3 // Task for topological study of three jet events by sona
9 /**************************************************************************
10 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
12 * Author: The ALICE Off-line Project. *
13 * Contributors are mentioned in the code where appropriate. *
15 * Permission to use, copy, modify and distribute this software and its *
16 * documentation strictly for non-commercial purposes is hereby granted *
17 * without fee, provided that the above copyright notice appears in all *
18 * copies and that both the copyright notice and this permission notice *
19 * appear in the supporting documentation. The authors make no claims *
20 * about the suitability of this software for any purpose. It is *
21 * provided "as is" without express or implied warranty. *
22 **************************************************************************/
30 #include <TLorentzVector.h>
31 #include <TClonesArray.h>
32 #include <TRefArray.h>
35 #include <TMatrixDSym.h>
36 #include <TMatrixDSymEigen.h>
39 #include "AliAnalysisTaskThreeJets.h"
40 #include "AliAnalysisManager.h"
41 #include "AliAODEvent.h"
42 #include "AliAODVertex.h"
43 #include "AliAODHandler.h"
44 #include "AliAODTrack.h"
45 #include "AliAODJet.h"
46 #include "AliGenPythiaEventHeader.h"
47 #include "AliMCEvent.h"
51 #include "AliAnalysisHelperJetTasks.h"
54 ClassImp(AliAnalysisTaskThreeJets)
56 AliAnalysisTaskThreeJets::AliAnalysisTaskThreeJets() : AliAnalysisTaskSE(),
122 fhdPhiThrustGen(0x0),
123 fhdPhiThrustGenALL(0x0),
125 fhdPhiThrustRec(0x0),
126 fhdPhiThrustRecALL(0x0)
131 AliAnalysisTaskThreeJets::AliAnalysisTaskThreeJets(const char * name):
132 AliAnalysisTaskSE(name),
139 fUseAODInput(kFALSE),
198 fhdPhiThrustGen(0x0),
199 fhdPhiThrustGenALL(0x0),
201 fhdPhiThrustRec(0x0),
202 fhdPhiThrustRecALL(0x0)
204 DefineOutput(1, TList::Class());
209 Bool_t AliAnalysisTaskThreeJets::Notify()
212 // Implemented Notify() to read the cross sections
213 // and number of trials from pyxsec.root
215 TTree *tree = AliAnalysisManager::GetAnalysisManager()->GetTree();
218 TFile *curfile = tree->GetCurrentFile();
220 Error("Notify","No current file");
224 TString fileName(curfile->GetName());
225 if(fileName.Contains("AliESDs.root")){
226 fileName.ReplaceAll("AliESDs.root", "pyxsec.root");
228 else if(fileName.Contains("AliAOD.root")){
229 fileName.ReplaceAll("AliAOD.root", "pyxsec.root");
231 else if(fileName.Contains("galice.root")){
232 // for running with galice and kinematics alone...
233 fileName.ReplaceAll("galice.root", "pyxsec.root");
235 TFile *fxsec = TFile::Open(fileName.Data());
237 Printf("%s:%d %s not found in the Input",(char*)__FILE__,__LINE__,fileName.Data());
238 // no a severe condition
241 TTree *xtree = (TTree*)fxsec->Get("Xsection");
243 Printf("%s:%d tree not found in the pyxsec.root",(char*)__FILE__,__LINE__);
245 xtree->SetBranchAddress("xsection",&fXsection);
246 xtree->SetBranchAddress("ntrials",&ntrials);
254 //___________________________________________________________________________________________________________________________________
255 void AliAnalysisTaskThreeJets::UserCreateOutputObjects()
258 // Create the output container
260 // Printf("Analysing event %s :: # %5d\n", gSystem->pwd(), (Int_t) fEntry);
263 fAOD = dynamic_cast<AliAODEvent*>(InputEvent());
265 Printf("%s:%d AODEvent not found in Input Manager %d",(char*)__FILE__,__LINE__,fUseAODInput);
270 // assume that the AOD is in the general output...
273 Printf("%s:%d AODEvent not found in the Output",(char*)__FILE__,__LINE__);
278 printf("AnalysisTaskJetSpectrum::UserCreateOutputObjects() \n");
282 fhX3X4Gen = new TH2F("X3vsX4Gen", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
283 fhX3X4Gen->SetXTitle("X_{3}");
284 fhX3X4Gen->SetYTitle("X_{4}");
286 fList->Add(fhX3X4Gen);
288 fhX3X4Rec = new TH2F("X3vsX4Rec", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
289 fhX3X4Rec->SetXTitle("X_{3}");
290 fhX3X4Rec->SetYTitle("X_{4}");
292 fList->Add(fhX3X4Rec);
294 fhMu35Rec = new TH1F("Mu35Rec", "", 20,0.1,0.8);
296 fhMu35Rec->SetXTitle("#mu_{35}");
297 fhMu35Rec->SetYTitle("#frac{dN}{d#mu_{35Rec}}");
298 fList->Add(fhMu35Rec);
300 fhMu34Rec = new TH1F("Mu34Rec", "", 20,0.5,1);
302 fhMu34Rec->SetXTitle("#mu_{34}");
303 fhMu34Rec->SetYTitle("#frac{dN}{d#mu_{34}}");
304 fList->Add(fhMu34Rec);
306 fhMu45Rec = new TH1F("Mu45Rec", "", 20,0,0.65);
308 fhMu45Rec->SetXTitle("#mu_{45}");
309 fhMu45Rec->SetYTitle("#frac{dN}{d#mu_{45}}");
310 fList->Add(fhMu45Rec);
312 fhMu35Gen = new TH1F("Mu35Gen", "", 20,0.1,0.8);
314 fhMu35Gen->SetXTitle("#mu_{35Gen}");
315 fhMu35Gen->SetYTitle("#frac{dN}{d#mu_{35Gen}}");
316 fList->Add(fhMu35Gen);
318 fhMu34Gen = new TH1F("Mu34Gen", "", 20,0.5,1);
320 fhMu34Gen->SetXTitle("#mu_{34Gen}");
321 fhMu34Gen->SetYTitle("#frac{dN}{d#mu_{34Gen}}");
322 fList->Add(fhMu34Gen);
324 fhMu45Gen = new TH1F("Mu45Gen", "", 20,0,0.65);
326 fhMu45Gen->SetXTitle("#mu_{45Gen}");
327 fhMu45Gen->SetYTitle("#frac{dN}{d#mu_{45}}");
328 fList->Add(fhMu45Gen);
330 fhInOut = new TH1I("InOut", "", 6, 0, 6);
331 fhInOut->SetXTitle("#RecJets_{GenJets=3}");
332 fhInOut->SetYTitle("#Entries");
335 fhThrustGen2 = new TH1F("ThrustGen2", "", 50, 0.5, 1);
336 fhThrustGen2->Sumw2();
337 fList->Add(fhThrustGen2);
339 fhThrustGen3 = new TH1F("ThrustGen3", "", 50, 0.5, 1);
340 fhThrustGen3->Sumw2();
341 fList->Add(fhThrustGen3);
343 fhThrustRec2 = new TH1F("ThrustRec2", "", 50, 0.5, 1);
344 fhThrustRec2->Sumw2();
345 fList->Add(fhThrustRec2);
347 fhThrustRec3 = new TH1F("ThrustRec3", "", 50, 0.5, 1);
348 fhThrustRec3->Sumw2();
349 fList->Add(fhThrustRec3);
351 fhCGen2 = new TH1F("CGen2", "", 100, 0, 1);
355 fhCGen3 = new TH1F("CGen3", "", 100, 0, 1);
359 fhCRec2 = new TH1F("CRec2", "", 100, 0, 1);
363 fhCRec3 = new TH1F("CRec3", "", 100, 0, 1);
367 fhSGen2 = new TH1F("SGen2", "", 100, 0, 1);
370 fhSGen3 = new TH1F("SGen3", "", 100, 0, 1);
373 fhSRec2 = new TH1F("SRec2", "", 100, 0, 1);
376 fhSRec3 = new TH1F("SRec3", "", 100, 0, 1);
379 fhAGen2 = new TH1F("AGen2", "", 50, 0, 0.5);
382 fhAGen3 = new TH1F("AGen3", "", 50, 0, 0.5);
385 fhARec2 = new TH1F("ARec2", "", 50, 0, 0.5);
388 fhARec3 = new TH1F("ARec3", "", 50, 0, 0.5);
391 fhX3 = new TH2F("X3", "", 22, 0.6, 1.02, 100, 0, 1);
392 fhX3->SetYTitle("|X_{3}^{MC} - X_{3}^{AOD}|/X_{3}^{MC}");
393 fhX3->SetXTitle("X_{3}");
397 fhX4 = new TH2F("X4", "",33, 0.4, 1.02, 100, 0, 1);
398 fhX4->SetYTitle("|X_{4}^{MC} - X_{4}^{AOD}|/X_{4}^{MC}");
399 fhX4->SetXTitle("X_{4}");
403 fhX5 = new TH2F("X5", "",100, 0., 1., 100, 0, 1);
404 fhX5->SetYTitle("|X_{5}^{MC} - X_{5}^{AOD}|/X_{5}^{MC}");
405 fhX5->SetXTitle("X_{5}");
409 fhXSec = new TProfile("XSec", "", 200, 0, 200, 0, 1);
412 fhX3X4Rec60 = new TH2F("X3vsX4Rec60", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
413 fhX3X4Rec60->SetXTitle("X_{3}");
414 fhX3X4Rec60->SetYTitle("X_{4}");
415 fhX3X4Rec60->Sumw2();
416 fList->Add(fhX3X4Rec60);
418 fhX3X4Rec60100 = new TH2F("X3vsX4Rec60100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
419 fhX3X4Rec60100->SetXTitle("X_{3}");
420 fhX3X4Rec60100->SetYTitle("X_{4}");
421 fhX3X4Rec60100->Sumw2();
422 fList->Add(fhX3X4Rec60100);
424 fhX3X4Rec100 = new TH2F("X3vsX4Rec100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
425 fhX3X4Rec100->SetXTitle("X_{3}");
426 fhX3X4Rec100->SetYTitle("X_{4}");
427 fhX3X4Rec100->Sumw2();
428 fList->Add(fhX3X4Rec100);
430 fhX3X4Gen60 = new TH2F("X3vsX4Gen60", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
431 fhX3X4Gen60->SetXTitle("X_{3}");
432 fhX3X4Gen60->SetYTitle("X_{4}");
433 fhX3X4Gen60->Sumw2();
434 fList->Add(fhX3X4Gen60);
436 fhX3X4Gen60100 = new TH2F("X3vsX4Gen60100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
437 fhX3X4Gen60100->SetXTitle("X_{3}");
438 fhX3X4Gen60100->SetYTitle("X_{4}");
439 fhX3X4Gen60100->Sumw2();
440 fList->Add(fhX3X4Gen60100);
442 fhX3X4Gen100 = new TH2F("X3vsX4Gen100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
443 fhX3X4Gen100->SetXTitle("X_{3}");
444 fhX3X4Gen100->SetYTitle("X_{4}");
445 fhX3X4Gen100->Sumw2();
446 fList->Add(fhX3X4Gen100);
448 fhdPhiThrustGen = new TH2F("dPhiThrustGen", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
449 fhdPhiThrustGen->Sumw2();
450 fList->Add(fhdPhiThrustGen);
452 fhdPhiThrustGenALL = new TH2F("dPhiThrustGenALL", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
453 fhdPhiThrustGenALL->Sumw2();
454 fList->Add(fhdPhiThrustGenALL);
456 fhdPhiThrustRec = new TH2F("dPhiThrustRec", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
457 fhdPhiThrustRec->Sumw2();
458 fList->Add(fhdPhiThrustRec);
460 fhdPhiThrustRecALL = new TH2F("dPhiThrustRecALL", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
461 fhdPhiThrustRecALL->Sumw2();
462 fList->Add(fhdPhiThrustRecALL);
464 Printf("UserCreateOutputObjects finished\n");
467 //__________________________________________________________________________________________________________________________________________
468 void AliAnalysisTaskThreeJets::Init()
470 printf("AliAnalysisJetCut::Init() \n");
473 //____________________________________________________________________________________________________________________________________________
474 void AliAnalysisTaskThreeJets::UserExec(Option_t * )
476 // if (fDebug > 1) printf("Analysing event # %5d\n", (Int_t) fEntry);
479 //create an AOD handler
480 AliAODHandler *aodH = dynamic_cast<AliAODHandler*>(AliAnalysisManager::GetAnalysisManager()->GetOutputEventHandler());
484 Printf("%s:%d no output aodHandler found Jet",(char*)__FILE__,__LINE__);
488 AliMCEvent* mcEvent =MCEvent();
490 Printf("%s:%d no mcEvent",(char*)__FILE__,__LINE__);
494 if (fDebug > 10)Printf("%s:%d",(char*)__FILE__,__LINE__);
497 AliAODVertex * pvtx = dynamic_cast<AliAODVertex*>(fAOD->GetPrimaryVertex());
500 AliAODJet genJetsPythia[kMaxJets];
501 Int_t nPythiaGenJets = 0;
503 AliAODJet genJets[kMaxJets];
506 AliAODJet recJets[kMaxJets];
509 //array of reconstructed jets from the AOD input
510 TClonesArray *aodRecJets = dynamic_cast<TClonesArray*>(fAOD->FindListObject(fBranchRec.Data()));
512 Printf("%s:%d no reconstructed Jet array with name %s in AOD",(char*)__FILE__,__LINE__,fBranchRec.Data());
516 // reconstructed jets
517 nRecJets = aodRecJets->GetEntries();
518 nRecJets = TMath::Min(nRecJets, kMaxJets);
520 for(int ir = 0;ir < nRecJets;++ir)
522 AliAODJet *tmp = dynamic_cast<AliAODJet*>(aodRecJets->At(ir));
527 // If we set a second branch for the input jets fetch this
528 TClonesArray * aodGenJets = dynamic_cast<TClonesArray*>(fAOD->FindListObject(fBranchGen.Data()));
532 printf("NO MC jets Found\n");
537 nGenJets = aodGenJets->GetEntries();
538 nGenJets = TMath::Min(nGenJets, kMaxJets);
540 for(Int_t ig =0 ; ig < nGenJets; ++ig)
542 AliAODJet * tmp = dynamic_cast<AliAODJet*>(aodGenJets->At(ig));
547 AliGenPythiaEventHeader* pythiaGenHeader = AliAnalysisHelperJetTasks::GetPythiaEventHeader(mcEvent);
548 if(!pythiaGenHeader){
549 Printf("!!!NO GEN HEADER AVALABLE!!!");
553 // Int_t ProcessType = pythiaGenHeader->ProcessType();
554 // if(ProcessType != 28) return;
555 fhXSec->Fill(pythiaGenHeader->GetPtHard(), fXsection);
556 nPythiaGenJets = pythiaGenHeader->NTriggerJets();
557 nPythiaGenJets = TMath::Min(nPythiaGenJets, kMaxJets);
559 Double_t eRec[kMaxJets];
560 Double_t eGen[kMaxJets];
562 Double_t eJetRec[kMaxJets];
563 // Double_t EJetGen[kMaxJets];
565 AliAODJet jetRec[kMaxJets];
566 AliAODJet jetGen[kMaxJets];
568 Int_t idxRec[kMaxJets];
569 Int_t idxGen[kMaxJets];
571 Double_t xRec[kMaxJets];
572 Double_t xGen[kMaxJets];
574 Double_t eSumRec = 0;
575 Double_t eSumGen = 0;
577 TLorentzVector vRec[kMaxJets];
578 TLorentzVector vRestRec[kMaxJets];
580 TLorentzVector vGen[kMaxJets];
581 TLorentzVector vRestGen[kMaxJets];
583 TLorentzVector vsumRec;
584 TLorentzVector vsumGen;
586 TVector3 pRec[kMaxJets];
587 TVector3 pGen[kMaxJets];
589 TVector3 pTrack[kTracks];
591 TVector3 pRestRec[kMaxJets];
592 TVector3 pRestGen[kMaxJets];
594 Double_t psumRestRec = 0;
595 // Double_t psumRestGen = 0;
596 //Pythia_________________________________________________________________________________________________________________
598 for(int ip = 0;ip < nPythiaGenJets;++ip)
600 if(ip>=kMaxJets)continue;
602 pythiaGenHeader->TriggerJet(ip,p);
603 genJetsPythia[ip].SetPxPyPzE(p[0],p[1],p[2],p[3]);
606 //_________________________________________________________________________________________________________________________
609 //________histos for MC___________________________________________________________________________________________________________
615 AliAODJet selJets[kMaxJets];
617 for(Int_t i = 0; i < nGenJets; i++)
621 selJets[nGenSel] = genJets[i];
628 for(Int_t j = 0; j < nGenJets; j++)
632 Double_t dRij = genJets[i].DeltaR(&genJets[j]);
634 if(dRij > 2*fR) tag++;
641 selJets[nGenSel] = genJets[i];
648 if(nGenSel == 0) return;
650 for (Int_t gj = 0; gj < nGenSel; gj++)
652 eGen[gj] = selJets[gj].E();
655 TMath::Sort(nGenSel, eGen, idxGen);
656 for (Int_t ig = 0; ig < nGenSel; ig++)
658 jetGen[ig] = selJets[idxGen[ig]];
660 AliStack * stack = mcEvent->Stack();
661 Int_t nMCtracks = stack->GetNprimary();
662 Double_t * eTracksMC = new Double_t[kTracks];
663 Double_t pTracksMC[kTracks];
664 Int_t * idxTracksMC = new Int_t[kTracks];
665 TLorentzVector jetTracksMC[kTracks];
666 TLorentzVector jetTracksSortMC[kTracks];
667 TVector3 pTrackMC[kTracks];
668 TLorentzVector vTrackMCAll[kTracks];
669 Double_t pTrackMCAll[kTracks];
670 TLorentzVector vTrackMC[kTracks];
671 TVector3 pTrackMCBoost[kTracks];
672 Double_t eventShapes[4];
675 Int_t nInJet[kMaxJets];
676 TLorentzVector inJetPartV[kMaxJets][kTracks];
677 Int_t nAllTracksMC = 0;
679 for(Int_t iTrack = 0; iTrack < nMCtracks; iTrack++)
681 TParticle * part = (TParticle*)stack->Particle(iTrack);
683 Double_t fEta = part->Eta();
684 if(TMath::Abs(fEta) > .9) continue;
685 if(!IsPrimChar(part, nMCtracks, 0)) continue;
686 vTrackMCAll[nAllTracksMC].SetPxPyPzE(part->Px(), part->Py(), part->Pz(), part->Energy());
687 pTrackMCAll[nAllTracksMC] = part->Pt();
690 if(nAllTracksMC == 0) return;
691 for(Int_t iJet = 0; iJet < nGenSel; iJet++)
693 Int_t nJetTracks = 0;
694 for(Int_t i = 0; i < nAllTracksMC; i++)
696 Double_t dPhi = (jetGen[iJet].Phi()-vTrackMCAll[i].Phi());
697 if(dPhi > TMath::Pi()) dPhi = dPhi - 2.*TMath::Pi();
698 if(dPhi < (-1.*TMath::Pi())) dPhi = dPhi + 2.*TMath::Pi();
699 Double_t dEta = (jetGen[iJet].Eta()-vTrackMCAll[i].Eta());
700 Double_t deltaR = TMath::Sqrt(dPhi*dPhi+dEta*dEta);
701 if(deltaR < fR && vTrackMCAll[i].Pt() > 1.5)
703 jetTracksMC[nAccTr] = vTrackMCAll[i];
704 eTracksMC[nAccTr] = vTrackMCAll[i].E();
705 pTracksMC[nAccTr] = vTrackMCAll[i].Pt();
706 inJetPartV[iJet][nJetTracks].SetPxPyPzE(vTrackMCAll[i].Px(), vTrackMCAll[i].Py(), vTrackMCAll[i].Pz(),vTrackMCAll[i].E());
711 nInJet[iJet] = nJetTracks;
714 if(nAccTr == 0) return;
715 Printf("*********** Number of Jets : %d ***************\n", nGenSel);
716 Double_t pTav[kMaxJets];
717 for(Int_t i = 0; i < nGenSel; i++)
720 Printf("*********** Number of particles in Jet %d = %d *******************\n", i+3, nInJet[i]);
721 for(Int_t iT = 0; iT < nInJet[i]; iT++)
723 Double_t pt = inJetPartV[i][iT].Pt();
726 pTav[i] = pTsum/nInJet[i];
729 TMath::Sort(nAccTr, pTracksMC, idxTracksMC);
730 for(Int_t i = 0; i < nAccTr; i++)
732 jetTracksSortMC[i] = jetTracksMC[idxTracksMC[i]];
733 pTrackMC[i].SetXYZ(jetTracksSortMC[i].Px(), jetTracksSortMC[i].Py(), jetTracksSortMC[i].Pz());
734 vTrackMC[i].SetPxPyPzE(jetTracksSortMC[i].Px(), jetTracksSortMC[i].Py(), jetTracksSortMC[i].Pz(), jetTracksSortMC[i].E());
737 TVector3 n01MC = pTrackMC[0].Unit();
738 //Thrust calculation, iterative method
743 AliAnalysisHelperJetTasks::GetEventShapes(n01MC, pTrackMC, nAccTr, eventShapes);
746 Double_t s = eventShapes[1];
747 Double_t a = eventShapes[2];
748 Double_t c = eventShapes[3];
767 Double_t thrust01MC = eventShapes[0];
772 fhThrustGen2->Fill(thrust01MC, fXsection);
775 fhThrustGen3->Fill(thrust01MC, fXsection);
782 for (Int_t i = 0; i < nGenSel; ++i)
784 vGen[i].SetPxPyPzE(jetGen[i].Px(), jetGen[i].Py(), jetGen[i].Pz(), jetGen[i].E());
785 pGen[i].SetXYZ(vGen[i].Px(), vGen[i].Py(), vGen[i].Pz());
788 if(eventShapes[0] >0.8 )
790 for(Int_t i = 0; i < nGenSel; i++)
791 fhdPhiThrustGen->Fill(n01MC.DeltaPhi(pGen[i]), jetGen[i].E());
794 if(eventShapes[0] <= 0.8)
796 for(Int_t i = 0; i < nGenSel; i++)
797 fhdPhiThrustGenALL->Fill(n01MC.DeltaPhi(pGen[i]), jetGen[i].E());
800 Double_t fPxGen = vsumGen.Px();
801 Double_t fPyGen = vsumGen.Py();
802 Double_t fPzGen = vsumGen.Pz();
803 Double_t fEGen = vsumGen.E();
805 Double_t eRestGen[kMaxJets];
806 for (Int_t j = 0; j < nGenSel; j++)
808 vGen[j].Boost(-fPxGen/fEGen, -fPyGen/fEGen, -fPzGen/fEGen);
809 eRestGen[j] = vGen[j].E();
812 for (Int_t j = 0; j < nAccTr; j++)
814 vTrackMC[j].Boost(-fPxGen/fEGen, -fPyGen/fEGen, -fPzGen/fEGen);
815 pTrackMCBoost[j].SetXYZ(vTrackMC[j].Px(),vTrackMC[j].Py(),vTrackMC[j].Pz());
818 Int_t idxRestGen[kMaxJets];
819 TMath::Sort(nGenSel, eRestGen, idxRestGen);
820 for(Int_t j = 0; j < nGenSel; j++)
822 vRestGen[j] = vGen[idxRestGen[j]];
823 eSumGen += vRestGen[j].E();
828 // if(nInJet[0] < 3 || nInJet[1] < 3 || nInJet[2] < 3) return;
829 // if(pRestGen[1].DeltaPhi(pRestGen[2]) > 0.95 && pRestGen[1].DeltaPhi(pRestGen[2]) < 1.15)
832 for(Int_t i = 0; i < nGenSel; i++)
834 xGen[i] = 2*vRestGen[i].E()/eSumGen;
837 Printf("***************** Values of Dalitz variables are : %f, %f, %f ****************\n", xGen[0], xGen[1], xGen[2]);
839 Printf("***************** fXSection = %f ******************\n", fXsection);
841 fhX3X4Gen60->Fill(xGen[0], xGen[1], fXsection);
843 if(eSumGen > 60 && eSumGen <= 100)
844 fhX3X4Gen60100->Fill(xGen[0], xGen[1], fXsection);
847 fhX3X4Gen100->Fill(xGen[0], xGen[1], fXsection);
849 FillTopology(fhX3X4Gen, fhMu34Gen, fhMu45Gen, fhMu35Gen, xGen, pRestGen, fXsection);
854 //_______________________________________________histos for MC_____________________________________________________
857 //_______________________________________________histos AOD________________________________________________________
859 // Printf("Event Number : %d, Number of gen jets : %d ", fEntry, nGenJets);
865 AliAODJet recSelJets[kMaxJets];
867 for(Int_t i = 0; i < nRecJets; i++)
871 recSelJets[nRecSel] = recJets[i];
878 for(Int_t j = 0; j < nRecJets; j++)
882 Double_t dRij = recJets[i].DeltaR(&recJets[j]);
884 if(dRij > 2*fR) tag1++;
889 if(tag1/counter1 == 1)
891 recSelJets[nRecSel] = recJets[i];
898 if(nRecSel == 0) return;
900 //sort rec/gen jets by energy in C.M.S
901 for (Int_t rj = 0; rj < nRecSel; rj++)
903 eRec[rj] = recSelJets[rj].E();
906 // Int_t nAODtracks = fAOD->GetNumberOfTracks();
907 Int_t nTracks = 0; //tracks accepted in the whole event
908 // Int_t nTracksALL = 0;
909 TLorentzVector jetTracks[kTracks];
910 TLorentzVector jetTracksSort[kTracks];
911 Double_t * eTracks = new Double_t[kTracks];
912 Double_t pTracks[kTracks];
913 Int_t * idxTracks = new Int_t[kTracks];
914 Double_t eventShapesRec[4];
915 Int_t jetMult[kMaxJets];
916 // TLorentzVector vTracksAll[kTracks];
917 // Double_t pTracksAll[kTracks];
919 AliAODJet jetRecAcc[kMaxJets];
920 Int_t nJetTracks = 0;
922 AliAODTrack jetTrack[kTracks];
923 Double_t * cv = new Double_t[21];
924 TMath::Sort(nRecSel, eRec, idxRec);
925 for (Int_t rj = 0; rj < nRecSel; rj++)
928 eJetRec[rj] = eRec[idxRec[rj]];
929 jetRec[rj] = recSelJets[idxRec[rj]];
930 TRefArray * jetTracksAOD = dynamic_cast<TRefArray*>(jetRec[rj].GetRefTracks());
931 if(!jetTracksAOD) continue;
932 if(jetTracksAOD->GetEntries() < 3) continue;
933 for(Int_t i = 0; i < jetTracksAOD->GetEntries(); i++)
935 AliAODTrack * track = (AliAODTrack*)jetTracksAOD->At(i);
936 track->GetCovarianceXYZPxPyPz(cv);
937 if(cv[14] > 1000.) continue;
938 jetTrack[nTracks] = *track;
939 jetTracks[nTracks].SetPxPyPzE(jetTrack[nTracks].Px(), jetTrack[nTracks].Py(), jetTrack[nTracks].Pz(), jetTrack[nTracks].E());
940 eTracks[nTracks] = jetTracks[nTracks].E();
941 pTracks[nTracks] = jetTracks[nTracks].Pt();
945 if(nJetTracks < 3) continue;
946 jetRecAcc[nAccJets] = jetRec[rj];
947 jetMult[nAccJets] = jetTracksAOD->GetEntries();
951 if (nAccJets == 0) return;
953 TLorentzVector vTrack[kTracks];
954 TMath::Sort(nTracks, pTracks, idxTracks);
955 for(Int_t i = 0; i < nTracks; i++)
957 jetTracksSort[i] = jetTracks[idxTracks[i]];
958 pTrack[i].SetXYZ(jetTracksSort[i].Px(), jetTracksSort[i].Py(), jetTracksSort[i].Pz());
959 vTrack[i].SetPxPyPzE(jetTracksSort[i].Px(), jetTracksSort[i].Py(), jetTracksSort[i].Pz(), jetTracksSort[i].E());
962 for (Int_t i = 0; i < nAccJets; ++i)
964 vRec[i].SetPxPyPzE(jetRecAcc[i].Px(), jetRecAcc[i].Py(), jetRecAcc[i].Pz(), jetRecAcc[i].E());
965 pRec[i].SetXYZ(vRec[i].Px(), vRec[i].Py(), vRec[i].Pz());
969 //Thrust, iterative method, AODs
970 TVector3 n01 = pTrack[0].Unit();
975 AliAnalysisHelperJetTasks::GetEventShapes(n01, pTrack, nTracks, eventShapesRec);
978 // Double_t Max3 = TMath::Max(eventShapesRec0[0],eventShapesRec1[0]);
979 // Double_t Max4 = TMath::Max(eventShapesRec3[0],eventShapesRec2[0]);
981 Double_t thrust = eventShapesRec[0];
983 if(eventShapesRec[0] > 0.8)
985 for(Int_t i = 0; i < nAccJets; i++)
986 fhdPhiThrustRec->Fill(n01.DeltaPhi(pRec[i]), jetRecAcc[i].E());
990 if(eventShapesRec[0] <= 0.8)
992 for(Int_t i = 0; i < nAccJets; i++)
993 fhdPhiThrustRecALL->Fill(n01.DeltaPhi(pRec[i]), jetRecAcc[i].E());
999 fhThrustRec2->Fill(thrust, fXsection);
1002 fhThrustRec3->Fill(thrust, fXsection);
1010 fhARec2->Fill(eventShapesRec[2], fXsection);
1011 fhSRec2->Fill(eventShapesRec[1], fXsection);
1012 fhCRec2->Fill(eventShapesRec[3], fXsection);
1017 fhARec3->Fill(eventShapesRec[2], fXsection);
1018 fhSRec3->Fill(eventShapesRec[1], fXsection);
1019 fhCRec3->Fill(eventShapesRec[3], fXsection);
1026 //rest frame for reconstructed jets
1027 Double_t fPx = vsumRec.Px();
1028 Double_t fPy = vsumRec.Py();
1029 Double_t fPz = vsumRec.Pz();
1030 Double_t fE = vsumRec.E();
1032 TVector3 pTrackRest[kTracks];
1033 for(Int_t j = 0; j < nTracks; j++)
1035 vTrack[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1036 pTrackRest[j].SetXYZ(vTrack[j].Px(), vTrack[j].Py(),vTrack[j].Pz());
1039 Double_t eRestRec[kMaxJets];
1040 Int_t idxRestRec[kMaxJets];
1041 for (Int_t j = 0; j < nAccJets; j++)
1043 vRec[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1044 eRestRec[j] = vRec[j].E();
1045 eSumRec += vRec[j].E();
1048 TMath::Sort(nAccJets, eRestRec, idxRestRec);
1049 for (Int_t i = 0; i < nAccJets; i++)
1051 vRestRec[i] = vRec[idxRestRec[i]];
1052 pRestRec[i].SetXYZ(vRestRec[i].Px(), vRestRec[i].Py(), vRestRec[i].Pz());
1053 psumRestRec += pRestRec[i].Perp();
1058 // if(pRest[1].DeltaPhi(pRest[2]) > 0.95 && pRest[1].DeltaPhi(pRest[2]) < 1.15)
1060 fhInOut->Fill(nGenSel);
1061 // for(Int_t j = 0; j < nTracksALL; j++)
1063 // vTracksAll[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1064 // pTracksAll[j].SetXYZ(vTracksAll[j].Px(), vTracksAll[j].Py(),vTracksAll[j].Pz());
1065 // fhdPhiRec->Fill(pRest[0].DeltaPhi(pTracksAll[j]), pTracksAll[j].Perp(), fXsection);
1067 //and the Dalitz variables and Energy distributions in the rest frame
1068 for (Int_t i = 0; i < nAccJets; i++)
1069 xRec[i] = 2*vRestRec[i].E()/eSumRec;
1072 fhX3X4Rec60->Fill(xRec[0], xRec[1], fXsection);
1074 if(eSumRec > 60 && eSumRec <= 100)
1075 fhX3X4Rec60100->Fill(xRec[0], xRec[1], fXsection);
1078 fhX3X4Rec100->Fill(xRec[0], xRec[1], fXsection);
1080 if(nAccJets == 3 && nAccJets == nGenJets)
1082 fhX3->Fill(xGen[0], TMath::Abs(xGen[0]-xRec[0])/xGen[0], fXsection);
1083 fhX4->Fill(xGen[1], TMath::Abs(xGen[1]-xRec[1])/xGen[1], fXsection);
1084 fhX5->Fill(xGen[2], TMath::Abs(xGen[2]-xRec[2])/xGen[2], fXsection);
1087 FillTopology(fhX3X4Rec, fhMu34Rec, fhMu45Rec, fhMu35Rec, xRec, pRestRec, fXsection);
1089 Printf("%s:%d",(char*)__FILE__,__LINE__);
1093 Printf("%s:%d Data Posted",(char*)__FILE__,__LINE__);
1097 //__________________________________________________________________________________________________________________________________________________
1098 void AliAnalysisTaskThreeJets::Terminate(Option_t *)
1100 printf("AnalysisJetCorrelation::Terminate()");
1104 //_______________________________________User defined functions_____________________________________________________________________________________
1105 void AliAnalysisTaskThreeJets::FillTopology(TH2F * Dalitz, TH1F * fhMu34, TH1F * fhMu45, TH1F * fhMu35, Double_t * x, TVector3 * pRest, Double_t xsection)
1108 // fill the topology histos
1110 Dalitz->Fill(x[0], x[1], xsection);
1111 fhMu35->Fill(TMath::Sqrt(x[0]*x[2]*(1-(pRest[0].Unit()).Dot(pRest[2].Unit()))/2), xsection);
1112 fhMu34->Fill(TMath::Sqrt(x[0]*x[1]*(1-(pRest[0].Unit()).Dot(pRest[1].Unit()))/2), xsection);
1113 fhMu45->Fill(TMath::Sqrt(x[1]*x[2]*(1-(pRest[1].Unit()).Dot(pRest[2].Unit()))/2), xsection);
1116 //_____________________________________________________________________________________________________________________________
1118 Bool_t AliAnalysisTaskThreeJets::IsPrimChar(TParticle* aParticle, Int_t aTotalPrimaries, Bool_t adebug)
1121 // this function checks if a particle from the event generator (i.e. among the nPrim particles in the stack)
1122 // shall be counted as a primary particle
1124 // This function or a equivalent should be available in some common place of AliRoot
1126 // WARNING: Call this function only for particles that are among the particles from the event generator!
1127 // --> stack->Particle(id) with id < stack->GetNprimary()
1129 // if the particle has a daughter primary, we do not want to count it
1130 if (aParticle->GetFirstDaughter() != -1 && aParticle->GetFirstDaughter() < aTotalPrimaries)
1133 printf("Dropping particle because it has a daughter among the primaries.\n");
1137 Int_t pdgCode = TMath::Abs(aParticle->GetPdgCode());
1140 // skip quarks and gluon
1141 if (pdgCode <= 10 || pdgCode == 21)
1144 printf("Dropping particle because it is a quark or gluon.\n");
1148 Int_t status = aParticle->GetStatusCode();
1149 // skip non final state particles..
1152 printf("Dropping particle because it is not a final state particle.\n");
1156 if (strcmp(aParticle->GetName(),"XXX") == 0)
1158 Printf("WARNING: There is a particle named XXX (pdg code %d).", pdgCode);
1162 TParticlePDG* pdgPart = aParticle->GetPDG();
1164 if (strcmp(pdgPart->ParticleClass(),"Unknown") == 0)
1166 Printf("WARNING: There is a particle with an unknown particle class (pdg code %d).", pdgCode);
1170 if (pdgPart->Charge() == 0)
1173 printf("Dropping particle because it is not charged.\n");
1180 //______________________________________________________________________________________________________
1183 //__________________________________________________________________________________________________________________________
1185 Double_t AliAnalysisTaskThreeJets::Exponent(Double_t x,const Double_t * const par) const
1187 return par[0]*TMath::Power(1/TMath::E(), TMath::Power(par[1]/x, par[2])+0.5*TMath::Power((x-par[3])/par[0], 2))+par[4]*x;
1190 Double_t AliAnalysisTaskThreeJets::Exponent2(Double_t x,const Double_t * const par) const
1192 return par[0]*TMath::Power(1/TMath::E(), TMath::Power(par[1]/x, par[2]))+par[3]*x;
1195 Double_t AliAnalysisTaskThreeJets::Gauss(Double_t x,const Double_t * const par) const
1197 return 1/(par[1])*TMath::Power(1/TMath::E(), 0.5*(x-par[0])*(x-par[0])/(par[1]*par[1]));
1200 Double_t AliAnalysisTaskThreeJets::Total(Double_t x,const Double_t * const par) const
1202 return Exponent(x, par)+Gauss(x, &par[4]);