, nPion=0, nHighPt=0;
1686   Double_t fRecTPCsignal[5], fRecTPCsignalDist;
1687   Int_t fChannel = 0;
1688
1689   AliAODVertex *fAODVertex = aod->GetPrimaryVertex();
1690
1691   TDatabasePDG *pdgdat = TDatabasePDG::Instance();
1692
1693   TParticlePDG *partMuon = pdgdat->GetParticle( 13 );
1694   Double_t muonMass = partMuon->Mass();
1695
1696   TParticlePDG *partElectron = pdgdat->GetParticle( 11 );
1697   Double_t electronMass = partElectron->Mass();
1698
1699   TParticlePDG *partPion = pdgdat->GetParticle( 211 );
1700   Double_t pionMass = partPion->Mass();
1701
1702
1703 for(Int_t i=0; i<5; i++){
1704           //cout<<"Loose sytematics, cut"<<i<<endl;
1705           for(Int_t j=0; j<4; j++){
1706                   if(i==j) fJPsiSels[j] = fJPsiSelsLoose[i];
1707                   else fJPsiSels[j] = fJPsiSelsMid[j];
1708           }
1709   //Two track loop
1710   nGoodTracks = 0;
1711   for(Int_t itr=0; itr<aod ->GetNumberOfTracks(); itr++) {
1712     AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(itr));
1713     if( !trk ) continue;
1714     if(!(trk->TestFilterBit(1<<0))) continue;
1715
1716       if(!(trk->GetStatus() & AliESDtrack::kTPCrefit) ) continue;
1717       if(!(trk->GetStatus() & AliESDtrack::kITSrefit) ) continue;
1718       if(i!=4){ if((!trk->HasPointOnITSLayer(0))&&(!trk->HasPointOnITSLayer(1))) continue;}
1719       Double_t dca[2] = {0.0,0.0}, cov[3] = {0.0,0.0,0.0};
1720       AliAODTrack* trk_clone=(AliAODTrack*)trk->Clone("trk_clone");
1721       if(!trk_clone->PropagateToDCA(fAODVertex,aod->GetMagneticField(),300.,dca,cov)) continue;
1722       delete trk_clone;
1723       Double_t cut_DCAxy = (0.0182 + 0.0350/TMath::Power(trk->Pt(),1.01));
1724
1725       if(trk->GetTPCNcls() < fJPsiSels[0])continue;
1726       if(trk->Chi2perNDF() > fJPsiSels[1])continue;
1727       if(TMath::Abs(dca[1]) > fJPsiSels[2]) continue;
1728       if(TMath::Abs(dca[0]) > fJPsiSels[3]*cut_DCAxy) continue;
1729
1730       TrackIndex[nGoodTracks] = itr;
1731       nGoodTracks++;
1732
1733       if(nGoodTracks > 2) break;
1734   }//Track loop
1735
1736   Int_t mass[3]={-1,-1,-1};
1737   fChannel = 0;
1738   nLepton=0; nHighPt=0;
1739
1740   if(nGoodTracks == 2){
1741           for(Int_t k=0; k<2; k++){
1742                 AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(TrackIndex[k]));
1743                 if(!trk) AliFatal("Not a standard AOD");
1744
1745                 if(trk->Pt() > 1) nHighPt++;
1746                 fRecTPCsignal[nLepton] = trk->GetTPCsignal();
1747                 qLepton[nLepton] = trk->Charge();
1748                 if(fRecTPCsignal[nLepton] > 40 && fRecTPCsignal[nLepton] < 70){
1749                                 vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), muonMass);
1750                                 mass[nLepton] = 0;
1751                                 }
1752                 if(fRecTPCsignal[nLepton] > 70 && fRecTPCsignal[nLepton] < 100){
1753                                 vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), electronMass);
1754                                 mass[nLepton] = 1;
1755                                 }
1756                 nLepton++;
1757                 }
1758         if(nLepton == 2){
1759                 if(qLepton[0]*qLepton[1] < 0 && nHighPt > 0 && (mass[0]!=-1 || mass[1]!=-1)){
1760                         vCandidate = vLepton[0]+vLepton[1];
1761                         fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-56,2)+TMath::Power(fRecTPCsignal[1]-56,2));
1762                         if (fRecTPCsignalDist < 3.6*4.0) fChannel = -1;
1763                         else {
1764                                 fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-78,2)+TMath::Power(fRecTPCsignal[1]-78,2));
1765                                 if (fRecTPCsignalDist < 4.1*4.0) fChannel = 1;
1766                                 }
1767                         if(fChannel == -1 && vCandidate.Pt()<0.15) ((TH1D*)(fListJPsiLoose->At(i)))->Fill(vCandidate.M());
1768                         if(fChannel == 1 && vCandidate.Pt()<0.3) ((TH1D*)(fListJPsiLoose->At(i)))->Fill(vCandidate.M());
1769                         }
1770                 }
1771   }
1772 }//loose cuts
1773
1774 for(Int_t i=0; i<4; i++){
1775           //cout<<"Tight sytematics, cut"<<i<<endl;
1776           for(Int_t j=0; j<4; j++){
1777                   if(i==j) fJPsiSels[j] = fJPsiSelsTight[i];
1778                   else fJPsiSels[j] = fJPsiSelsMid[j];
1779           }
1780   //Two track loop
1781   nGoodTracks = 0;
1782   for(Int_t itr=0; itr<aod ->GetNumberOfTracks(); itr++) {
1783     AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(itr));
1784     if( !trk ) continue;
1785     if(!(trk->TestFilterBit(1<<0))) continue;
1786
1787       if(!(trk->GetStatus() & AliESDtrack::kTPCrefit) ) continue;
1788       if(!(trk->GetStatus() & AliESDtrack::kITSrefit) ) continue;
1789       if((!trk->HasPointOnITSLayer(0))&&(!trk->HasPointOnITSLayer(1))) continue;
1790       Double_t dca[2] = {0.0,0.0}, cov[3] = {0.0,0.0,0.0};
1791       AliAODTrack* trk_clone=(AliAODTrack*)trk->Clone("trk_clone");
1792       if(!trk_clone->PropagateToDCA(fAODVertex,aod->GetMagneticField(),300.,dca,cov)) continue;
1793       delete trk_clone;
1794       Double_t cut_DCAxy = (0.0182 + 0.0350/TMath::Power(trk->Pt(),1.01));
1795
1796       if(trk->GetTPCNcls() < fJPsiSels[0])continue;
1797       if(trk->Chi2perNDF() > fJPsiSels[1])continue;
1798       if(TMath::Abs(dca[1]) > fJPsiSels[2]) continue;
1799       if(TMath::Abs(dca[0]) > fJPsiSels[3]*cut_DCAxy) continue;
1800
1801       TrackIndex[nGoodTracks] = itr;
1802       nGoodTracks++;
1803
1804       if(nGoodTracks > 2) break;
1805   }//Track loop
1806
1807   Int_t mass[3]={-1,-1,-1};
1808   fChannel = 0;
1809   nLepton=0; nHighPt=0;
1810
1811   if(nGoodTracks == 2){
1812           for(Int_t k=0; k<2; k++){
1813                 AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(TrackIndex[k]));
1814                 if(!trk) AliFatal("Not a standard AOD");
1815
1816                 if(trk->Pt() > 1) nHighPt++;
1817                 fRecTPCsignal[nLepton] = trk->GetTPCsignal();
1818                 qLepton[nLepton] = trk->Charge();
1819                 if(fRecTPCsignal[nLepton] > 40 && fRecTPCsignal[nLepton] < 70){
1820                                 vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), muonMass);
1821                                 mass[nLepton] = 0;
1822                                 }
1823                 if(fRecTPCsignal[nLepton] > 70 && fRecTPCsignal[nLepton] < 100){
1824                                 vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), electronMass);
1825                                 mass[nLepton] = 1;
1826                                 }
1827                 nLepton++;
1828                 }
1829         if(nLepton == 2){
1830                 if(qLepton[0]*qLepton[1] < 0 && nHighPt > 0 && (mass[0]!=-1 || mass[1]!=-1)){
1831                         vCandidate = vLepton[0]+vLepton[1];
1832                         fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-56,2)+TMath::Power(fRecTPCsignal[1]-56,2));
1833                         if (fRecTPCsignalDist < 3.6*4.0) fChannel = -1;
1834                         else {
1835                                 fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-78,2)+TMath::Power(fRecTPCsignal[1]-78,2));
1836                                 if (fRecTPCsignalDist < 4.1*4.0) fChannel = 1;
1837                                 }
1838                         if(fChannel == -1 && vCandidate.Pt()<0.15) ((TH1D*)(fListJPsiTight->At(i)))->Fill(vCandidate.M());
1839                         if(fChannel == 1 && vCandidate.Pt()<0.3) ((TH1D*)(fListJPsiTight->At(i)))->Fill(vCandidate.M());
1840                         }
1841                 }
1842   }
1843 }//tight cuts
1844
1845 //---------------------------------------------Psi2s------------------------------------------------------------------------
1846
1847   Double_t fPsi2sSels[4];
1848
1849   fPsi2sSels[0] =   50; //min number of TPC clusters
1850   fPsi2sSels[1] =   4; //chi2
1851   fPsi2sSels[2] =   2; //DCAz
1852   fPsi2sSels[3] =   4; // DCAxy 1x
1853
1854   Double_t fPsi2sSelsMid[4];
1855
1856   fPsi2sSelsMid[0] =   50; //min number of TPC clusters
1857   fPsi2sSelsMid[1] =   4; //chi2
1858   fPsi2sSelsMid[2] =   2; //DCAz
1859   fPsi2sSelsMid[3] =   4; // DCAxy 1x
1860
1861   Double_t fPsi2sSelsLoose[4];
1862
1863   fPsi2sSelsLoose[0] =   60; //min number of TPC clusters
1864   fPsi2sSelsLoose[1] =   5; //chi2
1865   fPsi2sSelsLoose[2] =   3; //DCAz
1866   fPsi2sSelsLoose[3] =   6; // DCAxy 2x
1867
1868   Double_t fPsi2sSelsTight[4];
1869
1870   fPsi2sSelsTight[0] =   70; //min number of TPC clusters
1871   fPsi2sSelsTight[1] =   3.5; //chi2
1872   fPsi2sSelsTight[2] =   1; //DCAz
1873   fPsi2sSelsTight[3] =   2; // DCAxy 0.5x
1874
1875   nGoodTracks = 0; nLepton=0; nHighPt=0; fChannel = 0;
1876   Int_t nSpdHits = 0;
1877   Double_t TrackPt[5]={0,0,0,0,0};
1878   Double_t MeanPt = -1;
1879
1880 for(Int_t i=0; i<5; i++){
1881           //cout<<"Loose systematics psi2s, cut"<<i<<endl;
1882           for(Int_t j=0; j<4; j++){
1883                   if(i==j) fJPsiSels[j] = fJPsiSelsLoose[i];
1884                   else fJPsiSels[j] = fJPsiSelsMid[j];
1885           }
1886
1887   //Four track loop
1888   nGoodTracks = 0; nSpdHits = 0;
1889   for(Int_t itr=0; itr<aod ->GetNumberOfTracks(); itr++) {
1890     AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(itr));
1891     if( !trk ) continue;
1892     if(!(trk->TestFilterBit(1<<0))) continue;
1893
1894       if(!(trk->GetStatus() & AliESDtrack::kTPCrefit) ) continue;
1895       if(!(trk->GetStatus() & AliESDtrack::kITSrefit) ) continue;
1896       if((trk->HasPointOnITSLayer(0))||(trk->HasPointOnITSLayer(1))) nSpdHits++;
1897       Double_t dca[2] = {0.0,0.0}, cov[3] = {0.0,0.0,0.0};
1898       AliAODTrack* trk_clone=(AliAODTrack*)trk->Clone("trk_clone");
1899       if(!trk_clone->PropagateToDCA(fAODVertex,aod->GetMagneticField(),300.,dca,cov)) continue;
1900       delete trk_clone;
1901       Double_t cut_DCAxy = (0.0182 + 0.0350/TMath::Power(trk->Pt(),1.01));
1902
1903       if(trk->GetTPCNcls() < fJPsiSels[0])continue;
1904       if(trk->Chi2perNDF() > fJPsiSels[1])continue;
1905       if(TMath::Abs(dca[1]) > fJPsiSels[2]) continue;
1906       if(TMath::Abs(dca[0]) > fJPsiSels[3]*cut_DCAxy) continue;
1907       if((trk->HasPointOnITSLayer(0))||(trk->HasPointOnITSLayer(1))) nSpdHits++;
1908
1909       TrackIndex[nGoodTracks] = itr;
1910       TrackPt[nGoodTracks] = trk->Pt();
1911       nGoodTracks++;
1912
1913       if(nGoodTracks > 4) break;
1914   }//Track loop
1915
1916   Int_t mass[3]={-1,-1,-1};
1917   fChannel = 0;
1918   nLepton=0; nPion=0; nHighPt=0;
1919
1920   if(nGoodTracks == 4){
1921           if(i!=4){ if(nSpdHits<2) continue;}
1922           MeanPt = GetMedian(TrackPt);
1923           for(Int_t k=0; k<4; k++){
1924                 AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(TrackIndex[k]));
1925                 if(!trk) AliFatal("Not a standard AOD");
1926
1927                 if(trk->Pt() > MeanPt){
1928                         fRecTPCsignal[nLepton] = trk->GetTPCsignal();
1929                         qLepton[nLepton] = trk->Charge();
1930                         if(fRecTPCsignal[nLepton] > 40 && fRecTPCsignal[nLepton] < 70){
1931                                         vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), muonMass);
1932                                         mass[nLepton] = 0;
1933                                         }
1934                         if(fRecTPCsignal[nLepton] > 70 && fRecTPCsignal[nLepton] < 100){
1935                                         vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), electronMass);
1936                                         mass[nLepton] = 1;
1937                                         }
1938                         nLepton++;
1939                         }
1940                 else{
1941                         qPion[nPion] = trk->Charge();
1942                         vPion[nPion].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), pionMass);
1943                         nPion++;
1944                         }
1945                 }
1946         if((qLepton[0]*qLepton[1] < 0) && (qPion[0]*qPion[1] < 0) && mass[0] != -1 && mass[1] != -1){
1947                 vCandidate = vLepton[0]+vLepton[1]+vPion[0]+vPion[1];
1948                 vDilepton = vLepton[0]+vLepton[1];
1949                 fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-56,2)+TMath::Power(fRecTPCsignal[1]-56,2));
1950                 if (fRecTPCsignalDist < 3.6*4.0) fChannel = -1;
1951                 else {
1952                         fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-78,2)+TMath::Power(fRecTPCsignal[1]-78,2));
1953                         if (fRecTPCsignalDist < 4.1*4.0) fChannel = 1;
1954                         }
1955                 if(fChannel == -1) if(vDilepton.M() > 3.0 && vDilepton.M() < 3.2 && vCandidate.Pt()<0.15) ((TH1D*)(fListPsi2sLoose->At(i)))->Fill(vCandidate.M());
1956                 if(fChannel == 1) if(vDilepton.M() > 2.6 && vDilepton.M() < 3.2 && vCandidate.Pt()<0.3) ((TH1D*)(fListPsi2sLoose->At(i)))->Fill(vCandidate.M());
1957         }
1958   }
1959 }//loose cuts
1960
1961 for(Int_t i=0; i<4; i++){
1962           //cout<<"Tight systematics psi2s, cut"<<i<<endl;
1963           for(Int_t j=0; j<4; j++){
1964                   if(i==j) fJPsiSels[j] = fJPsiSelsTight[i];
1965                   else fJPsiSels[j] = fJPsiSelsMid[j];
1966           }
1967
1968   //Four track loop
1969   nGoodTracks = 0; nSpdHits = 0;
1970   for(Int_t itr=0; itr<aod ->GetNumberOfTracks(); itr++) {
1971     AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(itr));
1972     if( !trk ) continue;
1973     if(!(trk->TestFilterBit(1<<0))) continue;
1974
1975       if(!(trk->GetStatus() & AliESDtrack::kTPCrefit) ) continue;
1976       if(!(trk->GetStatus() & AliESDtrack::kITSrefit) ) continue;
1977       if((trk->HasPointOnITSLayer(0))||(trk->HasPointOnITSLayer(1))) nSpdHits++;
1978       Double_t dca[2] = {0.0,0.0}, cov[3] = {0.0,0.0,0.0};
1979       AliAODTrack* trk_clone=(AliAODTrack*)trk->Clone("trk_clone");
1980       if(!trk_clone->PropagateToDCA(fAODVertex,aod->GetMagneticField(),300.,dca,cov)) continue;
1981       delete trk_clone;
1982       Double_t cut_DCAxy = (0.0182 + 0.0350/TMath::Power(trk->Pt(),1.01));
1983
1984       if(trk->GetTPCNcls() < fJPsiSels[0])continue;
1985       if(trk->Chi2perNDF() > fJPsiSels[1])continue;
1986       if(TMath::Abs(dca[1]) > fJPsiSels[2]) continue;
1987       if(TMath::Abs(dca[0]) > fJPsiSels[3]*cut_DCAxy) continue;
1988       if((trk->HasPointOnITSLayer(0))||(trk->HasPointOnITSLayer(1))) nSpdHits++;
1989
1990       TrackIndex[nGoodTracks] = itr;
1991       TrackPt[nGoodTracks] = trk->Pt();
1992       nGoodTracks++;
1993
1994       if(nGoodTracks > 4) break;
1995   }//Track loop
1996
1997   Int_t mass[3]={-1,-1,-1};
1998   fChannel = 0;
1999     nLepton=0; nPion=0; nHighPt=0;
2000
2001   if(nGoodTracks == 4){
2002           if(nSpdHits<2) continue;
2003           MeanPt = GetMedian(TrackPt);
2004           for(Int_t k=0; k<4; k++){
2005                 AliAODTrack *trk = dynamic_cast<AliAODTrack*>(aod->GetTrack(TrackIndex[k]));
2006                 if(!trk) AliFatal("Not a standard AOD");
2007
2008                 if(trk->Pt() > MeanPt){
2009                         fRecTPCsignal[nLepton] = trk->GetTPCsignal();
2010                         qLepton[nLepton] = trk->Charge();
2011                         if(fRecTPCsignal[nLepton] > 40 && fRecTPCsignal[nLepton] < 70){
2012                                         vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), muonMass);
2013                                         mass[nLepton] = 0;
2014                                         }
2015                         if(fRecTPCsignal[nLepton] > 70 && fRecTPCsignal[nLepton] < 100){
2016                                         vLepton[nLepton].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), electronMass);
2017                                         mass[nLepton] = 1;
2018                                         }
2019                         nLepton++;
2020                         }
2021                 else{
2022                         qPion[nPion] = trk->Charge();
2023                         vPion[nPion].SetPtEtaPhiM(trk->Pt(), trk->Eta(), trk->Phi(), pionMass);
2024                         nPion++;
2025                         }
2026                 }
2027         if((qLepton[0]*qLepton[1] < 0) && (qPion[0]*qPion[1] < 0) && mass[0] != -1 && mass[1] != -1){
2028                 vCandidate = vLepton[0]+vLepton[1]+vPion[0]+vPion[1];
2029                 vDilepton = vLepton[0]+vLepton[1];
2030                 fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-56,2)+TMath::Power(fRecTPCsignal[1]-56,2));
2031                 if (fRecTPCsignalDist < 3.6*4.0) fChannel = -1;
2032                 else {
2033                         fRecTPCsignalDist = TMath::Sqrt(TMath::Power(fRecTPCsignal[0]-78,2)+TMath::Power(fRecTPCsignal[1]-78,2));
2034                         if (fRecTPCsignalDist < 4.1*4.0) fChannel = 1;
2035                         }
2036                 if(fChannel == -1) if(vDilepton.M() > 3.0 && vDilepton.M() < 3.2 && vCandidate.Pt()<0.15) ((TH1D*)(fListPsi2sTight->At(i)))->Fill(vCandidate.M());
2037                 if(fChannel == 1) if(vDilepton.M() > 2.6 && vDilepton.M() < 3.2 && vCandidate.Pt()<0.3) ((TH1D*)(fListPsi2sTight->At(i)))->Fill(vCandidate.M());
2038         }
2039   }
2040 }//Tight cuts
2041
2042 }