PWGJE/FlavourJetTasks/AliAnalysisTaskFlavourJetCorrelations.cxx

   1 /**************************************************************************
   2 * Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
   3 *                                                                        *
   4 * Author: The ALICE Off-line Project.                                    *
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   6 *                                                                        *
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  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 //  Analysis Taks for reconstructed particle correlation
  18 //  (first implementation done for D mesons) with jets
  19 //  (use the so called Emcal framework)
  20 //
  21 //-----------------------------------------------------------------------
  22 // Authors:
  23 // C. Bianchin (Utrecht University) chiara.bianchin@cern.ch
  24 // A. Grelli (Utrecht University) a.grelli@uu.nl
  25 // X. Zhang (LBNL)  XMZhang@lbl.gov
  26 //-----------------------------------------------------------------------
  27
  28 #include <TDatabasePDG.h>
  29 #include <TParticle.h>
  30 #include "TROOT.h"
  31 #include <TH3F.h>
  32 #include <THnSparse.h>
  33
  34 #include "AliAnalysisTaskFlavourJetCorrelations.h"
  35 #include "AliAODMCHeader.h"
  36 #include "AliAODHandler.h"
  37 #include "AliAnalysisManager.h"
  38 #include "AliLog.h"
  39 #include "AliEmcalJet.h"
  40 #include "AliJetContainer.h"
  41 #include "AliAODRecoDecay.h"
  42 #include "AliAODRecoCascadeHF.h"
  43 #include "AliAODRecoDecayHF2Prong.h"
  44 #include "AliESDtrack.h"
  45 #include "AliAODMCParticle.h"
  46 #include "AliPicoTrack.h"
  47 #include "AliRDHFCutsD0toKpi.h"
  48 #include "AliRDHFCutsDStartoKpipi.h"
  49
  50 ClassImp(AliAnalysisTaskFlavourJetCorrelations)
  51
  52
  53 //_______________________________________________________________________________
  54
  55 AliAnalysisTaskFlavourJetCorrelations::AliAnalysisTaskFlavourJetCorrelations() :
  56 AliAnalysisTaskEmcalJet("",kFALSE),
  57 fUseMCInfo(kTRUE),
  58 fUseReco(kTRUE),
  59 fCandidateType(),
  60 fPDGmother(),
  61 fNProngs(),
  62 fPDGdaughters(),
  63 fBranchName(),
  64 fmyOutput(0),
  65 fCuts(0),
  66 fMinMass(),
  67 fMaxMass(),
  68 fJetArrName(0),
  69 fCandArrName(0),
  70 fLeadingJetOnly(kFALSE),
  71 fJetRadius(0),
  72 fCandidateArray(0),
  73 fSideBandArray(0)
  74 {
  75    //
  76    // Default ctor
  77    //
  78    //SetMakeGeneralHistograms(kTRUE);
  79
  80 }
  81
  82 //_______________________________________________________________________________
  83
  84 AliAnalysisTaskFlavourJetCorrelations::AliAnalysisTaskFlavourJetCorrelations(const Char_t* name, AliRDHFCuts* cuts,ECandidateType candtype) :
  85 AliAnalysisTaskEmcalJet(name,kFALSE),
  86 fUseMCInfo(kTRUE),
  87 fUseReco(kTRUE),
  88 fCandidateType(),
  89 fPDGmother(),
  90 fNProngs(),
  91 fPDGdaughters(),
  92 fBranchName(),
  93 fmyOutput(0),
  94 fCuts(0),
  95 fMinMass(),
  96 fMaxMass(),
  97 fJetArrName(0),
  98 fCandArrName(0),
  99 fLeadingJetOnly(kFALSE),
 100 fJetRadius(0),
 101 fCandidateArray(0),
 102 fSideBandArray(0)
 103 {
 104    //
 105    // Constructor. Initialization of Inputs and Outputs
 106    //
 107
 108    Info("AliAnalysisTaskFlavourJetCorrelations","Calling Constructor");
 109    fCuts=cuts;
 110    fCandidateType=candtype;
 111    const Int_t nptbins=fCuts->GetNPtBins();
 112    Float_t defaultSigmaD013[13]={0.012, 0.012, 0.012, 0.015, 0.015,0.018,0.018,0.020,0.020,0.030,0.030,0.037,0.040};
 113
 114    switch(fCandidateType){
 115    case 0:
 116       fPDGmother=421;
 117       fNProngs=2;
 118       fPDGdaughters[0]=211;//pi
 119       fPDGdaughters[1]=321;//K
 120       fPDGdaughters[2]=0; //empty
 121       fPDGdaughters[3]=0; //empty
 122       fBranchName="D0toKpi";
 123       fCandArrName="D0";
 124       break;
 125    case 1:
 126       fPDGmother=413;
 127       fNProngs=3;
 128       fPDGdaughters[1]=211;//pi soft
 129       fPDGdaughters[0]=421;//D0
 130       fPDGdaughters[2]=211;//pi fromD0
 131       fPDGdaughters[3]=321; // K from D0
 132       fBranchName="Dstar";
 133       fCandArrName="Dstar";
 134
 135       if(nptbins<=13){
 136          for(Int_t ipt=0;ipt<nptbins;ipt++) fSigmaD0[ipt]= defaultSigmaD013[ipt];
 137       } else {
 138          AliFatal(Form("Default sigma D0 not enough for %d pt bins, use SetSigmaD0ForDStar to set them",nptbins));
 139       }
 140       break;
 141    default:
 142       printf("%d not accepted!!\n",fCandidateType);
 143       break;
 144    }
 145
 146    if(fCandidateType==kD0toKpi)SetMassLimits(0.15,fPDGmother);
 147    if(fCandidateType==kDstartoKpipi) SetMassLimits(0.015, fPDGmother);
 148
 149    DefineInput(1, TClonesArray::Class());
 150    DefineInput(2, TClonesArray::Class());
 151
 152    DefineOutput(1,TList::Class()); // histos
 153    DefineOutput(2,AliRDHFCuts::Class()); // my cuts
 154
 155 }
 156
 157 //_______________________________________________________________________________
 158
 159 AliAnalysisTaskFlavourJetCorrelations::~AliAnalysisTaskFlavourJetCorrelations() {
 160    //
 161    // destructor
 162    //
 163
 164    Info("~AliAnalysisTaskFlavourJetCorrelations","Calling Destructor");
 165
 166    delete fmyOutput;
 167    delete fCuts;
 168
 169 }
 170
 171 //_______________________________________________________________________________
 172
 173 void AliAnalysisTaskFlavourJetCorrelations::Init(){
 174    //
 175    // Initialization
 176    //
 177
 178    if(fDebug > 1) printf("AnalysisTaskRecoJetCorrelations::Init() \n");
 179    switch(fCandidateType){
 180    case 0:
 181       {
 182          AliRDHFCutsD0toKpi* copyfCuts=new AliRDHFCutsD0toKpi(*(static_cast<AliRDHFCutsD0toKpi*>(fCuts)));
 183          copyfCuts->SetName("AnalysisCutsDzero");
 184          // Post the data
 185          PostData(2,copyfCuts);
 186       }
 187       break;
 188    case 1:
 189       {
 190          AliRDHFCutsDStartoKpipi* copyfCuts=new AliRDHFCutsDStartoKpipi(*(static_cast<AliRDHFCutsDStartoKpipi*>(fCuts)));
 191          copyfCuts->SetName("AnalysisCutsDStar");
 192          // Post the cuts
 193          PostData(2,copyfCuts);
 194       }
 195       break;
 196    default:
 197       return;
 198    }
 199
 200    return;
 201 }
 202
 203 //_______________________________________________________________________________
 204
 205 void AliAnalysisTaskFlavourJetCorrelations::UserCreateOutputObjects() {
 206    // output
 207    Info("UserCreateOutputObjects","CreateOutputObjects of task %s\n", GetName());
 208    fmyOutput = new TList();
 209    fmyOutput->SetOwner();
 210    fmyOutput->SetName("pippo");
 211    // define histograms
 212    DefineHistoForAnalysis();
 213    PostData(1,fmyOutput);
 214
 215    return;
 216 }
 217
 218 //_______________________________________________________________________________
 219
 220 void AliAnalysisTaskFlavourJetCorrelations::UserExec(Option_t *)
 221 {
 222    // user exec
 223    if (!fInitialized){
 224       AliAnalysisTaskEmcalJet::ExecOnce();
 225    }
 226
 227    // Load the event
 228    AliAODEvent* aodEvent = dynamic_cast<AliAODEvent*>(fInputEvent);
 229
 230    TClonesArray *arrayDStartoD0pi=0;
 231    TClonesArray *trackArr = 0;
 232
 233    if (!aodEvent && AODEvent() && IsStandardAOD()) {
 234
 235       // In case there is an AOD handler writing a standard AOD, use the AOD
 236       // event in memory rather than the input (ESD) event.
 237       aodEvent = dynamic_cast<AliAODEvent*> (AODEvent());
 238
 239       // in this case the braches in the deltaAOD (AliAOD.VertexingHF.root)
 240       // have to taken from the AOD event hold by the AliAODExtension
 241       AliAODHandler* aodHandler = (AliAODHandler*)
 242       ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 243       if(aodHandler->GetExtensions()) {
 244          AliAODExtension *ext = (AliAODExtension*)aodHandler->GetExtensions()->FindObject("AliAOD.VertexingHF.root");
 245          AliAODEvent *aodFromExt = ext->GetAOD();
 246          arrayDStartoD0pi=(TClonesArray*)aodFromExt->GetList()->FindObject(fBranchName.Data());
 247       }
 248    } else {
 249       arrayDStartoD0pi=(TClonesArray*)aodEvent->GetList()->FindObject(fBranchName.Data());
 250    }
 251
 252    if (!arrayDStartoD0pi) {
 253       AliInfo(Form("Could not find array %s, skipping the event",fBranchName.Data()));
 254       //  return;
 255    } else AliDebug(2, Form("Found %d vertices",arrayDStartoD0pi->GetEntriesFast()));
 256
 257    TClonesArray* mcArray = 0x0;
 258    if (fUseMCInfo) {
 259       mcArray = dynamic_cast<TClonesArray*>(aodEvent->FindListObject(AliAODMCParticle::StdBranchName()));
 260       if (!mcArray) {
 261          printf("AliAnalysisTaskSEDStarSpectra::UserExec: MC particles not found!\n");
 262          return;
 263       }
 264    }
 265
 266    //retrieve jets
 267    trackArr = dynamic_cast<TClonesArray*>(InputEvent()->FindListObject("PicoTracks"));
 268    //clusArr = dynamic_cast<TClonesArray*>(InputEvent()->FindListObject("CaloClustersCorr"));
 269    //jetArr = dynamic_cast<TClonesArray*>(InputEvent()->FindListObject(fJetArrName));
 270    fJetRadius=GetJetContainer(0)->GetJetRadius();
 271
 272    if(!trackArr){
 273       AliInfo(Form("Could not find the track array\n"));
 274       return;
 275    }
 276
 277
 278    if (!fCandidateArray) fCandidateArray = dynamic_cast<TClonesArray*>(GetInputData(1));
 279    if (fCandidateType==1 && !fSideBandArray) fSideBandArray = dynamic_cast<TClonesArray*>(GetInputData(2));
 280
 281    Printf("ncandidates found %d",fCandidateArray->GetEntriesFast());
 282
 283    //Histograms
 284    TH1I* hstat=(TH1I*)fmyOutput->FindObject("hstat");
 285    TH1F* hPtJetTrks=(TH1F*)fmyOutput->FindObject("hPtJetTrks");
 286    TH1F* hPhiJetTrks=(TH1F*)fmyOutput->FindObject("hPhiJetTrks");
 287    TH1F* hEtaJetTrks=(TH1F*)fmyOutput->FindObject("hEtaJetTrks");
 288    TH1F* hEjetTrks=(TH1F*)fmyOutput->FindObject("hEjetTrks");
 289    TH1F* hPtJet=(TH1F*)fmyOutput->FindObject("hPtJet");
 290    TH1F* hPhiJet=(TH1F*)fmyOutput->FindObject("hPhiJet");
 291    TH1F* hEtaJet=(TH1F*)fmyOutput->FindObject("hEtaJet");
 292    TH1F* hEjet=(TH1F*)fmyOutput->FindObject("hEjet");
 293    TH1F* hNtrArr=(TH1F*)fmyOutput->FindObject("hNtrArr");
 294    TH1F* hNJetPerEv=(TH1F*)fmyOutput->FindObject("hNJetPerEv");
 295    TH1F* hdeltaRJetTracks=(TH1F*)fmyOutput->FindObject("hdeltaRJetTracks");
 296    TH1F* hNDPerEvNoJet=(TH1F*)fmyOutput->FindObject("hNDPerEvNoJet");
 297    TH1F* hptDPerEvNoJet=(TH1F*)fmyOutput->FindObject("hptDPerEvNoJet");
 298    TH1F* hNJetPerEvNoD=(TH1F*)fmyOutput->FindObject("hNJetPerEvNoD");
 299    TH1F* hPtJetPerEvNoD=(TH1F*)fmyOutput->FindObject("hPtJetPerEvNoD");
 300    THnSparseF* hnspDstandalone=(THnSparseF*)fmyOutput->FindObject("hsDstandalone");
 301
 302    hstat->Fill(0);
 303
 304    // fix for temporary bug in ESDfilter
 305    // the AODs with null vertex pointer didn't pass the PhysSel
 306    if(!aodEvent->GetPrimaryVertex() || TMath::Abs(aodEvent->GetMagneticField())<0.001) return;
 307
 308    //Event selection
 309    Bool_t iseventselected=fCuts->IsEventSelected(aodEvent);
 310    TString firedTriggerClasses=((AliAODEvent*)aodEvent)->GetFiredTriggerClasses();
 311    if(!iseventselected) return;
 312
 313    hstat->Fill(1);
 314
 315    //retrieve charm candidates selected
 316    Int_t candidates = fCandidateArray->GetEntriesFast();
 317
 318    //trigger on jets
 319
 320    Int_t njets=GetJetContainer()->GetNJets();
 321    if(njets == 0) {
 322       hstat->Fill(6, candidates);
 323       hNDPerEvNoJet->Fill(candidates);
 324       for(Int_t iD=0;iD<candidates;iD++){
 325          AliVParticle* cand=(AliVParticle*)fCandidateArray->At(iD);
 326          if(!cand) continue;
 327          hptDPerEvNoJet->Fill(cand->Pt());
 328
 329       }
 330       return;
 331
 332    }
 333
 334    //loop on candidates standalone (checking the candidates are there and their phi-eta distributions)
 335
 336    for(Int_t ic = 0; ic < candidates; ic++) {
 337
 338       // D* candidates
 339       AliAODRecoDecayHF* charm=0x0;
 340       AliAODRecoCascadeHF* dstar=0x0;
 341
 342
 343       charm=(AliAODRecoDecayHF*)fCandidateArray->At(ic);
 344       if(!charm) continue;
 345
 346       if(fCandidateType==kDstartoKpipi){
 347          dstar=(AliAODRecoCascadeHF*)fCandidateArray->At(ic);
 348          if(!dstar) continue;
 349       }
 350
 351       hstat->Fill(2);
 352
 353       Double_t candsparse[4]={charm->Eta(), charm->Phi(), charm->Pt(), 0};
 354
 355       if(fCandidateType==kDstartoKpipi) {
 356          Double_t deltamass= dstar->DeltaInvMass();
 357          candsparse[3]=deltamass;
 358          hnspDstandalone->Fill(candsparse);
 359       }
 360       if(fCandidateType==kD0toKpi){
 361          AliAODRecoDecayHF* dzero=(AliAODRecoDecayHF*)charm;
 362          Int_t isselected=fCuts->IsSelected(dzero,AliRDHFCuts::kAll,aodEvent);
 363
 364          Double_t masses[2];
 365          Int_t pdgdaughtersD0[2]={211,321};//pi,K
 366          Int_t pdgdaughtersD0bar[2]={321,211};//K,pi
 367
 368          masses[0]=dzero->InvMass(fNProngs,(UInt_t*)pdgdaughtersD0); //D0
 369          masses[1]=dzero->InvMass(fNProngs,(UInt_t*)pdgdaughtersD0bar); //D0bar
 370          if(isselected==1 || isselected==3) {
 371             candsparse[3]=masses[0];
 372             hnspDstandalone->Fill(candsparse);
 373          }
 374          if(isselected>=2){
 375             candsparse[3]=masses[1];
 376             hnspDstandalone->Fill(candsparse);
 377
 378          }
 379       }
 380    }
 381
 382    // we start with jets
 383    Double_t ejet   = 0;
 384    Double_t phiJet = 0;
 385    Double_t etaJet = 0;
 386    Double_t ptjet = 0;
 387    Double_t leadingJet =0;
 388
 389    Int_t ntrarr=trackArr->GetEntriesFast();
 390    hNtrArr->Fill(ntrarr);
 391
 392    for(Int_t i=0;i<ntrarr;i++){
 393       AliVTrack *jtrack=static_cast<AliVTrack*>(trackArr->At(i));
 394       //reusing histograms
 395       hPtJetTrks->Fill(jtrack->Pt());
 396       hPhiJetTrks->Fill(jtrack->Phi());
 397       hEtaJetTrks->Fill(jtrack->Eta());
 398       hEjetTrks->Fill(jtrack->E());
 399    }
 400
 401
 402    //option to use only the leading jet
 403    if(fLeadingJetOnly){
 404       for (Int_t iJetsL = 0; iJetsL<njets; iJetsL++) {
 405          AliEmcalJet* jetL = (AliEmcalJet*)GetJetFromArray(iJetsL);
 406          ptjet   = jetL->Pt();
 407          if(ptjet>leadingJet ) leadingJet = ptjet;
 408
 409       }
 410    }
 411
 412    Int_t cntjet=0;
 413    //loop over jets and consider only the leading jet in the event
 414    for (Int_t iJets = 0; iJets<njets; iJets++) {
 415       //Printf("Jet N %d",iJets);
 416       AliEmcalJet* jet = (AliEmcalJet*)GetJetFromArray(iJets);
 417       //Printf("Corr task Accept Jet");
 418       if(!AcceptJet(jet)) {
 419          hstat->Fill(5);
 420          continue;
 421       }
 422
 423       //jets variables
 424       ejet   = jet->E();
 425       phiJet = jet->Phi();
 426       etaJet = jet->Eta();
 427       ptjet = jet->Pt();
 428
 429       // choose the leading jet
 430       if(fLeadingJetOnly && (ejet<leadingJet)) continue;
 431       //used for normalization
 432       hstat->Fill(3);
 433       cntjet++;
 434       // fill energy, eta and phi of the jet
 435       hEjet   ->Fill(ejet);
 436       hPhiJet ->Fill(phiJet);
 437       hEtaJet ->Fill(etaJet);
 438       hPtJet  ->Fill(ptjet);
 439
 440       //loop on jet particles
 441       Int_t ntrjet=  jet->GetNumberOfTracks();
 442       for(Int_t itrk=0;itrk<ntrjet;itrk++){
 443
 444          AliPicoTrack* jetTrk=(AliPicoTrack*)jet->TrackAt(itrk,trackArr);
 445          hdeltaRJetTracks->Fill(DeltaR(jet,jetTrk));
 446
 447       }//end loop on jet tracks
 448
 449       if(candidates==0){
 450          hstat->Fill(7);
 451          hPtJetPerEvNoD->Fill(jet->Pt());
 452       }
 453
 454       //Printf("N candidates %d ", candidates);
 455       for(Int_t ic = 0; ic < candidates; ic++) {
 456
 457          // D* candidates
 458          AliVParticle* charm=0x0;
 459          charm=(AliVParticle*)fCandidateArray->At(ic);
 460          if(!charm) continue;
 461
 462
 463          FlagFlavour(charm, jet);
 464          if (jet->TestFlavourTag(AliEmcalJet::kDStar)) hstat->Fill(4);
 465
 466          FillHistogramsRecoJetCorr(charm, jet);
 467
 468       }
 469       //retrieve side band background candidates for Dstar
 470       Int_t nsbcand = 0; if(fSideBandArray) nsbcand=fSideBandArray->GetEntriesFast();
 471
 472       for(Int_t ib=0;ib<nsbcand;ib++){
 473          if(fCandidateType==kDstartoKpipi && !fUseMCInfo){
 474             AliAODRecoCascadeHF *sbcand=(AliAODRecoCascadeHF*)fSideBandArray->At(ib);
 475             if(!sbcand) continue;
 476             SideBandBackground(sbcand,jet);
 477          }
 478          if(fUseMCInfo){
 479             AliAODRecoDecayHF* charmbg = 0x0;
 480             charmbg=(AliAODRecoDecayHF*)fCandidateArray->At(ib);
 481             if(!charmbg) continue;
 482             MCBackground(charmbg,jet);
 483          }
 484       }
 485    } // end of jet loop
 486
 487    hNJetPerEv->Fill(cntjet);
 488    if(candidates==0) hNJetPerEvNoD->Fill(cntjet);
 489    PostData(1,fmyOutput);
 490
 491 }
 492
 493 //_______________________________________________________________________________
 494
 495 void AliAnalysisTaskFlavourJetCorrelations::Terminate(Option_t*)
 496 {
 497    // The Terminate() function is the last function to be called during
 498    // a query. It always runs on the client, it can be used to present
 499    // the results graphically or save the results to file.
 500
 501    Info("Terminate"," terminate");
 502    AliAnalysisTaskSE::Terminate();
 503
 504    fmyOutput = dynamic_cast<TList*> (GetOutputData(1));
 505    if (!fmyOutput) {
 506       printf("ERROR: fmyOutput not available\n");
 507       return;
 508    }
 509 }
 510
 511 //_______________________________________________________________________________
 512
 513 void  AliAnalysisTaskFlavourJetCorrelations::SetMassLimits(Double_t range, Int_t pdg){
 514    Float_t mass=0;
 515    Int_t abspdg=TMath::Abs(pdg);
 516
 517    mass=TDatabasePDG::Instance()->GetParticle(abspdg)->Mass();
 518    // compute the Delta mass for the D*
 519    if(fCandidateType==kDstartoKpipi){
 520       Float_t mass1=0;
 521       mass1=TDatabasePDG::Instance()->GetParticle(421)->Mass();
 522       mass = mass-mass1;
 523    }
 524
 525    fMinMass = mass-range;
 526    fMaxMass = mass+range;
 527
 528    AliInfo(Form("Setting mass limits to %f, %f",fMinMass,fMaxMass));
 529    if (fMinMass<0 || fMaxMass<=0 || fMaxMass<fMinMass) AliFatal("Wrong mass limits!\n");
 530 }
 531
 532 //_______________________________________________________________________________
 533
 534 void  AliAnalysisTaskFlavourJetCorrelations::SetMassLimits(Double_t lowlimit, Double_t uplimit){
 535    if(uplimit>lowlimit)
 536    {
 537       fMinMass = lowlimit;
 538       fMaxMass = uplimit;
 539    }
 540    else{
 541       printf("Error! Lower limit larger than upper limit!\n");
 542       fMinMass = uplimit - uplimit*0.2;
 543       fMaxMass = uplimit;
 544    }
 545 }
 546
 547 //_______________________________________________________________________________
 548
 549 Bool_t AliAnalysisTaskFlavourJetCorrelations::SetD0WidthForDStar(Int_t nptbins,Float_t *width){
 550    if(nptbins>30) {
 551       AliInfo("Maximum number of bins allowed is 30!");
 552       return kFALSE;
 553    }
 554    if(!width) return kFALSE;
 555    for(Int_t ipt=0;ipt<nptbins;ipt++) fSigmaD0[ipt]=width[ipt];
 556    return kTRUE;
 557 }
 558
 559 //_______________________________________________________________________________
 560
 561 Double_t AliAnalysisTaskFlavourJetCorrelations::Z(AliVParticle* part,AliEmcalJet* jet) const{
 562    if(!part || !jet){
 563       printf("Particle or jet do not exist!\n");
 564       return -99;
 565    }
 566    Double_t p[3],pj[3];
 567    Bool_t okpp=part->PxPyPz(p);
 568    Bool_t okpj=jet->PxPyPz(pj);
 569    if(!okpp || !okpj){
 570       printf("Problems getting momenta\n");
 571       return -999;
 572    }
 573    Double_t pjet=jet->P();
 574    Double_t z=(p[0]*pj[0]+p[1]*pj[1]+p[2]*pj[2])/(pjet*pjet);
 575    return z;
 576 }
 577
 578 //_______________________________________________________________________________
 579
 580 Bool_t  AliAnalysisTaskFlavourJetCorrelations::DefineHistoForAnalysis(){
 581
 582    // Statistics
 583    TH1I* hstat=new TH1I("hstat","Statistics",8,-0.5,7.5);
 584    hstat->GetXaxis()->SetBinLabel(1,"N ev anal");
 585    hstat->GetXaxis()->SetBinLabel(2,"N ev sel");
 586    hstat->GetXaxis()->SetBinLabel(3,"N cand sel & jet");
 587    hstat->GetXaxis()->SetBinLabel(4,"N jets");
 588    hstat->GetXaxis()->SetBinLabel(5,"N cand in jet");
 589    hstat->GetXaxis()->SetBinLabel(6,"N jet rej");
 590    hstat->GetXaxis()->SetBinLabel(7,"N cand sel & !jet");
 591    hstat->GetXaxis()->SetBinLabel(8,"N jets & !D");
 592    hstat->SetNdivisions(1);
 593    fmyOutput->Add(hstat);
 594
 595    const Int_t nbinsmass=200;
 596    const Int_t nbinsptjet=500;
 597    const Int_t nbinsptD=100;
 598    const Int_t nbinsz=100;
 599    const Int_t nbinsphi=200;
 600    const Int_t nbinseta=100;
 601
 602    const Float_t ptjetlims[2]={0.,200.};
 603    const Float_t ptDlims[2]={0.,50.};
 604    const Float_t zlims[2]={0.,1.2};
 605    const Float_t philims[2]={0.,6.3};
 606    const Float_t etalims[2]={-1.5,1.5};
 607
 608    if(fCandidateType==kDstartoKpipi)
 609    {
 610
 611       TH2F* hDiffSideBand = new TH2F("hDiffSideBand","M(kpipi)-M(kpi) Side Band Background",nbinsmass,fMinMass,fMaxMass,nbinsptD, ptDlims[0],ptDlims[1]);
 612       hDiffSideBand->SetStats(kTRUE);
 613       hDiffSideBand->GetXaxis()->SetTitle("M(kpipi)-M(Kpi) GeV");
 614       hDiffSideBand->GetYaxis()->SetTitle("p_{t}^{D} (GeV/c)");
 615       hDiffSideBand->Sumw2();
 616       fmyOutput->Add(hDiffSideBand);
 617
 618
 619       TH1F* hPtPion = new TH1F("hPtPion","Primary pions candidates pt ",500,0,10);
 620       hPtPion->SetStats(kTRUE);
 621       hPtPion->GetXaxis()->SetTitle("GeV/c");
 622       hPtPion->GetYaxis()->SetTitle("Entries");
 623       hPtPion->Sumw2();
 624       fmyOutput->Add(hPtPion);
 625
 626    }
 627    // D related histograms
 628    TH1F *hNDPerEvNoJet=new TH1F("hNDPerEvNoJet","Number of candidates per event with no jets; N candidate/ev with no jet", 20, 0., 20.);
 629    hNDPerEvNoJet->Sumw2();
 630    fmyOutput->Add(hNDPerEvNoJet);
 631
 632    TH1F *hptDPerEvNoJet=new TH1F("hptDPerEvNoJet","pt distribution of candidates per events with no jets; p_{t}^{D} (GeV/c)",nbinsptD, ptDlims[0],ptDlims[1]);
 633    hptDPerEvNoJet->Sumw2();
 634    fmyOutput->Add(hptDPerEvNoJet);
 635
 636    const Int_t    nAxisD=4;
 637    const Int_t    nbinsSparseD[nAxisD]={nbinseta,nbinsphi,nbinsptD,nbinsmass};
 638    const Double_t minSparseD[nAxisD]  ={etalims[0],philims[0],ptDlims[0],fMinMass};
 639    const Double_t maxSparseD[nAxisD]  ={etalims[1],philims[1],ptDlims[1],fMaxMass};
 640    THnSparseF *hsDstandalone=new THnSparseF("hsDstandalone","#phi, #eta, p_{T}^{D}, and mass", nAxisD, nbinsSparseD, minSparseD, maxSparseD);
 641    hsDstandalone->Sumw2();
 642
 643    fmyOutput->Add(hsDstandalone);
 644
 645    // jet related fistograms
 646
 647    TH1F* hEjetTrks      = new TH1F("hEjetTrks",  "Jet tracks energy distribution;Energy (GeV)",500,0,200);
 648    hEjetTrks->Sumw2();
 649    TH1F* hPhiJetTrks    = new TH1F("hPhiJetTrks","Jet tracks #phi distribution; #phi (rad)",  nbinsphi,philims[0],philims[1]);
 650    hPhiJetTrks->Sumw2();
 651    TH1F* hEtaJetTrks    = new TH1F("hEtaJetTrks","Jet tracks #eta distribution; #eta",  nbinseta,etalims[0],etalims[1]);
 652    hEtaJetTrks->Sumw2();
 653    TH1F* hPtJetTrks     = new TH1F("hPtJetTrks",  "Jet tracks Pt distribution; p_{T} (GeV/c)",nbinsptjet,ptjetlims[0],ptjetlims[1]);
 654    hPtJetTrks->Sumw2();
 655
 656    TH1F* hEjet      = new TH1F("hEjet",  "Jet energy distribution;Energy (GeV)",500,0,200);
 657    hEjet->Sumw2();
 658    TH1F* hPhiJet    = new TH1F("hPhiJet","Jet #phi distribution; #phi (rad)",  nbinsphi,philims[0],philims[1]);
 659    hPhiJet->Sumw2();
 660    TH1F* hEtaJet    = new TH1F("hEtaJet","Jet #eta distribution; #eta", nbinseta,etalims[0],etalims[1]);
 661    hEtaJet->Sumw2();
 662    TH1F* hPtJet      = new TH1F("hPtJet",  "Jet Pt distribution; p_{T} (GeV/c)",nbinsptjet,ptjetlims[0],ptjetlims[1]);
 663    hPtJet->Sumw2();
 664
 665    TH3F* hPtJetWithD=new TH3F("hPtJetWithD","D-Jet Pt distribution; p_{T} (GeV/c);delta mass (GeV/c^{2})",nbinsptjet,ptjetlims[0],ptjetlims[1],nbinsmass,fMinMass,fMaxMass,nbinsptD, ptDlims[0],ptDlims[1]);
 666    hPtJetWithD->Sumw2();
 667    //for the MC this histogram is filled with the real background
 668    TH3F* hPtJetWithDsb=new TH3F("hPtJetWithDsb","D(background)-Jet Pt distribution; p_{T} (GeV/c);delta mass (GeV/c^{2});p_{T}^{D} (GeV/c)",nbinsptjet,ptjetlims[0],ptjetlims[1],nbinsmass,fMinMass,fMaxMass,nbinsptD, ptDlims[0],ptDlims[1]);
 669    hPtJetWithDsb->Sumw2();
 670
 671    TH1F* hdeltaRJetTracks=new TH1F("hdeltaRJetTracks","Delta R of tracks in the jets",200, 0.,10.);
 672    hdeltaRJetTracks->Sumw2();
 673
 674    TH1F* hNtrArr= new TH1F("hNtrArr", "Number of tracks in the array of jets; number of tracks",500,0,1000);
 675    hNtrArr->Sumw2();
 676
 677    TH1F *hNJetPerEv=new TH1F("hNJetPerEv","Number of jets used per event; number of jets/ev",10,-0.5,9.5);
 678    hNJetPerEv->Sumw2();
 679
 680    TH1F *hNJetPerEvNoD=new TH1F("hNJetPerEvNoD","Number of jets per event with no D; number of jets/ev with no D",10,-0.5,9.5);
 681    hNJetPerEvNoD->Sumw2();
 682
 683    TH1F *hPtJetPerEvNoD=new TH1F("hPtJetPerEvNoD","pt distribution of jets per event with no D; p_{T}^{jet} (GeV/c)",nbinsptjet,ptjetlims[0],ptjetlims[1]);
 684    hPtJetPerEvNoD->Sumw2();
 685
 686    fmyOutput->Add(hEjetTrks);
 687    fmyOutput->Add(hPhiJetTrks);
 688    fmyOutput->Add(hEtaJetTrks);
 689    fmyOutput->Add(hPtJetTrks);
 690    fmyOutput->Add(hEjet);
 691    fmyOutput->Add(hPhiJet);
 692    fmyOutput->Add(hEtaJet);
 693    fmyOutput->Add(hPtJet);
 694    fmyOutput->Add(hPtJetWithD);
 695    fmyOutput->Add(hPtJetWithDsb);
 696    fmyOutput->Add(hdeltaRJetTracks);
 697    fmyOutput->Add(hNtrArr);
 698    fmyOutput->Add(hNJetPerEv);
 699    fmyOutput->Add(hNJetPerEvNoD);
 700    fmyOutput->Add(hPtJetPerEvNoD);
 701
 702    TH1F* hDeltaRD=new TH1F("hDeltaRD","#Delta R distribution of D candidates selected;#Delta R",200, 0.,10.);
 703    hDeltaRD->Sumw2();
 704    fmyOutput->Add(hDeltaRD);
 705
 706    //background (side bands for the Dstar and like sign for D0)
 707    fJetRadius=GetJetContainer(0)->GetJetRadius();
 708    TH2F* hInvMassptD = new TH2F("hInvMassptD",Form("D (Delta R < %.1f) invariant mass distribution p_{T}^{j} > threshold",fJetRadius),nbinsmass,fMinMass,fMaxMass,nbinsptD,ptDlims[0],ptDlims[1]);
 709    hInvMassptD->SetStats(kTRUE);
 710    hInvMassptD->GetXaxis()->SetTitle("mass (GeV)");
 711    hInvMassptD->GetYaxis()->SetTitle("p_{t}^{D} (GeV/c)");
 712    hInvMassptD->Sumw2();
 713
 714    fmyOutput->Add(hInvMassptD);
 715
 716    if(fUseMCInfo){
 717       TH2F* hInvMassptDbg = new TH2F("hInvMassptDbg",Form("Background D (Delta R < %.1f) invariant mass distribution p_{T}^{j} > threshold",fJetRadius),nbinsmass,fMinMass,fMaxMass,nbinsptD,ptDlims[0],ptDlims[1]);
 718       hInvMassptDbg->GetXaxis()->SetTitle(Form("%s (GeV)",(fCandidateType==kDstartoKpipi) ? "M(Kpipi)" : "M(Kpi)"));
 719       hInvMassptDbg->GetYaxis()->SetTitle("p_{t}^{D} (GeV/c)");
 720       hInvMassptDbg->Sumw2();
 721       fmyOutput->Add(hInvMassptDbg);
 722
 723    }
 724    Double_t pi=TMath::Pi(), philims2[2];
 725    philims2[0]=-pi*1./2.;
 726    philims2[1]=pi*3./2.;
 727    const Int_t nAxis=6;
 728    const Int_t nbinsSparse[nAxis]={nbinsz,nbinsphi,nbinsptjet,nbinsptD,nbinsmass,2};
 729    const Double_t minSparse[nAxis]={zlims[0],philims2[0],ptjetlims[0],ptDlims[0],fMinMass,-0.5};
 730    const Double_t maxSparse[nAxis]={zlims[1],philims2[1],ptjetlims[1],ptDlims[1],fMaxMass, 1.5};
 731    THnSparseF *hsDphiz=new THnSparseF("hsDphiz","Z and #Delta#phi vs p_{T}^{jet}, p_{T}^{D}, mass and IsSB", nAxis, nbinsSparse, minSparse, maxSparse);
 732    hsDphiz->Sumw2();
 733
 734    fmyOutput->Add(hsDphiz);
 735
 736    PostData(1, fmyOutput);
 737
 738    return kTRUE;
 739 }
 740
 741 //_______________________________________________________________________________
 742
 743 void AliAnalysisTaskFlavourJetCorrelations::FillHistogramsRecoJetCorr(AliVParticle* candidate, AliEmcalJet *jet){
 744
 745    Double_t ptD=candidate->Pt();
 746    Double_t ptjet=jet->Pt();
 747    Double_t deltaR=DeltaR(candidate,jet);
 748    Double_t deltaphi = jet->Phi()-candidate->Phi();
 749    if(deltaphi<=-(TMath::Pi())/2) deltaphi = deltaphi+2*(TMath::Pi());
 750    if(deltaphi>(3*(TMath::Pi()))/2) deltaphi = deltaphi-2*(TMath::Pi());
 751    Double_t z=Z(candidate,jet);
 752
 753    TH1F* hDeltaRD=(TH1F*)fmyOutput->FindObject("hDeltaRD");
 754    hDeltaRD->Fill(deltaR);
 755    if(fUseReco){
 756       if(fCandidateType==kD0toKpi) {
 757          AliAODRecoDecayHF* dzero=(AliAODRecoDecayHF*)candidate;
 758          FillHistogramsD0JetCorr(dzero,deltaphi,z,ptD,ptjet,deltaR, AODEvent());
 759
 760       }
 761
 762       if(fCandidateType==kDstartoKpipi) {
 763          AliAODRecoCascadeHF* dstar = (AliAODRecoCascadeHF*)candidate;
 764          FillHistogramsDstarJetCorr(dstar,deltaphi,z,ptD,ptjet,deltaR);
 765
 766       }
 767    } else{ //generated level
 768       //AliInfo("Non reco");
 769       FillHistogramsMCGenDJetCorr(deltaphi,z,ptD,ptjet,deltaR);
 770    }
 771 }
 772
 773 //_______________________________________________________________________________
 774
 775 void AliAnalysisTaskFlavourJetCorrelations::FillHistogramsD0JetCorr(AliAODRecoDecayHF* candidate, Double_t dPhi, Double_t z, Double_t ptD, Double_t ptj,Double_t deltaR, AliAODEvent* aodEvent){
 776
 777
 778    Double_t masses[2]={0.,0.};
 779    Int_t pdgdaughtersD0[2]={211,321};//pi,K
 780    Int_t pdgdaughtersD0bar[2]={321,211};//K,pi
 781
 782    masses[0]=candidate->InvMass(fNProngs,(UInt_t*)pdgdaughtersD0); //D0
 783    masses[1]=candidate->InvMass(fNProngs,(UInt_t*)pdgdaughtersD0bar); //D0bar
 784
 785    TH3F* hPtJetWithD=(TH3F*)fmyOutput->FindObject("hPtJetWithD");
 786    THnSparseF* hsDphiz=(THnSparseF*)fmyOutput->FindObject("hsDphiz");
 787    Double_t point[6]={z,dPhi,ptj,ptD,masses[0],0};
 788
 789    Int_t isselected=fCuts->IsSelected(candidate,AliRDHFCuts::kAll,aodEvent);
 790    if(isselected==1 || isselected==3) {
 791
 792       if(deltaR<fJetRadius) hPtJetWithD->Fill(ptj,masses[0],ptD);
 793
 794       FillMassHistograms(masses[0], ptD, deltaR);
 795       hsDphiz->Fill(point,1.);
 796    }
 797    if(isselected>=2) {
 798       if(deltaR<fJetRadius) hPtJetWithD->Fill(ptj,masses[1],ptD);
 799
 800       FillMassHistograms(masses[1], ptD, deltaR);
 801       point[4]=masses[1];
 802       hsDphiz->Fill(point,1.);
 803    }
 804
 805 }
 806
 807 //_______________________________________________________________________________
 808
 809 void AliAnalysisTaskFlavourJetCorrelations::FillHistogramsDstarJetCorr(AliAODRecoCascadeHF* dstar, Double_t dPhi, Double_t z, Double_t ptD, Double_t ptj, Double_t deltaR){
 810   //dPhi and z not used at the moment,but will be (re)added
 811
 812    AliAODTrack *softpi = (AliAODTrack*)dstar->GetBachelor();
 813    Double_t deltamass= dstar->DeltaInvMass();
 814    //Double_t massD0= dstar->InvMassD0();
 815
 816
 817    TH1F* hPtPion=(TH1F*)fmyOutput->FindObject("hPtPion");
 818    hPtPion->Fill(softpi->Pt());
 819
 820    TH3F* hPtJetWithD=(TH3F*)fmyOutput->FindObject("hPtJetWithD");
 821    THnSparseF* hsDphiz=(THnSparseF*)fmyOutput->FindObject("hsDphiz");
 822    Int_t isSB=IsDzeroSideBand(dstar);
 823
 824    Double_t point[6]={z,dPhi,ptj,ptD,deltamass,isSB};
 825
 826    if(deltaR<fJetRadius) hPtJetWithD->Fill(ptj,deltamass,ptD);
 827
 828    FillMassHistograms(deltamass, ptD, deltaR);
 829    hsDphiz->Fill(point,1.);
 830
 831 }
 832
 833 //_______________________________________________________________________________
 834
 835 void AliAnalysisTaskFlavourJetCorrelations::FillHistogramsMCGenDJetCorr(Double_t dPhi,Double_t z,Double_t ptD,Double_t ptjet,Double_t deltaR){
 836
 837    Double_t pdgmass=0;
 838    TH3F* hPtJetWithD=(TH3F*)fmyOutput->FindObject("hPtJetWithD");
 839    THnSparseF* hsDphiz=(THnSparseF*)fmyOutput->FindObject("hsDphiz");
 840    Double_t point[6]={z,dPhi,ptjet,ptD,pdgmass,0};
 841
 842    if(fCandidateType==kD0toKpi) pdgmass=TDatabasePDG::Instance()->GetParticle(421)->Mass();
 843    if(fCandidateType==kDstartoKpipi) pdgmass=TDatabasePDG::Instance()->GetParticle(413)->Mass()-TDatabasePDG::Instance()->GetParticle(421)->Mass();
 844    point[4]=pdgmass;
 845
 846    if(deltaR<fJetRadius) {
 847      hPtJetWithD->Fill(ptjet,pdgmass,ptD); // candidates within a jet
 848      hsDphiz->Fill(point,1.);
 849    }
 850
 851 }
 852
 853 //_______________________________________________________________________________
 854
 855 void AliAnalysisTaskFlavourJetCorrelations::FillMassHistograms(Double_t mass,Double_t ptD, Double_t deltaR){
 856
 857    if(deltaR<fJetRadius) {
 858       TH2F* hInvMassptD=(TH2F*)fmyOutput->FindObject("hInvMassptD");
 859       hInvMassptD->Fill(mass,ptD);
 860    }
 861 }
 862
 863 //________________________________________________________________________________
 864
 865 void AliAnalysisTaskFlavourJetCorrelations::FlagFlavour(AliVParticle *charm, AliEmcalJet *jet){
 866    Double_t deltaR=DeltaR(charm, jet);
 867    AliEmcalJet::EFlavourTag tag=AliEmcalJet::kDStar;
 868    if (fCandidateType==kD0toKpi) tag=AliEmcalJet::kD0;
 869    if (deltaR<fJetRadius) jet->AddFlavourTag(tag);
 870
 871    return;
 872
 873 }
 874
 875 //_______________________________________________________________________________
 876
 877 void AliAnalysisTaskFlavourJetCorrelations::SideBandBackground(AliAODRecoCascadeHF *candDstar, AliEmcalJet *jet){
 878
 879    //  D* side band background method. Two side bands, in M(Kpi) are taken at ~6 sigmas
 880    // (expected detector resolution) on the left and right frm the D0 mass. Each band
 881    //  has a width of ~5 sigmas. Two band needed  for opening angle considerations
 882    TH2F* hDiffSideBand=(TH2F*)fmyOutput->FindObject("hDiffSideBand");
 883    TH3F* hPtJetWithDsb=(TH3F*)fmyOutput->FindObject("hPtJetWithDsb");
 884
 885    Double_t deltaM=candDstar->DeltaInvMass();
 886    //Printf("Inv mass = %f between %f and %f or %f and %f?",invM, sixSigmal,fourSigmal,fourSigmar,sixSigmar);
 887    Double_t ptD=candDstar->Pt();
 888    Double_t ptjet=jet->Pt();
 889    Double_t dPhi=jet->Phi()-candDstar->Phi();
 890    Double_t deltaR=DeltaR(candDstar,jet);
 891    if(dPhi>TMath::Pi())dPhi = dPhi - 2.*TMath::Pi();
 892    if(dPhi<(-1.*TMath::Pi()))dPhi = dPhi + 2.*TMath::Pi();
 893
 894    Int_t isSideBand=IsDzeroSideBand(candDstar);
 895    //fill the background histogram with the side bands or when looking at MC with the real background
 896    if(isSideBand==1){
 897       hDiffSideBand->Fill(deltaM,ptD); // M(Kpipi)-M(Kpi) side band background
 898       //hdeltaPhiDjaB->Fill(deltaM,ptD,dPhi);
 899
 900       if(deltaR<fJetRadius){  // evaluate in the near side
 901          //hzptDB->Fill(Z(candDstar,jet),deltaM,ptD);
 902          hPtJetWithDsb->Fill(ptjet,deltaM,ptD);
 903       }
 904    }
 905 }
 906
 907 //_______________________________________________________________________________
 908
 909 void AliAnalysisTaskFlavourJetCorrelations::MCBackground(AliAODRecoDecayHF *candbg, AliEmcalJet *jet){
 910
 911    //need mass, deltaR, pt jet, ptD
 912    //two cases: D0 and Dstar
 913
 914    Int_t isselected=fCuts->IsSelected(candbg,AliRDHFCuts::kAll, AODEvent());
 915    if(!isselected) return;
 916
 917    Double_t ptD=candbg->Pt();
 918    Double_t ptjet=jet->Pt();
 919    Double_t deltaR=DeltaR(candbg,jet);
 920
 921    TH2F* hInvMassptDbg=(TH2F*)fmyOutput->FindObject("hInvMassptDbg");
 922    TH3F* hPtJetWithDsb=(TH3F*)fmyOutput->FindObject("hPtJetWithDsb");
 923
 924
 925    if(fCandidateType==kDstartoKpipi){
 926       AliAODRecoCascadeHF* dstarbg = (AliAODRecoCascadeHF*)candbg;
 927       Double_t deltaM=dstarbg->DeltaInvMass();
 928       hInvMassptDbg->Fill(deltaM,ptD);
 929       if(deltaR<fJetRadius) hPtJetWithDsb->Fill(ptjet,deltaM,ptD);
 930    }
 931
 932    if(fCandidateType==kD0toKpi){
 933       Double_t masses[2]={0.,0.};
 934       Int_t pdgdaughtersD0[2]={211,321};//pi,K
 935       Int_t pdgdaughtersD0bar[2]={321,211};//K,pi
 936
 937       masses[0]=candbg->InvMass(fNProngs,(UInt_t*)pdgdaughtersD0); //D0
 938       masses[1]=candbg->InvMass(fNProngs,(UInt_t*)pdgdaughtersD0bar); //D0bar
 939
 940
 941       if(isselected==1 || isselected==3) {
 942          if(deltaR<fJetRadius) hPtJetWithDsb->Fill(ptjet,masses[0],ptD);
 943          hInvMassptDbg->Fill(masses[0],ptD);
 944       }
 945       if(isselected>=2) {
 946          if(deltaR<fJetRadius) hPtJetWithDsb->Fill(ptjet,masses[1],ptD);
 947          hInvMassptDbg->Fill(masses[1],ptD);
 948       }
 949
 950
 951    }
 952 }
 953
 954 //_______________________________________________________________________________
 955
 956 Float_t AliAnalysisTaskFlavourJetCorrelations::DeltaR(AliVParticle *p1, AliVParticle *p2) const {
 957    //Calculate DeltaR between p1 and p2: DeltaR=sqrt(Delataphi^2+DeltaEta^2)
 958
 959    if(!p1 || !p2) return -1;
 960    Double_t phi1=p1->Phi(),eta1=p1->Eta();
 961    Double_t phi2 = p2->Phi(),eta2 = p2->Eta() ;
 962
 963    Double_t dPhi=phi1-phi2;
 964    if(dPhi<=-(TMath::Pi())/2) dPhi = dPhi+2*(TMath::Pi());
 965    if(dPhi>(3*(TMath::Pi()))/2) dPhi = dPhi-2*(TMath::Pi());
 966
 967    Double_t dEta=eta1-eta2;
 968    Double_t deltaR=TMath::Sqrt(dEta*dEta + dPhi*dPhi );
 969    return deltaR;
 970
 971 }
 972
 973 //_______________________________________________________________________________
 974
 975 Int_t AliAnalysisTaskFlavourJetCorrelations::IsDzeroSideBand(AliAODRecoCascadeHF *candDstar){
 976
 977    Double_t ptD=candDstar->Pt();
 978    Int_t bin = fCuts->PtBin(ptD);
 979    if (bin < 0){
 980       // /PWGHF/vertexingHF/AliRDHFCuts::PtBin(Double_t) const may return values below zero depending on config.
 981       bin = 9999; // void result code for coverity (bin later in the code non-zero) - will coverity pick up on this?
 982       return -1;  // out of bounds
 983    }
 984
 985    Double_t invM=candDstar->InvMassD0();
 986    Double_t mPDGD0=TDatabasePDG::Instance()->GetParticle(421)->Mass();
 987
 988    Float_t fourSigmal= mPDGD0-4.*fSigmaD0[bin] , sixSigmal= mPDGD0-8.*fSigmaD0[bin];
 989    Float_t fourSigmar= mPDGD0+4.*fSigmaD0[bin] , sixSigmar= mPDGD0+8.*fSigmaD0[bin];
 990
 991    if((invM>=sixSigmal && invM<fourSigmal) || (invM>fourSigmar && invM<=sixSigmar)) return 1;
 992    else return 0;
 993
 994 }