1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
20 #include <TInterpreter.h>
27 #include <TLorentzVector.h>
28 #include <TClonesArray.h>
29 #include "TDatabasePDG.h"
31 #include "AliAnalysisTaskJetSpectrum.h"
32 #include "AliAnalysisManager.h"
33 #include "AliJetFinder.h"
34 #include "AliJetHeader.h"
35 #include "AliJetReader.h"
36 #include "AliJetReaderHeader.h"
37 #include "AliUA1JetHeaderV1.h"
39 #include "AliESDEvent.h"
40 #include "AliAODEvent.h"
41 #include "AliAODHandler.h"
42 #include "AliAODTrack.h"
43 #include "AliAODJet.h"
44 #include "AliMCEventHandler.h"
45 #include "AliMCEvent.h"
47 #include "AliGenPythiaEventHeader.h"
48 #include "AliJetKineReaderHeader.h"
49 #include "AliGenCocktailEventHeader.h"
50 #include "AliInputEventHandler.h"
52 #include "AliAnalysisHelperJetTasks.h"
54 ClassImp(AliAnalysisTaskJetSpectrum)
56 AliAnalysisTaskJetSpectrum::AliAnalysisTaskJetSpectrum(): AliAnalysisTaskSE(),
61 fConfigRec("ConfigJets.C"),
65 fUseExternalWeightOnly(kFALSE),
66 fLimitGenJetEta(kFALSE),
71 fh1PtHard_Trials(0x0),
76 // Default constructor
77 for(int ij = 0;ij<kMaxJets;++ij){
78 fh1E[ij] = fh1PtRecIn[ij] = fh1PtRecOut[ij] = fh1PtGenIn[ij] = fh1PtGenOut[ij] = 0;
79 fh2PtFGen[ij] = fh2Frag[ij] = fh2FragLn[ij] = 0;
80 fh3PtRecGenHard[ij] = fh3PtRecGenHard_NoW[ij] = fh3RecEtaPhiPt[ij] = fh3RecEtaPhiPt_NoGen[ij] =fh3GenEtaPhiPt_NoFound[ij] = fh3GenEtaPhiPt[ij] = 0;
85 AliAnalysisTaskJetSpectrum::AliAnalysisTaskJetSpectrum(const char* name):
86 AliAnalysisTaskSE(name),
91 fConfigRec("ConfigJets.C"),
95 fUseExternalWeightOnly(kFALSE),
96 fLimitGenJetEta(kFALSE),
101 fh1PtHard_Trials(0x0),
106 // Default constructor
107 for(int ij = 0;ij<kMaxJets;++ij){
108 fh1E[ij] = fh1PtRecIn[ij] = fh1PtRecOut[ij] = fh1PtGenIn[ij] = fh1PtGenOut[ij] = 0;
109 fh2PtFGen[ij] = fh2Frag[ij] = fh2FragLn[ij] = 0;
111 fh3PtRecGenHard[ij] = fh3PtRecGenHard_NoW[ij] = fh3RecEtaPhiPt[ij] = fh3RecEtaPhiPt_NoGen[ij] =fh3GenEtaPhiPt_NoFound[ij] = fh3GenEtaPhiPt[ij] = 0;
114 DefineOutput(1, TList::Class());
120 void AliAnalysisTaskJetSpectrum::UserCreateOutputObjects()
124 // Create the output container
131 fAOD = dynamic_cast<AliAODEvent*>(InputEvent());
133 Printf("%s:%d AODEvent not found in Input Manager %d",(char*)__FILE__,__LINE__,fUseAODInput);
137 fJetHeaderRec = dynamic_cast<AliJetHeader*>(fInputHandler->GetTree()->GetUserInfo()->FindObject(Form("AliJetHeader_%s",fBranchRec.Data())));
139 Printf("%s:%d Jet Header not found in the Input",(char*)__FILE__,__LINE__);
143 // assume that the AOD is in the general output...
146 Printf("%s:%d AODEvent not found in the Output",(char*)__FILE__,__LINE__);
149 fJetHeaderRec = dynamic_cast<AliJetHeader*>(OutputTree()->GetUserInfo()->FindObject(Form("AliJetHeader_%s",fBranchRec.Data())));
151 Printf("%s:%d Jet Header not found in the Output",(char*)__FILE__,__LINE__);
154 if(fDebug>10)fJetHeaderRec->Dump();
160 if (fDebug > 1) printf("AnalysisTaskJetSpectrum::UserCreateOutputObjects() \n");
163 if(!fHistList)fHistList = new TList();
165 Bool_t oldStatus = TH1::AddDirectoryStatus();
166 TH1::AddDirectory(kFALSE);
171 const Int_t nBinPt = 100;
172 Double_t binLimitsPt[nBinPt+1];
173 for(Int_t iPt = 0;iPt <= nBinPt;iPt++){
175 binLimitsPt[iPt] = 0.0;
178 binLimitsPt[iPt] = binLimitsPt[iPt-1] + 2;
181 const Int_t nBinEta = 22;
182 Double_t binLimitsEta[nBinEta+1];
183 for(Int_t iEta = 0;iEta<=nBinEta;iEta++){
185 binLimitsEta[iEta] = -2.2;
188 binLimitsEta[iEta] = binLimitsEta[iEta-1] + 0.2;
192 const Int_t nBinPhi = 90;
193 Double_t binLimitsPhi[nBinPhi+1];
194 for(Int_t iPhi = 0;iPhi<=nBinPhi;iPhi++){
196 binLimitsPhi[iPhi] = 0;
199 binLimitsPhi[iPhi] = binLimitsPhi[iPhi-1] + 1/(Float_t)nBinPhi * TMath::Pi()*2;
203 const Int_t nBinFrag = 25;
206 fh1PtHard = new TH1F("fh1PtHard","PYTHIA Pt hard;p_{T,hard}",nBinPt,binLimitsPt);
208 fh1PtHard_NoW = new TH1F("fh1PtHard_NoW","PYTHIA Pt hard no weight;p_{T,hard}",nBinPt,binLimitsPt);
210 fh1PtHard_Trials = new TH1F("fh1PtHard_Trials","PYTHIA Pt hard weight with trials;p_{T,hard}",nBinPt,binLimitsPt);
212 fh1NGenJets = new TH1F("fh1NGenJets","N generated jets",20,-0.5,19.5);
214 fh1NRecJets = new TH1F("fh1NRecJets","N reconstructed jets",20,-0.5,19.5);
217 for(int ij = 0;ij<kMaxJets;++ij){
218 fh1E[ij] = new TH1F(Form("fh1E_j%d",ij),"Jet Energy;E_{jet} (GeV);N",nBinPt,binLimitsPt);
219 fh1PtRecIn[ij] = new TH1F(Form("fh1PtRecIn_j%d",ij),"rec p_T input ;p_{T,rec}",nBinPt,binLimitsPt);
220 fh1PtRecOut[ij] = new TH1F(Form("fh1PtRecOut_j%d",ij),"rec p_T output jets;p_{T,rec}",nBinPt,binLimitsPt);
221 fh1PtGenIn[ij] = new TH1F(Form("fh1PtGenIn_j%d",ij),"found p_T input ;p_{T,gen}",nBinPt,binLimitsPt);
222 fh1PtGenOut[ij] = new TH1F(Form("fh1PtGenOut_j%d",ij),"found p_T output jets;p_{T,gen}",nBinPt,binLimitsPt);
225 fh2PtFGen[ij] = new TH2F(Form("fh2PtFGen_j%d",ij),"Pt Found vs. gen;p_{T,rec} (GeV/c);p_{T,gen} (GeV/c)",
226 nBinPt,binLimitsPt,nBinPt,binLimitsPt);
233 fh3PtRecGenHard[ij] = new TH3F(Form("fh3PtRecGenHard_j%d",ij), "Pt hard vs. pt gen vs. pt rec;p_{T,rec};p_{T,gen} (GeV/c);p_{T,hard} (GeV/c)",nBinPt,binLimitsPt,nBinPt,binLimitsPt,nBinPt,binLimitsPt);
237 fh3PtRecGenHard_NoW[ij] = new TH3F(Form("fh3PtRecGenHard_NoW_j%d",ij), "Pt hard vs. pt gen vs. pt rec no weight;p_{T,rec};p_{T,gen} (GeV/c);p_{T,hard} (GeV/c)",nBinPt,binLimitsPt,nBinPt,binLimitsPt,nBinPt,binLimitsPt);
240 fh2Frag[ij] = new TH2F(Form("fh2Frag_j%d",ij),"Jet Fragmentation;x=E_{i}/E_{jet};E_{jet};1/N_{jet}dN_{ch}/dx",
241 nBinFrag,0.,1.,nBinPt,binLimitsPt);
243 fh2FragLn[ij] = new TH2F(Form("fh2FragLn_j%d",ij),"Jet Fragmentation Ln;#xi=ln(E_{jet}/E_{i});E_{jet}(GeV);1/N_{jet}dN_{ch}/d#xi",
244 nBinFrag,0.,10.,nBinPt,binLimitsPt);
246 fh3RecEtaPhiPt[ij] = new TH3F(Form("fh3RecEtaPhiPt_j%d",ij),"Rec eta, phi, pt; #eta; #phi; p_{T,rec} (GeV/c)",
247 nBinEta,binLimitsEta,nBinPhi,binLimitsPhi,nBinPt,binLimitsPt);
251 fh3RecEtaPhiPt_NoGen[ij] = new TH3F(Form("fh3RecEtaPhiPt_NoGen_j%d",ij),"No generated for found jet Rec eta, phi, pt; #eta; #phi; p_{T,rec} (GeV/c)",
252 nBinEta,binLimitsEta,nBinPhi,binLimitsPhi,nBinPt,binLimitsPt);
255 fh3GenEtaPhiPt_NoFound[ij] = new TH3F(Form("fh3GenEtaPhiPt_NoFound_j%d",ij),"No found for generated jet eta, phi, pt; #eta; #phi; p_{T,rec} (GeV/c)",
256 nBinEta,binLimitsEta,nBinPhi,binLimitsPhi,nBinPt,binLimitsPt);
260 fh3GenEtaPhiPt[ij] = new TH3F(Form("fh3GenEtaPhiPt_j%d",ij),"Gen eta, phi, pt; #eta; #phi; p_{T,rec} (GeV/c)",
261 nBinEta,binLimitsEta,nBinPhi,binLimitsPhi,nBinPt,binLimitsPt);
265 const Int_t saveLevel = 2; // large save level more histos
268 fHistList->Add(fh1PtHard);
269 fHistList->Add(fh1PtHard_NoW);
270 fHistList->Add(fh1PtHard_Trials);
271 fHistList->Add(fh1NGenJets);
272 fHistList->Add(fh1NRecJets);
273 for(int ij = 0;ij<kMaxJets;++ij){
274 fHistList->Add(fh1E[ij]);
275 fHistList->Add(fh1PtRecIn[ij]);
276 fHistList->Add(fh1PtRecOut[ij]);
277 fHistList->Add(fh1PtGenIn[ij]);
278 fHistList->Add(fh1PtGenOut[ij]);
279 fHistList->Add(fh2PtFGen[ij]);
281 fHistList->Add(fh3RecEtaPhiPt[ij]);
282 fHistList->Add(fh3RecEtaPhiPt_NoGen[ij]);
283 fHistList->Add(fh3GenEtaPhiPt_NoFound[ij]);
284 fHistList->Add(fh3GenEtaPhiPt[ij]);
289 // =========== Switch on Sumw2 for all histos ===========
290 for (Int_t i=0; i<fHistList->GetEntries(); ++i) {
291 TH1 *h1 = dynamic_cast<TH1*>(fHistList->At(i));
293 // Printf("%s ",h1->GetName());
298 TH1::AddDirectory(oldStatus);
302 void AliAnalysisTaskJetSpectrum::Init()
308 Printf(">>> AnalysisTaskJetSpectrum::Init() debug level %d\n",fDebug);
309 if (fDebug > 1) printf("AnalysisTaskJetSpectrum::Init() \n");
313 void AliAnalysisTaskJetSpectrum::UserExec(Option_t */*option*/)
316 // Execute analysis for current event
321 if (fDebug > 1)printf("Analysing event # %5d\n", (Int_t) fEntry);
324 AliAODHandler *aodH = dynamic_cast<AliAODHandler*>(AliAnalysisManager::GetAnalysisManager()->GetOutputEventHandler());
327 Printf("%s:%d no output aodHandler found Jet",(char*)__FILE__,__LINE__);
332 // aodH->SelectEvent(kTRUE);
334 // ========= These pointers need to be valid in any case =======
338 AliUA1JetHeaderV1 *jhRec = dynamic_cast<AliUA1JetHeaderV1*>(fJetFinderRec->GetHeader());
340 Printf("%s:%d No Jet Header found",(char*)__FILE__,__LINE__);
344 if (fDebug > 10)Printf("%s:%d",(char*)__FILE__,__LINE__);
345 TClonesArray *aodRecJets = dynamic_cast<TClonesArray*>(fAOD->FindListObject(fBranchRec.Data()));
347 Printf("%s:%d no reconstructed Jet array with name %s in AOD",(char*)__FILE__,__LINE__,fBranchRec.Data());
351 // ==== General variables needed
354 // We use statice array, not to fragment the memory
355 AliAODJet genJets[kMaxJets];
357 AliAODJet recJets[kMaxJets];
362 Double_t nTrials = 1; // Trials for MC trigger weigth for real data
364 if(fUseExternalWeightOnly){
365 eventW = fExternalWeight;
369 if (fDebug > 10)Printf("%s:%d",(char*)__FILE__,__LINE__);
370 if((fAnalysisType&kAnaMC)==kAnaMC){
371 // this is the part we only use when we have MC information
372 AliMCEvent* mcEvent = MCEvent();
373 // AliStack *pStack = 0;
375 Printf("%s:%d no mcEvent",(char*)__FILE__,__LINE__);
378 AliGenPythiaEventHeader* pythiaGenHeader = AliAnalysisHelperJetTasks::GetPythiaEventHeader(mcEvent);
379 if(!pythiaGenHeader){
383 nTrials = pythiaGenHeader->Trials();
384 ptHard = pythiaGenHeader->GetPtHard();
387 if(fDebug>20)AliAnalysisHelperJetTasks::PrintStack(mcEvent);
389 if(!fUseExternalWeightOnly){
390 // case were we combine more than one p_T hard bin...
393 // fetch the pythia generated jets only to be used here
394 Int_t nPythiaGenJets = pythiaGenHeader->NTriggerJets();
395 AliAODJet pythiaGenJets[kMaxJets];
397 for(int ip = 0;ip < nPythiaGenJets;++ip){
398 if(iCount>=kMaxJets)continue;
400 pythiaGenHeader->TriggerJet(ip,p);
401 pythiaGenJets[iCount].SetPxPyPzE(p[0],p[1],p[2],p[3]);
404 if(pythiaGenJets[iCount].Eta()>fJetHeaderRec->GetJetEtaMax()||
405 pythiaGenJets[iCount].Eta()<fJetHeaderRec->GetJetEtaMin())continue;
409 if(fBranchGen.Length()==0){
410 // if we have MC particles and we do not read from the aod branch
411 // use the pythia jets
412 genJets[iCount].SetPxPyPzE(p[0],p[1],p[2],p[3]);
416 if(fBranchGen.Length()==0)nGenJets = iCount;
418 }// (fAnalysisType&kMC)==kMC)
420 if (fDebug > 10)Printf("%s:%d",(char*)__FILE__,__LINE__);
421 fh1PtHard->Fill(ptHard,eventW);
422 fh1PtHard_NoW->Fill(ptHard,1);
423 fh1PtHard_Trials->Fill(ptHard,nTrials);
425 // If we set a second branch for the input jets fetch this
426 if(fBranchGen.Length()>0){
427 TClonesArray *aodGenJets = dynamic_cast<TClonesArray*>(fAOD->FindListObject(fBranchGen.Data()));
430 for(int ig = 0;ig < aodGenJets->GetEntries();++ig){
431 if(iCount>=kMaxJets)continue;
432 AliAODJet *tmp = dynamic_cast<AliAODJet*>(aodGenJets->At(ig));
435 if(tmp->Eta()>fJetHeaderRec->GetJetEtaMax()||
436 tmp->Eta()<fJetHeaderRec->GetJetEtaMin())continue;
438 genJets[iCount] = *tmp;
444 Printf("%s:%d Generated jet branch %s not found",(char*)__FILE__,__LINE__,fBranchGen.Data());
448 fh1NGenJets->Fill(nGenJets);
449 // We do not want to exceed the maximum jet number
450 nGenJets = TMath::Min(nGenJets,kMaxJets);
452 // Fetch the reconstructed jets...
455 nRecJets = aodRecJets->GetEntries();
456 fh1NRecJets->Fill(nRecJets);
457 nRecJets = TMath::Min(nRecJets,kMaxJets);
459 for(int ir = 0;ir < nRecJets;++ir){
460 AliAODJet *tmp = dynamic_cast<AliAODJet*>(aodRecJets->At(ir));
466 if (fDebug > 10)Printf("%s:%d",(char*)__FILE__,__LINE__);
468 Int_t iGenIndex[kMaxJets]; // Index of the generated jet for i-th rec -1 if none
469 Int_t iRecIndex[kMaxJets]; // Index of the rec jet for i-th gen -1 if none
471 for(int i = 0;i<kMaxJets;++i){
472 iGenIndex[i] = iRecIndex[i] = -1;
476 GetClosestJets(genJets,nGenJets,recJets,nRecJets,
477 iGenIndex,iRecIndex,fDebug);
478 if (fDebug > 10)Printf("%s:%d",(char*)__FILE__,__LINE__);
481 for(int i = 0;i<kMaxJets;++i){
482 if(iGenIndex[i]>=0)Printf("iGenFound: %d -> %d",i,iGenIndex[i]);
483 if(iRecIndex[i]>=0)Printf("iRecFound: %d -> %d",i,iRecIndex[i]);
487 // loop over reconstructed jets
488 for(int ir = 0;ir < nRecJets;++ir){
489 Double_t ptRec = recJets[ir].Pt();
490 Double_t phiRec = recJets[ir].Phi();
491 if(phiRec<0)phiRec+=TMath::Pi()*2.;
492 Double_t etaRec = recJets[ir].Eta();
494 fh1E[ir]->Fill(recJets[ir].E(),eventW);
495 fh1PtRecIn[ir]->Fill(ptRec,eventW);
496 fh3RecEtaPhiPt[ir]->Fill(etaRec,phiRec,ptRec,eventW);
498 Int_t ig = iGenIndex[ir];
499 if(ig>=0&&ig<nGenJets){
500 fh1PtRecOut[ir]->Fill(ptRec,eventW);
501 Double_t ptGen = genJets[ig].Pt();
502 fh2PtFGen[ir]->Fill(ptRec,ptGen,eventW);
503 fh3PtRecGenHard[ir]->Fill(ptRec,ptGen,ptHard,eventW);
504 fh3PtRecGenHard_NoW[ir]->Fill(ptRec,ptGen,ptHard,1);
507 fh3RecEtaPhiPt_NoGen[ir]->Fill(etaRec,phiRec,ptRec,eventW);
509 }// loop over reconstructed jets
512 if (fDebug > 10)Printf("%s:%d",(char*)__FILE__,__LINE__);
513 for(int ig = 0;ig < nGenJets;++ig){
514 Double_t ptGen = genJets[ig].Pt();
516 Double_t phiGen = genJets[ig].Phi();
517 if(phiGen<0)phiGen+=TMath::Pi()*2.;
518 Double_t etaGen = genJets[ig].Eta();
519 fh3GenEtaPhiPt[ig]->Fill(etaGen,phiGen,ptGen,eventW);
520 fh1PtGenIn[ig]->Fill(ptGen,eventW);
521 Int_t ir = iRecIndex[ig];
522 if(ir>=0&&ir<nRecJets){
523 fh1PtGenOut[ig]->Fill(ptGen,eventW);
526 fh3GenEtaPhiPt_NoFound[ig]->Fill(etaGen,phiGen,ptGen,eventW);
528 }// loop over reconstructed jets
530 if (fDebug > 10)Printf("%s:%d",(char*)__FILE__,__LINE__);
531 PostData(1, fHistList);
534 void AliAnalysisTaskJetSpectrum::Terminate(Option_t */*option*/)
536 // Terminate analysis
538 if (fDebug > 1) printf("AnalysisJetSpectrum: Terminate() \n");
542 void AliAnalysisTaskJetSpectrum::GetClosestJets(AliAODJet *genJets,Int_t &nGenJets,
543 AliAODJet *recJets,Int_t &nRecJets,
544 Int_t *iGenIndex,Int_t *iRecIndex,Int_t iDebug){
547 // Relate the two input jet Arrays
551 // The association has to be unique
552 // So check in two directions
553 // find the closest rec to a gen
554 // and check if there is no other rec which is closer
555 // Caveat: Close low energy/split jets may disturb this correlation
557 // Idea: search in two directions generated e.g (a--e) and rec (1--3)
558 // Fill a matrix with Flags (1 for closest rec jet, 2 for closest rec jet
559 // in the end we have something like this
573 // Only entries with "3" match from both sides
577 Int_t iFlag[kMaxJets][kMaxJets];
581 for(int i = 0;i < kMaxJets;++i){
584 for(int j = 0;j < kMaxJets;++j)iFlag[i][j] = 0;
587 if(nRecJets==0)return;
588 if(nGenJets==0)return;
590 const Float_t maxDist = 1.0;
591 // find the closest distance to the generated
592 for(int ig = 0;ig<nGenJets;++ig){
593 Float_t dist = maxDist;
594 if(iDebug>1)Printf("Gen (%d) p_T %3.3f eta %3.3f ph %3.3f ",ig,genJets[ig].Pt(),genJets[ig].Eta(),genJets[ig].Phi());
595 for(int ir = 0;ir<nRecJets;++ir){
596 Double_t dR = genJets[ig].DeltaR(&recJets[ir]);
597 if(iDebug>1)Printf("Rec (%d) p_T %3.3f eta %3.3f ph %3.3f ",ir,recJets[ir].Pt(),recJets[ir].Eta(),recJets[ir].Phi());
598 if(iDebug>1)Printf("Distance (%d)--(%d) %3.3f ",ig,ir,dR);
604 if(iRecIndex[ig]>=0)iFlag[ig][iRecIndex[ig]]+=1;
609 for(int ir = 0;ir<nRecJets;++ir){
610 Float_t dist = maxDist;
611 for(int ig = 0;ig<nGenJets;++ig){
612 Double_t dR = genJets[ig].DeltaR(&recJets[ir]);
618 if(iGenIndex[ir]>=0)iFlag[iGenIndex[ir]][ir]+=2;
623 // check for "true" correlations
625 if(iDebug>1)Printf(">>>>>> Matrix");
627 for(int ig = 0;ig<nGenJets;++ig){
628 for(int ir = 0;ir<nRecJets;++ir){
630 if(iDebug>1)printf("XFL %d ",iFlag[ig][ir]);
633 // we have a uniqie correlation
634 if(iFlag[ig][ir]==3){
640 // we just take the correlation from on side
641 if((iFlag[ig][ir]&2)==2){
644 if((iFlag[ig][ir]&1)==1){
649 if(iDebug>1)printf("\n");