2 // Jet QG tagging analysis task.
4 // Author: D. Caffarri, L. Cunqueiro
6 #include <TClonesArray.h>
10 #include <THnSparse.h>
13 #include <TLorentzVector.h>
20 #include "TMatrixDSym.h"
21 #include "TMatrixDSymEigen.h"
25 #include "AliVCluster.h"
26 #include "AliVTrack.h"
27 #include "AliEmcalJet.h"
28 #include "AliRhoParameter.h"
30 #include "AliEmcalParticle.h"
31 #include "AliMCEvent.h"
32 #include "AliGenPythiaEventHeader.h"
33 #include "AliAODMCHeader.h"
34 #include "AliMCEvent.h"
35 #include "AliAnalysisManager.h"
36 #include "AliJetContainer.h"
37 #include "AliParticleContainer.h"
38 #include "AliPythiaInfo.h"
41 #include "AliAODEvent.h"
43 #include "AliAnalysisTaskEmcalQGTagging.h"
48 ClassImp(AliAnalysisTaskEmcalQGTagging)
50 //________________________________________________________________________
51 AliAnalysisTaskEmcalQGTagging::AliAnalysisTaskEmcalQGTagging() :
52 AliAnalysisTaskEmcalJet("AliAnalysisTaskEmcalQGTagging", kTRUE),
54 fMinFractionShared(0),
66 fTreeObservableTagging(0)
69 SetMakeGeneralHistograms(kTRUE);
72 //________________________________________________________________________
73 AliAnalysisTaskEmcalQGTagging::AliAnalysisTaskEmcalQGTagging(const char *name) :
74 AliAnalysisTaskEmcalJet(name, kTRUE),
76 fMinFractionShared(0),
88 fTreeObservableTagging(0)
91 // Standard constructor.
93 SetMakeGeneralHistograms(kTRUE);
95 DefineOutput(1, TTree::Class());
99 //________________________________________________________________________
100 AliAnalysisTaskEmcalQGTagging::~AliAnalysisTaskEmcalQGTagging()
105 //________________________________________________________________________
106 void AliAnalysisTaskEmcalQGTagging::UserCreateOutputObjects()
108 // Create user output.
110 AliAnalysisTaskEmcalJet::UserCreateOutputObjects();
112 Bool_t oldStatus = TH1::AddDirectoryStatus();
113 TH1::AddDirectory(kFALSE);
115 fTreeObservableTagging = new TTree("fTreeJetShape", "fTreeJetShape");
117 fShapesVar = new Float_t [nVar];
118 TString *fShapesVarNames = new TString [nVar];
120 fShapesVarNames[0] = "partonCode";
121 fShapesVarNames[1] = "ptJet";
122 fShapesVarNames[2] = "ptDJet";
123 fShapesVarNames[3] = "mJet";
124 fShapesVarNames[4] = "nbOfConst";
125 fShapesVarNames[5] = "angularity";
126 fShapesVarNames[6] = "circularity";
127 fShapesVarNames[7] = "lesub";
128 fShapesVarNames[8] = "sigma2";
130 fShapesVarNames[9] = "ptJetMatch";
131 fShapesVarNames[10] = "ptDJetMatch";
132 fShapesVarNames[11] = "mJetMatch";
133 fShapesVarNames[12] = "nbOfConstMatch";
134 fShapesVarNames[13] = "angularityMatch";
135 fShapesVarNames[14] = "circularityMatch";
136 fShapesVarNames[15] = "lesubMatch";
137 fShapesVarNames[16] = "sigma2Match";
139 for(Int_t ivar=0; ivar < nVar; ivar++){
140 cout<<"looping over variables"<<endl;
141 fTreeObservableTagging->Branch(fShapesVarNames[ivar].Data(), &fShapesVar[ivar], Form("%s/F", fShapesVarNames[ivar].Data()));
143 //if( ivar == 4 ) fTreeObservableTagging->Branch(fShapesVarNames[ivar].Data(), &fShapesVar[ivar], Form("%s/I", fShapesVarNames[ivar].Data()));
147 fPhiJetCorr6= new TH2F("fPhiJetCorr6", "fPhiJetCorr6", 50, 0, 2*TMath::Pi(), 50, 0, 2*TMath::Pi());
148 fOutput->Add(fPhiJetCorr6);
149 fEtaJetCorr6= new TH2F("fEtaJetCorr6", "fEtaJetCorr6", 50, -1.5, 1.5, 50, -1.5, 1.5);
150 fOutput->Add(fEtaJetCorr6);
152 fPhiJetCorr7= new TH2F("fPhiJetCorr7", "fPhiJetCorr7", 50, 0, 2*TMath::Pi(), 50, 0, 2*TMath::Pi());
153 fOutput->Add(fPhiJetCorr7);
154 fEtaJetCorr7= new TH2F("fEtaJetCorr7", "fEtaJetCorr7", 50, -1.5, 1.5, 50, -1.5, 1.5);
155 fOutput->Add(fEtaJetCorr7);
157 fPtJetCorr= new TH2F("fPtJetCorr", "fPtJetCorr", 100, 0, 200, 100, 0, 200);
158 fOutput->Add(fPtJetCorr);
159 fPtJet= new TH1F("fPtJet", "fPtJet", 100, 0, 200);
160 fOutput->Add(fPtJet);
163 fOutput->Add(fTreeObservableTagging);
164 TH1::AddDirectory(oldStatus);
165 PostData(1, fOutput); // Post data for ALL output slots > 0 here.
169 //________________________________________________________________________
170 Bool_t AliAnalysisTaskEmcalQGTagging::Run()
172 // Run analysis code here, if needed. It will be executed before FillHistograms().
177 //________________________________________________________________________
178 Bool_t AliAnalysisTaskEmcalQGTagging::FillHistograms()
181 //cout<<"base container"<<endl;
182 AliEmcalJet* jet1 = NULL;
183 AliJetContainer *jetCont = GetJetContainer(0);
186 jetCont->ResetCurrentID();
187 while((jet1 = jetCont->GetNextAcceptJet())) {
189 AliEmcalJet* jet2 = 0x0;
190 fPtJet->Fill(jet1->Pt());
192 if (!(fJetShapeType == kData)) {
193 AliPythiaInfo *partonsInfo = 0x0;
194 if((fJetShapeType == kTrueDet) || (fJetShapeType == kDetEmb)){
195 AliJetContainer *jetContTrue = GetJetContainer(1);
196 jet2 = jet1->ClosestJet();
198 Printf("jet2 not exists, returning");
202 Double_t fraction = jetCont->GetFractionSharedPt(jet1);
203 cout<<"hey a jet"<<fraction<<" "<<jet1->Pt()<<" "<<jet2->Pt()<<endl;
204 if(fraction<fMinFractionShared) continue;
205 partonsInfo = (AliPythiaInfo*) jetContTrue->GetPythiaInfo();
206 if(!partonsInfo) return 0;
210 partonsInfo = (AliPythiaInfo*) jetCont->GetPythiaInfo();
212 if(!partonsInfo) return 0;
215 Double_t jp1=(jet2->Phi())-(partonsInfo->GetPartonPhi6());
216 Double_t detap1=(jet2->Eta())-(partonsInfo->GetPartonEta6());
217 kWeight=partonsInfo->GetPythiaEventWeight();
218 if (jp1< -1*TMath::Pi()) jp1 = (-2*TMath::Pi())-jp1;
219 else if (jp1 > TMath::Pi()) jp1 = (2*TMath::Pi())-jp1;
220 Float_t dRp1 = TMath::Sqrt(jp1 * jp1 + detap1 * detap1);
221 fEtaJetCorr6->Fill(jet2->Eta(), partonsInfo->GetPartonEta6());
222 fPhiJetCorr6->Fill(jet2->Phi(), partonsInfo->GetPartonPhi6());
223 if(dRp1 < fRMatching) {
224 fShapesVar[0] = partonsInfo->GetPartonFlag6();
225 fPtJetCorr ->Fill(partonsInfo->GetPartonPt6(), jet2->Pt());
228 jp1=(jet2->Phi())-(partonsInfo->GetPartonPhi7());
229 detap1=(jet2->Eta())-(partonsInfo->GetPartonEta7());
230 if (jp1< -1*TMath::Pi()) jp1= (-2*TMath::Pi())-jp1;
231 else if (jp1 > TMath::Pi()) jp1 = (2*TMath::Pi())-jp1;
232 dRp1 = TMath::Sqrt(jp1 * jp1 + detap1 * detap1);
233 fEtaJetCorr7->Fill(jet2->Eta(), partonsInfo->GetPartonEta7());
234 fPhiJetCorr7->Fill(jet2->Phi(), partonsInfo->GetPartonPhi7());
235 if(dRp1 < fRMatching) {
236 fShapesVar[0] = partonsInfo->GetPartonFlag7();
237 fPtJetCorr ->Fill(partonsInfo->GetPartonPt7(), jet2->Pt());
245 Double_t ptSubtracted = 0;
247 if (((fJetShapeType == kData) || (fJetShapeType == kDetEmb)) && (fJetShapeSub == kConstSub))
248 ptSubtracted = jet1->Pt();
249 else ptSubtracted = jet1->Pt() - GetRhoVal(0)*jet1->Area();
251 if ((fJetShapeType == kData || fJetShapeType== kDetEmb))
252 if ( ptSubtracted < fPtThreshold) continue;
254 fShapesVar[1] = ptSubtracted;
255 fShapesVar[2] = GetJetpTD(jet1,0);
256 fShapesVar[3] = GetJetMass(jet1,0);
257 fShapesVar[4] = 1.*GetJetNumberOfConstituents(jet1,0);
258 fShapesVar[5] = GetJetAngularity(jet1,0);
259 fShapesVar[6] = GetJetCircularity(jet1,0);
260 fShapesVar[7] = GetJetLeSub(jet1,0);
261 fShapesVar[8] = GetSigma2(jet1,0);
263 Float_t ptMatch=0., ptDMatch=0., massMatch=0., constMatch=0.,angulMatch=0.,circMatch=0., lesubMatch=0., sigma2Match=0.;
265 if (fJetShapeType == kTrueDet || fJetShapeType == kDetEmb) {
268 ptDMatch=GetJetpTD(jet2, kMatched);
269 massMatch=GetJetMass(jet2,kMatched);
270 constMatch=1.*GetJetNumberOfConstituents(jet2,kMatched);
271 angulMatch=GetJetAngularity(jet2, kMatched);
272 circMatch=GetJetCircularity(jet2, kMatched);
273 lesubMatch=GetJetLeSub(jet2, kMatched);
274 sigma2Match = GetSigma2(jet2, kMatched);
277 if (fJetShapeType == kTrue || fJetShapeType == kData) {
289 fShapesVar[9] = ptMatch;
290 fShapesVar[10] = ptDMatch;
291 fShapesVar[11] = massMatch;
292 fShapesVar[12] = constMatch;
293 fShapesVar[13] = angulMatch;
294 fShapesVar[14] = circMatch;
295 fShapesVar[15] = lesubMatch;
296 fShapesVar[16] = sigma2Match;
298 fTreeObservableTagging->Fill();
299 fTreeObservableTagging->SetWeight(kWeight);
307 //________________________________________________________________________
308 Float_t AliAnalysisTaskEmcalQGTagging::GetJetMass(AliEmcalJet *jet,Int_t jetContNb=0) {
309 //calc subtracted jet mass
310 if((fJetShapeSub==kDerivSub)&&(jetContNb==0))
311 return jet->GetSecondOrderSubtracted();
316 //________________________________________________________________________
317 Float_t AliAnalysisTaskEmcalQGTagging::Angularity(AliEmcalJet *jet, Int_t jetContNb = 0){
319 AliJetContainer *jetCont = GetJetContainer(jetContNb);
320 if (!jet->GetNumberOfTracks())
324 AliVParticle *vp1 = 0x0;
325 for(UInt_t i = 0; i < jet->GetNumberOfTracks(); i++) {
326 vp1 = static_cast<AliVParticle*>(jet->TrackAt(i, jetCont->GetParticleContainer()->GetArray()));
327 Double_t dphi = vp1->Phi()-jet->Phi();
328 if(dphi<-1.*TMath::Pi()) dphi+=TMath::TwoPi();
329 if(dphi>TMath::Pi()) dphi-=TMath::TwoPi();
330 Double_t dr2 = (vp1->Eta()-jet->Eta())*(vp1->Eta()-jet->Eta()) + dphi*dphi;
331 Double_t dr = TMath::Sqrt(dr2);
332 num=num+vp1->Pt()*dr;
338 //________________________________________________________________________
339 Float_t AliAnalysisTaskEmcalQGTagging::GetJetAngularity(AliEmcalJet *jet, Int_t jetContNb = 0) {
341 if((fJetShapeSub==kDerivSub) && (jetContNb==0))
342 return jet->GetSecondOrderSubtractedAngularity();
344 return Angularity(jet, jetContNb);
349 //________________________________________________________________________
350 Float_t AliAnalysisTaskEmcalQGTagging::PTD(AliEmcalJet *jet, Int_t jetContNb = 0){
352 AliJetContainer *jetCont = GetJetContainer(jetContNb);
353 if (!jet->GetNumberOfTracks())
357 AliVParticle *vp1 = 0x0;
358 for(UInt_t i = 0; i < jet->GetNumberOfTracks(); i++) {
359 vp1 = static_cast<AliVParticle*>(jet->TrackAt(i, jetCont->GetParticleContainer()->GetArray()));
360 num=num+vp1->Pt()*vp1->Pt();
363 return TMath::Sqrt(num)/den;
366 //________________________________________________________________________
367 Float_t AliAnalysisTaskEmcalQGTagging::GetJetpTD(AliEmcalJet *jet, Int_t jetContNb = 0) {
368 //calc subtracted jet mass
369 if((fJetShapeSub==kDerivSub)&&(jetContNb==0))
370 return jet->GetSecondOrderSubtractedpTD();
372 return PTD(jet, jetContNb);
376 //_____________________________________________________________________________
377 Float_t AliAnalysisTaskEmcalQGTagging::Circularity(AliEmcalJet *jet, Int_t jetContNb = 0){
379 AliJetContainer *jetCont = GetJetContainer(jetContNb);
380 if (!jet->GetNumberOfTracks())
387 Double_t pxjet=jet->Px();
388 Double_t pyjet=jet->Py();
389 Double_t pzjet=jet->Pz();
392 //2 general normalized vectors perpendicular to the jet
393 TVector3 ppJ1(pxjet, pyjet, pzjet);
394 TVector3 ppJ3(- pxjet* pzjet, - pyjet * pzjet, pxjet * pxjet + pyjet * pyjet);
396 TVector3 ppJ2(-pyjet, pxjet, 0);
398 AliVParticle *vp1 = 0x0;
399 for(UInt_t i = 0; i < jet->GetNumberOfTracks(); i++) {
400 vp1 = static_cast<AliVParticle*>(jet->TrackAt(i, jetCont->GetParticleContainer()->GetArray()));
403 TVector3 pp(vp1->Px(), vp1->Py(), vp1->Pz());
406 TVector3 pLong = pp.Dot(ppJ1) / ppJ1.Mag2() * ppJ1;
407 TVector3 pPerp = pp - pLong;
408 //projection onto the two perpendicular vectors defined above
410 Float_t ppjX = pPerp.Dot(ppJ2);
411 Float_t ppjY = pPerp.Dot(ppJ3);
412 Float_t ppjT = TMath::Sqrt(ppjX * ppjX + ppjY * ppjY);
413 if(ppjT<=0) return 0;
415 mxx += (ppjX * ppjX / ppjT);
416 myy += (ppjY * ppjY / ppjT);
417 mxy += (ppjX * ppjY / ppjT);
422 if(sump2==0) return 0;
424 Double_t ele[4] = {mxx / sump2, mxy / sump2, mxy / sump2, myy / sump2};
425 TMatrixDSym m0(2,ele);
428 TMatrixDSymEigen m(m0);
430 TMatrixD evecm = m.GetEigenVectors();
431 eval = m.GetEigenValues();
432 // Largest eigenvector
434 // cout<<eval[0]<<" "<<eval[1]<<endl;
435 if (eval[0] < eval[1]) jev = 1;
438 evec0 = TMatrixDColumn(evecm, jev);
439 Double_t compx=evec0[0];
440 Double_t compy=evec0[1];
441 TVector2 evec(compx, compy);
443 if(jev==1) circ=2*eval[0];
444 if(jev==0) circ=2*eval[1];
455 //________________________________________________________________________
456 Float_t AliAnalysisTaskEmcalQGTagging::GetJetCircularity(AliEmcalJet *jet, Int_t jetContNb =0 ) {
457 //calc subtracted jet mass
459 if((fJetShapeSub==kDerivSub)&&(jetContNb==0))
460 return jet->GetSecondOrderSubtractedCircularity();
462 return Circularity(jet, jetContNb);
466 //________________________________________________________________________
467 Float_t AliAnalysisTaskEmcalQGTagging::LeSub(AliEmcalJet *jet, Int_t jetContNb =0 ){
469 AliJetContainer *jetCont = GetJetContainer(jetContNb);
470 if (!jet->GetNumberOfTracks())
474 AliVParticle *vp1 = 0x0;
475 AliVParticle *vp2 = 0x0;
476 std::vector<int> ordindex;
477 ordindex=jet->SortConstituentsPt(jetCont->GetParticleContainer()->GetArray());
479 vp1 = static_cast<AliVParticle*>(jet->TrackAt(ordindex[0], jetCont->GetParticleContainer()->GetArray()));
480 vp2 = static_cast<AliVParticle*>(jet->TrackAt(ordindex[1], jetCont->GetParticleContainer()->GetArray()));
488 //________________________________________________________________________
489 Float_t AliAnalysisTaskEmcalQGTagging::GetJetLeSub(AliEmcalJet *jet, Int_t jetContNb =0) {
490 //calc subtracted jet mass
492 if((fJetShapeSub==kDerivSub)&&(jetContNb==0))
493 return jet->GetSecondOrderSubtractedLeSub();
495 return LeSub(jet, jetContNb);
499 //________________________________________________________________________
500 Float_t AliAnalysisTaskEmcalQGTagging::GetJetNumberOfConstituents(AliEmcalJet *jet,Int_t jetContNb=0) {
501 //calc subtracted jet mass
503 if((fJetShapeSub==kDerivSub)&&(jetContNb==0))
504 return jet->GetSecondOrderSubtractedConstituent();
506 return jet->GetNumberOfTracks();
511 //______________________________________________________________________________
512 Float_t AliAnalysisTaskEmcalQGTagging::Sigma2(AliEmcalJet *jet, Int_t jetContNb=0){
514 AliJetContainer *jetCont = GetJetContainer(jetContNb);
515 if (!jet->GetNumberOfTracks())
523 AliVParticle *vp1 = 0x0;
524 for(UInt_t i = 0; i < jet->GetNumberOfTracks(); i++) {
525 vp1 = static_cast<AliVParticle*>(jet->TrackAt(i, jetCont->GetParticleContainer()->GetArray()));
526 Double_t ppt=vp1->Pt();
527 Double_t dphi = vp1->Phi()-jet->Phi();
528 if(dphi<-1.*TMath::Pi()) dphi+=TMath::TwoPi();
529 if(dphi>TMath::Pi()) dphi-=TMath::TwoPi();
530 Double_t deta = vp1->Eta()-jet->Eta();
531 mxx += ppt*ppt*deta*deta;
532 myy += ppt*ppt*dphi*dphi;
533 mxy -= ppt*ppt*deta*dphi;
539 if(sump2==0) return 0;
541 Double_t ele[4] = {mxx , mxy , mxy , myy };
542 TMatrixDSym m0(2,ele);
545 TMatrixDSymEigen m(m0);
547 TMatrixD evecm = m.GetEigenVectors();
548 eval = m.GetEigenValues();
549 // Largest eigenvector
551 // cout<<eval[0]<<" "<<eval[1]<<endl;
552 if (eval[0] < eval[1]) jev = 1;
555 evec0 = TMatrixDColumn(evecm, jev);
556 Double_t compx=evec0[0];
557 Double_t compy=evec0[1];
558 TVector2 evec(compx, compy);
560 if(jev==1) sig=TMath::Sqrt(TMath::Abs(eval[0])/sump2);
561 if(jev==0) sig=TMath::Sqrt(TMath::Abs(eval[1])/sump2);
567 //________________________________________________________________________
568 Float_t AliAnalysisTaskEmcalQGTagging::GetSigma2(AliEmcalJet *jet, Int_t jetContNb=0) {
569 //calc subtracted jet mass
571 if((fJetShapeSub==kDerivSub)&&(jetContNb==0))
572 return jet->GetSecondOrderSubtractedSigma2();
574 return Sigma2(jet, jetContNb);
578 //________________________________________________________________________
579 Bool_t AliAnalysisTaskEmcalQGTagging::RetrieveEventObjects() {
581 // retrieve event objects
583 if (!AliAnalysisTaskEmcalJet::RetrieveEventObjects())
589 //_______________________________________________________________________
590 void AliAnalysisTaskEmcalQGTagging::Terminate(Option_t *)
592 // Called once at the end of the analysis.
594 // fTreeObservableTagging = dynamic_cast<TTree*>(GetOutputData(1));
595 // if (!fTreeObservableTagging){
596 // Printf("ERROR: fTreeObservableTagging not available");