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931f8b00 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// 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
50ClassImp(AliAnalysisTaskFlavourJetCorrelations)
51
52
53//_______________________________________________________________________________
54
55AliAnalysisTaskFlavourJetCorrelations::AliAnalysisTaskFlavourJetCorrelations() :
56AliAnalysisTaskEmcalJet("",kFALSE),
57fUseMCInfo(kTRUE),
58fUseReco(kTRUE),
59fCandidateType(),
60fPDGmother(),
61fNProngs(),
62fPDGdaughters(),
63fBranchName(),
64fmyOutput(0),
65fCuts(0),
66fMinMass(),
67fMaxMass(),
68fJetArrName(0),
69fCandArrName(0),
70fLeadingJetOnly(kFALSE),
71fJetRadius(0)
72{
73 //
74 // Default ctor
75 //
76 //SetMakeGeneralHistograms(kTRUE);
77
78}
79
80//_______________________________________________________________________________
81
82AliAnalysisTaskFlavourJetCorrelations::AliAnalysisTaskFlavourJetCorrelations(const Char_t* name, AliRDHFCuts* cuts,ECandidateType candtype) :
83AliAnalysisTaskEmcalJet(name,kFALSE),
84fUseMCInfo(kTRUE),
85fUseReco(kTRUE),
86fCandidateType(),
87fPDGmother(),
88fNProngs(),
89fPDGdaughters(),
90fBranchName(),
91fmyOutput(0),
92fCuts(0),
93fMinMass(),
94fMaxMass(),
95fJetArrName(0),
96fCandArrName(0),
97fLeadingJetOnly(kFALSE),
98fJetRadius(0)
99{
100 //
101 // Constructor. Initialization of Inputs and Outputs
102 //
103
104 Info("AliAnalysisTaskFlavourJetCorrelations","Calling Constructor");
105 fCuts=cuts;
106 fCandidateType=candtype;
107 const Int_t nptbins=fCuts->GetNPtBins();
108 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};
109
110 switch(fCandidateType){
111 case 0:
112 fPDGmother=421;
113 fNProngs=2;
114 fPDGdaughters[0]=211;//pi
115 fPDGdaughters[1]=321;//K
116 fPDGdaughters[2]=0; //empty
117 fPDGdaughters[3]=0; //empty
118 fBranchName="D0toKpi";
119 fCandArrName="D0";
120 break;
121 case 1:
122 fPDGmother=413;
123 fNProngs=3;
124 fPDGdaughters[1]=211;//pi soft
125 fPDGdaughters[0]=421;//D0
126 fPDGdaughters[2]=211;//pi fromD0
127 fPDGdaughters[3]=321; // K from D0
128 fBranchName="Dstar";
129 fCandArrName="Dstar";
130
131 if(nptbins<=13){
132 for(Int_t ipt=0;ipt<nptbins;ipt++) fSigmaD0[ipt]= defaultSigmaD013[ipt];
133 } else {
134 AliFatal(Form("Default sigma D0 not enough for %d pt bins, use SetSigmaD0ForDStar to set them",nptbins));
135 }
136 break;
137 default:
138 printf("%d not accepted!!\n",fCandidateType);
139 break;
140 }
141
142 if(fCandidateType==kD0toKpi)SetMassLimits(0.15,fPDGmother);
143 if(fCandidateType==kDstartoKpipi) SetMassLimits(0.015, fPDGmother);
144
145 DefineOutput(1,TList::Class()); // histos
146 DefineOutput(2,AliRDHFCuts::Class()); // my cuts
147
148}
149
150//_______________________________________________________________________________
151
152AliAnalysisTaskFlavourJetCorrelations::~AliAnalysisTaskFlavourJetCorrelations() {
153 //
154 // destructor
155 //
156
157 Info("~AliAnalysisTaskFlavourJetCorrelations","Calling Destructor");
158
159 delete fmyOutput;
160 delete fCuts;
161
162}
163
164//_______________________________________________________________________________
165
166void AliAnalysisTaskFlavourJetCorrelations::Init(){
167 //
168 // Initialization
169 //
170
171 if(fDebug > 1) printf("AnalysisTaskRecoJetCorrelations::Init() \n");
172 switch(fCandidateType){
173 case 0:
174 {
175 AliRDHFCutsD0toKpi* copyfCuts=new AliRDHFCutsD0toKpi(*(static_cast<AliRDHFCutsD0toKpi*>(fCuts)));
176 copyfCuts->SetName("AnalysisCutsDzero");
177 // Post the data
178 PostData(2,copyfCuts);
179 }
180 break;
181 case 1:
182 {
183 AliRDHFCutsDStartoKpipi* copyfCuts=new AliRDHFCutsDStartoKpipi(*(static_cast<AliRDHFCutsDStartoKpipi*>(fCuts)));
184 copyfCuts->SetName("AnalysisCutsDStar");
185 // Post the cuts
186 PostData(2,copyfCuts);
187 }
188 break;
189 default:
190 return;
191 }
192
193 return;
194}
195
196//_______________________________________________________________________________
197
198void AliAnalysisTaskFlavourJetCorrelations::UserCreateOutputObjects() {
199 // output
200 Info("UserCreateOutputObjects","CreateOutputObjects of task %s\n", GetName());
201 fmyOutput = new TList();
202 fmyOutput->SetOwner();
203 fmyOutput->SetName("pippo");
204 // define histograms
205 DefineHistoForAnalysis();
206 PostData(1,fmyOutput);
207
208 return;
209}
210
211//_______________________________________________________________________________
212
213void AliAnalysisTaskFlavourJetCorrelations::UserExec(Option_t *)
214{
215 // user exec
216 if (!fInitialized){
217 AliAnalysisTaskEmcalJet::ExecOnce();
218 }
219
220 // Load the event
221 AliAODEvent* aodEvent = dynamic_cast<AliAODEvent*>(fInputEvent);
222
223 TClonesArray *arrayDStartoD0pi=0;
224 TClonesArray *trackArr = 0;
225 TClonesArray *candidatesArr = 0;
226 TClonesArray *sbcandArr = 0;
227
228 if (!aodEvent && AODEvent() && IsStandardAOD()) {
229
230 // In case there is an AOD handler writing a standard AOD, use the AOD
231 // event in memory rather than the input (ESD) event.
232 aodEvent = dynamic_cast<AliAODEvent*> (AODEvent());
233
234 // in this case the braches in the deltaAOD (AliAOD.VertexingHF.root)
235 // have to taken from the AOD event hold by the AliAODExtension
236 AliAODHandler* aodHandler = (AliAODHandler*)
237 ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
238 if(aodHandler->GetExtensions()) {
239 AliAODExtension *ext = (AliAODExtension*)aodHandler->GetExtensions()->FindObject("AliAOD.VertexingHF.root");
240 AliAODEvent *aodFromExt = ext->GetAOD();
241 arrayDStartoD0pi=(TClonesArray*)aodFromExt->GetList()->FindObject(fBranchName.Data());
242 }
243 } else {
244 arrayDStartoD0pi=(TClonesArray*)aodEvent->GetList()->FindObject(fBranchName.Data());
245 }
246
247 if (!arrayDStartoD0pi) {
248 AliInfo(Form("Could not find array %s, skipping the event",fBranchName.Data()));
249 // return;
250 } else AliDebug(2, Form("Found %d vertices",arrayDStartoD0pi->GetEntriesFast()));
251
252 TClonesArray* mcArray = 0x0;
253 if (fUseMCInfo) {
254 mcArray = dynamic_cast<TClonesArray*>(aodEvent->FindListObject(AliAODMCParticle::StdBranchName()));
255 if (!mcArray) {
256 printf("AliAnalysisTaskSEDStarSpectra::UserExec: MC particles not found!\n");
257 return;
258 }
259 }
260
261 //retrieve jets
262 trackArr = dynamic_cast<TClonesArray*>(InputEvent()->FindListObject("PicoTracks"));
263 //clusArr = dynamic_cast<TClonesArray*>(InputEvent()->FindListObject("CaloClustersCorr"));
264 //jetArr = dynamic_cast<TClonesArray*>(InputEvent()->FindListObject(fJetArrName));
265 fJetRadius=GetJetContainer(0)->GetJetRadius();
266
267 if(!trackArr){
268 AliInfo(Form("Could not find the track array\n"));
269 return;
270 }
271
272
273 TString arrname="fCandidateArray";
274 TString candarrname=Form("%s%s%s",arrname.Data(),fCandArrName.Data(),fUseReco ? "rec" : "gen");
275 candidatesArr = dynamic_cast<TClonesArray*>(InputEvent()->FindListObject(candarrname));
276 if (!candidatesArr) {
277 Printf("%s array not found",candarrname.Data());
278 InputEvent()->GetList()->ls();
279 return;
280 }
281 //Printf("ncandidates found %d",candidatesArr->GetEntriesFast());
282
283 TString arrSBname="fSideBandArray";
284 TString sbarrname=Form("%s%s%s",arrSBname.Data(),fCandArrName.Data(),fUseReco ? "rec" : "gen");
285 sbcandArr = dynamic_cast<TClonesArray*>(InputEvent()->FindListObject(sbarrname));
286 if (fCandidateType==1 && !sbcandArr) {
287 Printf("%s array not found",sbarrname.Data());
288 InputEvent()->GetList()->ls();
289 return;
290 }
291 //Printf("nSBCand or Bkg found %d",sbcandArr->GetEntriesFast());
292
293
294 //Histograms
295 TH1I* hstat=(TH1I*)fmyOutput->FindObject("hstat");
296 TH1F* hPtJetTrks=(TH1F*)fmyOutput->FindObject("hPtJetTrks");
297 TH1F* hPhiJetTrks=(TH1F*)fmyOutput->FindObject("hPhiJetTrks");
298 TH1F* hEtaJetTrks=(TH1F*)fmyOutput->FindObject("hEtaJetTrks");
299 TH1F* hEjetTrks=(TH1F*)fmyOutput->FindObject("hEjetTrks");
300 TH1F* hPtJet=(TH1F*)fmyOutput->FindObject("hPtJet");
301 TH1F* hPhiJet=(TH1F*)fmyOutput->FindObject("hPhiJet");
302 TH1F* hEtaJet=(TH1F*)fmyOutput->FindObject("hEtaJet");
303 TH1F* hEjet=(TH1F*)fmyOutput->FindObject("hEjet");
304 TH1F* hNtrArr=(TH1F*)fmyOutput->FindObject("hNtrArr");
305 TH1F* hNJetPerEv=(TH1F*)fmyOutput->FindObject("hNJetPerEv");
306 TH1F* hdeltaRJetTracks=((TH1F*)fmyOutput->FindObject("hdeltaRJetTracks"));
307
308 hstat->Fill(0);
309
310 // fix for temporary bug in ESDfilter
311 // the AODs with null vertex pointer didn't pass the PhysSel
312 if(!aodEvent->GetPrimaryVertex() || TMath::Abs(aodEvent->GetMagneticField())<0.001) return;
313
314 //Event selection
315 Bool_t iseventselected=fCuts->IsEventSelected(aodEvent);
316 TString firedTriggerClasses=((AliAODEvent*)aodEvent)->GetFiredTriggerClasses();
317 if(!iseventselected) return;
318
319 hstat->Fill(1);
320
321 //trigger on jets
322
323 Int_t njets=GetJetContainer()->GetNJets();
324 if(njets == 0) return;
325
326 //retrieve charm candidates selected
327 Int_t candidates = candidatesArr->GetEntriesFast();
328
329 // we start with jets
330 Double_t ejet = 0;
331 Double_t phiJet = 0;
332 Double_t etaJet = 0;
333 Double_t ptjet = 0;
334 Double_t leadingJet =0;
335
336 Int_t ntrarr=trackArr->GetEntriesFast();
337 hNtrArr->Fill(ntrarr);
338
339 for(Int_t i=0;i<ntrarr;i++){
340 AliVTrack *jtrack=static_cast<AliVTrack*>(trackArr->At(i));
341 //reusing histograms
342 hPtJetTrks->Fill(jtrack->Pt());
343 hPhiJetTrks->Fill(jtrack->Phi());
344 hEtaJetTrks->Fill(jtrack->Eta());
345 hEjetTrks->Fill(jtrack->E());
346 }
347
348
349 //option to use only the leading jet
350 if(fLeadingJetOnly){
351 for (Int_t iJetsL = 0; iJetsL<njets; iJetsL++) {
352 AliEmcalJet* jetL = (AliEmcalJet*)GetJetFromArray(iJetsL);
353 ptjet = jetL->Pt();
354 if(ptjet>leadingJet ) leadingJet = ptjet;
355
356 }
357 }
358
359 Int_t cntjet=0;
360 //loop over jets and consider only the leading jet in the event
361 for (Int_t iJets = 0; iJets<njets; iJets++) {
362 //Printf("Jet N %d",iJets);
363 AliEmcalJet* jet = (AliEmcalJet*)GetJetFromArray(iJets);
364 //Printf("Corr task Accept Jet");
365 if(!AcceptJet(jet)) {
366 hstat->Fill(5);
367 continue;
368 }
369
370 //jets variables
371 ejet = jet->E();
372 phiJet = jet->Phi();
373 etaJet = jet->Eta();
374 ptjet = jet->Pt();
375
376 // choose the leading jet
377 if(fLeadingJetOnly && (ejet<leadingJet)) continue;
378 //used for normalization
379 hstat->Fill(3);
380 cntjet++;
381 // fill energy, eta and phi of the jet
382 hEjet ->Fill(ejet);
383 hPhiJet ->Fill(phiJet);
384 hEtaJet ->Fill(etaJet);
385 hPtJet ->Fill(ptjet);
386
387 //loop on jet particles
388 Int_t ntrjet= jet->GetNumberOfTracks();
389 for(Int_t itrk=0;itrk<ntrjet;itrk++){
390
391 AliPicoTrack* jetTrk=(AliPicoTrack*)jet->TrackAt(itrk,trackArr);
392 hdeltaRJetTracks->Fill(DeltaR(jet,jetTrk));
393
394 }//end loop on jet tracks
395
396 //Printf("N candidates %d ", candidates);
397 for(Int_t ic = 0; ic < candidates; ic++) {
398
399 // D* candidates
400 AliVParticle* charm=0x0;
401 charm=(AliVParticle*)candidatesArr->At(ic);
402 if(!charm) continue;
403 hstat->Fill(2);
404
405 FlagFlavour(charm, jet);
406 if (jet->TestFlavourTag(AliEmcalJet::kDStar)) hstat->Fill(4);
407
408 FillHistogramsRecoJetCorr(charm, jet);
409
410 }
411 //retrieve side band background candidates for Dstar
412 Int_t nsbcand = 0; if(sbcandArr) nsbcand=sbcandArr->GetEntriesFast();
413
414 for(Int_t ib=0;ib<nsbcand;ib++){
415 if(fCandidateType==kDstartoKpipi && !fUseMCInfo){
416 AliAODRecoCascadeHF *sbcand=(AliAODRecoCascadeHF*)sbcandArr->At(ib);
417 if(!sbcand) continue;
418 SideBandBackground(sbcand,jet);
419 }
420 if(fUseMCInfo){
421 AliAODRecoDecayHF* charmbg = 0x0;
422 charmbg=(AliAODRecoDecayHF*)candidatesArr->At(ib);
423 if(!charmbg) continue;
424 MCBackground(charmbg,jet);
425 }
426 }
427 } // end of jet loop
428
429 hNJetPerEv->Fill(cntjet);
430
431 PostData(1,fmyOutput);
432
433}
434
435//_______________________________________________________________________________
436
437void AliAnalysisTaskFlavourJetCorrelations::Terminate(Option_t*)
438{
439 // The Terminate() function is the last function to be called during
440 // a query. It always runs on the client, it can be used to present
441 // the results graphically or save the results to file.
442
443 Info("Terminate"," terminate");
444 AliAnalysisTaskSE::Terminate();
445
446 fmyOutput = dynamic_cast<TList*> (GetOutputData(1));
447 if (!fmyOutput) {
448 printf("ERROR: fmyOutput not available\n");
449 return;
450 }
451}
452
453//_______________________________________________________________________________
454
455void AliAnalysisTaskFlavourJetCorrelations::SetMassLimits(Double_t range, Int_t pdg){
456 Float_t mass=0;
457 Int_t abspdg=TMath::Abs(pdg);
458
459 mass=TDatabasePDG::Instance()->GetParticle(abspdg)->Mass();
460 // compute the Delta mass for the D*
461 if(fCandidateType==kDstartoKpipi){
462 Float_t mass1=0;
463 mass1=TDatabasePDG::Instance()->GetParticle(421)->Mass();
464 mass = mass-mass1;
465 }
466
467 fMinMass = mass-range;
468 fMaxMass = mass+range;
469
470 AliInfo(Form("Setting mass limits to %f, %f",fMinMass,fMaxMass));
471 if (fMinMass<0 || fMaxMass<=0 || fMaxMass<fMinMass) AliFatal("Wrong mass limits!\n");
472}
473
474//_______________________________________________________________________________
475
476void AliAnalysisTaskFlavourJetCorrelations::SetMassLimits(Double_t lowlimit, Double_t uplimit){
477 if(uplimit>lowlimit)
478 {
479 fMinMass = lowlimit;
480 fMaxMass = uplimit;
481 }
482 else{
483 printf("Error! Lower limit larger than upper limit!\n");
484 fMinMass = uplimit - uplimit*0.2;
485 fMaxMass = uplimit;
486 }
487}
488
489//_______________________________________________________________________________
490
491Bool_t AliAnalysisTaskFlavourJetCorrelations::SetD0WidthForDStar(Int_t nptbins,Float_t *width){
492 if(nptbins>30) {
493 AliInfo("Maximum number of bins allowed is 30!");
494 return kFALSE;
495 }
496 if(!width) return kFALSE;
497 for(Int_t ipt=0;ipt<nptbins;ipt++) fSigmaD0[ipt]=width[ipt];
498 return kTRUE;
499}
500
501//_______________________________________________________________________________
502
503Double_t AliAnalysisTaskFlavourJetCorrelations::Z(AliVParticle* part,AliEmcalJet* jet) const{
504 if(!part || !jet){
505 printf("Particle or jet do not exist!\n");
506 return -99;
507 }
508 Double_t p[3],pj[3];
509 Bool_t okpp=part->PxPyPz(p);
510 Bool_t okpj=jet->PxPyPz(pj);
511 if(!okpp || !okpj){
512 printf("Problems getting momenta\n");
513 return -999;
514 }
515 Double_t pjet=jet->P();
516 Double_t z=(p[0]*pj[0]+p[1]*pj[1]+p[2]*pj[2])/(pjet*pjet);
517 return z;
518}
519
520//_______________________________________________________________________________
521
522Bool_t AliAnalysisTaskFlavourJetCorrelations::DefineHistoForAnalysis(){
523
524 // Statistics
525 TH1I* hstat=new TH1I("hstat","Statistics",6,-0.5,5.5);
526 hstat->GetXaxis()->SetBinLabel(1,"N ev anal");
527 hstat->GetXaxis()->SetBinLabel(2,"N ev sel");
528 hstat->GetXaxis()->SetBinLabel(3,"N cand sel cuts");
529 hstat->GetXaxis()->SetBinLabel(4,"N jets");
530 hstat->GetXaxis()->SetBinLabel(5,"N cand in jet");
531 hstat->GetXaxis()->SetBinLabel(6,"N jet rej");
532 hstat->SetNdivisions(1);
533 fmyOutput->Add(hstat);
534
535 const Int_t nbinsmass=200;
536 const Int_t nbinsptjet=500;
537 const Int_t nbinsptD=100;
538 const Int_t nbinsz=100;
539 const Int_t nbinsphi=200;
540
541 const Float_t ptjetlims[2]={0.,200.};
542 const Float_t ptDlims[2]={0.,50.};
543 const Float_t zlims[2]={0.,1.2};
544 const Float_t philims[2]={0.,6.3};
545
546 if(fCandidateType==kDstartoKpipi)
547 {
548
549 TH2F* hDiffSideBand = new TH2F("hDiffSideBand","M(kpipi)-M(kpi) Side Band Background",nbinsmass,fMinMass,fMaxMass,nbinsptD, ptDlims[0],ptDlims[1]);
550 hDiffSideBand->SetStats(kTRUE);
551 hDiffSideBand->GetXaxis()->SetTitle("M(kpipi)-M(Kpi) GeV");
552 hDiffSideBand->GetYaxis()->SetTitle("p_{t}^{D} (GeV/c)");
553 hDiffSideBand->Sumw2();
554 fmyOutput->Add(hDiffSideBand);
555
556
557 TH1F* hPtPion = new TH1F("hPtPion","Primary pions candidates pt ",500,0,10);
558 hPtPion->SetStats(kTRUE);
559 hPtPion->GetXaxis()->SetTitle("GeV/c");
560 hPtPion->GetYaxis()->SetTitle("Entries");
561 hPtPion->Sumw2();
562 fmyOutput->Add(hPtPion);
563
564 }
565
566 // jet related fistograms
567
568 TH1F* hEjetTrks = new TH1F("hEjetTrks", "Jet tracks energy distribution;Energy (GeV)",500,0,200);
569 hEjetTrks->Sumw2();
570 TH1F* hPhiJetTrks = new TH1F("hPhiJetTrks","Jet tracks #phi distribution; #phi (rad)", nbinsphi,philims[0],philims[1]);
571 hPhiJetTrks->Sumw2();
572 TH1F* hEtaJetTrks = new TH1F("hEtaJetTrks","Jet tracks #eta distribution; #eta", 100,-1.5,1.5);
573 hEtaJetTrks->Sumw2();
574 TH1F* hPtJetTrks = new TH1F("hPtJetTrks", "Jet tracks Pt distribution; p_{T} (GeV/c)",nbinsptjet,ptjetlims[0],ptjetlims[1]);
575 hPtJetTrks->Sumw2();
576
577 TH1F* hEjet = new TH1F("hEjet", "Jet energy distribution;Energy (GeV)",500,0,200);
578 hEjet->Sumw2();
579 TH1F* hPhiJet = new TH1F("hPhiJet","Jet #phi distribution; #phi (rad)", nbinsphi,philims[0],philims[1]);
580 hPhiJet->Sumw2();
581 TH1F* hEtaJet = new TH1F("hEtaJet","Jet #eta distribution; #eta", 100,-1.5,1.5);
582 hEtaJet->Sumw2();
583 TH1F* hPtJet = new TH1F("hPtJet", "Jet Pt distribution; p_{T} (GeV/c)",nbinsptjet,ptjetlims[0],ptjetlims[1]);
584 hPtJet->Sumw2();
585
586 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]);
587 hPtJetWithD->Sumw2();
588 //for the MC this histogram is filled with the real background
589 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]);
590 hPtJetWithDsb->Sumw2();
591
592 TH1F* hdeltaRJetTracks=new TH1F("hdeltaRJetTracks","Delta R of tracks in the jets",200, 0.,10.);
593 hdeltaRJetTracks->Sumw2();
594
595 TH1F* hNtrArr= new TH1F("hNtrArr", "Number of tracks in the array of jets; number of tracks",500,0,1000);
596 hNtrArr->Sumw2();
597 TH1F *hNJetPerEv=new TH1F("hNJetPerEv","Number of jets used per event; number of jets/ev",10,-0.5,9.5);
598 hNJetPerEv->Sumw2();
599
600 fmyOutput->Add(hEjetTrks);
601 fmyOutput->Add(hPhiJetTrks);
602 fmyOutput->Add(hEtaJetTrks);
603 fmyOutput->Add(hPtJetTrks);
604 fmyOutput->Add(hEjet);
605 fmyOutput->Add(hPhiJet);
606 fmyOutput->Add(hEtaJet);
607 fmyOutput->Add(hPtJet);
608 fmyOutput->Add(hPtJetWithD);
609 fmyOutput->Add(hPtJetWithDsb);
610 fmyOutput->Add(hdeltaRJetTracks);
611 fmyOutput->Add(hNtrArr);
612 fmyOutput->Add(hNJetPerEv);
613
614 TH1F* hDeltaRD=new TH1F("hDeltaRD","#Delta R distribution of D candidates selected;#Delta R",200, 0.,10.);
615 hDeltaRD->Sumw2();
616 fmyOutput->Add(hDeltaRD);
617
618 //background (side bands for the Dstar and like sign for D0)
619 fJetRadius=GetJetContainer(0)->GetJetRadius();
620 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]);
621 hInvMassptD->SetStats(kTRUE);
622 hInvMassptD->GetXaxis()->SetTitle("mass (GeV)");
623 hInvMassptD->GetYaxis()->SetTitle("p_{t}^{D} (GeV/c)");
624 hInvMassptD->Sumw2();
625
626 fmyOutput->Add(hInvMassptD);
627
628 if(fUseMCInfo){
629 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]);
630 hInvMassptDbg->GetXaxis()->SetTitle(Form("%s (GeV)",(fCandidateType==kDstartoKpipi) ? "M(Kpipi)" : "M(Kpi)"));
631 hInvMassptDbg->GetYaxis()->SetTitle("p_{t}^{D} (GeV/c)");
632 hInvMassptDbg->Sumw2();
633 fmyOutput->Add(hInvMassptDbg);
634
635 }
636 Double_t pi=TMath::Pi(), philims2[2];
637 philims2[0]=-pi*1./2.;
638 philims2[1]=pi*3./2.;
639 const Int_t nAxis=6;
640 const Int_t nbinsSparse[nAxis]={nbinsz,nbinsphi,nbinsptjet,nbinsptD,nbinsmass,2};
641 const Double_t minSparse[nAxis]={zlims[0],philims2[0],ptjetlims[0],ptDlims[0],fMinMass,-0.5};
642 const Double_t maxSparse[nAxis]={zlims[1],philims2[1],ptjetlims[1],ptDlims[1],fMaxMass, 1.5};
643 THnSparseF *hsDphiz=new THnSparseF("hsDphiz","Z and #Delta#phi vs p_{T}^{jet}, p_{T}^{D}, and mass", nAxis, nbinsSparse, minSparse, maxSparse);
644 hsDphiz->Sumw2();
645
646 fmyOutput->Add(hsDphiz);
647
648 PostData(1, fmyOutput);
649
650 return kTRUE;
651}
652
653//_______________________________________________________________________________
654
655void AliAnalysisTaskFlavourJetCorrelations::FillHistogramsRecoJetCorr(AliVParticle* candidate, AliEmcalJet *jet){
656
657 Double_t ptD=candidate->Pt();
658 Double_t ptjet=jet->Pt();
659 Double_t deltaR=DeltaR(candidate,jet);
660 Double_t deltaphi = jet->Phi()-candidate->Phi();
661 if(deltaphi<=-(TMath::Pi())/2) deltaphi = deltaphi+2*(TMath::Pi());
662 if(deltaphi>(3*(TMath::Pi()))/2) deltaphi = deltaphi-2*(TMath::Pi());
663 Double_t z=Z(candidate,jet);
664
665 TH1F* hDeltaRD=(TH1F*)fmyOutput->FindObject("hDeltaRD");
666 hDeltaRD->Fill(deltaR);
667 if(fUseReco){
668 if(fCandidateType==kD0toKpi) {
669 AliAODRecoDecayHF* dzero=(AliAODRecoDecayHF*)candidate;
670 FillHistogramsD0JetCorr(dzero,deltaphi,z,ptD,ptjet,deltaR, AODEvent());
671
672 }
673
674 if(fCandidateType==kDstartoKpipi) {
675 AliAODRecoCascadeHF* dstar = (AliAODRecoCascadeHF*)candidate;
676 FillHistogramsDstarJetCorr(dstar,deltaphi,z,ptD,ptjet,deltaR);
677
678 }
679 } else{ //generated level
680 //AliInfo("Non reco");
681 FillHistogramsMCGenDJetCorr(deltaphi,z,ptD,ptjet,deltaR);
682 }
683}
684
685//_______________________________________________________________________________
686
687void AliAnalysisTaskFlavourJetCorrelations::FillHistogramsD0JetCorr(AliAODRecoDecayHF* candidate, Double_t dPhi, Double_t z, Double_t ptD, Double_t ptj,Double_t deltaR, AliAODEvent* aodEvent){
688
689 //dPhi and z not used at the moment,but will be (re)added
690
691 Double_t masses[2]={0.,0.};
692 Int_t pdgdaughtersD0[2]={211,321};//pi,K
693 Int_t pdgdaughtersD0bar[2]={321,211};//K,pi
694
695 masses[0]=candidate->InvMass(fNProngs,(UInt_t*)pdgdaughtersD0); //D0
696 masses[1]=candidate->InvMass(fNProngs,(UInt_t*)pdgdaughtersD0bar); //D0bar
697
698 TH3F* hPtJetWithD=(TH3F*)fmyOutput->FindObject("hPtJetWithD");
699 THnSparseF* hsDphiz=(THnSparseF*)fmyOutput->FindObject("hsDphiz");
700 Double_t point[5]={z,dPhi,ptj,ptD,masses[0]};
701
702 Int_t isselected=fCuts->IsSelected(candidate,AliRDHFCuts::kAll,aodEvent);
703 if(isselected==1 || isselected==3) {
704
705 if(deltaR<fJetRadius) hPtJetWithD->Fill(ptj,masses[0],ptD);
706
707 FillMassHistograms(masses[0], ptD, deltaR);
708 hsDphiz->Fill(point,1.);
709 }
710 if(isselected>=2) {
711 if(deltaR<fJetRadius) hPtJetWithD->Fill(ptj,masses[1],ptD);
712
713 FillMassHistograms(masses[1], ptD, deltaR);
714 point[4]=masses[1];
715 hsDphiz->Fill(point,1.);
716 }
717
718}
719
720//_______________________________________________________________________________
721
722void AliAnalysisTaskFlavourJetCorrelations::FillHistogramsDstarJetCorr(AliAODRecoCascadeHF* dstar, Double_t dPhi, Double_t z, Double_t ptD, Double_t ptj, Double_t deltaR){
723 //dPhi and z not used at the moment,but will be (re)added
724
725 AliAODTrack *softpi = (AliAODTrack*)dstar->GetBachelor();
726 Double_t deltamass= dstar->DeltaInvMass();
727 //Double_t massD0= dstar->InvMassD0();
728
729
730 TH1F* hPtPion=(TH1F*)fmyOutput->FindObject("hPtPion");
731 hPtPion->Fill(softpi->Pt());
732
733 TH3F* hPtJetWithD=(TH3F*)fmyOutput->FindObject("hPtJetWithD");
734 THnSparseF* hsDphiz=(THnSparseF*)fmyOutput->FindObject("hsDphiz");
735 Int_t isSB=IsDzeroSideBand(dstar);
736
737 Double_t point[6]={z,dPhi,ptj,ptD,deltamass,isSB};
738
739 if(deltaR<fJetRadius) hPtJetWithD->Fill(ptj,deltamass,ptD);
740
741 FillMassHistograms(deltamass, ptD, deltaR);
742 hsDphiz->Fill(point,1.);
743
744}
745
746//_______________________________________________________________________________
747
748void AliAnalysisTaskFlavourJetCorrelations::FillHistogramsMCGenDJetCorr(Double_t dPhi,Double_t z,Double_t ptD,Double_t ptjet,Double_t deltaR){
749
750 Double_t pdgmass=0;
751 TH3F* hPtJetWithD=(TH3F*)fmyOutput->FindObject("hPtJetWithD");
752 THnSparseF* hsDphiz=(THnSparseF*)fmyOutput->FindObject("hsDphiz");
753 Double_t point[6]={z,dPhi,ptjet,ptD,pdgmass,0};
754
755 if(fCandidateType==kD0toKpi) pdgmass=TDatabasePDG::Instance()->GetParticle(421)->Mass();
756 if(fCandidateType==kDstartoKpipi) pdgmass=TDatabasePDG::Instance()->GetParticle(413)->Mass()-TDatabasePDG::Instance()->GetParticle(421)->Mass();
757 point[4]=pdgmass;
758
759 if(deltaR<fJetRadius) {
760 hPtJetWithD->Fill(ptjet,pdgmass,ptD); // candidates within a jet
761 hsDphiz->Fill(point,1.);
762 }
763
764}
765
766//_______________________________________________________________________________
767
768void AliAnalysisTaskFlavourJetCorrelations::FillMassHistograms(Double_t mass,Double_t ptD, Double_t deltaR){
769
770 if(deltaR<fJetRadius) {
771 TH2F* hInvMassptD=(TH2F*)fmyOutput->FindObject("hInvMassptD");
772 hInvMassptD->Fill(mass,ptD);
773 }
774}
775
776void AliAnalysisTaskFlavourJetCorrelations::FlagFlavour(AliVParticle *charm, AliEmcalJet *jet){
777 Double_t deltaR=DeltaR(charm, jet);
778 AliEmcalJet::EFlavourTag tag=AliEmcalJet::kDStar;
779 if (fCandidateType==kD0toKpi) tag=AliEmcalJet::kD0;
780 if (deltaR<fJetRadius) jet->AddFlavourTag(tag);
781
782 return;
783
784}
785
786//_______________________________________________________________________________
787
788void AliAnalysisTaskFlavourJetCorrelations::SideBandBackground(AliAODRecoCascadeHF *candDstar, AliEmcalJet *jet){
789
790 // D* side band background method. Two side bands, in M(Kpi) are taken at ~6 sigmas
791 // (expected detector resolution) on the left and right frm the D0 mass. Each band
792 // has a width of ~5 sigmas. Two band needed for opening angle considerations
793 TH2F* hDiffSideBand=(TH2F*)fmyOutput->FindObject("hDiffSideBand");
794 TH3F* hPtJetWithDsb=(TH3F*)fmyOutput->FindObject("hPtJetWithDsb");
795
796 Double_t deltaM=candDstar->DeltaInvMass();
797 //Printf("Inv mass = %f between %f and %f or %f and %f?",invM, sixSigmal,fourSigmal,fourSigmar,sixSigmar);
798 Double_t ptD=candDstar->Pt();
799 Double_t ptjet=jet->Pt();
800 Double_t dPhi=jet->Phi()-candDstar->Phi();
801 Double_t deltaR=DeltaR(candDstar,jet);
802 if(dPhi>TMath::Pi())dPhi = dPhi - 2.*TMath::Pi();
803 if(dPhi<(-1.*TMath::Pi()))dPhi = dPhi + 2.*TMath::Pi();
804
805 Int_t isSideBand=IsDzeroSideBand(candDstar);
806 //fill the background histogram with the side bands or when looking at MC with the real background
807 if(isSideBand==1){
808 hDiffSideBand->Fill(deltaM,ptD); // M(Kpipi)-M(Kpi) side band background
809 //hdeltaPhiDjaB->Fill(deltaM,ptD,dPhi);
810
811 if(deltaR<fJetRadius){ // evaluate in the near side
812 //hzptDB->Fill(Z(candDstar,jet),deltaM,ptD);
813 hPtJetWithDsb->Fill(ptjet,deltaM,ptD);
814 }
815 }
816}
817
818//_______________________________________________________________________________
819
820void AliAnalysisTaskFlavourJetCorrelations::MCBackground(AliAODRecoDecayHF *candbg, AliEmcalJet *jet){
821
822 //need mass, deltaR, pt jet, ptD
823 //two cases: D0 and Dstar
824
825 Int_t isselected=fCuts->IsSelected(candbg,AliRDHFCuts::kAll, AODEvent());
826 if(!isselected) return;
827
828 Double_t ptD=candbg->Pt();
829 Double_t ptjet=jet->Pt();
830 Double_t deltaR=DeltaR(candbg,jet);
831
832 TH2F* hInvMassptDbg=(TH2F*)fmyOutput->FindObject("hInvMassptDbg");
833 TH3F* hPtJetWithDsb=(TH3F*)fmyOutput->FindObject("hPtJetWithDsb");
834
835
836 if(fCandidateType==kDstartoKpipi){
837 AliAODRecoCascadeHF* dstarbg = (AliAODRecoCascadeHF*)candbg;
838 Double_t deltaM=dstarbg->DeltaInvMass();
839 hInvMassptDbg->Fill(deltaM,ptD);
840 if(deltaR<fJetRadius) hPtJetWithDsb->Fill(ptjet,deltaM,ptD);
841 }
842
843 if(fCandidateType==kD0toKpi){
844 Double_t masses[2]={0.,0.};
845 Int_t pdgdaughtersD0[2]={211,321};//pi,K
846 Int_t pdgdaughtersD0bar[2]={321,211};//K,pi
847
848 masses[0]=candbg->InvMass(fNProngs,(UInt_t*)pdgdaughtersD0); //D0
849 masses[1]=candbg->InvMass(fNProngs,(UInt_t*)pdgdaughtersD0bar); //D0bar
850
851
852 if(isselected==1 || isselected==3) {
853 if(deltaR<fJetRadius) hPtJetWithDsb->Fill(ptjet,masses[0],ptD);
854 hInvMassptDbg->Fill(masses[0],ptD);
855 }
856 if(isselected>=2) {
857 if(deltaR<fJetRadius) hPtJetWithDsb->Fill(ptjet,masses[1],ptD);
858 hInvMassptDbg->Fill(masses[1],ptD);
859 }
860
861
862 }
863}
864
865//_______________________________________________________________________________
866
867Float_t AliAnalysisTaskFlavourJetCorrelations::DeltaR(AliVParticle *p1, AliVParticle *p2) const {
868 //Calculate DeltaR between p1 and p2: DeltaR=sqrt(Delataphi^2+DeltaEta^2)
869
870 if(!p1 || !p2) return -1;
871 Double_t phi1=p1->Phi(),eta1=p1->Eta();
872 Double_t phi2 = p2->Phi(),eta2 = p2->Eta() ;
873
874 Double_t dPhi=phi1-phi2;
875 if(dPhi<=-(TMath::Pi())/2) dPhi = dPhi+2*(TMath::Pi());
876 if(dPhi>(3*(TMath::Pi()))/2) dPhi = dPhi-2*(TMath::Pi());
877
878 Double_t dEta=eta1-eta2;
879 Double_t deltaR=TMath::Sqrt(dEta*dEta + dPhi*dPhi );
880 return deltaR;
881
882}
883
884//_______________________________________________________________________________
885
886Int_t AliAnalysisTaskFlavourJetCorrelations::IsDzeroSideBand(AliAODRecoCascadeHF *candDstar){
887
888 Double_t ptD=candDstar->Pt();
889 Int_t bin = fCuts->PtBin(ptD);
890 if (bin < 0){
891 // /PWGHF/vertexingHF/AliRDHFCuts::PtBin(Double_t) const may return values below zero depending on config.
892 bin = 9999; // void result code for coverity (bin later in the code non-zero) - will coverity pick up on this?
893 return -1; // out of bounds
894 }
895
896 Double_t invM=candDstar->InvMassD0();
897 Double_t mPDGD0=TDatabasePDG::Instance()->GetParticle(421)->Mass();
898
899 Float_t fourSigmal= mPDGD0-4.*fSigmaD0[bin] , sixSigmal= mPDGD0-8.*fSigmaD0[bin];
900 Float_t fourSigmar= mPDGD0+4.*fSigmaD0[bin] , sixSigmar= mPDGD0+8.*fSigmaD0[bin];
901
902 if((invM>=sixSigmal && invM<fourSigmal) || (invM>fourSigmar && invM<=sixSigmar)) return 1;
903 else return 0;
904
905}