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 **************************************************************************/
31 #include <TLorentzVector.h>
32 #include <TClonesArray.h>
33 #include <TRefArray.h>
36 #include <TMatrixDSym.h>
37 #include <TMatrixDSymEigen.h>
40 #include "AliAnalysisTaskThreeJets.h"
41 #include "AliAnalysisManager.h"
42 #include "AliAODEvent.h"
43 #include "AliAODVertex.h"
44 #include "AliAODHandler.h"
45 #include "AliAODTrack.h"
46 #include "AliAODJet.h"
47 #include "AliGenPythiaEventHeader.h"
48 #include "AliMCEvent.h"
52 #include "AliAnalysisHelperJetTasks.h"
55 ClassImp(AliAnalysisTaskThreeJets)
57 AliAnalysisTaskThreeJets::AliAnalysisTaskThreeJets() : AliAnalysisTaskSE(),
123 fhdPhiThrustGen(0x0),
124 fhdPhiThrustGenALL(0x0),
126 fhdPhiThrustRec(0x0),
127 fhdPhiThrustRecALL(0x0)
133 AliAnalysisTaskThreeJets::AliAnalysisTaskThreeJets(const char * name):
134 AliAnalysisTaskSE(name),
141 fUseAODInput(kFALSE),
200 fhdPhiThrustGen(0x0),
201 fhdPhiThrustGenALL(0x0),
203 fhdPhiThrustRec(0x0),
204 fhdPhiThrustRecALL(0x0)
206 DefineOutput(1, TList::Class());
211 Bool_t AliAnalysisTaskThreeJets::Notify()
214 // Implemented Notify() to read the cross sections
215 // and number of trials from pyxsec.root
217 TTree *tree = AliAnalysisManager::GetAnalysisManager()->GetTree();
220 TFile *curfile = tree->GetCurrentFile();
222 Error("Notify","No current file");
226 TString fileName(curfile->GetName());
227 if(fileName.Contains("AliESDs.root")){
228 fileName.ReplaceAll("AliESDs.root", "pyxsec.root");
230 else if(fileName.Contains("AliAOD.root")){
231 fileName.ReplaceAll("AliAOD.root", "pyxsec.root");
233 else if(fileName.Contains("galice.root")){
234 // for running with galice and kinematics alone...
235 fileName.ReplaceAll("galice.root", "pyxsec.root");
237 TFile *fxsec = TFile::Open(fileName.Data());
239 Printf("%s:%d %s not found in the Input",(char*)__FILE__,__LINE__,fileName.Data());
240 // no a severe condition
243 TTree *xtree = (TTree*)fxsec->Get("Xsection");
245 Printf("%s:%d tree not found in the pyxsec.root",(char*)__FILE__,__LINE__);
247 xtree->SetBranchAddress("xsection",&fXsection);
248 xtree->SetBranchAddress("ntrials",&ntrials);
256 //___________________________________________________________________________________________________________________________________
257 void AliAnalysisTaskThreeJets::UserCreateOutputObjects()
260 // Create the output container
262 // Printf("Analysing event %s :: # %5d\n", gSystem->pwd(), (Int_t) fEntry);
265 fAOD = dynamic_cast<AliAODEvent*>(InputEvent());
267 Printf("%s:%d AODEvent not found in Input Manager %d",(char*)__FILE__,__LINE__,fUseAODInput);
272 // assume that the AOD is in the general output...
275 Printf("%s:%d AODEvent not found in the Output",(char*)__FILE__,__LINE__);
280 printf("AnalysisTaskJetSpectrum::UserCreateOutputObjects() \n");
284 fhX3X4Gen = new TH2F("X3vsX4Gen", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
285 fhX3X4Gen->SetXTitle("X_{3}");
286 fhX3X4Gen->SetYTitle("X_{4}");
288 fList->Add(fhX3X4Gen);
290 fhX3X4Rec = new TH2F("X3vsX4Rec", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
291 fhX3X4Rec->SetXTitle("X_{3}");
292 fhX3X4Rec->SetYTitle("X_{4}");
294 fList->Add(fhX3X4Rec);
296 fhMu35Rec = new TH1F("Mu35Rec", "", 20,0.1,0.8);
298 fhMu35Rec->SetXTitle("#mu_{35}");
299 fhMu35Rec->SetYTitle("#frac{dN}{d#mu_{35Rec}}");
300 fList->Add(fhMu35Rec);
302 fhMu34Rec = new TH1F("Mu34Rec", "", 20,0.5,1);
304 fhMu34Rec->SetXTitle("#mu_{34}");
305 fhMu34Rec->SetYTitle("#frac{dN}{d#mu_{34}}");
306 fList->Add(fhMu34Rec);
308 fhMu45Rec = new TH1F("Mu45Rec", "", 20,0,0.65);
310 fhMu45Rec->SetXTitle("#mu_{45}");
311 fhMu45Rec->SetYTitle("#frac{dN}{d#mu_{45}}");
312 fList->Add(fhMu45Rec);
314 fhMu35Gen = new TH1F("Mu35Gen", "", 20,0.1,0.8);
316 fhMu35Gen->SetXTitle("#mu_{35Gen}");
317 fhMu35Gen->SetYTitle("#frac{dN}{d#mu_{35Gen}}");
318 fList->Add(fhMu35Gen);
320 fhMu34Gen = new TH1F("Mu34Gen", "", 20,0.5,1);
322 fhMu34Gen->SetXTitle("#mu_{34Gen}");
323 fhMu34Gen->SetYTitle("#frac{dN}{d#mu_{34Gen}}");
324 fList->Add(fhMu34Gen);
326 fhMu45Gen = new TH1F("Mu45Gen", "", 20,0,0.65);
328 fhMu45Gen->SetXTitle("#mu_{45Gen}");
329 fhMu45Gen->SetYTitle("#frac{dN}{d#mu_{45}}");
330 fList->Add(fhMu45Gen);
332 fhInOut = new TH1I("InOut", "", 6, 0, 6);
333 fhInOut->SetXTitle("#RecJets_{GenJets=3}");
334 fhInOut->SetYTitle("#Entries");
337 fhThrustGen2 = new TH1F("ThrustGen2", "", 50, 0.5, 1);
338 fhThrustGen2->Sumw2();
339 fList->Add(fhThrustGen2);
341 fhThrustGen3 = new TH1F("ThrustGen3", "", 50, 0.5, 1);
342 fhThrustGen3->Sumw2();
343 fList->Add(fhThrustGen3);
345 fhThrustRec2 = new TH1F("ThrustRec2", "", 50, 0.5, 1);
346 fhThrustRec2->Sumw2();
347 fList->Add(fhThrustRec2);
349 fhThrustRec3 = new TH1F("ThrustRec3", "", 50, 0.5, 1);
350 fhThrustRec3->Sumw2();
351 fList->Add(fhThrustRec3);
353 fhCGen2 = new TH1F("CGen2", "", 100, 0, 1);
357 fhCGen3 = new TH1F("CGen3", "", 100, 0, 1);
361 fhCRec2 = new TH1F("CRec2", "", 100, 0, 1);
365 fhCRec3 = new TH1F("CRec3", "", 100, 0, 1);
369 fhSGen2 = new TH1F("SGen2", "", 100, 0, 1);
372 fhSGen3 = new TH1F("SGen3", "", 100, 0, 1);
375 fhSRec2 = new TH1F("SRec2", "", 100, 0, 1);
378 fhSRec3 = new TH1F("SRec3", "", 100, 0, 1);
381 fhAGen2 = new TH1F("AGen2", "", 50, 0, 0.5);
384 fhAGen3 = new TH1F("AGen3", "", 50, 0, 0.5);
387 fhARec2 = new TH1F("ARec2", "", 50, 0, 0.5);
390 fhARec3 = new TH1F("ARec3", "", 50, 0, 0.5);
393 fhX3 = new TH2F("X3", "", 22, 0.6, 1.02, 100, 0, 1);
394 fhX3->SetYTitle("|X_{3}^{MC} - X_{3}^{AOD}|/X_{3}^{MC}");
395 fhX3->SetXTitle("X_{3}");
399 fhX4 = new TH2F("X4", "",33, 0.4, 1.02, 100, 0, 1);
400 fhX4->SetYTitle("|X_{4}^{MC} - X_{4}^{AOD}|/X_{4}^{MC}");
401 fhX4->SetXTitle("X_{4}");
405 fhX5 = new TH2F("X5", "",100, 0., 1., 100, 0, 1);
406 fhX5->SetYTitle("|X_{5}^{MC} - X_{5}^{AOD}|/X_{5}^{MC}");
407 fhX5->SetXTitle("X_{5}");
411 fhXSec = new TProfile("XSec", "", 200, 0, 200, 0, 1);
414 fhX3X4Rec60 = new TH2F("X3vsX4Rec60", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
415 fhX3X4Rec60->SetXTitle("X_{3}");
416 fhX3X4Rec60->SetYTitle("X_{4}");
417 fhX3X4Rec60->Sumw2();
418 fList->Add(fhX3X4Rec60);
420 fhX3X4Rec60100 = new TH2F("X3vsX4Rec60100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
421 fhX3X4Rec60100->SetXTitle("X_{3}");
422 fhX3X4Rec60100->SetYTitle("X_{4}");
423 fhX3X4Rec60100->Sumw2();
424 fList->Add(fhX3X4Rec60100);
426 fhX3X4Rec100 = new TH2F("X3vsX4Rec100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
427 fhX3X4Rec100->SetXTitle("X_{3}");
428 fhX3X4Rec100->SetYTitle("X_{4}");
429 fhX3X4Rec100->Sumw2();
430 fList->Add(fhX3X4Rec100);
432 fhX3X4Gen60 = new TH2F("X3vsX4Gen60", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
433 fhX3X4Gen60->SetXTitle("X_{3}");
434 fhX3X4Gen60->SetYTitle("X_{4}");
435 fhX3X4Gen60->Sumw2();
436 fList->Add(fhX3X4Gen60);
438 fhX3X4Gen60100 = new TH2F("X3vsX4Gen60100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
439 fhX3X4Gen60100->SetXTitle("X_{3}");
440 fhX3X4Gen60100->SetYTitle("X_{4}");
441 fhX3X4Gen60100->Sumw2();
442 fList->Add(fhX3X4Gen60100);
444 fhX3X4Gen100 = new TH2F("X3vsX4Gen100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
445 fhX3X4Gen100->SetXTitle("X_{3}");
446 fhX3X4Gen100->SetYTitle("X_{4}");
447 fhX3X4Gen100->Sumw2();
448 fList->Add(fhX3X4Gen100);
450 fhdPhiThrustGen = new TH2F("dPhiThrustGen", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
451 fhdPhiThrustGen->Sumw2();
452 fList->Add(fhdPhiThrustGen);
454 fhdPhiThrustGenALL = new TH2F("dPhiThrustGenALL", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
455 fhdPhiThrustGenALL->Sumw2();
456 fList->Add(fhdPhiThrustGenALL);
458 fhdPhiThrustRec = new TH2F("dPhiThrustRec", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
459 fhdPhiThrustRec->Sumw2();
460 fList->Add(fhdPhiThrustRec);
462 fhdPhiThrustRecALL = new TH2F("dPhiThrustRecALL", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
463 fhdPhiThrustRecALL->Sumw2();
464 fList->Add(fhdPhiThrustRecALL);
466 Printf("UserCreateOutputObjects finished\n");
469 //__________________________________________________________________________________________________________________________________________
470 void AliAnalysisTaskThreeJets::Init()
472 printf("AliAnalysisJetCut::Init() \n");
475 //____________________________________________________________________________________________________________________________________________
476 void AliAnalysisTaskThreeJets::UserExec(Option_t * )
478 // if (fDebug > 1) printf("Analysing event # %5d\n", (Int_t) fEntry);
481 //create an AOD handler
482 AliAODHandler *aodH = dynamic_cast<AliAODHandler*>(AliAnalysisManager::GetAnalysisManager()->GetOutputEventHandler());
486 Printf("%s:%d no output aodHandler found Jet",(char*)__FILE__,__LINE__);
490 AliMCEvent* mcEvent =MCEvent();
492 Printf("%s:%d no mcEvent",(char*)__FILE__,__LINE__);
496 if (fDebug > 10)Printf("%s:%d",(char*)__FILE__,__LINE__);
499 AliAODVertex * pvtx = dynamic_cast<AliAODVertex*>(fAOD->GetPrimaryVertex());
502 AliAODJet genJetsPythia[kMaxJets];
503 Int_t nPythiaGenJets = 0;
505 AliAODJet genJets[kMaxJets];
508 AliAODJet recJets[kMaxJets];
511 //array of reconstructed jets from the AOD input
512 TClonesArray *aodRecJets = dynamic_cast<TClonesArray*>(fAOD->FindListObject(fBranchRec.Data()));
514 Printf("%s:%d no reconstructed Jet array with name %s in AOD",(char*)__FILE__,__LINE__,fBranchRec.Data());
518 // reconstructed jets
519 nRecJets = aodRecJets->GetEntries();
520 nRecJets = TMath::Min(nRecJets, kMaxJets);
522 for(int ir = 0;ir < nRecJets;++ir)
524 AliAODJet *tmp = dynamic_cast<AliAODJet*>(aodRecJets->At(ir));
529 // If we set a second branch for the input jets fetch this
530 TClonesArray * aodGenJets = dynamic_cast<TClonesArray*>(fAOD->FindListObject(fBranchGen.Data()));
534 printf("NO MC jets Found\n");
539 nGenJets = aodGenJets->GetEntries();
540 nGenJets = TMath::Min(nGenJets, kMaxJets);
542 for(Int_t ig =0 ; ig < nGenJets; ++ig)
544 AliAODJet * tmp = dynamic_cast<AliAODJet*>(aodGenJets->At(ig));
549 AliGenPythiaEventHeader* pythiaGenHeader = AliAnalysisHelperJetTasks::GetPythiaEventHeader(mcEvent);
550 if(!pythiaGenHeader){
551 Printf("!!!NO GEN HEADER AVALABLE!!!");
555 // Int_t ProcessType = pythiaGenHeader->ProcessType();
556 // if(ProcessType != 28) return;
557 fhXSec->Fill(pythiaGenHeader->GetPtHard(), fXsection);
558 nPythiaGenJets = pythiaGenHeader->NTriggerJets();
559 nPythiaGenJets = TMath::Min(nPythiaGenJets, kMaxJets);
561 Double_t eRec[kMaxJets];
562 Double_t eGen[kMaxJets];
564 Double_t eJetRec[kMaxJets];
565 // Double_t EJetGen[kMaxJets];
567 AliAODJet jetRec[kMaxJets];
568 AliAODJet jetGen[kMaxJets];
570 Int_t idxRec[kMaxJets];
571 Int_t idxGen[kMaxJets];
573 Double_t xRec[kMaxJets];
574 Double_t xGen[kMaxJets];
576 Double_t eSumRec = 0;
577 Double_t eSumGen = 0;
579 TLorentzVector vRec[kMaxJets];
580 TLorentzVector vRestRec[kMaxJets];
582 TLorentzVector vGen[kMaxJets];
583 TLorentzVector vRestGen[kMaxJets];
585 TLorentzVector vsumRec;
586 TLorentzVector vsumGen;
588 TVector3 pRec[kMaxJets];
589 TVector3 pGen[kMaxJets];
591 TVector3 pTrack[kTracks];
593 TVector3 pRestRec[kMaxJets];
594 TVector3 pRestGen[kMaxJets];
596 Double_t psumRestRec = 0;
597 // Double_t psumRestGen = 0;
598 //Pythia_________________________________________________________________________________________________________________
600 for(int ip = 0;ip < nPythiaGenJets;++ip)
602 if(ip>=kMaxJets)continue;
604 pythiaGenHeader->TriggerJet(ip,p);
605 genJetsPythia[ip].SetPxPyPzE(p[0],p[1],p[2],p[3]);
608 //_________________________________________________________________________________________________________________________
611 //________histos for MC___________________________________________________________________________________________________________
617 AliAODJet selJets[kMaxJets];
619 for(Int_t i = 0; i < nGenJets; i++)
623 selJets[nGenSel] = genJets[i];
630 for(Int_t j = 0; j < nGenJets; j++)
634 Double_t dRij = genJets[i].DeltaR(&genJets[j]);
636 if(dRij > 2*fR) tag++;
643 selJets[nGenSel] = genJets[i];
650 if(nGenSel == 0) return;
652 for (Int_t gj = 0; gj < nGenSel; gj++)
654 eGen[gj] = selJets[gj].E();
657 TMath::Sort(nGenSel, eGen, idxGen);
658 for (Int_t ig = 0; ig < nGenSel; ig++)
660 jetGen[ig] = selJets[idxGen[ig]];
662 AliStack * stack = mcEvent->Stack();
663 Int_t nMCtracks = stack->GetNprimary();
664 Double_t * eTracksMC = new Double_t[kTracks];
665 Double_t pTracksMC[kTracks];
666 Int_t * idxTracksMC = new Int_t[kTracks];
667 TLorentzVector jetTracksMC[kTracks];
668 TLorentzVector jetTracksSortMC[kTracks];
669 TVector3 pTrackMC[kTracks];
670 TLorentzVector vTrackMCAll[kTracks];
671 Double_t pTrackMCAll[kTracks];
672 TLorentzVector vTrackMC[kTracks];
673 TVector3 pTrackMCBoost[kTracks];
674 Double_t eventShapes[4];
677 Int_t nInJet[kMaxJets];
678 TLorentzVector inJetPartV[kMaxJets][kTracks];
679 Int_t nAllTracksMC = 0;
681 for(Int_t iTrack = 0; iTrack < nMCtracks; iTrack++)
683 TParticle * part = (TParticle*)stack->Particle(iTrack);
685 Double_t fEta = part->Eta();
686 if(TMath::Abs(fEta) > .9) continue;
687 if(!IsPrimChar(part, nMCtracks, 0)) continue;
688 vTrackMCAll[nAllTracksMC].SetPxPyPzE(part->Px(), part->Py(), part->Pz(), part->Energy());
689 pTrackMCAll[nAllTracksMC] = part->Pt();
692 if(nAllTracksMC == 0) return;
693 for(Int_t iJet = 0; iJet < nGenSel; iJet++)
695 Int_t nJetTracks = 0;
696 for(Int_t i = 0; i < nAllTracksMC; i++)
698 Double_t dPhi = (jetGen[iJet].Phi()-vTrackMCAll[i].Phi());
699 if(dPhi > TMath::Pi()) dPhi = dPhi - 2.*TMath::Pi();
700 if(dPhi < (-1.*TMath::Pi())) dPhi = dPhi + 2.*TMath::Pi();
701 Double_t dEta = (jetGen[iJet].Eta()-vTrackMCAll[i].Eta());
702 Double_t deltaR = TMath::Sqrt(dPhi*dPhi+dEta*dEta);
703 if(deltaR < fR && vTrackMCAll[i].Pt() > 1.5)
705 jetTracksMC[nAccTr] = vTrackMCAll[i];
706 eTracksMC[nAccTr] = vTrackMCAll[i].E();
707 pTracksMC[nAccTr] = vTrackMCAll[i].Pt();
708 inJetPartV[iJet][nJetTracks].SetPxPyPzE(vTrackMCAll[i].Px(), vTrackMCAll[i].Py(), vTrackMCAll[i].Pz(),vTrackMCAll[i].E());
713 nInJet[iJet] = nJetTracks;
716 if(nAccTr == 0) return;
717 Printf("*********** Number of Jets : %d ***************\n", nGenSel);
718 Double_t pTav[kMaxJets];
719 for(Int_t i = 0; i < nGenSel; i++)
722 Printf("*********** Number of particles in Jet %d = %d *******************\n", i+3, nInJet[i]);
723 for(Int_t iT = 0; iT < nInJet[i]; iT++)
725 Double_t pt = inJetPartV[i][iT].Pt();
728 pTav[i] = pTsum/nInJet[i];
731 TMath::Sort(nAllTracksMC, pTrackMCAll, idxTracksMC);
732 for(Int_t i = 0; i < nAllTracksMC; i++)
734 jetTracksSortMC[i] = vTrackMCAll[idxTracksMC[i]];
735 pTrackMC[i].SetXYZ(jetTracksSortMC[i].Px(), jetTracksSortMC[i].Py(), jetTracksSortMC[i].Pz());
736 vTrackMC[i].SetPxPyPzE(jetTracksSortMC[i].Px(), jetTracksSortMC[i].Py(), jetTracksSortMC[i].Pz(), jetTracksSortMC[i].E());
739 TVector3 n01MC = pTrackMC[0].Unit();
742 //Thrust calculation, iterative method
747 Printf("**************Shapes for MC*************");
748 AliAnalysisHelperJetTasks::GetEventShapes(n01MC, pTrackMC, nAllTracksMC, eventShapes);
750 if(eventShapes[0] < 2/TMath::Pi()){
751 Double_t eventShapesTest[4];
753 Int_t rnd_max = nAllTracksMC;
754 Int_t k = (rand()%rnd_max)+3;
755 while(TMath::Abs(pTrackMC[k].X()) < 10e-5 && TMath::Abs(pTrackMC[k].Y()) < 10e-5){
758 n01Test = pTrackMC[k].Unit();
760 AliAnalysisHelperJetTasks::GetEventShapes(n01Test, pTrackMC, nAllTracksMC, eventShapesTest);
761 eventShapes[0] = TMath::Max(eventShapes[0], eventShapesTest[0]);
762 if(TMath::Abs(eventShapes[0]-eventShapesTest[0]) < 10e-7) n01MC = n01Test;
765 Double_t s = eventShapes[1];
766 Double_t a = eventShapes[2];
767 Double_t c = eventShapes[3];
786 Double_t thrust01MC = eventShapes[0];
791 fhThrustGen2->Fill(thrust01MC, fXsection);
794 fhThrustGen3->Fill(thrust01MC, fXsection);
801 for (Int_t i = 0; i < nGenSel; ++i)
803 vGen[i].SetPxPyPzE(jetGen[i].Px(), jetGen[i].Py(), jetGen[i].Pz(), jetGen[i].E());
804 pGen[i].SetXYZ(vGen[i].Px(), vGen[i].Py(), vGen[i].Pz());
807 if(eventShapes[0] > 0.8 && nGenSel > 1)
809 for(Int_t i = 0; i < nGenSel; i++)
810 fhdPhiThrustGen->Fill(n01MC.DeltaPhi(pGen[i]), jetGen[i].E());
813 if(eventShapes[0] <= 0.8 && nGenSel > 1)
815 for(Int_t i = 0; i < nGenSel; i++)
816 fhdPhiThrustGenALL->Fill(n01MC.DeltaPhi(pGen[i]), jetGen[i].E());
819 Double_t fPxGen = vsumGen.Px();
820 Double_t fPyGen = vsumGen.Py();
821 Double_t fPzGen = vsumGen.Pz();
822 Double_t fEGen = vsumGen.E();
824 Double_t eRestGen[kMaxJets];
825 for (Int_t j = 0; j < nGenSel; j++)
827 vGen[j].Boost(-fPxGen/fEGen, -fPyGen/fEGen, -fPzGen/fEGen);
828 eRestGen[j] = vGen[j].E();
831 for (Int_t j = 0; j < nAccTr; j++)
833 vTrackMC[j].Boost(-fPxGen/fEGen, -fPyGen/fEGen, -fPzGen/fEGen);
834 pTrackMCBoost[j].SetXYZ(vTrackMC[j].Px(),vTrackMC[j].Py(),vTrackMC[j].Pz());
837 Int_t idxRestGen[kMaxJets];
838 TMath::Sort(nGenSel, eRestGen, idxRestGen);
839 for(Int_t j = 0; j < nGenSel; j++)
841 vRestGen[j] = vGen[idxRestGen[j]];
842 eSumGen += vRestGen[j].E();
847 // if(nInJet[0] < 3 || nInJet[1] < 3 || nInJet[2] < 3) return;
848 // if(pRestGen[1].DeltaPhi(pRestGen[2]) > 0.95 && pRestGen[1].DeltaPhi(pRestGen[2]) < 1.15)
851 for(Int_t i = 0; i < nGenSel; i++)
853 xGen[i] = 2*vRestGen[i].E()/eSumGen;
856 Printf("***************** Values of Dalitz variables are : %f, %f, %f ****************\n", xGen[0], xGen[1], xGen[2]);
858 Printf("***************** fXSection = %f ******************\n", fXsection);
860 fhX3X4Gen60->Fill(xGen[0], xGen[1], fXsection);
862 if(eSumGen > 60 && eSumGen <= 100)
863 fhX3X4Gen60100->Fill(xGen[0], xGen[1], fXsection);
866 fhX3X4Gen100->Fill(xGen[0], xGen[1], fXsection);
868 FillTopology(fhX3X4Gen, fhMu34Gen, fhMu45Gen, fhMu35Gen, xGen, pRestGen, fXsection);
873 //_______________________________________________histos for MC_____________________________________________________
876 //_______________________________________________histos AOD________________________________________________________
878 // Printf("Event Number : %d, Number of gen jets : %d ", fEntry, nGenJets);
884 AliAODJet recSelJets[kMaxJets];
886 for(Int_t i = 0; i < nRecJets; i++)
890 recSelJets[nRecSel] = recJets[i];
897 for(Int_t j = 0; j < nRecJets; j++)
901 Double_t dRij = recJets[i].DeltaR(&recJets[j]);
903 if(dRij > 2*fR) tag1++;
908 if(tag1/counter1 == 1)
910 recSelJets[nRecSel] = recJets[i];
917 if(nRecSel == 0) return;
919 //sort rec/gen jets by energy in C.M.S
920 for (Int_t rj = 0; rj < nRecSel; rj++)
922 eRec[rj] = recSelJets[rj].E();
925 Int_t nAODtracks = fAOD->GetNumberOfTracks();
926 Int_t nTracks = 0; //tracks accepted in the whole event
927 Int_t nTracksALL = 0;
928 TLorentzVector jetTracks[kTracks];
929 TLorentzVector jetTracksSort[kTracks];
930 Double_t * eTracks = new Double_t[kTracks];
931 Double_t pTracks[kTracks];
932 Int_t * idxTracks = new Int_t[kTracks];
933 Double_t eventShapesRec[4];
934 Int_t jetMult[kMaxJets];
935 // TLorentzVector vTracksAll[kTracks];
936 // Double_t pTracksAll[kTracks];
938 AliAODJet jetRecAcc[kMaxJets];
939 Int_t nJetTracks = 0;
941 AliAODTrack jetTrack[kTracks];
942 Double_t * cv = new Double_t[21];
943 TMath::Sort(nRecSel, eRec, idxRec);
944 for (Int_t rj = 0; rj < nRecSel; rj++)
947 eJetRec[rj] = eRec[idxRec[rj]];
948 jetRec[rj] = recSelJets[idxRec[rj]];
949 TRefArray * jetTracksAOD = dynamic_cast<TRefArray*>(jetRec[rj].GetRefTracks());
950 if(!jetTracksAOD) continue;
951 if(jetTracksAOD->GetEntries() < 3) continue;
952 for(Int_t i = 0; i < jetTracksAOD->GetEntries(); i++)
954 AliAODTrack * track = (AliAODTrack*)jetTracksAOD->At(i);
955 track->GetCovarianceXYZPxPyPz(cv);
956 if(cv[14] > 1000.) continue;
957 // jetTrack[nTracks] = *track;
958 // jetTracks[nTracks].SetPxPyPzE(jetTrack[nTracks].Px(), jetTrack[nTracks].Py(), jetTrack[nTracks].Pz(), jetTrack[nTracks].E());
959 // eTracks[nTracks] = jetTracks[nTracks].E();
960 // pTracks[nTracks] = jetTracks[nTracks].Pt();
964 if(nJetTracks < 3) continue;
965 jetRecAcc[nAccJets] = jetRec[rj];
966 jetMult[nAccJets] = jetTracksAOD->GetEntries();
970 if (nAccJets == 0) return;
972 for(Int_t i = 0; i < nAODtracks; i++)
974 AliAODTrack * track = dynamic_cast<AliAODTrack*>(fAOD->GetTrack(i));
976 track->GetCovarianceXYZPxPyPz(cv);
977 if(cv[14] > 1000.) continue;
978 jetTrack[nTracksALL] = *track;
979 jetTracks[nTracksALL].SetPxPyPzE(jetTrack[nTracksALL].Px(), jetTrack[nTracksALL].Py(), jetTrack[nTracksALL].Pz(), jetTrack[nTracksALL].E());
980 eTracks[nTracksALL] = jetTracks[nTracksALL].E();
981 pTracks[nTracksALL] = jetTracks[nTracksALL].Pt();
986 TLorentzVector vTrack[kTracks];
987 TMath::Sort(nTracksALL, pTracks, idxTracks);
988 for(Int_t i = 0; i < nTracksALL; i++)
990 jetTracksSort[i] = jetTracks[idxTracks[i]];
991 pTrack[i].SetXYZ(jetTracksSort[i].Px(), jetTracksSort[i].Py(), jetTracksSort[i].Pz());
992 vTrack[i].SetPxPyPzE(jetTracksSort[i].Px(), jetTracksSort[i].Py(), jetTracksSort[i].Pz(), jetTracksSort[i].E());
995 for (Int_t i = 0; i < nAccJets; ++i)
997 vRec[i].SetPxPyPzE(jetRecAcc[i].Px(), jetRecAcc[i].Py(), jetRecAcc[i].Pz(), jetRecAcc[i].E());
998 pRec[i].SetXYZ(vRec[i].Px(), vRec[i].Py(), vRec[i].Pz());
1002 //Thrust, iterative method, AODs
1003 TVector3 n01 = pTrack[0].Unit();
1007 // if(fGlobVar == 1)
1009 Printf("*********Shapes for AOD********");
1010 AliAnalysisHelperJetTasks::GetEventShapes(n01, pTrack, nTracksALL, eventShapesRec);
1012 if(eventShapesRec[0] < 2/TMath::Pi()){
1013 Double_t eventShapesTest[4];
1015 Int_t rnd_max = nTracksALL;
1016 Int_t k = (rand()%rnd_max)+3;
1017 while(TMath::Abs(pTrack[k].X()) < 10e-5 && TMath::Abs(pTrack[k].Y()) < 10e-5){
1021 n01Test = pTrack[k].Unit();
1023 AliAnalysisHelperJetTasks::GetEventShapes(n01Test, pTrack, nTracksALL, eventShapesTest);
1024 eventShapesRec[0] = TMath::Max(eventShapesRec[0], eventShapesTest[0]);
1025 if(TMath::Abs(eventShapesRec[0]-eventShapesTest[0]) < 10e-7) n01 = n01Test;
1030 // Double_t Max3 = TMath::Max(eventShapesRec0[0],eventShapesRec1[0]);
1031 // Double_t Max4 = TMath::Max(eventShapesRec3[0],eventShapesRec2[0]);
1033 Double_t thrust = eventShapesRec[0];
1035 if(eventShapesRec[0] > 0.8)
1037 for(Int_t i = 0; i < nAccJets; i++)
1038 fhdPhiThrustRec->Fill(n01.DeltaPhi(pRec[i]), jetRecAcc[i].E());
1042 if(eventShapesRec[0] <= 0.8)
1044 for(Int_t i = 0; i < nAccJets; i++)
1045 fhdPhiThrustRecALL->Fill(n01.DeltaPhi(pRec[i]), jetRecAcc[i].E());
1051 fhThrustRec2->Fill(thrust, fXsection);
1054 fhThrustRec3->Fill(thrust, fXsection);
1062 fhARec2->Fill(eventShapesRec[2], fXsection);
1063 fhSRec2->Fill(eventShapesRec[1], fXsection);
1064 fhCRec2->Fill(eventShapesRec[3], fXsection);
1069 fhARec3->Fill(eventShapesRec[2], fXsection);
1070 fhSRec3->Fill(eventShapesRec[1], fXsection);
1071 fhCRec3->Fill(eventShapesRec[3], fXsection);
1077 //rest frame for reconstructed jets
1078 Double_t fPx = vsumRec.Px();
1079 Double_t fPy = vsumRec.Py();
1080 Double_t fPz = vsumRec.Pz();
1081 Double_t fE = vsumRec.E();
1083 TVector3 pTrackRest[kTracks];
1084 for(Int_t j = 0; j < nTracks; j++)
1086 vTrack[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1087 pTrackRest[j].SetXYZ(vTrack[j].Px(), vTrack[j].Py(),vTrack[j].Pz());
1090 Double_t eRestRec[kMaxJets];
1091 Int_t idxRestRec[kMaxJets];
1092 for (Int_t j = 0; j < nAccJets; j++)
1094 vRec[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1095 eRestRec[j] = vRec[j].E();
1096 eSumRec += vRec[j].E();
1099 TMath::Sort(nAccJets, eRestRec, idxRestRec);
1100 for (Int_t i = 0; i < nAccJets; i++)
1102 vRestRec[i] = vRec[idxRestRec[i]];
1103 pRestRec[i].SetXYZ(vRestRec[i].Px(), vRestRec[i].Py(), vRestRec[i].Pz());
1104 psumRestRec += pRestRec[i].Perp();
1109 // if(pRest[1].DeltaPhi(pRest[2]) > 0.95 && pRest[1].DeltaPhi(pRest[2]) < 1.15)
1111 fhInOut->Fill(nGenSel);
1112 // for(Int_t j = 0; j < nTracksALL; j++)
1114 // vTracksAll[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1115 // pTracksAll[j].SetXYZ(vTracksAll[j].Px(), vTracksAll[j].Py(),vTracksAll[j].Pz());
1116 // fhdPhiRec->Fill(pRest[0].DeltaPhi(pTracksAll[j]), pTracksAll[j].Perp(), fXsection);
1118 //and the Dalitz variables and Energy distributions in the rest frame
1119 for (Int_t i = 0; i < nAccJets; i++)
1120 xRec[i] = 2*vRestRec[i].E()/eSumRec;
1123 fhX3X4Rec60->Fill(xRec[0], xRec[1], fXsection);
1125 if(eSumRec > 60 && eSumRec <= 100)
1126 fhX3X4Rec60100->Fill(xRec[0], xRec[1], fXsection);
1129 fhX3X4Rec100->Fill(xRec[0], xRec[1], fXsection);
1131 if(nAccJets == 3 && nAccJets == nGenJets)
1133 fhX3->Fill(xGen[0], TMath::Abs(xGen[0]-xRec[0])/xGen[0], fXsection);
1134 fhX4->Fill(xGen[1], TMath::Abs(xGen[1]-xRec[1])/xGen[1], fXsection);
1135 fhX5->Fill(xGen[2], TMath::Abs(xGen[2]-xRec[2])/xGen[2], fXsection);
1138 FillTopology(fhX3X4Rec, fhMu34Rec, fhMu45Rec, fhMu35Rec, xRec, pRestRec, fXsection);
1140 Printf("%s:%d",(char*)__FILE__,__LINE__);
1144 Printf("%s:%d Data Posted",(char*)__FILE__,__LINE__);
1148 //__________________________________________________________________________________________________________________________________________________
1149 void AliAnalysisTaskThreeJets::Terminate(Option_t *)
1151 printf("AnalysisJetCorrelation::Terminate()");
1155 //_______________________________________User defined functions_____________________________________________________________________________________
1156 void AliAnalysisTaskThreeJets::FillTopology(TH2F * Dalitz, TH1F * fhMu34, TH1F * fhMu45, TH1F * fhMu35, Double_t * x, TVector3 * pRest, Double_t xsection)
1159 // fill the topology histos
1161 Dalitz->Fill(x[0], x[1], xsection);
1162 fhMu35->Fill(TMath::Sqrt(x[0]*x[2]*(1-(pRest[0].Unit()).Dot(pRest[2].Unit()))/2), xsection);
1163 fhMu34->Fill(TMath::Sqrt(x[0]*x[1]*(1-(pRest[0].Unit()).Dot(pRest[1].Unit()))/2), xsection);
1164 fhMu45->Fill(TMath::Sqrt(x[1]*x[2]*(1-(pRest[1].Unit()).Dot(pRest[2].Unit()))/2), xsection);
1167 //_____________________________________________________________________________________________________________________________
1169 Bool_t AliAnalysisTaskThreeJets::IsPrimChar(TParticle* aParticle, Int_t aTotalPrimaries, Bool_t adebug)
1172 // this function checks if a particle from the event generator (i.e. among the nPrim particles in the stack)
1173 // shall be counted as a primary particle
1175 // This function or a equivalent should be available in some common place of AliRoot
1177 // WARNING: Call this function only for particles that are among the particles from the event generator!
1178 // --> stack->Particle(id) with id < stack->GetNprimary()
1180 // if the particle has a daughter primary, we do not want to count it
1181 if (aParticle->GetFirstDaughter() != -1 && aParticle->GetFirstDaughter() < aTotalPrimaries)
1184 printf("Dropping particle because it has a daughter among the primaries.\n");
1188 Int_t pdgCode = TMath::Abs(aParticle->GetPdgCode());
1191 // skip quarks and gluon
1192 if (pdgCode <= 10 || pdgCode == 21)
1195 printf("Dropping particle because it is a quark or gluon.\n");
1199 Int_t status = aParticle->GetStatusCode();
1200 // skip non final state particles..
1203 printf("Dropping particle because it is not a final state particle.\n");
1207 if (strcmp(aParticle->GetName(),"XXX") == 0)
1209 Printf("WARNING: There is a particle named XXX (pdg code %d).", pdgCode);
1213 TParticlePDG* pdgPart = aParticle->GetPDG();
1215 if (strcmp(pdgPart->ParticleClass(),"Unknown") == 0)
1217 Printf("WARNING: There is a particle with an unknown particle class (pdg code %d).", pdgCode);
1221 if (pdgPart->Charge() == 0)
1224 printf("Dropping particle because it is not charged.\n");
1231 //______________________________________________________________________________________________________
1234 //__________________________________________________________________________________________________________________________
1236 Double_t AliAnalysisTaskThreeJets::Exponent(Double_t x,const Double_t * const par) const
1238 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;
1241 Double_t AliAnalysisTaskThreeJets::Exponent2(Double_t x,const Double_t * const par) const
1243 return par[0]*TMath::Power(1/TMath::E(), TMath::Power(par[1]/x, par[2]))+par[3]*x;
1246 Double_t AliAnalysisTaskThreeJets::Gauss(Double_t x,const Double_t * const par) const
1248 return 1/(par[1])*TMath::Power(1/TMath::E(), 0.5*(x-par[0])*(x-par[0])/(par[1]*par[1]));
1251 Double_t AliAnalysisTaskThreeJets::Total(Double_t x,const Double_t * const par) const
1253 return Exponent(x, par)+Gauss(x, &par[4]);