8 #include <TLorentzVector.h>
9 #include <TClonesArray.h>
10 #include <TRefArray.h>
13 #include <TMatrixDSym.h>
14 #include <TMatrixDSymEigen.h>
17 #include "AliAnalysisTaskThreeJets.h"
18 #include "AliAnalysisManager.h"
19 #include "AliAODEvent.h"
20 #include "AliAODVertex.h"
21 #include "AliAODHandler.h"
22 #include "AliAODTrack.h"
23 #include "AliAODJet.h"
24 #include "AliGenPythiaEventHeader.h"
25 #include "AliMCEventHandler.h"
26 #include "AliMCEvent.h"
30 #include "AliAnalysisHelperJetTasks.h"
34 // Trhreee jet task by sona
38 ClassImp(AliAnalysisTaskThreeJets)
40 AliAnalysisTaskThreeJets::AliAnalysisTaskThreeJets() : AliAnalysisTaskSE(),
106 fhdPhiThrustGen(0x0),
107 fhdPhiThrustGenALL(0x0),
109 fhdPhiThrustRec(0x0),
110 fhdPhiThrustRecALL(0x0)
115 AliAnalysisTaskThreeJets::AliAnalysisTaskThreeJets(const char * name):
116 AliAnalysisTaskSE(name),
123 fUseAODInput(kFALSE),
182 fhdPhiThrustGen(0x0),
183 fhdPhiThrustGenALL(0x0),
185 fhdPhiThrustRec(0x0),
186 fhdPhiThrustRecALL(0x0)
188 DefineOutput(1, TList::Class());
193 Bool_t AliAnalysisTaskThreeJets::Notify()
196 // Implemented Notify() to read the cross sections
197 // and number of trials from pyxsec.root
199 TTree *tree = AliAnalysisManager::GetAnalysisManager()->GetTree();
202 TFile *curfile = tree->GetCurrentFile();
204 Error("Notify","No current file");
208 TString fileName(curfile->GetName());
209 if(fileName.Contains("AliESDs.root")){
210 fileName.ReplaceAll("AliESDs.root", "pyxsec.root");
212 else if(fileName.Contains("AliAOD.root")){
213 fileName.ReplaceAll("AliAOD.root", "pyxsec.root");
215 else if(fileName.Contains("galice.root")){
216 // for running with galice and kinematics alone...
217 fileName.ReplaceAll("galice.root", "pyxsec.root");
219 TFile *fxsec = TFile::Open(fileName.Data());
221 Printf("%s:%d %s not found in the Input",(char*)__FILE__,__LINE__,fileName.Data());
222 // no a severe condition
225 TTree *xtree = (TTree*)fxsec->Get("Xsection");
227 Printf("%s:%d tree not found in the pyxsec.root",(char*)__FILE__,__LINE__);
229 xtree->SetBranchAddress("xsection",&fXsection);
230 xtree->SetBranchAddress("ntrials",&ntrials);
238 //___________________________________________________________________________________________________________________________________
239 void AliAnalysisTaskThreeJets::UserCreateOutputObjects()
242 // Create the output container
244 Printf("Analysing event %s :: # %5d\n", gSystem->pwd(), (Int_t) fEntry);
247 fAOD = dynamic_cast<AliAODEvent*>(InputEvent());
249 Printf("%s:%d AODEvent not found in Input Manager %d",(char*)__FILE__,__LINE__,fUseAODInput);
254 // assume that the AOD is in the general output...
257 Printf("%s:%d AODEvent not found in the Output",(char*)__FILE__,__LINE__);
262 printf("AnalysisTaskJetSpectrum::UserCreateOutputObjects() \n");
266 fhX3X4Gen = new TH2F("X3vsX4Gen", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
267 fhX3X4Gen->SetXTitle("X_{3}");
268 fhX3X4Gen->SetYTitle("X_{4}");
270 fList->Add(fhX3X4Gen);
272 fhX3X4Rec = new TH2F("X3vsX4Rec", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
273 fhX3X4Rec->SetXTitle("X_{3}");
274 fhX3X4Rec->SetYTitle("X_{4}");
276 fList->Add(fhX3X4Rec);
278 fhMu35Rec = new TH1F("Mu35Rec", "", 20,0.1,0.8);
280 fhMu35Rec->SetXTitle("#mu_{35}");
281 fhMu35Rec->SetYTitle("#frac{dN}{d#mu_{35Rec}}");
282 fList->Add(fhMu35Rec);
284 fhMu34Rec = new TH1F("Mu34Rec", "", 20,0.5,1);
286 fhMu34Rec->SetXTitle("#mu_{34}");
287 fhMu34Rec->SetYTitle("#frac{dN}{d#mu_{34}}");
288 fList->Add(fhMu34Rec);
290 fhMu45Rec = new TH1F("Mu45Rec", "", 20,0,0.65);
292 fhMu45Rec->SetXTitle("#mu_{45}");
293 fhMu45Rec->SetYTitle("#frac{dN}{d#mu_{45}}");
294 fList->Add(fhMu45Rec);
296 fhMu35Gen = new TH1F("Mu35Gen", "", 20,0.1,0.8);
298 fhMu35Gen->SetXTitle("#mu_{35Gen}");
299 fhMu35Gen->SetYTitle("#frac{dN}{d#mu_{35Gen}}");
300 fList->Add(fhMu35Gen);
302 fhMu34Gen = new TH1F("Mu34Gen", "", 20,0.5,1);
304 fhMu34Gen->SetXTitle("#mu_{34Gen}");
305 fhMu34Gen->SetYTitle("#frac{dN}{d#mu_{34Gen}}");
306 fList->Add(fhMu34Gen);
308 fhMu45Gen = new TH1F("Mu45Gen", "", 20,0,0.65);
310 fhMu45Gen->SetXTitle("#mu_{45Gen}");
311 fhMu45Gen->SetYTitle("#frac{dN}{d#mu_{45}}");
312 fList->Add(fhMu45Gen);
314 fhInOut = new TH1I("InOut", "", 6, 0, 6);
315 fhInOut->SetXTitle("#RecJets_{GenJets=3}");
316 fhInOut->SetYTitle("#Entries");
319 fhThrustGen2 = new TH1F("ThrustGen2", "", 50, 0.5, 1);
320 fhThrustGen2->Sumw2();
321 fList->Add(fhThrustGen2);
323 fhThrustGen3 = new TH1F("ThrustGen3", "", 50, 0.5, 1);
324 fhThrustGen3->Sumw2();
325 fList->Add(fhThrustGen3);
327 fhThrustRec2 = new TH1F("ThrustRec2", "", 50, 0.5, 1);
328 fhThrustRec2->Sumw2();
329 fList->Add(fhThrustRec2);
331 fhThrustRec3 = new TH1F("ThrustRec3", "", 50, 0.5, 1);
332 fhThrustRec3->Sumw2();
333 fList->Add(fhThrustRec3);
335 fhCGen2 = new TH1F("CGen2", "", 100, 0, 1);
339 fhCGen3 = new TH1F("CGen3", "", 100, 0, 1);
343 fhCRec2 = new TH1F("CRec2", "", 100, 0, 1);
347 fhCRec3 = new TH1F("CRec3", "", 100, 0, 1);
351 fhSGen2 = new TH1F("SGen2", "", 100, 0, 1);
354 fhSGen3 = new TH1F("SGen3", "", 100, 0, 1);
357 fhSRec2 = new TH1F("SRec2", "", 100, 0, 1);
360 fhSRec3 = new TH1F("SRec3", "", 100, 0, 1);
363 fhAGen2 = new TH1F("AGen2", "", 50, 0, 0.5);
366 fhAGen3 = new TH1F("AGen3", "", 50, 0, 0.5);
369 fhARec2 = new TH1F("ARec2", "", 50, 0, 0.5);
372 fhARec3 = new TH1F("ARec3", "", 50, 0, 0.5);
375 fhX3 = new TH2F("X3", "", 22, 0.6, 1.02, 100, 0, 1);
376 fhX3->SetYTitle("|X_{3}^{MC} - X_{3}^{AOD}|/X_{3}^{MC}");
377 fhX3->SetXTitle("X_{3}");
381 fhX4 = new TH2F("X4", "",33, 0.4, 1.02, 100, 0, 1);
382 fhX4->SetYTitle("|X_{4}^{MC} - X_{4}^{AOD}|/X_{4}^{MC}");
383 fhX4->SetXTitle("X_{4}");
387 fhX5 = new TH2F("X5", "",100, 0., 1., 100, 0, 1);
388 fhX5->SetYTitle("|X_{5}^{MC} - X_{5}^{AOD}|/X_{5}^{MC}");
389 fhX5->SetXTitle("X_{5}");
393 fhXSec = new TProfile("XSec", "", 200, 0, 200, 0, 1);
396 fhX3X4Rec60 = new TH2F("X3vsX4Rec60", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
397 fhX3X4Rec60->SetXTitle("X_{3}");
398 fhX3X4Rec60->SetYTitle("X_{4}");
399 fhX3X4Rec60->Sumw2();
400 fList->Add(fhX3X4Rec60);
402 fhX3X4Rec60100 = new TH2F("X3vsX4Rec60100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
403 fhX3X4Rec60100->SetXTitle("X_{3}");
404 fhX3X4Rec60100->SetYTitle("X_{4}");
405 fhX3X4Rec60100->Sumw2();
406 fList->Add(fhX3X4Rec60100);
408 fhX3X4Rec100 = new TH2F("X3vsX4Rec100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
409 fhX3X4Rec100->SetXTitle("X_{3}");
410 fhX3X4Rec100->SetYTitle("X_{4}");
411 fhX3X4Rec100->Sumw2();
412 fList->Add(fhX3X4Rec100);
414 fhX3X4Gen60 = new TH2F("X3vsX4Gen60", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
415 fhX3X4Gen60->SetXTitle("X_{3}");
416 fhX3X4Gen60->SetYTitle("X_{4}");
417 fhX3X4Gen60->Sumw2();
418 fList->Add(fhX3X4Gen60);
420 fhX3X4Gen60100 = new TH2F("X3vsX4Gen60100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
421 fhX3X4Gen60100->SetXTitle("X_{3}");
422 fhX3X4Gen60100->SetYTitle("X_{4}");
423 fhX3X4Gen60100->Sumw2();
424 fList->Add(fhX3X4Gen60100);
426 fhX3X4Gen100 = new TH2F("X3vsX4Gen100", "", 22, 0.6, 1.02, 33, 0.4, 1.02);
427 fhX3X4Gen100->SetXTitle("X_{3}");
428 fhX3X4Gen100->SetYTitle("X_{4}");
429 fhX3X4Gen100->Sumw2();
430 fList->Add(fhX3X4Gen100);
432 fhdPhiThrustGen = new TH2F("dPhiThrustGen", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
433 fhdPhiThrustGen->Sumw2();
434 fList->Add(fhdPhiThrustGen);
436 fhdPhiThrustGenALL = new TH2F("dPhiThrustGenALL", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
437 fhdPhiThrustGenALL->Sumw2();
438 fList->Add(fhdPhiThrustGenALL);
440 fhdPhiThrustRec = new TH2F("dPhiThrustRec", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
441 fhdPhiThrustRec->Sumw2();
442 fList->Add(fhdPhiThrustRec);
444 fhdPhiThrustRecALL = new TH2F("dPhiThrustRecALL", "", 32, -1*TMath::Pi(), TMath::Pi(), 25, 0, 150);
445 fhdPhiThrustRecALL->Sumw2();
446 fList->Add(fhdPhiThrustRecALL);
448 Printf("UserCreateOutputObjects finished\n");
451 //__________________________________________________________________________________________________________________________________________
452 void AliAnalysisTaskThreeJets::Init()
454 printf("AliAnalysisJetCut::Init() \n");
457 //____________________________________________________________________________________________________________________________________________
458 void AliAnalysisTaskThreeJets::UserExec(Option_t * )
460 // if (fDebug > 1) printf("Analysing event # %5d\n", (Int_t) fEntry);
463 //create an AOD handler
464 AliAODHandler *aodH = dynamic_cast<AliAODHandler*>(AliAnalysisManager::GetAnalysisManager()->GetOutputEventHandler());
468 Printf("%s:%d no output aodHandler found Jet",(char*)__FILE__,__LINE__);
472 AliMCEvent* mcEvent =MCEvent();
474 Printf("%s:%d no mcEvent",(char*)__FILE__,__LINE__);
478 if (fDebug > 10)Printf("%s:%d",(char*)__FILE__,__LINE__);
481 AliAODVertex * pvtx = dynamic_cast<AliAODVertex*>(fAOD->GetPrimaryVertex());
484 AliAODJet genJetsPythia[kMaxJets];
485 Int_t nPythiaGenJets = 0;
487 AliAODJet genJets[kMaxJets];
490 AliAODJet recJets[kMaxJets];
493 //array of reconstructed jets from the AOD input
494 TClonesArray *aodRecJets = dynamic_cast<TClonesArray*>(fAOD->FindListObject(fBranchRec.Data()));
496 Printf("%s:%d no reconstructed Jet array with name %s in AOD",(char*)__FILE__,__LINE__,fBranchRec.Data());
500 // reconstructed jets
501 nRecJets = aodRecJets->GetEntries();
502 nRecJets = TMath::Min(nRecJets, kMaxJets);
504 for(int ir = 0;ir < nRecJets;++ir)
506 AliAODJet *tmp = dynamic_cast<AliAODJet*>(aodRecJets->At(ir));
511 // If we set a second branch for the input jets fetch this
512 TClonesArray * aodGenJets = dynamic_cast<TClonesArray*>(fAOD->FindListObject(fBranchGen.Data()));
516 printf("NO MC jets Found\n");
521 nGenJets = aodGenJets->GetEntries();
522 nGenJets = TMath::Min(nGenJets, kMaxJets);
524 for(Int_t ig =0 ; ig < nGenJets; ++ig)
526 AliAODJet * tmp = dynamic_cast<AliAODJet*>(aodGenJets->At(ig));
531 AliGenPythiaEventHeader* pythiaGenHeader = AliAnalysisHelperJetTasks::GetPythiaEventHeader(mcEvent);
532 if(!pythiaGenHeader){
533 Printf("!!!NO GEN HEADER AVALABLE!!!");
537 // Int_t ProcessType = pythiaGenHeader->ProcessType();
538 // if(ProcessType != 28) return;
539 fhXSec->Fill(pythiaGenHeader->GetPtHard(), fXsection);
540 nPythiaGenJets = pythiaGenHeader->NTriggerJets();
541 nPythiaGenJets = TMath::Min(nPythiaGenJets, kMaxJets);
543 Double_t eRec[kMaxJets];
544 Double_t eGen[kMaxJets];
546 Double_t eJetRec[kMaxJets];
547 // Double_t EJetGen[kMaxJets];
549 AliAODJet jetRec[kMaxJets];
550 AliAODJet jetGen[kMaxJets];
552 Int_t idxRec[kMaxJets];
553 Int_t idxGen[kMaxJets];
555 Double_t xRec[kMaxJets];
556 Double_t xGen[kMaxJets];
558 Double_t eSumRec = 0;
559 Double_t eSumGen = 0;
561 TLorentzVector vRec[kMaxJets];
562 TLorentzVector vRestRec[kMaxJets];
564 TLorentzVector vGen[kMaxJets];
565 TLorentzVector vRestGen[kMaxJets];
567 TLorentzVector vsumRec;
568 TLorentzVector vsumGen;
570 TVector3 pRec[kMaxJets];
571 TVector3 pGen[kMaxJets];
573 TVector3 pTrack[kTracks];
575 TVector3 pRestRec[kMaxJets];
576 TVector3 pRestGen[kMaxJets];
578 Double_t psumRestRec = 0;
579 // Double_t psumRestGen = 0;
580 //Pythia_________________________________________________________________________________________________________________
582 for(int ip = 0;ip < nPythiaGenJets;++ip)
584 if(ip>=kMaxJets)continue;
586 pythiaGenHeader->TriggerJet(ip,p);
587 genJetsPythia[ip].SetPxPyPzE(p[0],p[1],p[2],p[3]);
590 //_________________________________________________________________________________________________________________________
593 //________histos for MC___________________________________________________________________________________________________________
599 AliAODJet selJets[kMaxJets];
601 for(Int_t i = 0; i < nGenJets; i++)
605 selJets[nGenSel] = genJets[i];
612 for(Int_t j = 0; j < nGenJets; j++)
616 Double_t dRij = genJets[i].DeltaR(&genJets[j]);
618 if(dRij > 2*fR) tag++;
625 selJets[nGenSel] = genJets[i];
632 if(nGenSel == 0) return;
634 for (Int_t gj = 0; gj < nGenSel; gj++)
636 eGen[gj] = selJets[gj].E();
639 TMath::Sort(nGenSel, eGen, idxGen);
640 for (Int_t ig = 0; ig < nGenSel; ig++)
642 jetGen[ig] = selJets[idxGen[ig]];
644 AliStack * stack = mcEvent->Stack();
645 Int_t nMCtracks = stack->GetNprimary();
646 Double_t * eTracksMC = new Double_t[kTracks];
647 Double_t pTracksMC[kTracks];
648 Int_t * idxTracksMC = new Int_t[kTracks];
649 TLorentzVector jetTracksMC[kTracks];
650 TLorentzVector jetTracksSortMC[kTracks];
651 TVector3 pTrackMC[kTracks];
652 TLorentzVector vTrackMCAll[kTracks];
653 Double_t pTrackMCAll[kTracks];
654 TLorentzVector vTrackMC[kTracks];
655 TVector3 pTrackMCBoost[kTracks];
656 Double_t eventShapes[4];
659 Int_t nInJet[kMaxJets];
660 TLorentzVector inJetPartV[kMaxJets][kTracks];
661 Int_t nAllTracksMC = 0;
663 for(Int_t iTrack = 0; iTrack < nMCtracks; iTrack++)
665 TParticle * part = (TParticle*)stack->Particle(iTrack);
667 Double_t fEta = part->Eta();
668 if(TMath::Abs(fEta) > .9) continue;
669 if(!IsPrimChar(part, nMCtracks, 0)) continue;
670 vTrackMCAll[nAllTracksMC].SetPxPyPzE(part->Px(), part->Py(), part->Pz(), part->Energy());
671 pTrackMCAll[nAllTracksMC] = part->Pt();
674 if(nAllTracksMC == 0) return;
675 for(Int_t iJet = 0; iJet < nGenSel; iJet++)
677 Int_t nJetTracks = 0;
678 for(Int_t i = 0; i < nAllTracksMC; i++)
680 Double_t dPhi = (jetGen[iJet].Phi()-vTrackMCAll[i].Phi());
681 if(dPhi > TMath::Pi()) dPhi = dPhi - 2.*TMath::Pi();
682 if(dPhi < (-1.*TMath::Pi())) dPhi = dPhi + 2.*TMath::Pi();
683 Double_t dEta = (jetGen[iJet].Eta()-vTrackMCAll[i].Eta());
684 Double_t deltaR = TMath::Sqrt(dPhi*dPhi+dEta*dEta);
685 if(deltaR < fR && vTrackMCAll[i].Pt() > 1.5)
687 jetTracksMC[nAccTr] = vTrackMCAll[i];
688 eTracksMC[nAccTr] = vTrackMCAll[i].E();
689 pTracksMC[nAccTr] = vTrackMCAll[i].Pt();
690 inJetPartV[iJet][nJetTracks].SetPxPyPzE(vTrackMCAll[i].Px(), vTrackMCAll[i].Py(), vTrackMCAll[i].Pz(),vTrackMCAll[i].E());
695 nInJet[iJet] = nJetTracks;
698 if(nAccTr == 0) return;
699 Printf("*********** Number of Jets : %d ***************\n", nGenSel);
700 Double_t pTav[kMaxJets];
701 for(Int_t i = 0; i < nGenSel; i++)
704 Printf("*********** Number of particles in Jet %d = %d *******************\n", i+3, nInJet[i]);
705 for(Int_t iT = 0; iT < nInJet[i]; iT++)
707 Double_t pt = inJetPartV[i][iT].Pt();
710 pTav[i] = pTsum/nInJet[i];
713 TMath::Sort(nAccTr, pTracksMC, idxTracksMC);
714 for(Int_t i = 0; i < nAccTr; i++)
716 jetTracksSortMC[i] = jetTracksMC[idxTracksMC[i]];
717 pTrackMC[i].SetXYZ(jetTracksSortMC[i].Px(), jetTracksSortMC[i].Py(), jetTracksSortMC[i].Pz());
718 vTrackMC[i].SetPxPyPzE(jetTracksSortMC[i].Px(), jetTracksSortMC[i].Py(), jetTracksSortMC[i].Pz(), jetTracksSortMC[i].E());
721 TVector3 n01MC = pTrackMC[0].Unit();
722 //Thrust calculation, iterative method
727 GetEventShapes(n01MC, pTrackMC, nAccTr, eventShapes);
730 Double_t s = eventShapes[1];
731 Double_t a = eventShapes[2];
732 Double_t c = eventShapes[3];
751 Double_t thrust01MC = eventShapes[0];
756 fhThrustGen2->Fill(thrust01MC, fXsection);
759 fhThrustGen3->Fill(thrust01MC, fXsection);
766 for (Int_t i = 0; i < nGenSel; ++i)
768 vGen[i].SetPxPyPzE(jetGen[i].Px(), jetGen[i].Py(), jetGen[i].Pz(), jetGen[i].E());
769 pGen[i].SetXYZ(vGen[i].Px(), vGen[i].Py(), vGen[i].Pz());
772 if(eventShapes[0] >0.8 )
774 for(Int_t i = 0; i < nGenSel; i++)
775 fhdPhiThrustGen->Fill(n01MC.DeltaPhi(pGen[i]), jetGen[i].E());
778 if(eventShapes[0] <= 0.8)
780 for(Int_t i = 0; i < nGenSel; i++)
781 fhdPhiThrustGenALL->Fill(n01MC.DeltaPhi(pGen[i]), jetGen[i].E());
784 Double_t fPxGen = vsumGen.Px();
785 Double_t fPyGen = vsumGen.Py();
786 Double_t fPzGen = vsumGen.Pz();
787 Double_t fEGen = vsumGen.E();
789 Double_t eRestGen[kMaxJets];
790 for (Int_t j = 0; j < nGenSel; j++)
792 vGen[j].Boost(-fPxGen/fEGen, -fPyGen/fEGen, -fPzGen/fEGen);
793 eRestGen[j] = vGen[j].E();
796 for (Int_t j = 0; j < nAccTr; j++)
798 vTrackMC[j].Boost(-fPxGen/fEGen, -fPyGen/fEGen, -fPzGen/fEGen);
799 pTrackMCBoost[j].SetXYZ(vTrackMC[j].Px(),vTrackMC[j].Py(),vTrackMC[j].Pz());
802 Int_t idxRestGen[kMaxJets];
803 TMath::Sort(nGenSel, eRestGen, idxRestGen);
804 for(Int_t j = 0; j < nGenSel; j++)
806 vRestGen[j] = vGen[idxRestGen[j]];
807 eSumGen += vRestGen[j].E();
812 // if(nInJet[0] < 3 || nInJet[1] < 3 || nInJet[2] < 3) return;
813 // if(pRestGen[1].DeltaPhi(pRestGen[2]) > 0.95 && pRestGen[1].DeltaPhi(pRestGen[2]) < 1.15)
816 for(Int_t i = 0; i < nGenSel; i++)
818 xGen[i] = 2*vRestGen[i].E()/eSumGen;
821 Printf("***************** Values of Dalitz variables are : %f, %f, %f ****************\n", xGen[0], xGen[1], xGen[2]);
823 Printf("***************** fXSection = %f ******************\n", fXsection);
825 fhX3X4Gen60->Fill(xGen[0], xGen[1], fXsection);
827 if(eSumGen > 60 && eSumGen <= 100)
828 fhX3X4Gen60100->Fill(xGen[0], xGen[1], fXsection);
831 fhX3X4Gen100->Fill(xGen[0], xGen[1], fXsection);
833 FillTopology(fhX3X4Gen, fhMu34Gen, fhMu45Gen, fhMu35Gen, xGen, pRestGen, fXsection);
838 //_______________________________________________histos for MC_____________________________________________________
841 //_______________________________________________histos AOD________________________________________________________
843 // Printf("Event Number : %d, Number of gen jets : %d ", fEntry, nGenJets);
849 AliAODJet recSelJets[kMaxJets];
851 for(Int_t i = 0; i < nRecJets; i++)
855 recSelJets[nRecSel] = recJets[i];
862 for(Int_t j = 0; j < nRecJets; j++)
866 Double_t dRij = recJets[i].DeltaR(&recJets[j]);
868 if(dRij > 2*fR) tag1++;
873 if(tag1/counter1 == 1)
875 recSelJets[nRecSel] = recJets[i];
882 if(nRecSel == 0) return;
884 //sort rec/gen jets by energy in C.M.S
885 for (Int_t rj = 0; rj < nRecSel; rj++)
887 eRec[rj] = recSelJets[rj].E();
890 // Int_t nAODtracks = fAOD->GetNumberOfTracks();
891 Int_t nTracks = 0; //tracks accepted in the whole event
892 // Int_t nTracksALL = 0;
893 TLorentzVector jetTracks[kTracks];
894 TLorentzVector jetTracksSort[kTracks];
895 Double_t * eTracks = new Double_t[kTracks];
896 Double_t pTracks[kTracks];
897 Int_t * idxTracks = new Int_t[kTracks];
898 Double_t eventShapesRec[4];
899 Int_t jetMult[kMaxJets];
900 // TLorentzVector vTracksAll[kTracks];
901 // Double_t pTracksAll[kTracks];
903 AliAODJet jetRecAcc[kMaxJets];
904 Int_t nJetTracks = 0;
906 AliAODTrack jetTrack[kTracks];
907 Double_t * cv = new Double_t[21];
908 TMath::Sort(nRecSel, eRec, idxRec);
909 for (Int_t rj = 0; rj < nRecSel; rj++)
912 eJetRec[rj] = eRec[idxRec[rj]];
913 jetRec[rj] = recSelJets[idxRec[rj]];
914 TRefArray * jetTracksAOD = dynamic_cast<TRefArray*>(jetRec[rj].GetRefTracks());
915 if(!jetTracksAOD) continue;
916 if(jetTracksAOD->GetEntries() < 3) continue;
917 for(Int_t i = 0; i < jetTracksAOD->GetEntries(); i++)
919 AliAODTrack * track = (AliAODTrack*)jetTracksAOD->At(i);
920 track->GetCovarianceXYZPxPyPz(cv);
921 if(cv[14] > 1000.) continue;
922 jetTrack[nTracks] = *track;
923 jetTracks[nTracks].SetPxPyPzE(jetTrack[nTracks].Px(), jetTrack[nTracks].Py(), jetTrack[nTracks].Pz(), jetTrack[nTracks].E());
924 eTracks[nTracks] = jetTracks[nTracks].E();
925 pTracks[nTracks] = jetTracks[nTracks].Pt();
929 if(nJetTracks < 3) continue;
930 jetRecAcc[nAccJets] = jetRec[rj];
931 jetMult[nAccJets] = jetTracksAOD->GetEntries();
935 if (nAccJets == 0) return;
937 TLorentzVector vTrack[kTracks];
938 TMath::Sort(nTracks, pTracks, idxTracks);
939 for(Int_t i = 0; i < nTracks; i++)
941 jetTracksSort[i] = jetTracks[idxTracks[i]];
942 pTrack[i].SetXYZ(jetTracksSort[i].Px(), jetTracksSort[i].Py(), jetTracksSort[i].Pz());
943 vTrack[i].SetPxPyPzE(jetTracksSort[i].Px(), jetTracksSort[i].Py(), jetTracksSort[i].Pz(), jetTracksSort[i].E());
946 for (Int_t i = 0; i < nAccJets; ++i)
948 vRec[i].SetPxPyPzE(jetRecAcc[i].Px(), jetRecAcc[i].Py(), jetRecAcc[i].Pz(), jetRecAcc[i].E());
949 pRec[i].SetXYZ(vRec[i].Px(), vRec[i].Py(), vRec[i].Pz());
953 //Thrust, iterative method, AODs
954 TVector3 n01 = pTrack[0].Unit();
959 GetEventShapes(n01, pTrack, nTracks, eventShapesRec);
962 // Double_t Max3 = TMath::Max(eventShapesRec0[0],eventShapesRec1[0]);
963 // Double_t Max4 = TMath::Max(eventShapesRec3[0],eventShapesRec2[0]);
965 Double_t thrust = eventShapesRec[0];
967 if(eventShapesRec[0] > 0.8)
969 for(Int_t i = 0; i < nAccJets; i++)
970 fhdPhiThrustRec->Fill(n01.DeltaPhi(pRec[i]), jetRecAcc[i].E());
974 if(eventShapesRec[0] <= 0.8)
976 for(Int_t i = 0; i < nAccJets; i++)
977 fhdPhiThrustRecALL->Fill(n01.DeltaPhi(pRec[i]), jetRecAcc[i].E());
983 fhThrustRec2->Fill(thrust, fXsection);
986 fhThrustRec3->Fill(thrust, fXsection);
994 fhARec2->Fill(eventShapesRec[2], fXsection);
995 fhSRec2->Fill(eventShapesRec[1], fXsection);
996 fhCRec2->Fill(eventShapesRec[3], fXsection);
1001 fhARec3->Fill(eventShapesRec[2], fXsection);
1002 fhSRec3->Fill(eventShapesRec[1], fXsection);
1003 fhCRec3->Fill(eventShapesRec[3], fXsection);
1010 //rest frame for reconstructed jets
1011 Double_t fPx = vsumRec.Px();
1012 Double_t fPy = vsumRec.Py();
1013 Double_t fPz = vsumRec.Pz();
1014 Double_t fE = vsumRec.E();
1016 TVector3 pTrackRest[kTracks];
1017 for(Int_t j = 0; j < nTracks; j++)
1019 vTrack[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1020 pTrackRest[j].SetXYZ(vTrack[j].Px(), vTrack[j].Py(),vTrack[j].Pz());
1023 Double_t eRestRec[kMaxJets];
1024 Int_t idxRestRec[kMaxJets];
1025 for (Int_t j = 0; j < nAccJets; j++)
1027 vRec[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1028 eRestRec[j] = vRec[j].E();
1029 eSumRec += vRec[j].E();
1032 TMath::Sort(nAccJets, eRestRec, idxRestRec);
1033 for (Int_t i = 0; i < nAccJets; i++)
1035 vRestRec[i] = vRec[idxRestRec[i]];
1036 pRestRec[i].SetXYZ(vRestRec[i].Px(), vRestRec[i].Py(), vRestRec[i].Pz());
1037 psumRestRec += pRestRec[i].Perp();
1042 // if(pRest[1].DeltaPhi(pRest[2]) > 0.95 && pRest[1].DeltaPhi(pRest[2]) < 1.15)
1044 fhInOut->Fill(nGenSel);
1045 // for(Int_t j = 0; j < nTracksALL; j++)
1047 // vTracksAll[j].Boost(-fPx/fE, -fPy/fE, -fPz/fE);
1048 // pTracksAll[j].SetXYZ(vTracksAll[j].Px(), vTracksAll[j].Py(),vTracksAll[j].Pz());
1049 // fhdPhiRec->Fill(pRest[0].DeltaPhi(pTracksAll[j]), pTracksAll[j].Perp(), fXsection);
1051 //and the Dalitz variables and Energy distributions in the rest frame
1052 for (Int_t i = 0; i < nAccJets; i++)
1053 xRec[i] = 2*vRestRec[i].E()/eSumRec;
1056 fhX3X4Rec60->Fill(xRec[0], xRec[1], fXsection);
1058 if(eSumRec > 60 && eSumRec <= 100)
1059 fhX3X4Rec60100->Fill(xRec[0], xRec[1], fXsection);
1062 fhX3X4Rec100->Fill(xRec[0], xRec[1], fXsection);
1064 if(nAccJets == 3 && nAccJets == nGenJets)
1066 fhX3->Fill(xGen[0], TMath::Abs(xGen[0]-xRec[0])/xGen[0], fXsection);
1067 fhX4->Fill(xGen[1], TMath::Abs(xGen[1]-xRec[1])/xGen[1], fXsection);
1068 fhX5->Fill(xGen[2], TMath::Abs(xGen[2]-xRec[2])/xGen[2], fXsection);
1071 FillTopology(fhX3X4Rec, fhMu34Rec, fhMu45Rec, fhMu35Rec, xRec, pRestRec, fXsection);
1073 Printf("%s:%d",(char*)__FILE__,__LINE__);
1077 Printf("%s:%d Data Posted",(char*)__FILE__,__LINE__);
1081 //__________________________________________________________________________________________________________________________________________________
1082 void AliAnalysisTaskThreeJets::Terminate(Option_t *)
1084 printf("AnalysisJetCorrelation::Terminate()");
1088 //_______________________________________User defined functions_____________________________________________________________________________________
1089 void AliAnalysisTaskThreeJets::FillTopology(TH2F * Dalitz, TH1F * fhMu34, TH1F * fhMu45, TH1F * fhMu35, Double_t * x, TVector3 * pRest, Double_t xsection)
1092 // fill the topology histos
1094 Dalitz->Fill(x[0], x[1], xsection);
1095 fhMu35->Fill(TMath::Sqrt(x[0]*x[2]*(1-(pRest[0].Unit()).Dot(pRest[2].Unit()))/2), xsection);
1096 fhMu34->Fill(TMath::Sqrt(x[0]*x[1]*(1-(pRest[0].Unit()).Dot(pRest[1].Unit()))/2), xsection);
1097 fhMu45->Fill(TMath::Sqrt(x[1]*x[2]*(1-(pRest[1].Unit()).Dot(pRest[2].Unit()))/2), xsection);
1100 //_____________________________________________________________________________________________________________________________
1102 Bool_t AliAnalysisTaskThreeJets::IsPrimChar(TParticle* aParticle, Int_t aTotalPrimaries, Bool_t adebug)
1105 // this function checks if a particle from the event generator (i.e. among the nPrim particles in the stack)
1106 // shall be counted as a primary particle
1108 // This function or a equivalent should be available in some common place of AliRoot
1110 // WARNING: Call this function only for particles that are among the particles from the event generator!
1111 // --> stack->Particle(id) with id < stack->GetNprimary()
1113 // if the particle has a daughter primary, we do not want to count it
1114 if (aParticle->GetFirstDaughter() != -1 && aParticle->GetFirstDaughter() < aTotalPrimaries)
1117 printf("Dropping particle because it has a daughter among the primaries.\n");
1121 Int_t pdgCode = TMath::Abs(aParticle->GetPdgCode());
1124 // skip quarks and gluon
1125 if (pdgCode <= 10 || pdgCode == 21)
1128 printf("Dropping particle because it is a quark or gluon.\n");
1132 Int_t status = aParticle->GetStatusCode();
1133 // skip non final state particles..
1136 printf("Dropping particle because it is not a final state particle.\n");
1140 if (strcmp(aParticle->GetName(),"XXX") == 0)
1142 Printf("WARNING: There is a particle named XXX (pdg code %d).", pdgCode);
1146 TParticlePDG* pdgPart = aParticle->GetPDG();
1148 if (strcmp(pdgPart->ParticleClass(),"Unknown") == 0)
1150 Printf("WARNING: There is a particle with an unknown particle class (pdg code %d).", pdgCode);
1154 if (pdgPart->Charge() == 0)
1157 printf("Dropping particle because it is not charged.\n");
1164 //______________________________________________________________________________________________________
1166 void AliAnalysisTaskThreeJets::GetThrustAxis(TVector3 &n01, TVector3 * pTrack, const Int_t &nTracks)
1169 // fetch the thrust axis
1174 Double_t thrust[kTracks];
1177 for(Int_t j = 0; j < nTracks; j++)
1179 psum.SetXYZ(0., 0., 0.);
1182 for(Int_t i = 0; i < nTracks; i++)
1184 psum1 += (TMath::Abs(n01.Dot(pTrack[i])));
1185 psum2 += pTrack[i].Mag();
1187 if (n01.Dot(pTrack[i]) > 0) psum += pTrack[i];
1188 if (n01.Dot(pTrack[i]) < 0) psum -= pTrack[i];
1191 thrust[j] = psum1/psum2;
1202 //___________________________________________________________________________________________________________
1204 void AliAnalysisTaskThreeJets::GetEventShapes(TVector3 &n01, TVector3 * pTrack, Int_t nTracks, Double_t * eventShapes)
1207 // get the event shape
1212 Double_t thrust[kTracks];
1215 //Sphericity calculation
1233 for(Int_t j = 0; j < nTracks; j++)
1235 psum.SetXYZ(0., 0., 0.);
1238 for(Int_t i = 0; i < nTracks; i++)
1240 psum1 += (TMath::Abs(n01.Dot(pTrack[i])));
1241 psum2 += pTrack[i].Mag();
1243 if (n01.Dot(pTrack[i]) > 0) psum += pTrack[i];
1244 if (n01.Dot(pTrack[i]) < 0) psum -= pTrack[i];
1247 thrust[j] = psum1/psum2;
1256 eventShapes[0] = th;
1258 for(Int_t j = 0; j < nTracks; j++)
1260 s00 = s00 + (pTrack[j].Px()*pTrack[j].Px())/pTrack[j].Mag();
1261 s01 = s01 + (pTrack[j].Px()*pTrack[j].Py())/pTrack[j].Mag();
1262 s02 = s02 + (pTrack[j].Px()*pTrack[j].Pz())/pTrack[j].Mag();
1264 s10 = s10 + (pTrack[j].Py()*pTrack[j].Px())/pTrack[j].Mag();
1265 s11 = s11 + (pTrack[j].Py()*pTrack[j].Py())/pTrack[j].Mag();
1266 s12 = s12 + (pTrack[j].Py()*pTrack[j].Pz())/pTrack[j].Mag();
1268 s20 = s20 + (pTrack[j].Pz()*pTrack[j].Px())/pTrack[j].Mag();
1269 s21 = s21 + (pTrack[j].Pz()*pTrack[j].Py())/pTrack[j].Mag();
1270 s22 = s22 + (pTrack[j].Pz()*pTrack[j].Pz())/pTrack[j].Mag();
1272 ptot += pTrack[j].Mag();
1289 TMatrixDSymEigen eigen(m);
1290 TVectorD eigenVal = eigen.GetEigenValues();
1292 Double_t sphericity = (3/2)*(eigenVal(2)+eigenVal(1));
1293 eventShapes[1] = sphericity;
1295 Double_t aplaarity = (3/2)*(eigenVal(2));
1296 eventShapes[2] = aplaarity;
1298 c = 3*(eigenVal(0)*eigenVal(1)+eigenVal(0)*eigenVal(2)+eigenVal(1)*eigenVal(2));
1303 //__________________________________________________________________________________________________________________________
1305 Double_t AliAnalysisTaskThreeJets::Exponent(Double_t x,const Double_t * const par) const
1307 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;
1310 Double_t AliAnalysisTaskThreeJets::Exponent2(Double_t x,const Double_t * const par) const
1312 return par[0]*TMath::Power(1/TMath::E(), TMath::Power(par[1]/x, par[2]))+par[3]*x;
1315 Double_t AliAnalysisTaskThreeJets::Gauss(Double_t x,const Double_t * const par) const
1317 return 1/(par[1])*TMath::Power(1/TMath::E(), 0.5*(x-par[0])*(x-par[0])/(par[1]*par[1]));
1320 Double_t AliAnalysisTaskThreeJets::Total(Double_t x,const Double_t * const par) const
1322 return Exponent(x, par)+Gauss(x, &par[4]);