PWG3/vertexingHF/AliCFTaskForDStarAnalysis.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-2009, 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 //-----------------------------------------------------------------------
  17 //   Class for DStar corrections:
  18 //
  19 //   The D0 cutting varibles position in the container and container
  20 //   binning method from a C.Zampolli example
  21 //   In this way a simple comparison between D0 and D0 from D* is possible.
  22 //
  23 //-----------------------------------------------------------------------
  24 // Author : A.Grelli, Utrecht University
  25 //
  26 //         a.grelli@uu.nl
  27 //-----------------------------------------------------------------------
  28
  29 #include <TCanvas.h>
  30 #include <TParticle.h>
  31 #include <TDatabasePDG.h>
  32 #include <TH1I.h>
  33 #include <TStyle.h>
  34 #include <TFile.h>
  35
  36 #include "AliCFTaskForDStarAnalysis.h"
  37 #include "AliStack.h"
  38 #include "AliMCEvent.h"
  39 #include "AliCFManager.h"
  40 #include "AliCFContainer.h"
  41 #include "AliLog.h"
  42 #include "AliAnalysisManager.h"
  43 #include "AliAODHandler.h"
  44 #include "AliAODEvent.h"
  45 #include "AliAODRecoDecay.h"
  46 #include "AliAODRecoDecayHF.h"
  47 #include "AliAODRecoCascadeHF.h"
  48 #include "AliAODRecoDecayHF2Prong.h"
  49 #include "AliAODMCParticle.h"
  50 #include "AliAODMCHeader.h"
  51 #include "AliESDtrack.h"
  52 #include "TChain.h"
  53 #include "THnSparse.h"
  54 #include "TH2D.h"
  55
  56 //__________________________________________________________________________
  57 AliCFTaskForDStarAnalysis::AliCFTaskForDStarAnalysis() :
  58   AliAnalysisTaskSE(),
  59   fCFManager(0x0),
  60   fHistEventsProcessed(0x0),
  61   fCorrelation(0x0),
  62   fCountRecoDStarSel(0),
  63   fEvents(0),
  64   fMinITSClusters(5),
  65   fMinITSClustersSoft(4),
  66   fAcceptanceUnf(kTRUE)
  67 {
  68   //
  69   //Default ctor
  70   //
  71 }
  72 //___________________________________________________________________________
  73 AliCFTaskForDStarAnalysis::AliCFTaskForDStarAnalysis(const Char_t* name) :
  74   AliAnalysisTaskSE(name),
  75   fCFManager(0x0),
  76   fHistEventsProcessed(0x0),
  77   fCorrelation(0x0),
  78   fCountRecoDStarSel(0),
  79   fEvents(0),
  80   fMinITSClusters(5),
  81   fMinITSClustersSoft(4),
  82   fAcceptanceUnf(kTRUE)
  83 {
  84   //
  85   // Constructor. Initialization of Inputs and Outputs
  86   //
  87   Info("AliCFTaskForDStarAnalysis","Calling Constructor");
  88
  89   DefineOutput(1,TH1I::Class());
  90   DefineOutput(2,AliCFContainer::Class());
  91   DefineOutput(3,THnSparseD::Class());
  92 }
  93
  94 //___________________________________________________________________________
  95 AliCFTaskForDStarAnalysis& AliCFTaskForDStarAnalysis::operator=(const AliCFTaskForDStarAnalysis& c)
  96 {
  97   //
  98   // Assignment operator
  99   //
 100   if (this!=&c) {
 101     AliAnalysisTaskSE::operator=(c) ;
 102     fCFManager  = c.fCFManager;
 103     fHistEventsProcessed = c.fHistEventsProcessed;
 104   }
 105   return *this;
 106 }
 107
 108 //___________________________________________________________________________
 109 AliCFTaskForDStarAnalysis::AliCFTaskForDStarAnalysis(const AliCFTaskForDStarAnalysis& c) :
 110   AliAnalysisTaskSE(c),
 111   fCFManager(c.fCFManager),
 112   fHistEventsProcessed(c.fHistEventsProcessed),
 113   fCorrelation(c.fCorrelation),
 114   fCountRecoDStarSel(c.fCountRecoDStarSel),
 115   fEvents(c.fEvents),
 116   fMinITSClusters(c.fMinITSClusters),
 117   fMinITSClustersSoft(c.fMinITSClustersSoft),
 118   fAcceptanceUnf(c.fAcceptanceUnf)
 119 {
 120   //
 121   // Copy Constructor
 122   //
 123 }
 124
 125 //___________________________________________________________________________
 126 AliCFTaskForDStarAnalysis::~AliCFTaskForDStarAnalysis() {
 127   //
 128   //destructor
 129   //
 130   if (fCFManager)           delete fCFManager ;
 131   if (fHistEventsProcessed) delete fHistEventsProcessed ;
 132   if (fCorrelation)         delete fCorrelation ;
 133 }
 134
 135 //_________________________________________________
 136 void AliCFTaskForDStarAnalysis::UserExec(Option_t *)
 137 {
 138   //
 139   // Main loop function
 140   //
 141
 142   if (!fInputEvent) {
 143     Error("UserExec","NO EVENT FOUND!");
 144     return;
 145   }
 146
 147   AliAODEvent* aodEvent = dynamic_cast<AliAODEvent*>(fInputEvent);
 148
 149   TClonesArray *arrayDStartoD0pi=0;
 150
 151   if(!aodEvent && AODEvent() && IsStandardAOD()) {
 152     // In case there is an AOD handler writing a standard AOD, use the AOD
 153     // event in memory rather than the input (ESD) event.
 154     aodEvent = dynamic_cast<AliAODEvent*> (AODEvent());
 155     // in this case the braches in the deltaAOD (AliAOD.VertexingHF.root)
 156     // have to taken from the AOD event hold by the AliAODExtension
 157     AliAODHandler* aodHandler = (AliAODHandler*)
 158       ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 159     if(aodHandler->GetExtensions()) {
 160       AliAODExtension *ext = (AliAODExtension*)aodHandler->GetExtensions()->FindObject("AliAOD.VertexingHF.root");
 161       AliAODEvent *aodFromExt = ext->GetAOD();
 162       arrayDStartoD0pi=(TClonesArray*)aodFromExt->GetList()->FindObject("Dstar");
 163     }
 164   } else {
 165     arrayDStartoD0pi=(TClonesArray*)aodEvent->GetList()->FindObject("Dstar");
 166   }
 167
 168   if (!arrayDStartoD0pi) {
 169     AliError("Could not find array of HF vertices");
 170     return;
 171   }
 172
 173   // fix for temporary bug in ESDfilter
 174   // the AODs with null vertex pointer didn't pass the PhysSel
 175   if(!aodEvent->GetPrimaryVertex()) return;
 176
 177   fEvents++;
 178   if (fEvents%10000 ==0) AliDebug(2,Form("Event %d",fEvents));
 179
 180   fCFManager->SetRecEventInfo(aodEvent);
 181   fCFManager->SetMCEventInfo(aodEvent);
 182
 183   // event selection
 184   Double_t containerInput[15] ;
 185   Double_t containerInputMC[15] ;
 186
 187   //loop on the MC event
 188
 189   TClonesArray* mcArray = dynamic_cast<TClonesArray*>(aodEvent->FindListObject(AliAODMCParticle::StdBranchName()));
 190   if (!mcArray) {
 191     AliError("Could not find Monte-Carlo in AOD");
 192     return;
 193   }
 194
 195   AliAODMCHeader *mcHeader = dynamic_cast<AliAODMCHeader*>(aodEvent->GetList()->FindObject(AliAODMCHeader::StdBranchName()));
 196   if (!mcHeader) {
 197     AliError("Could not find MC Header in AOD");
 198     return;
 199   }
 200
 201   // AOD primary vertex
 202   AliAODVertex *vtx1 = (AliAODVertex*)aodEvent->GetPrimaryVertex();
 203   Double_t zPrimVertex = vtx1->GetZ();
 204   Double_t zMCVertex = mcHeader->GetVtxZ();
 205   Bool_t vtxFlag = kTRUE;
 206   TString title=vtx1->GetTitle();
 207   if(!title.Contains("VertexerTracks")) vtxFlag=kFALSE;
 208
 209   for (Int_t iPart=0; iPart<mcArray->GetEntriesFast(); iPart++) {
 210     AliAODMCParticle* mcPart = dynamic_cast<AliAODMCParticle*>(mcArray->At(iPart));
 211     if (!mcPart) {
 212       AliWarning("MC Particle not found in tree, skipping");
 213       continue;
 214     }
 215
 216     // check the MC-level cuts
 217     if (!fCFManager->CheckParticleCuts(0, mcPart)) continue;  // 0 stands for MC level
 218
 219     // fill the container for Gen-level selection
 220     Double_t vectorMC[9] = {9999.,9999.,9999.,9999.,9999.,9999.,9999.,9999.,9999.};
 221
 222     if (GetDStarMCParticle(mcPart, mcArray, vectorMC)){
 223
 224       containerInputMC[0] = vectorMC[0];
 225       containerInputMC[1] = vectorMC[1] ;
 226       containerInputMC[2] = vectorMC[2] ;
 227       containerInputMC[3] = vectorMC[3] ;
 228       containerInputMC[4] = vectorMC[4] ;
 229       containerInputMC[5] = vectorMC[5] ;
 230       containerInputMC[6] = 0.;
 231       containerInputMC[7] = 0.;
 232       containerInputMC[8] = 0.;
 233       containerInputMC[9] = -100000.;
 234       containerInputMC[10] = 1.01;
 235       containerInputMC[11] = vectorMC[6];
 236       containerInputMC[12] = zMCVertex;     // z vertex
 237       containerInputMC[13] = vectorMC[7];   // pt D0 pion
 238       containerInputMC[14] = vectorMC[8];   // pt D0 kaon
 239
 240       fCFManager->GetParticleContainer()->Fill(containerInputMC,kStepGenerated);
 241
 242       // check the MC-Acceptance level cuts
 243       // since standard CF functions are not applicable, using Kine Cuts on daughters
 244
 245       Int_t daughter0 = mcPart->GetDaughter(0);
 246       Int_t daughter1 = mcPart->GetDaughter(1);
 247
 248       AliDebug(2, Form("daughter0 = %d and daughter1 = %d",daughter0,daughter1));
 249
 250       //D0
 251       AliAODMCParticle* mcPartDaughter0 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter0));
 252       // Soft Pion
 253       AliAODMCParticle* mcPartDaughter1 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter1));
 254
 255       // Acceptance variables for the soft pion
 256       Double_t eta1 = mcPartDaughter1->Eta();
 257       Double_t pt1  = mcPartDaughter1->Pt();
 258
 259       Int_t daughD00 = 0;
 260       Int_t daughD01 = 0;
 261
 262       // Just to be sure to take the right particles
 263       if(TMath::Abs(mcPartDaughter0->GetPdgCode())==421){
 264         daughD00 = mcPartDaughter0->GetDaughter(0);
 265         daughD01 = mcPartDaughter0->GetDaughter(1);
 266       }else{
 267         daughD00 = mcPartDaughter1->GetDaughter(0);
 268         daughD01 = mcPartDaughter1->GetDaughter(1);
 269       }
 270
 271       // the D0 daughters
 272       AliAODMCParticle* mcD0PartDaughter0 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughD00));
 273       AliAODMCParticle* mcD0PartDaughter1 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughD01));
 274
 275       if (!mcD0PartDaughter0 || !mcD0PartDaughter1) {
 276         AliWarning("At least one D0 Daughter Particle not found in tree, but it should be, this check was already done...");
 277       }
 278
 279       // D0 daughters - needed for acceptance
 280       Double_t theD0pt0 =  mcD0PartDaughter0->Pt();
 281       Double_t theD0pt1 =  mcD0PartDaughter1->Pt();
 282       Double_t theD0eta0 = mcD0PartDaughter0->Eta();
 283       Double_t theD0eta1 = mcD0PartDaughter1->Eta();
 284
 285       // ACCEPTANCE REQUESTS ---------
 286
 287       // soft pion
 288       Bool_t daught1inAcceptance = (TMath::Abs(eta1) <= 0.9 && pt1 >= 0.05);
 289       // Do daughters
 290       Bool_t D0daught0inAcceptance = (TMath::Abs(theD0eta0) <= 0.9 && theD0pt0 >= 0.1);
 291       Bool_t D0daught1inAcceptance = (TMath::Abs(theD0eta1) <= 0.9 && theD0pt1 >= 0.1);
 292
 293       if (daught1inAcceptance && D0daught0inAcceptance && D0daught1inAcceptance) {
 294
 295         AliDebug(2, "D* Daughter particles in acceptance");
 296
 297         fCFManager->GetParticleContainer()->Fill(containerInputMC,kStepAcceptance);
 298
 299         // check on the vertex
 300         if (vtxFlag){
 301           // filling the container if the vertex is ok
 302           fCFManager->GetParticleContainer()->Fill(containerInputMC,kStepVertex) ;
 303
 304           Bool_t refitFlag = kTRUE;
 305           for (Int_t iaod =0; iaod<aodEvent->GetNumberOfTracks(); iaod++){
 306             AliAODTrack *track = (AliAODTrack*)aodEvent->GetTrack(iaod);
 307
 308             // refit only for D0 daughters
 309             if ((track->GetLabel() == daughD00) || (track->GetLabel() == daughD01)) {
 310               if(!(track->GetStatus()&AliESDtrack::kTPCrefit) || !(track->GetStatus()&AliESDtrack::kITSrefit)) {
 311                 refitFlag = kFALSE;
 312               }
 313             }
 314           }
 315           if (refitFlag){ // refit
 316
 317             fCFManager->GetParticleContainer()->Fill(containerInputMC,kStepRefit);
 318
 319           } // end of refit
 320         } // end of vertex
 321       } //end of acceptance
 322     } // end of MC D*
 323     else {
 324       AliDebug(3,"Problems in filling the container");
 325       continue;
 326     }
 327   } // end of MC loop
 328
 329   //rec
 330   AliDebug(2, Form("Found %d D* candidates",arrayDStartoD0pi->GetEntriesFast()));
 331
 332   //D* and D0 prongs needed to MatchToMC method
 333   Int_t pdgDgDStartoD0pi[2]={421,211};
 334   Int_t pdgDgD0toKpi[2]={321,211};
 335
 336   for (Int_t iDStartoD0pi = 0; iDStartoD0pi<arrayDStartoD0pi->GetEntriesFast(); iDStartoD0pi++) {
 337
 338     // D* candidates
 339     AliAODRecoCascadeHF* dstarD0pi = (AliAODRecoCascadeHF*)arrayDStartoD0pi->At(iDStartoD0pi);
 340
 341     // D0 from the reco cascade
 342     AliAODRecoDecayHF2Prong* D0particle = (AliAODRecoDecayHF2Prong*)dstarD0pi->Get2Prong();
 343     Bool_t unsetvtx=kFALSE;
 344
 345     // needed for pointing angle
 346     if(!D0particle->GetOwnPrimaryVtx()) {
 347       D0particle->SetOwnPrimaryVtx(vtx1);
 348       unsetvtx=kTRUE;
 349     }
 350
 351     // find associated MC particle for D* ->D0toKpi
 352     Int_t mcLabel = dstarD0pi->MatchToMC(413,421,pdgDgDStartoD0pi,pdgDgD0toKpi,mcArray);
 353
 354     // find D0->Kpi ... needed in the following
 355     Int_t mcD0Label = D0particle->MatchToMC(421,mcArray,2,pdgDgD0toKpi);
 356
 357     if (mcLabel == -1 || mcD0Label ==-1)
 358       {
 359         AliDebug(2,"No MC particle found");
 360       }
 361     else {
 362
 363       // the D* and the D0 in MC
 364       AliAODMCParticle* mcVtxHFDStar = (AliAODMCParticle*)mcArray->At(mcLabel);
 365       AliAODMCParticle* mcVtxHFD0Kpi = (AliAODMCParticle*)mcArray->At(mcD0Label);
 366
 367       if (!mcVtxHFD0Kpi || !mcVtxHFDStar) {
 368         AliWarning("Could not find associated MC D0 and/or D* in AOD MC tree");
 369         continue;
 370       }
 371
 372       // soft pion
 373       AliAODTrack *track2 = (AliAODTrack*)dstarD0pi->GetBachelor();
 374
 375       //D0tokpi
 376       AliAODTrack *track0 = (AliAODTrack*)D0particle->GetDaughter(0);
 377       AliAODTrack *track1 = (AliAODTrack*)D0particle->GetDaughter(1);
 378
 379       // check if associated MC v0 passes the cuts
 380       if (!fCFManager->CheckParticleCuts(0 ,mcVtxHFDStar)) {
 381         AliDebug(2, "Skipping the particles due to cuts");
 382         continue;
 383       }
 384
 385       // fill the container...
 386       Double_t pt = TMath::Sqrt(TMath::Power(D0particle->Pt(),2)+TMath::Power(track2->Pt(),2));
 387       Double_t rapidity = dstarD0pi->YDstar();
 388       Double_t cosThetaStar = 9999.;
 389       Double_t pTpi  = 0.;
 390       Double_t pTK   = 0.;
 391       Double_t dca   = (D0particle->GetDCA())*1E4;
 392       Double_t d0pi  = 0.;
 393       Double_t d0K   = 0.;
 394       Double_t d0xd0 = (D0particle->Prodd0d0())*1E8;
 395       Double_t cosPointingAngle = D0particle->CosPointingAngle();
 396       Double_t phi = D0particle->Phi();
 397
 398       // Select D0 cutting variables
 399       Int_t pdgCode = mcVtxHFD0Kpi->GetPdgCode();
 400
 401       // D0 related variables
 402       if (pdgCode > 0){
 403
 404         cosThetaStar = D0particle->CosThetaStarD0();
 405         pTpi    = D0particle->PtProng(0);
 406         pTK     = D0particle->PtProng(1);
 407         d0pi    = (D0particle->Getd0Prong(0))*1E4;
 408         d0K     = (D0particle->Getd0Prong(1))*1E4;
 409
 410       }
 411       else {
 412
 413         cosThetaStar = D0particle->CosThetaStarD0bar();
 414         pTpi    = D0particle->PtProng(1);
 415         pTK     = D0particle->PtProng(0);
 416         d0pi    = (D0particle->Getd0Prong(1))*1E4;
 417         d0K     = (D0particle->Getd0Prong(0))*1E4;
 418
 419       }
 420
 421       // ct of the D0 from D*
 422       Double_t cT = D0particle->CtD0();
 423
 424       containerInput[0]  = pt;
 425       containerInput[1]  = rapidity;
 426       containerInput[2]  = cosThetaStar;
 427       containerInput[3]  = track2->Pt();
 428       containerInput[4]  = D0particle->Pt();
 429       containerInput[5]  = cT*1.E4;  // in micron
 430       containerInput[6]  = dca;  // in micron
 431       containerInput[7]  = d0pi;  // in micron
 432       containerInput[8]  = d0K;  // in micron
 433       containerInput[9]  = d0xd0;  // in micron^2
 434       containerInput[10] = cosPointingAngle;  // in micron
 435       containerInput[11] = phi;
 436       containerInput[12] = zPrimVertex;    // z of reconstructed of primary vertex
 437       containerInput[13] = pTpi;  // D0 pion
 438       containerInput[14] = pTK;   // D0 kaon
 439
 440       fCFManager->GetParticleContainer()->Fill(containerInput,kStepReconstructed) ;
 441
 442       // refit in ITS and TPC for D0 daughters
 443       if((!(track0->GetStatus()&AliESDtrack::kTPCrefit)) || (!(track1->GetStatus()&AliESDtrack::kTPCrefit)) || (!(track0->GetStatus()&AliESDtrack::kITSrefit)) || (!(track1->GetStatus()&AliESDtrack::kITSrefit))) {
 444         continue;
 445       }
 446
 447       // reft in ITS for soft pion
 448       if((!(track2->GetStatus()&AliESDtrack::kITSrefit))) {
 449         continue;
 450       }
 451
 452       // cut in acceptance for the soft pion and for the D0 daughters
 453       Bool_t acceptanceProng0 = (TMath::Abs(D0particle->EtaProng(0))<= 0.9 && D0particle->PtProng(0) >= 0.1);
 454       Bool_t acceptanceProng1 = (TMath::Abs(D0particle->EtaProng(1))<= 0.9 && D0particle->PtProng(1) >= 0.1);
 455
 456       // soft pion acceptance ... is it fine 0.9?????
 457       Bool_t acceptanceProng2 = (TMath::Abs(track2->Eta())<= 0.9 && track2->Pt() >= 0.05);
 458
 459       if (acceptanceProng0 && acceptanceProng1 && acceptanceProng2) {
 460         AliDebug(2,"D* reco daughters in acceptance");
 461         fCFManager->GetParticleContainer()->Fill(containerInput,kStepRecoAcceptance) ;
 462
 463         if(fAcceptanceUnf){
 464           Double_t fill[4]; //fill response matrix
 465
 466           // dimensions 0&1 : pt,eta (Rec)
 467           fill[0] = pt ;
 468           fill[1] = rapidity;
 469           // dimensions 2&3 : pt,eta (MC)
 470           fill[2] =  mcVtxHFDStar->Pt();
 471           fill[3] =  mcVtxHFDStar->Y();
 472           fCorrelation->Fill(fill);
 473         }
 474
 475         // cut on the min n. of clusters in ITS for the D0 and soft pion
 476         Int_t ncls0=0,ncls1=0,ncls2=0;
 477         for(Int_t l=0;l<6;l++) {
 478           if(TESTBIT(track0->GetITSClusterMap(),l)) ncls0++;
 479           if(TESTBIT(track1->GetITSClusterMap(),l)) ncls1++;
 480           if(TESTBIT(track2->GetITSClusterMap(),l)) ncls2++;
 481         }
 482         // see AddTask for soft pion ITS clusters request
 483         AliDebug(2, Form("n clusters = %d", ncls0));
 484
 485         if (ncls0 >= fMinITSClusters && ncls1 >= fMinITSClusters && ncls2>= fMinITSClustersSoft) {
 486           fCFManager->GetParticleContainer()->Fill(containerInput,kStepRecoITSClusters) ;
 487
 488           // D0 cuts optimized for D* analysis
 489           Double_t cuts[7] = {9999999., 1.1, 0., 9999999., 9999999., 0.,0.027};
 490
 491           // needed for cuts
 492           Double_t theD0pt = D0particle->Pt();
 493
 494           if (theD0pt <= 1){ // first bin not optimized
 495             cuts[0] = 400;
 496             cuts[1] = 0.8;
 497             cuts[2] = 0.21;
 498             cuts[3] = 500;
 499             cuts[4] = 500;
 500             cuts[5] = -20000;
 501             cuts[6] = 0.6;
 502           }
 503           else if (theD0pt > 1 && theD0pt <= 2){
 504             cuts[0] = 200;
 505             cuts[1] = 0.7;
 506             cuts[2] = 0.8;
 507             cuts[3] = 210;
 508             cuts[4] = 210;
 509             cuts[5] = -20000;
 510             cuts[6] = 0.9;
 511           }
 512           else if (theD0pt > 2 && theD0pt <= 3){
 513             cuts[0] = 400;
 514             cuts[1] = 0.8;
 515             cuts[2] = 0.8;
 516             cuts[3] = 420;
 517             cuts[4] = 350;
 518             cuts[5] = -8500;
 519             cuts[6] = 0.9;
 520           }
 521           else if (theD0pt > 3 && theD0pt <= 5){
 522             cuts[0] = 160;
 523             cuts[1] = 1.0;
 524             cuts[2] = 1.2;
 525             cuts[3] = 560;
 526             cuts[4] = 420;
 527             cuts[5] = -8500;
 528             cuts[6] = 0.9;
 529           }
 530           else if (theD0pt > 5){
 531             cuts[0] = 800;
 532             cuts[1] = 1.0;
 533             cuts[2] = 1.2;
 534             cuts[3] = 700;
 535             cuts[4] = 700;
 536             cuts[5] = 10000;
 537             cuts[6] = 0.9;
 538           }
 539           if (dca < cuts[0]
 540               && TMath::Abs(cosThetaStar) < cuts[1]
 541               && pTpi > cuts[2]
 542               && pTK > cuts[2]
 543               && TMath::Abs(d0pi) < cuts[3]
 544               && TMath::Abs(d0K) < cuts[4]
 545               && d0xd0 < cuts[5]
 546               && cosPointingAngle > cuts[6]
 547             ){
 548
 549             AliDebug(2,"Particle passed D* selection cuts");
 550             fCFManager->GetParticleContainer()->Fill(containerInput,kStepRecoCuts) ;
 551
 552             if(!fAcceptanceUnf){ // unfolding
 553
 554               Double_t fill[4]; //fill response matrix
 555
 556               // dimensions 0&1 : pt,eta (Rec)
 557               fill[0] = pt ;
 558               fill[1] = rapidity;
 559               // dimensions 2&3 : pt,eta (MC)
 560               fill[2] =  mcVtxHFDStar->Pt();
 561               fill[3] =  mcVtxHFDStar->Y();
 562
 563               fCorrelation->Fill(fill);
 564             }
 565           }
 566         }
 567       }
 568     }
 569     if(unsetvtx) D0particle->UnsetOwnPrimaryVtx();
 570   } // end loop on D*->Kpipi
 571
 572   fHistEventsProcessed->Fill(0);
 573
 574   PostData(1,fHistEventsProcessed) ;
 575   PostData(2,fCFManager->GetParticleContainer()) ;
 576   PostData(3,fCorrelation) ;
 577 }
 578
 579
 580 //___________________________________________________________________________
 581 void AliCFTaskForDStarAnalysis::Terminate(Option_t*)
 582 {
 583   // The Terminate()
 584   AliAnalysisTaskSE::Terminate();
 585
 586   // draw correlation matrix
 587   AliCFContainer *cont= dynamic_cast<AliCFContainer*> (GetOutputData(2));
 588   if(!cont) {
 589     printf("CONTAINER NOT FOUND\n");
 590     return;
 591   }
 592 }
 593
 594 //___________________________________________________________________________
 595 void AliCFTaskForDStarAnalysis::UserCreateOutputObjects() {
 596
 597   //
 598   // useroutput
 599   //
 600
 601   Info("UserCreateOutputObjects","CreateOutputObjects of task %s\n", GetName());
 602
 603   //slot #1
 604   OpenFile(1);
 605   fHistEventsProcessed = new TH1I("CFDSchist0","",1,0,1) ;
 606 }
 607
 608 //________________________________________________________________________________
 609 Bool_t AliCFTaskForDStarAnalysis::GetDStarMCParticle(AliAODMCParticle* mcPart, TClonesArray* mcArray, Double_t* vectorMC)const {
 610
 611   //
 612   // fill the D* and D0 MC container
 613   //
 614
 615   Bool_t isDStar = kFALSE;
 616
 617   if(TMath::Abs(mcPart->GetPdgCode())!=413) return isDStar;
 618
 619   // getting the daughters
 620   Int_t daughter0 = mcPart->GetDaughter(0);
 621   Int_t daughter1 = mcPart->GetDaughter(1);
 622
 623   AliDebug(2, Form("daughter0 = %d and daughter1 = %d",daughter0,daughter1));
 624   if (daughter0 == 0 || daughter1 == 0) {
 625     AliDebug(2, "Error! the D* MC doesn't have correct daughters!!");
 626     return isDStar;
 627   }
 628
 629   if (TMath::Abs(daughter1 - daughter0) != 1) { // should be everytime true - see PDGdatabooklet
 630     AliDebug(2, "The D* MC doesn't come from a 2-prong decay, skipping!!");
 631     return isDStar;
 632   }
 633
 634   AliAODMCParticle* mcPartDaughter0 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter0));
 635   AliAODMCParticle* mcPartDaughter1 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter1));
 636   if (!mcPartDaughter0 || !mcPartDaughter1) {
 637     AliWarning("D*: At least one Daughter Particle not found in tree, skipping");
 638     return isDStar;
 639   }
 640
 641   if (!(TMath::Abs(mcPartDaughter0->GetPdgCode())==421 &&
 642         TMath::Abs(mcPartDaughter1->GetPdgCode())==211) &&
 643       !(TMath::Abs(mcPartDaughter0->GetPdgCode())==211 &&
 644         TMath::Abs(mcPartDaughter1->GetPdgCode())==421)) {
 645     AliDebug(2, "The D* MC doesn't come from a Kpi decay, skipping!!");
 646     return isDStar;
 647   }
 648
 649   Double_t vtx2daughter0[3] = {0,0,0};   // secondary vertex from daughter 0
 650   Double_t vtx2daughter1[3] = {0,0,0};   // secondary vertex from daughter 1
 651
 652   // getting vertex from daughters
 653   mcPartDaughter0->XvYvZv(vtx2daughter0);
 654   mcPartDaughter1->XvYvZv(vtx2daughter1);
 655
 656   // check if the secondary vertex is the same for both
 657   if (vtx2daughter0[0] != vtx2daughter1[0] && vtx2daughter0[1] != vtx2daughter1[1] && vtx2daughter0[2] != vtx2daughter1[2]) {
 658     AliError("The D* daughters have different secondary vertex, skipping the track");
 659     return isDStar;
 660   }
 661
 662   AliAODMCParticle* neutralDaugh = mcPartDaughter0;
 663
 664   Double_t VectorD0[2] ={0.,0.};
 665
 666   if (!EvaluateIfD0toKpi(neutralDaugh,mcArray,VectorD0)) {
 667     AliDebug(2, "Error! the D0 MC doesn't have correct daughters!!");
 668     return isDStar;
 669   }
 670   // get the pT of the daughters
 671
 672   Double_t pTpi = 0.;
 673   Double_t pTD0 = 0.;
 674
 675   if (TMath::Abs(mcPartDaughter0->GetPdgCode()) == 211) {
 676     pTpi = mcPartDaughter0->Pt();
 677     pTD0 = mcPartDaughter1->Pt();
 678   }
 679   else {
 680     pTpi = mcPartDaughter1->Pt();
 681     pTD0 = mcPartDaughter0->Pt();
 682   }
 683
 684   vectorMC[0] = mcPart->Pt();
 685   vectorMC[1] = mcPart->Y() ;
 686   vectorMC[2] = 0;
 687   vectorMC[3] = pTpi ;
 688   vectorMC[4] = pTD0 ;
 689   vectorMC[5] = 0;
 690   vectorMC[6] = mcPart->Phi() ;
 691   vectorMC[7] = VectorD0[0] ;
 692   vectorMC[8] = VectorD0[1] ;
 693
 694   isDStar = kTRUE;
 695
 696   return isDStar;
 697 }
 698 //________________________________________________________________________________________________
 699
 700 Bool_t AliCFTaskForDStarAnalysis::EvaluateIfD0toKpi(AliAODMCParticle* neutralDaugh, TClonesArray* mcArray, Double_t* VectorD0)const{
 701
 702   //
 703   // chack wether D0 is decaing into kpi
 704   //
 705
 706   Bool_t isHadronic = kFALSE;
 707
 708   Int_t daughterD00 = neutralDaugh->GetDaughter(0);
 709   Int_t daughterD01 = neutralDaugh->GetDaughter(1);
 710
 711   AliDebug(2, Form("daughter0 = %d and daughter1 = %d",daughterD00,daughterD01));
 712   if (daughterD00 == 0 || daughterD01 == 0) {
 713     AliDebug(2, "Error! the D0 MC doesn't have correct daughters!!");
 714     return isHadronic;
 715   }
 716
 717   if (TMath::Abs(daughterD01 - daughterD00) != 1) { // should be everytime true - see PDGdatabooklet
 718     AliDebug(2, "The D0 MC doesn't come from a 2-prong decay, skipping!!");
 719     return isHadronic;
 720   }
 721
 722   AliAODMCParticle* mcPartDaughterD00 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughterD00));
 723   AliAODMCParticle* mcPartDaughterD01 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughterD01));
 724   if (!mcPartDaughterD00 || !mcPartDaughterD01) {
 725     AliWarning("D0 MC analysis: At least one Daughter Particle not found in tree, skipping");
 726     return isHadronic;
 727   }
 728
 729   if (!(TMath::Abs(mcPartDaughterD00->GetPdgCode())==321 &&
 730         TMath::Abs(mcPartDaughterD01->GetPdgCode())==211) &&
 731       !(TMath::Abs(mcPartDaughterD00->GetPdgCode())==211 &&
 732         TMath::Abs(mcPartDaughterD01->GetPdgCode())==321)) {
 733     AliDebug(2, "The D0 MC doesn't come from a Kpi decay, skipping!!");
 734     return isHadronic;
 735   }
 736
 737   Double_t pTD0pi = 0;
 738   Double_t pTD0K = 0;
 739
 740
 741   if (TMath::Abs(mcPartDaughterD00->GetPdgCode()) == 211) {
 742     pTD0pi = mcPartDaughterD00->Pt();
 743     pTD0K = mcPartDaughterD01->Pt();
 744   }
 745   else {
 746     pTD0pi = mcPartDaughterD01->Pt();
 747     pTD0K  = mcPartDaughterD00->Pt();
 748   }
 749
 750   isHadronic = kTRUE;
 751
 752   VectorD0[0] = pTD0pi;
 753   VectorD0[1] = pTD0K;
 754
 755   return isHadronic;
 756
 757 }