PWG4/PartCorrDep/AliAnaPi0.cxx

   1 /**************************************************************************
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   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  15 /* $Id: $ */
  16
  17 //_________________________________________________________________________
  18 // Class to collect two-photon invariant mass distributions for
  19 // extractin raw pi0 yield.
  20 //
  21 //-- Author: Dmitri Peressounko (RRC "KI")
  22 //-- Adapted to PartCorr frame by Lamia Benhabib (SUBATECH)
  23 //-- and Gustavo Conesa (INFN-Frascati)
  24 //_________________________________________________________________________
  25
  26
  27 // --- ROOT system ---
  28 #include "TH3.h"
  29 //#include "Riostream.h"
  30 #include "TCanvas.h"
  31 #include "TPad.h"
  32 #include "TROOT.h"
  33 #include "TClonesArray.h"
  34 #include "TObjString.h"
  35
  36 //---- AliRoot system ----
  37 #include "AliAnaPi0.h"
  38 #include "AliCaloTrackReader.h"
  39 #include "AliCaloPID.h"
  40 #include "AliStack.h"
  41 #include "AliFiducialCut.h"
  42 #include "TParticle.h"
  43 #include "AliAODCaloCluster.h"
  44 #include "AliVEvent.h"
  45 #include "AliPHOSGeoUtils.h"
  46 #include "AliEMCALGeoUtils.h"
  47 #include "AliESDCaloCluster.h"
  48 #include "AliESDEvent.h"
  49 #include "AliAODEvent.h"
  50
  51 ClassImp(AliAnaPi0)
  52
  53 //________________________________________________________________________________________________________________________________________________
  54 AliAnaPi0::AliAnaPi0() : AliAnaPartCorrBaseClass(),
  55 fNCentrBin(0),fNZvertBin(0),fNrpBin(0),
  56 fNPID(0),fNmaxMixEv(0), fZvtxCut(0.),fCalorimeter(""),
  57 fEMCALGeoName("EMCAL_COMPLETE"), fNModules(12), fEventsList(0x0), fhEtalon(0x0), fhReMod(0x0),
  58 fhRe1(0x0),fhMi1(0x0),fhRe2(0x0),fhMi2(0x0),fhRe3(0x0),fhMi3(0x0),fhEvents(0x0),
  59 fhPrimPt(0x0), fhPrimAccPt(0x0), fhPrimY(0x0), fhPrimAccY(0x0), fhPrimPhi(0x0), fhPrimAccPhi(0x0),
  60 fPHOSGeo(0x0),fEMCALGeo(0x0)
  61 {
  62 //Default Ctor
  63  InitParameters();
  64
  65 }
  66
  67 //________________________________________________________________________________________________________________________________________________
  68 AliAnaPi0::AliAnaPi0(const AliAnaPi0 & ex) : AliAnaPartCorrBaseClass(ex),
  69 fNCentrBin(ex.fNCentrBin),fNZvertBin(ex.fNZvertBin),fNrpBin(ex.fNrpBin),
  70 fNPID(ex.fNPID),fNmaxMixEv(ex.fNmaxMixEv),fZvtxCut(ex.fZvtxCut), fCalorimeter(ex.fCalorimeter),
  71 fEMCALGeoName(ex.fEMCALGeoName), fNModules(ex.fNModules), fEventsList(ex.fEventsList), fhEtalon(ex.fhEtalon), fhReMod(ex.fhReMod),
  72 fhRe1(ex.fhRe1),fhMi1(ex.fhMi1),fhRe2(ex.fhRe2),fhMi2(ex.fhMi2),fhRe3(ex.fhRe3),fhMi3(ex.fhMi3),fhEvents(ex.fhEvents),
  73 fhPrimPt(ex.fhPrimPt), fhPrimAccPt(ex.fhPrimAccPt), fhPrimY(ex.fhPrimY),
  74 fhPrimAccY(ex.fhPrimAccY), fhPrimPhi(ex.fhPrimPhi), fhPrimAccPhi(ex.fhPrimAccPhi),
  75 fPHOSGeo(ex.fPHOSGeo),fEMCALGeo(ex.fEMCALGeo)
  76 {
  77   // cpy ctor
  78   //Do not need it
  79 }
  80
  81 //________________________________________________________________________________________________________________________________________________
  82 AliAnaPi0 & AliAnaPi0::operator = (const AliAnaPi0 & ex)
  83 {
  84   // assignment operator
  85
  86   if(this == &ex)return *this;
  87   ((AliAnaPartCorrBaseClass *)this)->operator=(ex);
  88
  89   fNCentrBin = ex.fNCentrBin  ; fNZvertBin = ex.fNZvertBin  ; fNrpBin = ex.fNrpBin  ;
  90   fNPID = ex.fNPID  ; fNmaxMixEv = ex.fNmaxMixEv  ; fZvtxCut = ex.fZvtxCut  ;  fCalorimeter = ex.fCalorimeter  ;
  91   fEMCALGeoName = ex.fEMCALGeoName ; fNModules = ex.fNModules; fEventsList = ex.fEventsList  ;  fhEtalon = ex.fhEtalon  ;
  92   fhRe1 = ex.fhRe1  ; fhMi1 = ex.fhMi1  ; fhRe2 = ex.fhRe2  ; fhMi2 = ex.fhMi2  ; fhReMod = ex.fhReMod;
  93   fhRe3 = ex.fhRe3  ; fhMi3 = ex.fhMi3  ; fhEvents = ex.fhEvents  ;
  94   fhPrimPt = ex.fhPrimPt  ;  fhPrimAccPt = ex.fhPrimAccPt  ;  fhPrimY = ex.fhPrimY  ;
  95   fhPrimAccY = ex.fhPrimAccY  ;  fhPrimPhi = ex.fhPrimPhi  ;  fhPrimAccPhi = ex.fhPrimAccPhi ;
  96
  97   return *this;
  98
  99 }
 100
 101 //________________________________________________________________________________________________________________________________________________
 102 AliAnaPi0::~AliAnaPi0() {
 103   // Remove event containers
 104   if(fEventsList){
 105     for(Int_t ic=0; ic<fNCentrBin; ic++){
 106       for(Int_t iz=0; iz<fNZvertBin; iz++){
 107         for(Int_t irp=0; irp<fNrpBin; irp++){
 108           fEventsList[ic*fNZvertBin*fNrpBin+iz*fNrpBin+irp]->Delete() ;
 109           delete fEventsList[ic*fNZvertBin*fNrpBin+iz*fNrpBin+irp] ;
 110         }
 111       }
 112     }
 113     delete[] fEventsList;
 114     fEventsList=0 ;
 115   }
 116
 117   if(fPHOSGeo)  delete fPHOSGeo  ;
 118   if(fEMCALGeo) delete fEMCALGeo ;
 119
 120 }
 121
 122 //________________________________________________________________________________________________________________________________________________
 123 void AliAnaPi0::InitParameters()
 124 {
 125 //Init parameters when first called the analysis
 126 //Set default parameters
 127   SetInputAODName("PWG4Particle");
 128
 129   AddToHistogramsName("AnaPi0_");
 130   fNModules = 12; // set maximum to maximum number of EMCAL modules
 131   fNCentrBin = 1;
 132   fNZvertBin = 1;
 133   fNrpBin    = 1;
 134   fNPID      = 9;
 135   fNmaxMixEv = 10;
 136   fZvtxCut   = 40;
 137   fCalorimeter  = "PHOS";
 138   fEMCALGeoName = "EMCAL_COMPLETE";
 139 }
 140 //________________________________________________________________________________________________________________________________________________
 141 void AliAnaPi0::Init()
 142 {
 143   //Init some data members needed in analysis
 144
 145   //Histograms binning and range
 146   if(!fhEtalon){                                                   //  p_T      alpha   d m_gg
 147     fhEtalon = new TH3D("hEtalon","Histo with binning parameters",50,0.,25.,10,0.,1.,200,0.,1.) ;
 148     fhEtalon->SetXTitle("P_{T} (GeV)") ;
 149     fhEtalon->SetYTitle("#alpha") ;
 150     fhEtalon->SetZTitle("m_{#gamma#gamma} (GeV)") ;
 151   }
 152
 153 }
 154
 155 //________________________________________________________________________________________________________________________________________________
 156 TList * AliAnaPi0::GetCreateOutputObjects()
 157 {
 158   // Create histograms to be saved in output file and
 159   // store them in fOutputContainer
 160
 161   //create event containers
 162   fEventsList = new TList*[fNCentrBin*fNZvertBin*fNrpBin] ;
 163
 164   for(Int_t ic=0; ic<fNCentrBin; ic++){
 165     for(Int_t iz=0; iz<fNZvertBin; iz++){
 166       for(Int_t irp=0; irp<fNrpBin; irp++){
 167         fEventsList[ic*fNZvertBin*fNrpBin+iz*fNrpBin+irp] = new TList() ;
 168       }
 169     }
 170   }
 171
 172   //If Geometry library loaded, do geometry selection during analysis.
 173   printf("AliAnaPi0::GetCreateOutputObjects() - PHOS geometry initialized!\n");
 174   fPHOSGeo = new AliPHOSGeoUtils("PHOSgeo") ;
 175
 176   printf("AliAnaPi0::GetCreateOutputObjects() - EMCAL geometry initialized!\n");
 177   fEMCALGeo = new AliEMCALGeoUtils(fEMCALGeoName) ;
 178
 179   TList * outputContainer = new TList() ;
 180   outputContainer->SetName(GetName());
 181
 182   fhReMod = new TH3D*[fNModules] ;
 183   fhRe1 = new TH3D*[fNCentrBin*fNPID] ;
 184   fhRe2 = new TH3D*[fNCentrBin*fNPID] ;
 185   fhRe3 = new TH3D*[fNCentrBin*fNPID] ;
 186   fhMi1 = new TH3D*[fNCentrBin*fNPID] ;
 187   fhMi2 = new TH3D*[fNCentrBin*fNPID] ;
 188   fhMi3 = new TH3D*[fNCentrBin*fNPID] ;
 189
 190   char key[255] ;
 191   char title[255] ;
 192
 193   for(Int_t ic=0; ic<fNCentrBin; ic++){
 194     for(Int_t ipid=0; ipid<fNPID; ipid++){
 195
 196       //Distance to bad module 1
 197       sprintf(key,"hRe_cen%d_pid%d_dist1",ic,ipid) ;
 198       sprintf(title,"Real m_{#gamma#gamma} distr. for centrality=%d and PID=%d",ic,ipid) ;
 199
 200       fhEtalon->Clone(key);
 201       fhRe1[ic*fNPID+ipid]=(TH3D*)fhEtalon->Clone(key) ;
 202       fhRe1[ic*fNPID+ipid]->SetName(key) ;
 203       fhRe1[ic*fNPID+ipid]->SetTitle(title) ;
 204       outputContainer->Add(fhRe1[ic*fNPID+ipid]) ;
 205
 206       sprintf(key,"hMi_cen%d_pid%d_dist1",ic,ipid) ;
 207       sprintf(title,"Mixed m_{#gamma#gamma} distr. for centrality=%d and PID=%d",ic,ipid) ;
 208       fhMi1[ic*fNPID+ipid]=(TH3D*)fhEtalon->Clone(key) ;
 209       fhMi1[ic*fNPID+ipid]->SetName(key) ;
 210       fhMi1[ic*fNPID+ipid]->SetTitle(title) ;
 211       outputContainer->Add(fhMi1[ic*fNPID+ipid]) ;
 212
 213       //Distance to bad module 2
 214       sprintf(key,"hRe_cen%d_pid%d_dist2",ic,ipid) ;
 215       sprintf(title,"Real m_{#gamma#gamma} distr. for centrality=%d and PID=%d",ic,ipid) ;
 216       fhRe2[ic*fNPID+ipid]=(TH3D*)fhEtalon->Clone(key) ;
 217       fhRe2[ic*fNPID+ipid]->SetName(key) ;
 218       fhRe2[ic*fNPID+ipid]->SetTitle(title) ;
 219       outputContainer->Add(fhRe2[ic*fNPID+ipid]) ;
 220
 221       sprintf(key,"hMi_cen%d_pid%d_dist2",ic,ipid) ;
 222       sprintf(title,"Mixed m_{#gamma#gamma} distr. for centrality=%d and PID=%d",ic,ipid) ;
 223       fhMi2[ic*fNPID+ipid]=(TH3D*)fhEtalon->Clone(key) ;
 224       fhMi2[ic*fNPID+ipid]->SetName(key) ;
 225       fhMi2[ic*fNPID+ipid]->SetTitle(title) ;
 226       outputContainer->Add(fhMi2[ic*fNPID+ipid]) ;
 227
 228       //Distance to bad module 3
 229       sprintf(key,"hRe_cen%d_pid%d_dist3",ic,ipid) ;
 230       sprintf(title,"Real m_{#gamma#gamma} distr. for centrality=%d and PID=%d",ic,ipid) ;
 231       fhRe3[ic*fNPID+ipid]=(TH3D*)fhEtalon->Clone(key) ;
 232       fhRe3[ic*fNPID+ipid]->SetName(key) ;
 233       fhRe3[ic*fNPID+ipid]->SetTitle(title) ;
 234       outputContainer->Add(fhRe3[ic*fNPID+ipid]) ;
 235
 236       sprintf(key,"hMi_cen%d_pid%d_dist3",ic,ipid) ;
 237       sprintf(title,"Mixed m_{#gamma#gamma} distr. for centrality=%d and PID=%d",ic,ipid) ;
 238       fhMi3[ic*fNPID+ipid]=(TH3D*)fhEtalon->Clone(key) ;
 239       fhMi3[ic*fNPID+ipid]->SetName(key) ;
 240       fhMi3[ic*fNPID+ipid]->SetTitle(title) ;
 241       outputContainer->Add(fhMi3[ic*fNPID+ipid]) ;
 242     }
 243   }
 244
 245
 246   fhEvents=new TH3D("hEvents","Number of events",fNCentrBin,0.,1.*fNCentrBin,
 247                     fNZvertBin,0.,1.*fNZvertBin,fNrpBin,0.,1.*fNrpBin) ;
 248   outputContainer->Add(fhEvents) ;
 249
 250   //Histograms filled only if MC data is requested
 251   if(IsDataMC() || (GetReader()->GetDataType() == AliCaloTrackReader::kMC) ){
 252     if(fhEtalon->GetXaxis()->GetXbins() && fhEtalon->GetXaxis()->GetXbins()->GetSize()){ //Variable bin size
 253       fhPrimPt = new TH1D("hPrimPt","Primary pi0 pt",fhEtalon->GetXaxis()->GetNbins(),fhEtalon->GetXaxis()->GetXbins()->GetArray()) ;
 254       fhPrimAccPt = new TH1D("hPrimAccPt","Primary pi0 pt with both photons in acceptance",fhEtalon->GetXaxis()->GetNbins(),
 255                              fhEtalon->GetXaxis()->GetXbins()->GetArray()) ;
 256     }
 257     else{
 258       fhPrimPt = new TH1D("hPrimPt","Primary pi0 pt",fhEtalon->GetXaxis()->GetNbins(),fhEtalon->GetXaxis()->GetXmin(),fhEtalon->GetXaxis()->GetXmax()) ;
 259       fhPrimAccPt = new TH1D("hPrimAccPt","Primary pi0 pt with both photons in acceptance",
 260                              fhEtalon->GetXaxis()->GetNbins(),fhEtalon->GetXaxis()->GetXmin(),fhEtalon->GetXaxis()->GetXmax()) ;
 261     }
 262     outputContainer->Add(fhPrimPt) ;
 263     outputContainer->Add(fhPrimAccPt) ;
 264
 265     fhPrimY = new TH1D("hPrimaryRapidity","Rapidity of primary pi0",100,-5.,5.) ;
 266     outputContainer->Add(fhPrimY) ;
 267
 268     fhPrimAccY = new TH1D("hPrimAccRapidity","Rapidity of primary pi0",100,-5.,5.) ;
 269     outputContainer->Add(fhPrimAccY) ;
 270
 271     fhPrimPhi = new TH1D("hPrimaryPhi","Azimithal of primary pi0",180,0.,360.) ;
 272     outputContainer->Add(fhPrimPhi) ;
 273
 274     fhPrimAccPhi = new TH1D("hPrimAccPhi","Azimithal of primary pi0 with accepted daughters",180,-0.,360.) ;
 275     outputContainer->Add(fhPrimAccPhi) ;
 276   }
 277
 278   for(Int_t imod=0; imod<fNModules; imod++){
 279         //Module dependent invariant mass
 280         sprintf(key,"hReMod_%d",imod) ;
 281         sprintf(title,"Real m_{#gamma#gamma} distr. for Module %d",imod) ;
 282         fhEtalon->Clone(key);
 283         fhReMod[imod]=(TH3D*)fhEtalon->Clone(key) ;
 284         fhReMod[imod]->SetName(key) ;
 285         fhReMod[imod]->SetTitle(title) ;
 286         outputContainer->Add(fhReMod[imod]) ;
 287   }
 288
 289
 290   //Save parameters used for analysis
 291   TString parList ; //this will be list of parameters used for this analysis.
 292   char onePar[255] ;
 293   sprintf(onePar,"--- AliAnaPi0 ---\n") ;
 294   parList+=onePar ;
 295   sprintf(onePar,"Number of bins in Centrality:  %d \n",fNCentrBin) ;
 296   parList+=onePar ;
 297   sprintf(onePar,"Number of bins in Z vert. pos: %d \n",fNZvertBin) ;
 298   parList+=onePar ;
 299   sprintf(onePar,"Number of bins in Reac. Plain: %d \n",fNrpBin) ;
 300   parList+=onePar ;
 301   sprintf(onePar,"Depth of event buffer: %d \n",fNmaxMixEv) ;
 302   parList+=onePar ;
 303   sprintf(onePar,"Number of different PID used:  %d \n",fNPID) ;
 304   parList+=onePar ;
 305   sprintf(onePar,"Cuts: \n") ;
 306   parList+=onePar ;
 307   sprintf(onePar,"Z vertex position: -%f < z < %f \n",fZvtxCut,fZvtxCut) ;
 308   parList+=onePar ;
 309   sprintf(onePar,"Calorimeter: %s \n",fCalorimeter.Data()) ;
 310   parList+=onePar ;
 311   sprintf(onePar,"Number of modules: %d \n",fNModules) ;
 312   parList+=onePar ;
 313
 314   TObjString *oString= new TObjString(parList) ;
 315   outputContainer->Add(oString);
 316
 317   return outputContainer;
 318 }
 319
 320 //_________________________________________________________________________________________________________________________________________________
 321 void AliAnaPi0::Print(const Option_t * /*opt*/) const
 322 {
 323   //Print some relevant parameters set for the analysis
 324   printf("**** Print %s %s ****\n", GetName(), GetTitle() ) ;
 325   AliAnaPartCorrBaseClass::Print(" ");
 326
 327   printf("Number of bins in Centrality:  %d \n",fNCentrBin) ;
 328   printf("Number of bins in Z vert. pos: %d \n",fNZvertBin) ;
 329   printf("Number of bins in Reac. Plain: %d \n",fNrpBin) ;
 330   printf("Depth of event buffer: %d \n",fNmaxMixEv) ;
 331   printf("Number of different PID used:  %d \n",fNPID) ;
 332   printf("Cuts: \n") ;
 333   printf("Z vertex position: -%2.3f < z < %2.3f \n",fZvtxCut,fZvtxCut) ;
 334   printf("Number of modules: %d \n",fNModules) ;
 335   printf("------------------------------------------------------\n") ;
 336 }
 337
 338 //____________________________________________________________________________________________________________________________________________________
 339 Int_t AliAnaPi0::GetModuleNumber(AliAODPWG4Particle * particle)
 340 {
 341         //Get the EMCAL/PHOS module number that corresponds to this particle
 342
 343         Int_t absId = -1;
 344         if(fCalorimeter=="EMCAL"){
 345                 fEMCALGeo->GetAbsCellIdFromEtaPhi(particle->Eta(),particle->Phi(), absId);
 346                 if(GetDebug() > 2)
 347                         printf("EMCAL: cluster eta %f, phi %f, absid %d, SuperModule %d\n",
 348                                    particle->Eta(), particle->Phi()*TMath::RadToDeg(),absId, fEMCALGeo->GetSuperModuleNumber(absId));
 349                 return fEMCALGeo->GetSuperModuleNumber(absId) ;
 350         }//EMCAL
 351         else{//PHOS
 352                 Int_t    relId[4];
 353                 if(!strcmp((GetReader()->GetInputEvent())->GetName(),"AliESDEvent"))   {
 354                         AliESDCaloCluster *cluster = ((AliESDEvent*)GetReader()->GetInputEvent())->GetCaloCluster(particle->GetCaloLabel(0));
 355                         if ( cluster->GetNCells() > 0) {
 356                                 absId = cluster->GetCellAbsId(0);
 357                                 if(GetDebug() > 2)
 358                                         printf("PHOS: cluster eta %f, phi %f, e %f, e cluster %f, absId %d\n",
 359                                                    particle->Eta(), particle->Phi()*TMath::RadToDeg(), particle->E(), cluster->E(), absId);
 360                         }
 361                         else return -1;
 362                 }//ESDs
 363                 else{
 364                         AliAODCaloCluster *cluster = ((AliAODEvent*)GetReader()->GetInputEvent())->GetCaloCluster(particle->GetCaloLabel(0));
 365                         if ( cluster->GetNCells() > 0) {
 366                                 absId = cluster->GetCellAbsId(0);
 367                                 if(GetDebug() > 2)
 368                                         printf("PHOS: cluster eta %f, phi %f, e %f, e cluster %f, absId %d\n",
 369                                                    particle->Eta(), particle->Phi()*TMath::RadToDeg(), particle->E(), cluster->E(), absId);
 370                         }
 371                         else return -1;
 372                 }//AODs
 373
 374                 if ( absId >= 0) {
 375                         fPHOSGeo->AbsToRelNumbering(absId,relId);
 376                         if(GetDebug() > 2)
 377                                 printf("PHOS: Module %d\n",relId[0]-1);
 378                         return relId[0]-1;
 379                 }
 380                 else return -1;
 381         }//PHOS
 382
 383         return -1;
 384 }
 385
 386 //____________________________________________________________________________________________________________________________________________________
 387 void AliAnaPi0::MakeAnalysisFillHistograms()
 388 {
 389   //Process one event and extract photons from AOD branch
 390   // filled with AliAnaPhoton and fill histos with invariant mass
 391
 392   //Apply some cuts on event: vertex position and centrality range
 393   Int_t iRun=(GetReader()->GetInputEvent())->GetRunNumber() ;
 394   if(IsBadRun(iRun)) return ;
 395
 396   Double_t vert[]={0,0,0} ; //vertex ;
 397   GetReader()->GetVertex(vert);
 398   if(vert[2]<-fZvtxCut || vert[2]> fZvtxCut) return ; //Event can not be used (vertex, centrality,... cuts not fulfilled)
 399
 400   //Get Centrality and calculate centrality bin
 401   //Does not exist in ESD yet???????
 402   Int_t curCentrBin=0 ;
 403
 404   //Get Reaction Plain position and calculate RP bin
 405   //does not exist in ESD yet????
 406   Int_t curRPBin=0 ;
 407
 408   Int_t curZvertBin=(Int_t)(0.5*fNZvertBin*(vert[2]+fZvtxCut)/fZvtxCut) ;
 409
 410   fhEvents->Fill(curCentrBin+0.5,curZvertBin+0.5,curRPBin+0.5) ;
 411
 412   Int_t nPhot = GetInputAODBranch()->GetEntriesFast() ;
 413   if(GetDebug() > 1) printf("AliAnaPi0::MakeAnalysisFillHistograms() - Photon entries %d\n", nPhot);
 414   Int_t module1 = -1;
 415   Int_t module2 = -1;
 416   for(Int_t i1=0; i1<nPhot-1; i1++){
 417     AliAODPWG4Particle * p1 = (AliAODPWG4Particle*) (GetInputAODBranch()->At(i1)) ;
 418     TLorentzVector photon1(p1->Px(),p1->Py(),p1->Pz(),p1->E());
 419         //Get Module number
 420         module1 = GetModuleNumber(p1);
 421     for(Int_t i2=i1+1; i2<nPhot; i2++){
 422       AliAODPWG4Particle * p2 = (AliAODPWG4Particle*) (GetInputAODBranch()->At(i2)) ;
 423       TLorentzVector photon2(p2->Px(),p2->Py(),p2->Pz(),p2->E());
 424           //Get module number
 425           module2 = GetModuleNumber(p2);
 426       Double_t m  = (photon1 + photon2).M() ;
 427       Double_t pt = (photon1 + photon2).Pt();
 428       Double_t a  = TMath::Abs(p1->E()-p2->E())/(p1->E()+p2->E()) ;
 429       if(GetDebug() > 2)
 430         printf("AliAnaPi0::MakeAnalysisFillHistograms() - Current Event: pT: photon1 %2.2f, photon2 %2.2f; Pair: pT %2.2f, mass %2.3f, a %f2.3\n",
 431                p1->Pt(), p2->Pt(), pt,m,a);
 432                 //Fill module dependent histograms
 433                 //if(module1==module2) printf("mod1 %d\n",module1);
 434                 if(module1==module2 && module1 >=0 && module1<fNModules)
 435                         fhReMod[module1]->Fill(pt,a,m) ;
 436
 437       for(Int_t ipid=0; ipid<fNPID; ipid++)
 438         {
 439           if((p1->IsPIDOK(ipid,AliCaloPID::kPhoton)) && (p2->IsPIDOK(ipid,AliCaloPID::kPhoton))){
 440             fhRe1[curCentrBin*fNPID+ipid]->Fill(pt,a,m) ;
 441             if(p1->DistToBad()>0 && p2->DistToBad()>0){
 442               fhRe2[curCentrBin*fNPID+ipid]->Fill(pt,a,m) ;
 443               if(p1->DistToBad()>1 && p2->DistToBad()>1){
 444                 fhRe3[curCentrBin*fNPID+ipid]->Fill(pt,a,m) ;
 445               }
 446             }
 447           }
 448         }
 449     }
 450   }
 451
 452   //Fill mixed
 453
 454   TList * evMixList=fEventsList[curCentrBin*fNZvertBin*fNrpBin+curZvertBin*fNrpBin+curRPBin] ;
 455   Int_t nMixed = evMixList->GetSize() ;
 456   for(Int_t ii=0; ii<nMixed; ii++){
 457     TClonesArray* ev2= (TClonesArray*) (evMixList->At(ii));
 458     Int_t nPhot2=ev2->GetEntriesFast() ;
 459     Double_t m = -999;
 460     if(GetDebug() > 1) printf("AliAnaPi0::MakeAnalysisFillHistograms() - Mixed event %d photon entries %d\n", ii, nPhot);
 461
 462     for(Int_t i1=0; i1<nPhot; i1++){
 463       AliAODPWG4Particle * p1 = (AliAODPWG4Particle*) (GetInputAODBranch()->At(i1)) ;
 464       TLorentzVector photon1(p1->Px(),p1->Py(),p1->Pz(),p1->E());
 465       for(Int_t i2=0; i2<nPhot2; i2++){
 466         AliAODPWG4Particle * p2 = (AliAODPWG4Particle*) (ev2->At(i2)) ;
 467
 468         TLorentzVector photon2(p2->Px(),p2->Py(),p2->Pz(),p2->E());
 469         m =           (photon1+photon2).M() ;
 470         Double_t pt = (photon1 + photon2).Pt();
 471         Double_t a  = TMath::Abs(p1->E()-p2->E())/(p1->E()+p2->E()) ;
 472         if(GetDebug() > 2)
 473           printf("AliAnaPi0::MakeAnalysisFillHistograms() - Mixed Event: pT: photon1 %2.2f, photon2 %2.2f; Pair: pT %2.2f, mass %2.3f, a %f2.3\n",
 474                  p1->Pt(), p2->Pt(), pt,m,a);
 475         for(Int_t ipid=0; ipid<fNPID; ipid++){
 476           if((p1->IsPIDOK(ipid,AliCaloPID::kPhoton)) && (p2->IsPIDOK(ipid,AliCaloPID::kPhoton))){
 477             fhMi1[curCentrBin*fNPID+ipid]->Fill(pt,a,m) ;
 478             if(p1->DistToBad()>0 && p2->DistToBad()>0){
 479               fhMi2[curCentrBin*fNPID+ipid]->Fill(pt,a,m) ;
 480               if(p1->DistToBad()>1 && p2->DistToBad()>1){
 481                 fhMi3[curCentrBin*fNPID+ipid]->Fill(pt,a,m) ;
 482               }
 483
 484             }
 485           }
 486         }
 487       }
 488     }
 489   }
 490
 491   TClonesArray *currentEvent = new TClonesArray(*GetInputAODBranch());
 492   //Add current event to buffer and Remove redandant events
 493   if(currentEvent->GetEntriesFast()>0){
 494     evMixList->AddFirst(currentEvent) ;
 495     currentEvent=0 ; //Now list of particles belongs to buffer and it will be deleted with buffer
 496     if(evMixList->GetSize()>=fNmaxMixEv)
 497       {
 498         TClonesArray * tmp = (TClonesArray*) (evMixList->Last()) ;
 499         evMixList->RemoveLast() ;
 500         delete tmp ;
 501       }
 502   }
 503   else{ //empty event
 504     delete currentEvent ;
 505     currentEvent=0 ;
 506   }
 507
 508   //Acceptance
 509   if(GetReader()->ReadStack()){
 510           AliStack * stack = GetMCStack();
 511           if(stack && (IsDataMC() || (GetReader()->GetDataType() == AliCaloTrackReader::kMC)) ){
 512              for(Int_t i=0 ; i<stack->GetNprimary(); i++){
 513                  TParticle * prim = stack->Particle(i) ;
 514                          if(prim->GetPdgCode() == 111){
 515                      Double_t pi0Pt = prim->Pt() ;
 516                      //printf("pi0, pt %2.2f\n",pi0Pt);
 517                     if(prim->Energy() == TMath::Abs(prim->Pz()))  continue ; //Protection against floating point exception
 518                     Double_t pi0Y  = 0.5*TMath::Log((prim->Energy()-prim->Pz())/(prim->Energy()+prim->Pz())) ;
 519                     Double_t phi   = TMath::RadToDeg()*prim->Phi() ;
 520                 if(TMath::Abs(pi0Y) < 0.5){
 521                    fhPrimPt->Fill(pi0Pt) ;
 522                 }
 523                 fhPrimY  ->Fill(pi0Y) ;
 524                     fhPrimPhi->Fill(phi) ;
 525
 526                 //Check if both photons hit Calorimeter
 527                 Int_t iphot1=prim->GetFirstDaughter() ;
 528                 Int_t iphot2=prim->GetLastDaughter() ;
 529                 if(iphot1>-1 && iphot1<stack->GetNtrack() && iphot2>-1 && iphot2<stack->GetNtrack()){
 530                    TParticle * phot1 = stack->Particle(iphot1) ;
 531                    TParticle * phot2 = stack->Particle(iphot2) ;
 532                    if(phot1 && phot2 && phot1->GetPdgCode()==22 && phot2->GetPdgCode()==22){
 533                    //printf("2 photons: photon 1: pt %2.2f, phi %3.2f, eta %1.2f; photon 2: pt %2.2f, phi %3.2f, eta %1.2f\n",
 534                            //   phot1->Pt(), phot1->Phi()*180./3.1415, phot1->Eta(), phot2->Pt(), phot2->Phi()*180./3.1415, phot2->Eta());
 535                    Bool_t inacceptance = kFALSE;
 536
 537                            if(fCalorimeter == "PHOS"){
 538                                    if(fPHOSGeo){
 539                                            Int_t mod ;
 540                                            Double_t x,z ;
 541                                            if(fPHOSGeo->ImpactOnEmc(phot1,mod,z,x) && fPHOSGeo->ImpactOnEmc(phot2,mod,z,x))
 542                                                    inacceptance = kTRUE;
 543                                            if(GetDebug() > 2) printf("In %s Real acceptance? %d\n",fCalorimeter.Data(),inacceptance);
 544                                    }
 545                                    else{
 546                                            TLorentzVector lv1, lv2;
 547                                            phot1->Momentum(lv1);
 548                                            phot2->Momentum(lv2);
 549                                            if(GetFiducialCut()->IsInFiducialCut(lv1,fCalorimeter) && GetFiducialCut()->IsInFiducialCut(lv2,fCalorimeter))
 550                                            inacceptance = kTRUE ;
 551                                            if(GetDebug() > 2) printf("In %s fiducial cut acceptance? %d\n",fCalorimeter.Data(),inacceptance);
 552                                    }
 553
 554                            }
 555                            else if(fCalorimeter == "EMCAL"){
 556                                    if(fEMCALGeo){
 557                                            if(fEMCALGeo->Impact(phot1) && fEMCALGeo->Impact(phot2))
 558                                                    inacceptance = kTRUE;
 559                                            if(GetDebug() > 2) printf("In %s Real acceptance? %d\n",fCalorimeter.Data(),inacceptance);
 560                                         }
 561                                    else{
 562                                            TLorentzVector lv1, lv2;
 563                                            phot1->Momentum(lv1);
 564                                            phot2->Momentum(lv2);
 565                                            if(GetFiducialCut()->IsInFiducialCut(lv1,fCalorimeter) && GetFiducialCut()->IsInFiducialCut(lv2,fCalorimeter))
 566                                                    inacceptance = kTRUE ;
 567                                            if(GetDebug() > 2) printf("In %s fiducial cut acceptance? %d\n",fCalorimeter.Data(),inacceptance);
 568                                    }
 569                    }
 570
 571                    if(inacceptance){
 572                       fhPrimAccPt->Fill(pi0Pt) ;
 573                       fhPrimAccPhi->Fill(phi) ;
 574                       fhPrimAccY->Fill(pi0Y) ;
 575                    }//Accepted
 576                }// 2 photons
 577              }//Check daughters exist
 578        }// Primary pi0
 579      }//loop on primaries
 580    }//stack exists and data is MC
 581   }//read stack
 582   else if(GetReader()->ReadAODMCParticles()){
 583                 if(GetDebug() >= 0)  printf("AliAnaPi0::MakeAnalysisFillHistograms() - Acceptance calculation with MCParticles not implemented yet\n");
 584   }
 585
 586 }
 587
 588 //________________________________________________________________________
 589 void AliAnaPi0::ReadHistograms(TList* outputList)
 590 {
 591         // Needed when Terminate is executed in distributed environment
 592         // Refill analysis histograms of this class with corresponding histograms in output list.
 593
 594         // Histograms of this analsys are kept in the same list as other analysis, recover the position of
 595         // the first one and then add the next.
 596         Int_t index = outputList->IndexOf(outputList->FindObject(GetAddedHistogramsStringToName()+"hRe_cen0_pid0_dist1"));
 597
 598         if(!fhRe1) fhRe1 = new TH3D*[fNCentrBin*fNPID] ;
 599         if(!fhRe2) fhRe2 = new TH3D*[fNCentrBin*fNPID] ;
 600         if(!fhRe3) fhRe3 = new TH3D*[fNCentrBin*fNPID] ;
 601         if(!fhMi1) fhMi1 = new TH3D*[fNCentrBin*fNPID] ;
 602         if(!fhMi2) fhMi2 = new TH3D*[fNCentrBin*fNPID] ;
 603         if(!fhMi3) fhMi3 = new TH3D*[fNCentrBin*fNPID] ;
 604         if(!fhReMod) fhReMod = new TH3D*[fNModules] ;
 605
 606     for(Int_t ic=0; ic<fNCentrBin; ic++){
 607         for(Int_t ipid=0; ipid<fNPID; ipid++){
 608                         fhRe1[ic*fNPID+ipid] = (TH3D*) outputList->At(index++);
 609                         fhMi1[ic*fNPID+ipid] = (TH3D*) outputList->At(index++);
 610                         fhRe2[ic*fNPID+ipid] = (TH3D*) outputList->At(index++);
 611                         fhMi2[ic*fNPID+ipid] = (TH3D*) outputList->At(index++);
 612                         fhRe3[ic*fNPID+ipid] = (TH3D*) outputList->At(index++);
 613                         fhMi3[ic*fNPID+ipid] = (TH3D*) outputList->At(index++);
 614                 }
 615         }
 616
 617         fhEvents = (TH3D *) outputList->At(index++);
 618
 619         //Histograms filled only if MC data is requested
 620         if(IsDataMC() || (GetReader()->GetDataType() == AliCaloTrackReader::kMC) ){
 621                  fhPrimPt     = (TH1D*)  outputList->At(index++);
 622                  fhPrimAccPt  = (TH1D*)  outputList->At(index++);
 623                  fhPrimY      = (TH1D*)  outputList->At(index++);
 624                  fhPrimAccY   = (TH1D*)  outputList->At(index++);
 625                  fhPrimPhi    = (TH1D*)  outputList->At(index++);
 626                  fhPrimAccPhi = (TH1D*)  outputList->At(index++);
 627         }
 628
 629         for(Int_t imod=0; imod < fNModules; imod++)
 630                         fhReMod[imod] = (TH3D*) outputList->At(index++);
 631
 632 }
 633
 634
 635 //____________________________________________________________________________________________________________________________________________________
 636 void AliAnaPi0::Terminate(TList* outputList)
 637 {
 638   //Do some calculations and plots from the final histograms.
 639
 640   printf(" *** %s Terminate:\n", GetName()) ;
 641
 642   //Recover histograms from output histograms list, needed for distributed analysis.
 643   ReadHistograms(outputList);
 644
 645   if (!fhRe1) {
 646      printf("AliAnaPi0::Terminate() - Error: Remote output histograms not imported in AliAnaPi0 object");
 647      return;
 648   }
 649
 650   printf("AliAnaPi0::Terminate()         Mgg Real        : %5.3f , RMS : %5.3f \n", fhRe1[0]->GetMean(),   fhRe1[0]->GetRMS() ) ;
 651
 652   char nameIM[128];
 653   sprintf(nameIM,"AliAnaPi0_%s_cPt",fCalorimeter.Data());
 654   TCanvas  * cIM = new TCanvas(nameIM, "", 400, 10, 600, 700) ;
 655   cIM->Divide(2, 2);
 656
 657   cIM->cd(1) ;
 658   //gPad->SetLogy();
 659   TH1D * hIMAllPt = (TH1D*) fhRe1[0]->ProjectionZ();
 660   hIMAllPt->SetLineColor(2);
 661   hIMAllPt->SetTitle("No cut on  p_{T, #gamma#gamma} ");
 662   hIMAllPt->Draw();
 663
 664   cIM->cd(2) ;
 665   TH3F * hRe1Pt5 = (TH3F*)fhRe1[0]->Clone("IMPt5");
 666   hRe1Pt5->GetXaxis()->SetRangeUser(0,5);
 667   TH1D * hIMPt5 = (TH1D*) hRe1Pt5->Project3D("z");
 668   hIMPt5->SetLineColor(2);
 669   hIMPt5->SetTitle("0 < p_{T, #gamma#gamma} < 5 GeV/c");
 670   hIMPt5->Draw();
 671
 672   cIM->cd(3) ;
 673   TH3F * hRe1Pt10 =  (TH3F*)fhRe1[0]->Clone("IMPt10");
 674   hRe1Pt10->GetXaxis()->SetRangeUser(5,10);
 675   TH1D * hIMPt10 = (TH1D*) hRe1Pt10->Project3D("z");
 676   hIMPt10->SetLineColor(2);
 677   hIMPt10->SetTitle("5 < p_{T, #gamma#gamma} < 10 GeV/c");
 678   hIMPt10->Draw();
 679
 680   cIM->cd(4) ;
 681   TH3F * hRe1Pt20 =  (TH3F*)fhRe1[0]->Clone("IMPt20");
 682   hRe1Pt20->GetXaxis()->SetRangeUser(10,20);
 683   TH1D * hIMPt20 = (TH1D*) hRe1Pt20->Project3D("z");
 684   hIMPt20->SetLineColor(2);
 685   hIMPt20->SetTitle("10 < p_{T, #gamma#gamma} < 20 GeV/c");
 686   hIMPt20->Draw();
 687
 688   char nameIMF[128];
 689   sprintf(nameIMF,"AliAnaPi0_%s_Mgg.eps",fCalorimeter.Data());
 690   cIM->Print(nameIMF);
 691
 692   char namePt[128];
 693   sprintf(namePt,"AliAnaPi0_%s_cPt",fCalorimeter.Data());
 694   TCanvas  * cPt = new TCanvas(namePt, "", 400, 10, 600, 700) ;
 695   cPt->Divide(2, 2);
 696
 697   cPt->cd(1) ;
 698   //gPad->SetLogy();
 699   TH1D * hPt = (TH1D*) fhRe1[0]->Project3D("x");
 700   hPt->SetLineColor(2);
 701   hPt->SetTitle("No cut on  M_{#gamma#gamma} ");
 702   hPt->Draw();
 703
 704   cPt->cd(2) ;
 705   TH3F * hRe1IM1 = (TH3F*)fhRe1[0]->Clone("PtIM1");
 706   hRe1IM1->GetZaxis()->SetRangeUser(0.05,0.21);
 707   TH1D * hPtIM1 = (TH1D*) hRe1IM1->Project3D("x");
 708   hPtIM1->SetLineColor(2);
 709   hPtIM1->SetTitle("0.05 < M_{#gamma#gamma} < 0.21 GeV/c^{2}");
 710   hPtIM1->Draw();
 711
 712   cPt->cd(3) ;
 713   TH3F * hRe1IM2 = (TH3F*)fhRe1[0]->Clone("PtIM2");
 714   hRe1IM2->GetZaxis()->SetRangeUser(0.09,0.17);
 715   TH1D * hPtIM2 = (TH1D*) hRe1IM2->Project3D("x");
 716   hPtIM2->SetLineColor(2);
 717   hPtIM2->SetTitle("0.09 < M_{#gamma#gamma} < 0.17 GeV/c^{2}");
 718   hPtIM2->Draw();
 719
 720   cPt->cd(4) ;
 721   TH3F * hRe1IM3 = (TH3F*)fhRe1[0]->Clone("PtIM3");
 722   hRe1IM3->GetZaxis()->SetRangeUser(0.11,0.15);
 723   TH1D * hPtIM3 = (TH1D*) hRe1IM1->Project3D("x");
 724   hPtIM3->SetLineColor(2);
 725   hPtIM3->SetTitle("0.11 < M_{#gamma#gamma} < 0.15 GeV/c^{2}");
 726   hPtIM3->Draw();
 727
 728   char namePtF[128];
 729   sprintf(namePtF,"AliAnaPi0_%s_Pt.eps",fCalorimeter.Data());
 730   cPt->Print(namePtF);
 731
 732
 733   char line[1024] ;
 734   sprintf(line, ".!tar -zcf %s_%s.tar.gz *.eps", GetName(),fCalorimeter.Data()) ;
 735   gROOT->ProcessLine(line);
 736   sprintf(line, ".!rm -fR AliAnaPi0_%s*.eps",fCalorimeter.Data());
 737   gROOT->ProcessLine(line);
 738
 739   printf(" AliAnaPi0::Terminate() - !! All the eps files are in %s_%s.tar.gz !!!\n", GetName(), fCalorimeter.Data());
 740
 741 }
 742
 743
 744
 745
 746