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
219 TTree *tree = AliAnalysisManager::GetAnalysisManager()->GetTree();
220 Float_t xsection = 0;
223 Float_t fAvgTrials = 1;
225 TFile *curfile = tree->GetCurrentFile();
227 Error("Notify","No current file");
230 AliAnalysisHelperJetTasks::PythiaInfoFromFile(curfile->GetName(),xsection,ftrials);
231 // construct a poor man average trials
232 Float_t nEntries = (Float_t)tree->GetTree()->GetEntries();
233 if(ftrials>=nEntries)fAvgTrials = ftrials/nEntries; // CKB take this into account for normalisation
236 if(xsection>0)fXsection = xsection;
243 //___________________________________________________________________________________________________________________________________
244 void AliAnalysisTaskThreeJets::UserCreateOutputObjects()
247 // Create the output container
249 // Printf("Analysing event %s :: # %5d\n", gSystem->pwd(), (Int_t) fEntry);
251 printf("AnalysisTaskJetSpectrum::UserCreateOutputObjects() \n");
255 fhX3X4Gen = new TH2F("X3vsX4Gen", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
256 fhX3X4Gen->SetXTitle("X_{3}");
257 fhX3X4Gen->SetYTitle("X_{4}");
259 fList->Add(fhX3X4Gen);
261 fhX3X4Rec = new TH2F("X3vsX4Rec", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
262 fhX3X4Rec->SetXTitle("X_{3}");
263 fhX3X4Rec->SetYTitle("X_{4}");
265 fList->Add(fhX3X4Rec);
267 fhMu35Rec = new TH1F("Mu35Rec", "", 20,0.1,0.8);
269 fhMu35Rec->SetXTitle("#mu_{35}");
270 fhMu35Rec->SetYTitle("#frac{dN}{d#mu_{35Rec}}");
271 fList->Add(fhMu35Rec);
273 fhMu34Rec = new TH1F("Mu34Rec", "", 20,0.5,1);
275 fhMu34Rec->SetXTitle("#mu_{34}");
276 fhMu34Rec->SetYTitle("#frac{dN}{d#mu_{34}}");
277 fList->Add(fhMu34Rec);
279 fhMu45Rec = new TH1F("Mu45Rec", "", 20,0,0.65);
281 fhMu45Rec->SetXTitle("#mu_{45}");
282 fhMu45Rec->SetYTitle("#frac{dN}{d#mu_{45}}");
283 fList->Add(fhMu45Rec);
285 fhMu35Gen = new TH1F("Mu35Gen", "", 20,0.1,0.8);
287 fhMu35Gen->SetXTitle("#mu_{35Gen}");
288 fhMu35Gen->SetYTitle("#frac{dN}{d#mu_{35Gen}}");
289 fList->Add(fhMu35Gen);
291 fhMu34Gen = new TH1F("Mu34Gen", "", 20,0.5,1);
293 fhMu34Gen->SetXTitle("#mu_{34Gen}");
294 fhMu34Gen->SetYTitle("#frac{dN}{d#mu_{34Gen}}");
295 fList->Add(fhMu34Gen);
297 fhMu45Gen = new TH1F("Mu45Gen", "", 20,0,0.65);
299 fhMu45Gen->SetXTitle("#mu_{45Gen}");
300 fhMu45Gen->SetYTitle("#frac{dN}{d#mu_{45}}");
301 fList->Add(fhMu45Gen);
303 fhInOut = new TH1I("InOut", "", 6, 0, 6);
304 fhInOut->SetXTitle("#RecJets_{GenJets=3}");
305 fhInOut->SetYTitle("#Entries");
308 fhThrustGen2 = new TH1F("ThrustGen2", "", 50, 0.5, 1);
309 fhThrustGen2->Sumw2();
310 fList->Add(fhThrustGen2);
312 fhThrustGen3 = new TH1F("ThrustGen3", "", 50, 0.5, 1);
313 fhThrustGen3->Sumw2();
314 fList->Add(fhThrustGen3);
316 fhThrustRec2 = new TH1F("ThrustRec2", "", 50, 0.5, 1);
317 fhThrustRec2->Sumw2();
318 fList->Add(fhThrustRec2);
320 fhThrustRec3 = new TH1F("ThrustRec3", "", 50, 0.5, 1);
321 fhThrustRec3->Sumw2();
322 fList->Add(fhThrustRec3);
324 fhCGen2 = new TH1F("CGen2", "", 100, 0, 1);
328 fhCGen3 = new TH1F("CGen3", "", 100, 0, 1);
332 fhCRec2 = new TH1F("CRec2", "", 100, 0, 1);
336 fhCRec3 = new TH1F("CRec3", "", 100, 0, 1);
340 fhSGen2 = new TH1F("SGen2", "", 100, 0, 1);
343 fhSGen3 = new TH1F("SGen3", "", 100, 0, 1);
346 fhSRec2 = new TH1F("SRec2", "", 100, 0, 1);
349 fhSRec3 = new TH1F("SRec3", "", 100, 0, 1);
352 fhAGen2 = new TH1F("AGen2", "", 50, 0, 0.5);
355 fhAGen3 = new TH1F("AGen3", "", 50, 0, 0.5);
358 fhARec2 = new TH1F("ARec2", "", 50, 0, 0.5);
361 fhARec3 = new TH1F("ARec3", "", 50, 0, 0.5);
364 fhX3 = new TH2F("X3", "", 22, 0.6, 1.02, 100, 0, 1);
365 fhX3->SetYTitle("|X_{3}^{MC} - X_{3}^{AOD}|/X_{3}^{MC}");
366 fhX3->SetXTitle("X_{3}");
370 fhX4 = new TH2F("X4", "",33, 0.4, 1.02, 100, 0, 1);
371 fhX4->SetYTitle("|X_{4}^{MC} - X_{4}^{AOD}|/X_{4}^{MC}");
372 fhX4->SetXTitle("X_{4}");
376 fhX5 = new TH2F("X5", "",100, 0., 1., 100, 0, 1);
377 fhX5->SetYTitle("|X_{5}^{MC} - X_{5}^{AOD}|/X_{5}^{MC}");
378 fhX5->SetXTitle("X_{5}");
382 fhXSec = new TProfile("XSec", "", 200, 0, 200, 0, 1);
385 fhX3X4Rec60 = new TH2F("X3vsX4Rec60", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
386 fhX3X4Rec60->SetXTitle("X_{3}");
387 fhX3X4Rec60->SetYTitle("X_{4}");
388 fhX3X4Rec60->Sumw2();
389 fList->Add(fhX3X4Rec60);
391 fhX3X4Rec60100 = new TH2F("X3vsX4Rec60100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
392 fhX3X4Rec60100->SetXTitle("X_{3}");
393 fhX3X4Rec60100->SetYTitle("X_{4}");
394 fhX3X4Rec60100->Sumw2();
395 fList->Add(fhX3X4Rec60100);
397 fhX3X4Rec100 = new TH2F("X3vsX4Rec100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
398 fhX3X4Rec100->SetXTitle("X_{3}");
399 fhX3X4Rec100->SetYTitle("X_{4}");
400 fhX3X4Rec100->Sumw2();
401 fList->Add(fhX3X4Rec100);
403 fhX3X4Gen60 = new TH2F("X3vsX4Gen60", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
404 fhX3X4Gen60->SetXTitle("X_{3}");
405 fhX3X4Gen60->SetYTitle("X_{4}");
406 fhX3X4Gen60->Sumw2();
407 fList->Add(fhX3X4Gen60);
409 fhX3X4Gen60100 = new TH2F("X3vsX4Gen60100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
410 fhX3X4Gen60100->SetXTitle("X_{3}");
411 fhX3X4Gen60100->SetYTitle("X_{4}");
412 fhX3X4Gen60100->Sumw2();
413 fList->Add(fhX3X4Gen60100);
415 fhX3X4Gen100 = new TH2F("X3vsX4Gen100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
416 fhX3X4Gen100->SetXTitle("X_{3}");
417 fhX3X4Gen100->SetYTitle("X_{4}");
418 fhX3X4Gen100->Sumw2();
419 fList->Add(fhX3X4Gen100);
421 fhdPhiThrustGen = new TH2F("dPhiThrustGen", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
422 fhdPhiThrustGen->Sumw2();
423 fList->Add(fhdPhiThrustGen);
425 fhdPhiThrustGenALL = new TH2F("dPhiThrustGenALL", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
426 fhdPhiThrustGenALL->Sumw2();
427 fList->Add(fhdPhiThrustGenALL);
429 fhdPhiThrustRec = new TH2F("dPhiThrustRec", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
430 fhdPhiThrustRec->Sumw2();
431 fList->Add(fhdPhiThrustRec);
433 fhdPhiThrustRecALL = new TH2F("dPhiThrustRecALL", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
434 fhdPhiThrustRecALL->Sumw2();
435 fList->Add(fhdPhiThrustRecALL);
437 if(fDebug)Printf("UserCreateOutputObjects finished\n");
440 //__________________________________________________________________________________________________________________________________________
441 void AliAnalysisTaskThreeJets::Init()
443 printf("AliAnalysisJetCut::Init() \n");
446 //____________________________________________________________________________________________________________________________________________
447 void AliAnalysisTaskThreeJets::UserExec(Option_t * )
449 if (fDebug > 1) printf("AliAnlysisTaskThreeJets::Analysing event # %5d\n", (Int_t) fEntry);
452 fAOD = dynamic_cast<AliAODEvent*>(InputEvent());
454 Printf("%s:%d AODEvent not found in Input Manager %d",(char*)__FILE__,__LINE__,fUseAODInput);
459 // assume that the AOD is in the general output...
462 Printf("%s:%d AODEvent not found in the Output",(char*)__FILE__,__LINE__);
467 AliMCEvent* mcEvent =MCEvent();
469 Printf("%s:%d no mcEvent",(char*)__FILE__,__LINE__);
473 if (fDebug > 10)Printf("%s:%d",(char*)__FILE__,__LINE__);
476 AliAODVertex * pvtx = dynamic_cast<AliAODVertex*>(fAOD->GetPrimaryVertex());
478 if (fDebug > 1) Printf("%s:%d AOD Vertex found",(char*)__FILE__,__LINE__);
481 AliAODJet genJetsPythia[kMaxJets];
482 Int_t nPythiaGenJets = 0;
484 AliAODJet genJets[kMaxJets];
487 AliAODJet recJets[kMaxJets];
490 //array of reconstructed jets from the AOD input
491 TClonesArray *aodRecJets = dynamic_cast<TClonesArray*>(fAOD->FindListObject(fBranchRec.Data()));
493 Printf("%s:%d no reconstructed Jet array with name %s in AOD",(char*)__FILE__,__LINE__,fBranchRec.Data());
497 // reconstructed jets
498 nRecJets = aodRecJets->GetEntries();
499 nRecJets = TMath::Min(nRecJets, kMaxJets);
501 for(int ir = 0;ir < nRecJets;++ir)
503 AliAODJet *tmp = dynamic_cast<AliAODJet*>(aodRecJets->At(ir));
508 // If we set a second branch for the input jets fetch this
509 TClonesArray * aodGenJets = dynamic_cast<TClonesArray*>(fAOD->FindListObject(fBranchGen.Data()));
513 printf("NO MC jets Found\n");
518 nGenJets = aodGenJets->GetEntries();
519 nGenJets = TMath::Min(nGenJets, kMaxJets);
521 for(Int_t ig =0 ; ig < nGenJets; ++ig)
523 AliAODJet * tmp = dynamic_cast<AliAODJet*>(aodGenJets->At(ig));
528 AliGenPythiaEventHeader* pythiaGenHeader = AliAnalysisHelperJetTasks::GetPythiaEventHeader(mcEvent);
529 if(!pythiaGenHeader){
530 Printf("!!!NO GEN HEADER AVALABLE!!!");
534 // Int_t ProcessType = pythiaGenHeader->ProcessType();
535 // if(ProcessType != 28) return;
536 fhXSec->Fill(pythiaGenHeader->GetPtHard(), fXsection);
537 nPythiaGenJets = pythiaGenHeader->NTriggerJets();
538 nPythiaGenJets = TMath::Min(nPythiaGenJets, kMaxJets);
540 Double_t eRec[kMaxJets];
541 Double_t eGen[kMaxJets];
543 Double_t eJetRec[kMaxJets];
544 // Double_t EJetGen[kMaxJets];
546 AliAODJet jetRec[kMaxJets];
547 AliAODJet jetGen[kMaxJets];
549 Int_t idxRec[kMaxJets];
550 Int_t idxGen[kMaxJets];
552 Double_t xRec[kMaxJets];
553 Double_t xGen[kMaxJets];
555 Double_t eSumRec = 0;
556 Double_t eSumGen = 0;
558 TLorentzVector vRec[kMaxJets];
559 TLorentzVector vRestRec[kMaxJets];
561 TLorentzVector vGen[kMaxJets];
562 TLorentzVector vRestGen[kMaxJets];
564 TLorentzVector vsumRec;
565 TLorentzVector vsumGen;
567 TVector3 pRec[kMaxJets];
568 TVector3 pGen[kMaxJets];
570 TVector3 pTrack[kTracks];
572 TVector3 pRestRec[kMaxJets];
573 TVector3 pRestGen[kMaxJets];
575 Double_t psumRestRec = 0;
576 // Double_t psumRestGen = 0;
577 //Pythia_________________________________________________________________________________________________________________
579 for(int ip = 0;ip < nPythiaGenJets;++ip)
581 if(ip>=kMaxJets)continue;
583 pythiaGenHeader->TriggerJet(ip,p);
584 genJetsPythia[ip].SetPxPyPzE(p[0],p[1],p[2],p[3]);
587 //_________________________________________________________________________________________________________________________
590 //________histos for MC___________________________________________________________________________________________________________
596 AliAODJet selJets[kMaxJets];
598 for(Int_t i = 0; i < nGenJets; i++)
602 selJets[nGenSel] = genJets[i];
609 for(Int_t j = 0; j < nGenJets; j++)
613 Double_t dRij = genJets[i].DeltaR(&genJets[j]);
615 if(dRij > 2*fR) tag++;
622 selJets[nGenSel] = genJets[i];
629 if(nGenSel == 0) return;
631 for (Int_t gj = 0; gj < nGenSel; gj++)
633 eGen[gj] = selJets[gj].E();
636 TMath::Sort(nGenSel, eGen, idxGen);
637 for (Int_t ig = 0; ig < nGenSel; ig++)
639 jetGen[ig] = selJets[idxGen[ig]];
641 AliStack * stack = mcEvent->Stack();
642 Int_t nMCtracks = stack->GetNprimary();
643 Double_t * eTracksMC = new Double_t[kTracks];
644 Double_t pTracksMC[kTracks];
645 Int_t * idxTracksMC = new Int_t[kTracks];
646 TLorentzVector jetTracksMC[kTracks];
647 TLorentzVector jetTracksSortMC[kTracks];
648 TVector3 pTrackMC[kTracks];
649 TLorentzVector vTrackMCAll[kTracks];
650 Double_t pTrackMCAll[kTracks];
651 TLorentzVector vTrackMC[kTracks];
652 TVector3 pTrackMCBoost[kTracks];
653 Double_t eventShapes[4];
656 Int_t nInJet[kMaxJets];
657 TLorentzVector inJetPartV[kMaxJets][kTracks];
658 Int_t nAllTracksMC = 0;
660 for(Int_t iTrack = 0; iTrack < nMCtracks; iTrack++)
662 TParticle * part = (TParticle*)stack->Particle(iTrack);
664 Double_t fEta = part->Eta();
665 if(TMath::Abs(fEta) > .9) continue;
666 if(!IsPrimChar(part, nMCtracks, 0)) continue;
667 vTrackMCAll[nAllTracksMC].SetPxPyPzE(part->Px(), part->Py(), part->Pz(), part->Energy());
668 pTrackMCAll[nAllTracksMC] = part->Pt();
671 if(nAllTracksMC == 0) return;
672 for(Int_t iJet = 0; iJet < nGenSel; iJet++)
674 Int_t nJetTracks = 0;
675 for(Int_t i = 0; i < nAllTracksMC; i++)
677 Double_t dPhi = (jetGen[iJet].Phi()-vTrackMCAll[i].Phi());
678 if(dPhi > TMath::Pi()) dPhi = dPhi - 2.*TMath::Pi();
679 if(dPhi < (-1.*TMath::Pi())) dPhi = dPhi + 2.*TMath::Pi();
680 Double_t dEta = (jetGen[iJet].Eta()-vTrackMCAll[i].Eta());
681 Double_t deltaR = TMath::Sqrt(dPhi*dPhi+dEta*dEta);
682 if(deltaR < fR && vTrackMCAll[i].Pt() > 1.5)
684 jetTracksMC[nAccTr] = vTrackMCAll[i];
685 eTracksMC[nAccTr] = vTrackMCAll[i].E();
686 pTracksMC[nAccTr] = vTrackMCAll[i].Pt();
687 inJetPartV[iJet][nJetTracks].SetPxPyPzE(vTrackMCAll[i].Px(), vTrackMCAll[i].Py(), vTrackMCAll[i].Pz(),vTrackMCAll[i].E());
692 nInJet[iJet] = nJetTracks;
695 if(nAccTr == 0) return;
696 if(fDebug)Printf("*********** Number of Jets : %d ***************\n", nGenSel);
697 Double_t pTav[kMaxJets];
698 for(Int_t i = 0; i < nGenSel; i++)
701 if(fDebug)Printf("*********** Number of particles in Jet %d = %d *******************\n", i+3, nInJet[i]);
702 for(Int_t iT = 0; iT < nInJet[i]; iT++)
704 Double_t pt = inJetPartV[i][iT].Pt();
707 pTav[i] = pTsum/nInJet[i];
710 TMath::Sort(nAllTracksMC, pTrackMCAll, idxTracksMC);
711 for(Int_t i = 0; i < nAllTracksMC; i++)
713 jetTracksSortMC[i] = vTrackMCAll[idxTracksMC[i]];
714 pTrackMC[i].SetXYZ(jetTracksSortMC[i].Px(), jetTracksSortMC[i].Py(), jetTracksSortMC[i].Pz());
715 vTrackMC[i].SetPxPyPzE(jetTracksSortMC[i].Px(), jetTracksSortMC[i].Py(), jetTracksSortMC[i].Pz(), jetTracksSortMC[i].E());
718 TVector3 n01MC = pTrackMC[0].Unit();
721 //Thrust calculation, iterative method
726 if(fDebug)Printf("**************Shapes for MC*************");
727 AliAnalysisHelperJetTasks::GetEventShapes(n01MC, pTrackMC, nAllTracksMC, eventShapes);
729 if(eventShapes[0] < 2/TMath::Pi()){
730 Double_t eventShapesTest[4];
732 Int_t rnd_max = nAllTracksMC;
733 Int_t k = (rand()%rnd_max)+3;
734 while(TMath::Abs(pTrackMC[k].X()) < 10e-5 && TMath::Abs(pTrackMC[k].Y()) < 10e-5){
737 n01Test = pTrackMC[k].Unit();
739 AliAnalysisHelperJetTasks::GetEventShapes(n01Test, pTrackMC, nAllTracksMC, eventShapesTest);
740 eventShapes[0] = TMath::Max(eventShapes[0], eventShapesTest[0]);
741 if(TMath::Abs(eventShapes[0]-eventShapesTest[0]) < 10e-7) n01MC = n01Test;
744 Double_t s = eventShapes[1];
745 Double_t a = eventShapes[2];
746 Double_t c = eventShapes[3];
765 Double_t thrust01MC = eventShapes[0];
770 fhThrustGen2->Fill(thrust01MC, fXsection);
773 fhThrustGen3->Fill(thrust01MC, fXsection);
780 for (Int_t i = 0; i < nGenSel; ++i)
782 vGen[i].SetPxPyPzE(jetGen[i].Px(), jetGen[i].Py(), jetGen[i].Pz(), jetGen[i].E());
783 pGen[i].SetXYZ(vGen[i].Px(), vGen[i].Py(), vGen[i].Pz());
786 if(eventShapes[0] > 0.8 && nGenSel > 1)
788 for(Int_t i = 0; i < nGenSel; i++)
789 fhdPhiThrustGen->Fill(n01MC.DeltaPhi(pGen[i]), jetGen[i].E());
792 if(eventShapes[0] <= 0.8 && nGenSel > 1)
794 for(Int_t i = 0; i < nGenSel; i++)
795 fhdPhiThrustGenALL->Fill(n01MC.DeltaPhi(pGen[i]), jetGen[i].E());
798 Double_t fPxGen = vsumGen.Px();
799 Double_t fPyGen = vsumGen.Py();
800 Double_t fPzGen = vsumGen.Pz();
801 Double_t fEGen = vsumGen.E();
803 Double_t eRestGen[kMaxJets];
804 for (Int_t j = 0; j < nGenSel; j++)
806 vGen[j].Boost(-fPxGen/fEGen, -fPyGen/fEGen, -fPzGen/fEGen);
807 eRestGen[j] = vGen[j].E();
810 for (Int_t j = 0; j < nAccTr; j++)
812 vTrackMC[j].Boost(-fPxGen/fEGen, -fPyGen/fEGen, -fPzGen/fEGen);
813 pTrackMCBoost[j].SetXYZ(vTrackMC[j].Px(),vTrackMC[j].Py(),vTrackMC[j].Pz());
816 Int_t idxRestGen[kMaxJets];
817 TMath::Sort(nGenSel, eRestGen, idxRestGen);
818 for(Int_t j = 0; j < nGenSel; j++)
820 vRestGen[j] = vGen[idxRestGen[j]];
821 eSumGen += vRestGen[j].E();
826 // if(nInJet[0] < 3 || nInJet[1] < 3 || nInJet[2] < 3) return;
827 // if(pRestGen[1].DeltaPhi(pRestGen[2]) > 0.95 && pRestGen[1].DeltaPhi(pRestGen[2]) < 1.15)
830 for(Int_t i = 0; i < nGenSel; i++)
832 xGen[i] = 2*vRestGen[i].E()/eSumGen;
835 if(fDebug)Printf("***************** Values of Dalitz variables are : %f, %f, %f ****************\n", xGen[0], xGen[1], xGen[2]);
837 if(fDebug)Printf("***************** fXSection = %f ******************\n", fXsection);
839 fhX3X4Gen60->Fill(xGen[0], xGen[1], fXsection);
841 if(eSumGen > 60 && eSumGen <= 100)
842 fhX3X4Gen60100->Fill(xGen[0], xGen[1], fXsection);
845 fhX3X4Gen100->Fill(xGen[0], xGen[1], fXsection);
847 FillTopology(fhX3X4Gen, fhMu34Gen, fhMu45Gen, fhMu35Gen, xGen, pRestGen, fXsection);
852 //_______________________________________________histos for MC_____________________________________________________
855 //_______________________________________________histos AOD________________________________________________________
857 // Printf("Event Number : %d, Number of gen jets : %d ", fEntry, nGenJets);
863 AliAODJet recSelJets[kMaxJets];
865 for(Int_t i = 0; i < nRecJets; i++)
869 recSelJets[nRecSel] = recJets[i];
876 for(Int_t j = 0; j < nRecJets; j++)
880 Double_t dRij = recJets[i].DeltaR(&recJets[j]);
882 if(dRij > 2*fR) tag1++;
887 if(tag1/counter1 == 1)
889 recSelJets[nRecSel] = recJets[i];
896 if(nRecSel == 0) return;
898 //sort rec/gen jets by energy in C.M.S
899 for (Int_t rj = 0; rj < nRecSel; rj++)
901 eRec[rj] = recSelJets[rj].E();
904 Int_t nAODtracks = fAOD->GetNumberOfTracks();
905 Int_t nTracks = 0; //tracks accepted in the whole event
906 Int_t nTracksALL = 0;
907 TLorentzVector jetTracks[kTracks];
908 TLorentzVector jetTracksSort[kTracks];
909 Double_t * eTracks = new Double_t[kTracks];
910 Double_t pTracks[kTracks];
911 Int_t * idxTracks = new Int_t[kTracks];
912 Double_t eventShapesRec[4];
913 Int_t jetMult[kMaxJets];
914 // TLorentzVector vTracksAll[kTracks];
915 // Double_t pTracksAll[kTracks];
917 AliAODJet jetRecAcc[kMaxJets];
918 Int_t nJetTracks = 0;
920 AliAODTrack jetTrack[kTracks];
921 Double_t * cv = new Double_t[21];
922 TMath::Sort(nRecSel, eRec, idxRec);
923 for (Int_t rj = 0; rj < nRecSel; rj++)
926 eJetRec[rj] = eRec[idxRec[rj]];
927 jetRec[rj] = recSelJets[idxRec[rj]];
928 TRefArray * jetTracksAOD = dynamic_cast<TRefArray*>(jetRec[rj].GetRefTracks());
929 if(!jetTracksAOD) continue;
930 if(jetTracksAOD->GetEntries() < 3) continue;
931 for(Int_t i = 0; i < jetTracksAOD->GetEntries(); i++)
933 AliAODTrack * track = (AliAODTrack*)jetTracksAOD->At(i);
934 track->GetCovarianceXYZPxPyPz(cv);
935 if(cv[14] > 1000.) continue;
936 // jetTrack[nTracks] = *track;
937 // jetTracks[nTracks].SetPxPyPzE(jetTrack[nTracks].Px(), jetTrack[nTracks].Py(), jetTrack[nTracks].Pz(), jetTrack[nTracks].E());
938 // eTracks[nTracks] = jetTracks[nTracks].E();
939 // pTracks[nTracks] = jetTracks[nTracks].Pt();
943 if(nJetTracks < 3) continue;
944 jetRecAcc[nAccJets] = jetRec[rj];
945 jetMult[nAccJets] = jetTracksAOD->GetEntries();
949 if (nAccJets == 0) return;
951 for(Int_t i = 0; i < nAODtracks; i++)
953 AliAODTrack * track = dynamic_cast<AliAODTrack*>(fAOD->GetTrack(i));
955 track->GetCovarianceXYZPxPyPz(cv);
956 if(cv[14] > 1000.) continue;
957 jetTrack[nTracksALL] = *track;
958 jetTracks[nTracksALL].SetPxPyPzE(jetTrack[nTracksALL].Px(), jetTrack[nTracksALL].Py(), jetTrack[nTracksALL].Pz(), jetTrack[nTracksALL].E());
959 eTracks[nTracksALL] = jetTracks[nTracksALL].E();
960 pTracks[nTracksALL] = jetTracks[nTracksALL].Pt();
965 TLorentzVector vTrack[kTracks];
966 TMath::Sort(nTracksALL, pTracks, idxTracks);
967 for(Int_t i = 0; i < nTracksALL; i++)
969 jetTracksSort[i] = jetTracks[idxTracks[i]];
970 pTrack[i].SetXYZ(jetTracksSort[i].Px(), jetTracksSort[i].Py(), jetTracksSort[i].Pz());
971 vTrack[i].SetPxPyPzE(jetTracksSort[i].Px(), jetTracksSort[i].Py(), jetTracksSort[i].Pz(), jetTracksSort[i].E());
974 for (Int_t i = 0; i < nAccJets; ++i)
976 vRec[i].SetPxPyPzE(jetRecAcc[i].Px(), jetRecAcc[i].Py(), jetRecAcc[i].Pz(), jetRecAcc[i].E());
977 pRec[i].SetXYZ(vRec[i].Px(), vRec[i].Py(), vRec[i].Pz());
981 //Thrust, iterative method, AODs
982 TVector3 n01 = pTrack[0].Unit();
988 if(fDebug)Printf("*********Shapes for AOD********");
989 AliAnalysisHelperJetTasks::GetEventShapes(n01, pTrack, nTracksALL, eventShapesRec);
991 if(eventShapesRec[0] < 2/TMath::Pi()){
992 Double_t eventShapesTest[4];
994 Int_t rnd_max = nTracksALL;
995 Int_t k = (rand()%rnd_max)+3;
996 while(TMath::Abs(pTrack[k].X()) < 10e-5 && TMath::Abs(pTrack[k].Y()) < 10e-5){
1000 n01Test = pTrack[k].Unit();
1002 AliAnalysisHelperJetTasks::GetEventShapes(n01Test, pTrack, nTracksALL, eventShapesTest);
1003 eventShapesRec[0] = TMath::Max(eventShapesRec[0], eventShapesTest[0]);
1004 if(TMath::Abs(eventShapesRec[0]-eventShapesTest[0]) < 10e-7) n01 = n01Test;
1009 // Double_t Max3 = TMath::Max(eventShapesRec0[0],eventShapesRec1[0]);
1010 // Double_t Max4 = TMath::Max(eventShapesRec3[0],eventShapesRec2[0]);
1012 Double_t thrust = eventShapesRec[0];
1014 if(eventShapesRec[0] > 0.8)
1016 for(Int_t i = 0; i < nAccJets; i++)
1017 fhdPhiThrustRec->Fill(n01.DeltaPhi(pRec[i]), jetRecAcc[i].E());
1021 if(eventShapesRec[0] <= 0.8)
1023 for(Int_t i = 0; i < nAccJets; i++)
1024 fhdPhiThrustRecALL->Fill(n01.DeltaPhi(pRec[i]), jetRecAcc[i].E());
1030 fhThrustRec2->Fill(thrust, fXsection);
1033 fhThrustRec3->Fill(thrust, fXsection);
1041 fhARec2->Fill(eventShapesRec[2], fXsection);
1042 fhSRec2->Fill(eventShapesRec[1], fXsection);
1043 fhCRec2->Fill(eventShapesRec[3], fXsection);
1048 fhARec3->Fill(eventShapesRec[2], fXsection);
1049 fhSRec3->Fill(eventShapesRec[1], fXsection);
1050 fhCRec3->Fill(eventShapesRec[3], fXsection);
1056 //rest frame for reconstructed jets
1057 Double_t fPx = vsumRec.Px();
1058 Double_t fPy = vsumRec.Py();
1059 Double_t fPz = vsumRec.Pz();
1060 Double_t fE = vsumRec.E();
1062 TVector3 pTrackRest[kTracks];
1063 for(Int_t j = 0; j < nTracks; j++)
1065 vTrack[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1066 pTrackRest[j].SetXYZ(vTrack[j].Px(), vTrack[j].Py(),vTrack[j].Pz());
1069 Double_t eRestRec[kMaxJets];
1070 Int_t idxRestRec[kMaxJets];
1071 for (Int_t j = 0; j < nAccJets; j++)
1073 vRec[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1074 eRestRec[j] = vRec[j].E();
1075 eSumRec += vRec[j].E();
1078 TMath::Sort(nAccJets, eRestRec, idxRestRec);
1079 for (Int_t i = 0; i < nAccJets; i++)
1081 vRestRec[i] = vRec[idxRestRec[i]];
1082 pRestRec[i].SetXYZ(vRestRec[i].Px(), vRestRec[i].Py(), vRestRec[i].Pz());
1083 psumRestRec += pRestRec[i].Perp();
1088 // if(pRest[1].DeltaPhi(pRest[2]) > 0.95 && pRest[1].DeltaPhi(pRest[2]) < 1.15)
1090 fhInOut->Fill(nGenSel);
1091 // for(Int_t j = 0; j < nTracksALL; j++)
1093 // vTracksAll[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1094 // pTracksAll[j].SetXYZ(vTracksAll[j].Px(), vTracksAll[j].Py(),vTracksAll[j].Pz());
1095 // fhdPhiRec->Fill(pRest[0].DeltaPhi(pTracksAll[j]), pTracksAll[j].Perp(), fXsection);
1097 //and the Dalitz variables and Energy distributions in the rest frame
1098 for (Int_t i = 0; i < nAccJets; i++)
1099 xRec[i] = 2*vRestRec[i].E()/eSumRec;
1102 fhX3X4Rec60->Fill(xRec[0], xRec[1], fXsection);
1104 if(eSumRec > 60 && eSumRec <= 100)
1105 fhX3X4Rec60100->Fill(xRec[0], xRec[1], fXsection);
1108 fhX3X4Rec100->Fill(xRec[0], xRec[1], fXsection);
1110 if(nAccJets == 3 && nAccJets == nGenJets)
1112 fhX3->Fill(xGen[0], TMath::Abs(xGen[0]-xRec[0])/xGen[0], fXsection);
1113 fhX4->Fill(xGen[1], TMath::Abs(xGen[1]-xRec[1])/xGen[1], fXsection);
1114 fhX5->Fill(xGen[2], TMath::Abs(xGen[2]-xRec[2])/xGen[2], fXsection);
1117 FillTopology(fhX3X4Rec, fhMu34Rec, fhMu45Rec, fhMu35Rec, xRec, pRestRec, fXsection);
1119 if(fDebug)Printf("%s:%d",(char*)__FILE__,__LINE__);
1123 if(fDebug)Printf("%s:%d Data Posted",(char*)__FILE__,__LINE__);
1127 //__________________________________________________________________________________________________________________________________________________
1128 void AliAnalysisTaskThreeJets::Terminate(Option_t *)
1130 if(fDebug)printf(" AliAnalysisTaskThreeJets::Terminate()");
1134 //_______________________________________User defined functions_____________________________________________________________________________________
1135 void AliAnalysisTaskThreeJets::FillTopology(TH2F * Dalitz, TH1F * fhMu34, TH1F * fhMu45, TH1F * fhMu35, Double_t * x, TVector3 * pRest, Double_t xsection)
1138 // fill the topology histos
1140 Dalitz->Fill(x[0], x[1], xsection);
1141 fhMu35->Fill(TMath::Sqrt(x[0]*x[2]*(1-(pRest[0].Unit()).Dot(pRest[2].Unit()))/2), xsection);
1142 fhMu34->Fill(TMath::Sqrt(x[0]*x[1]*(1-(pRest[0].Unit()).Dot(pRest[1].Unit()))/2), xsection);
1143 fhMu45->Fill(TMath::Sqrt(x[1]*x[2]*(1-(pRest[1].Unit()).Dot(pRest[2].Unit()))/2), xsection);
1146 //_____________________________________________________________________________________________________________________________
1148 Bool_t AliAnalysisTaskThreeJets::IsPrimChar(TParticle* aParticle, Int_t aTotalPrimaries, Bool_t adebug)
1151 // this function checks if a particle from the event generator (i.e. among the nPrim particles in the stack)
1152 // shall be counted as a primary particle
1154 // This function or a equivalent should be available in some common place of AliRoot
1156 // WARNING: Call this function only for particles that are among the particles from the event generator!
1157 // --> stack->Particle(id) with id < stack->GetNprimary()
1159 // if the particle has a daughter primary, we do not want to count it
1160 if (aParticle->GetFirstDaughter() != -1 && aParticle->GetFirstDaughter() < aTotalPrimaries)
1163 printf("Dropping particle because it has a daughter among the primaries.\n");
1167 Int_t pdgCode = TMath::Abs(aParticle->GetPdgCode());
1170 // skip quarks and gluon
1171 if (pdgCode <= 10 || pdgCode == 21)
1174 printf("Dropping particle because it is a quark or gluon.\n");
1178 Int_t status = aParticle->GetStatusCode();
1179 // skip non final state particles..
1182 printf("Dropping particle because it is not a final state particle.\n");
1186 if (strcmp(aParticle->GetName(),"XXX") == 0)
1188 Printf("WARNING: There is a particle named XXX (pdg code %d).", pdgCode);
1192 TParticlePDG* pdgPart = aParticle->GetPDG();
1194 if (strcmp(pdgPart->ParticleClass(),"Unknown") == 0)
1196 Printf("WARNING: There is a particle with an unknown particle class (pdg code %d).", pdgCode);
1200 if (pdgPart->Charge() == 0)
1203 printf("Dropping particle because it is not charged.\n");
1210 //______________________________________________________________________________________________________
1213 //__________________________________________________________________________________________________________________________
1215 Double_t AliAnalysisTaskThreeJets::Exponent(Double_t x,const Double_t * const par) const
1217 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;
1220 Double_t AliAnalysisTaskThreeJets::Exponent2(Double_t x,const Double_t * const par) const
1222 return par[0]*TMath::Power(1/TMath::E(), TMath::Power(par[1]/x, par[2]))+par[3]*x;
1225 Double_t AliAnalysisTaskThreeJets::Gauss(Double_t x,const Double_t * const par) const
1227 return 1/(par[1])*TMath::Power(1/TMath::E(), 0.5*(x-par[0])*(x-par[0])/(par[1]*par[1]));
1230 Double_t AliAnalysisTaskThreeJets::Total(Double_t x,const Double_t * const par) const
1232 return Exponent(x, par)+Gauss(x, &par[4]);