1 /*************************************************************************
2 * Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 ///////////////////////////////////////////////////////////////////////////
17 // Dielectron Analysis Main class //
20 Framework to perform event selectoin, single track selection and track pair
23 Convention for the signs of the pair in fPairCandidates:
24 The names are available via the function PairClassName(Int_t i)
26 0: ev1+ ev1+ (same event like sign +)
27 1: ev1+ ev1- (same event unlike sign)
28 2: ev1- ev1- (same event like sign -)
30 3: ev1+ ev2+ (mixed event like sign +)
31 4: ev1- ev2+ (mixed event unlike sign -+)
32 6: ev1+ ev2- (mixed event unlike sign +-)
33 7: ev1- ev2- (mixed event like sign -)
35 5: ev2+ ev2+ (same event like sign +)
36 8: ev2+ ev2- (same event unlike sign)
37 9: ev2- ev2- (same event like sign -)
39 10: ev1+ ev1- (same event track rotation)
43 ///////////////////////////////////////////////////////////////////////////
50 #include <AliKFParticle.h>
52 #include <AliEventplane.h>
53 #include <AliVEvent.h>
54 #include <AliVParticle.h>
55 #include <AliVTrack.h>
56 #include "AliDielectronPair.h"
57 #include "AliDielectronHistos.h"
58 #include "AliDielectronCF.h"
59 #include "AliDielectronMC.h"
60 #include "AliDielectronVarManager.h"
61 #include "AliDielectronTrackRotator.h"
62 #include "AliDielectronDebugTree.h"
63 #include "AliDielectronSignalMC.h"
64 #include "AliDielectronMixingHandler.h"
66 #include "AliDielectron.h"
68 ClassImp(AliDielectron)
70 const char* AliDielectron::fgkTrackClassNames[4] = {
77 const char* AliDielectron::fgkPairClassNames[11] = {
91 //________________________________________________________________
92 AliDielectron::AliDielectron() :
93 TNamed("AliDielectron","AliDielectron"),
94 fEventFilter("EventFilter"),
95 fTrackFilter("TrackFilter"),
96 fPairPreFilter("PairPreFilter"),
97 fPairPreFilterLegs("PairPreFilterLegs"),
98 fPairFilter("PairFilter"),
99 fEventPlanePreFilter("EventPlanePreFilter"),
100 fEventPlanePOIPreFilter("EventPlanePOIPreFilter"),
109 fPairCandidates(new TObjArray(11)),
114 fPreFilterEventPlane(kFALSE),
115 fLikeSignSubEvents(kFALSE),
116 fPreFilterUnlikeOnly(kFALSE),
117 fPreFilterAllSigns(kFALSE),
119 fStoreRotatedPairs(kFALSE),
120 fDontClearArrays(kFALSE),
121 fEstimatorFilename(""),
122 fTRDpidCorrectionFilename(""),
123 fVZEROCalibrationFilename(""),
124 fVZERORecenteringFilename("")
127 // Default constructor
132 //________________________________________________________________
133 AliDielectron::AliDielectron(const char* name, const char* title) :
135 fEventFilter("EventFilter"),
136 fTrackFilter("TrackFilter"),
137 fPairPreFilter("PairPreFilter"),
138 fPairPreFilterLegs("PairPreFilterLegs"),
139 fPairFilter("PairFilter"),
140 fEventPlanePreFilter("EventPlanePreFilter"),
141 fEventPlanePOIPreFilter("EventPlanePOIPreFilter"),
150 fPairCandidates(new TObjArray(11)),
155 fPreFilterEventPlane(kFALSE),
156 fLikeSignSubEvents(kFALSE),
157 fPreFilterUnlikeOnly(kFALSE),
158 fPreFilterAllSigns(kFALSE),
160 fStoreRotatedPairs(kFALSE),
161 fDontClearArrays(kFALSE),
162 fEstimatorFilename(""),
163 fTRDpidCorrectionFilename(""),
164 fVZEROCalibrationFilename(""),
165 fVZERORecenteringFilename("")
173 //________________________________________________________________
174 AliDielectron::~AliDielectron()
177 // Default destructor
179 if (fHistoArray) delete fHistoArray;
180 if (fHistos) delete fHistos;
181 if (fPairCandidates) delete fPairCandidates;
182 if (fDebugTree) delete fDebugTree;
183 if (fMixing) delete fMixing;
184 if (fSignalsMC) delete fSignalsMC;
185 if (fCfManagerPair) delete fCfManagerPair;
188 //________________________________________________________________
189 void AliDielectron::Init()
192 // Initialise objects
195 if(GetHasMC()) AliDielectronMC::Instance()->SetHasMC(GetHasMC());
197 InitPairCandidateArrays();
199 if (fCfManagerPair) {
200 fCfManagerPair->SetSignalsMC(fSignalsMC);
201 fCfManagerPair->InitialiseContainer(fPairFilter);
204 fTrackRotator->SetTrackArrays(&fTracks[0],&fTracks[1]);
205 fTrackRotator->SetPdgLegs(fPdgLeg1,fPdgLeg2);
207 if (fDebugTree) fDebugTree->SetDielectron(this);
208 if(fEstimatorFilename.Contains(".root")) AliDielectronVarManager::InitEstimatorAvg(fEstimatorFilename.Data());
209 if(fTRDpidCorrectionFilename.Contains(".root")) AliDielectronVarManager::InitTRDpidEffHistograms(fTRDpidCorrectionFilename.Data());
210 if(fVZEROCalibrationFilename.Contains(".root")) AliDielectronVarManager::SetVZEROCalibrationFile(fVZEROCalibrationFilename.Data());
211 if(fVZERORecenteringFilename.Contains(".root")) AliDielectronVarManager::SetVZERORecenteringFile(fVZERORecenteringFilename.Data());
213 if (fMixing) fMixing->Init(this);
215 fHistoArray->SetSignalsMC(fSignalsMC);
220 //________________________________________________________________
221 void AliDielectron::Process(AliVEvent *ev1, AliVEvent *ev2)
224 // Process the events
227 //at least first event is needed!
229 AliError("At least first event must be set!");
232 AliDielectronVarManager::SetEvent(ev1);
234 //set mixing bin to event data
235 Int_t bin=fMixing->FindBin(AliDielectronVarManager::GetData());
236 AliDielectronVarManager::SetValue(AliDielectronVarManager::kMixingBin,bin);
239 //in case we have MC load the MC event and process the MC particles
240 if (AliDielectronMC::Instance()->ConnectMCEvent()){
244 //if candidate array doesn't exist, create it
245 if (!fPairCandidates->UncheckedAt(0)) {
246 InitPairCandidateArrays();
251 //mask used to require that all cuts are fulfilled
252 UInt_t selectedMask=(1<<fEventFilter.GetCuts()->GetEntries())-1;
255 if ((ev1&&fEventFilter.IsSelected(ev1)!=selectedMask) ||
256 (ev2&&fEventFilter.IsSelected(ev2)!=selectedMask)) return;
258 // AliDielectronVarManager::SetEvent(ev1); // why a second time???
260 //fill track arrays for the first event
262 FillTrackArrays(ev1);
263 if (((fPreFilterAllSigns)||(fPreFilterUnlikeOnly)) && ( fPairPreFilter.GetCuts()->GetEntries()>0 )) PairPreFilter(0, 1, fTracks[0], fTracks[1]);
267 //fill track arrays for the second event
269 FillTrackArrays(ev2,1);
270 if (((fPreFilterAllSigns)||(fPreFilterUnlikeOnly)) && ( fPairPreFilter.GetCuts()->GetEntries()>0 )) PairPreFilter(2, 3, fTracks[2], fTracks[3]);
273 // TPC event plane correction
274 AliEventplane *cevplane = new AliEventplane();
275 if (ev1 && cevplane && fPreFilterEventPlane && ( fEventPlanePreFilter.GetCuts()->GetEntries()>0 || fEventPlanePOIPreFilter.GetCuts()->GetEntries()>0))
276 EventPlanePreFilter(0, 1, fTracks[0], fTracks[1], ev1, cevplane);
279 // create pairs and fill pair candidate arrays
280 for (Int_t itrackArr1=0; itrackArr1<4; ++itrackArr1){
281 for (Int_t itrackArr2=itrackArr1; itrackArr2<4; ++itrackArr2){
282 FillPairArrays(itrackArr1, itrackArr2);
288 fTrackRotator->SetEvent(ev1);
293 //fill debug tree if a manager is attached
294 if (fDebugTree) FillDebugTree();
296 //process event mixing
298 fMixing->Fill(ev1,this);
299 // FillHistograms(0x0,kTRUE);
302 //in case there is a histogram manager, fill the QA histograms
303 if (fHistos && fSignalsMC) FillMCHistograms(ev1);
304 if (fHistos) FillHistograms(ev1);
308 if (!fDontClearArrays) ClearArrays();
309 AliDielectronVarManager::SetTPCEventPlane(0x0);
313 //________________________________________________________________
314 void AliDielectron::ProcessMC(AliVEvent *ev1)
317 // Process the MC data
320 AliDielectronMC *dieMC=AliDielectronMC::Instance();
322 if (fHistos) FillHistogramsMC(dieMC->GetMCEvent(), ev1);
324 if(!fSignalsMC) return;
325 //loop over all MC data and Fill the CF container if it exist
326 if (!fCfManagerPair && !fHistoArray) return;
327 if(fCfManagerPair) fCfManagerPair->SetPdgMother(fPdgMother);
329 Bool_t bFillCF = (fCfManagerPair ? fCfManagerPair->GetStepForMCtruth() : kFALSE);
330 Bool_t bFillHF = (fHistoArray ? fHistoArray->GetStepForMCGenerated() : kFALSE);
331 if(!bFillCF && !bFillHF) return;
333 // signals to be studied
334 Int_t nSignals = fSignalsMC->GetEntries();
336 // initialize 2D arrays of labels for particles from each MC signal
337 Int_t** labels1; // labels for particles satisfying branch 1
338 Int_t** labels2; // labels for particles satisfying branch 2
339 Int_t** labels12; // labels for particles satisfying both branches
340 labels1 = new Int_t*[nSignals];
341 labels2 = new Int_t*[nSignals];
342 labels12 = new Int_t*[nSignals];
343 Int_t* indexes1=new Int_t[nSignals];
344 Int_t* indexes2=new Int_t[nSignals];
345 Int_t* indexes12=new Int_t[nSignals];
346 for(Int_t isig=0;isig<nSignals;++isig) {
347 *(labels1+isig) = new Int_t[dieMC->GetNMCTracks()];
348 *(labels2+isig) = new Int_t[dieMC->GetNMCTracks()];
349 *(labels12+isig) = new Int_t[dieMC->GetNMCTracks()];
350 for(Int_t ip=0; ip<dieMC->GetNMCTracks();++ip) {
351 labels1[isig][ip] = -1;
352 labels2[isig][ip] = -1;
353 labels12[isig][ip] = -1;
360 Bool_t truth1=kFALSE;
361 Bool_t truth2=kFALSE;
362 // loop over the MC tracks
363 for(Int_t ipart=0; ipart<dieMC->GetNMCTracks(); ++ipart) {
364 for(Int_t isig=0; isig<nSignals; ++isig) { // loop over signals
365 // Proceed only if this signal is required in the pure MC step
366 // NOTE: Some signals can be satisfied by many particles and this leads to high
367 // computation times (e.g. secondary electrons from the GEANT transport). Be aware of this!!
368 if(!((AliDielectronSignalMC*)fSignalsMC->At(isig))->GetFillPureMCStep()) continue;
370 truth1 = dieMC->IsMCTruth(ipart, (AliDielectronSignalMC*)fSignalsMC->At(isig), 1);
371 truth2 = dieMC->IsMCTruth(ipart, (AliDielectronSignalMC*)fSignalsMC->At(isig), 2);
373 // particles satisfying both branches are treated separately to avoid double counting during pairing
374 if(truth1 && truth2) {
375 labels12[isig][indexes12[isig]] = ipart;
380 labels1[isig][indexes1[isig]] = ipart;
384 labels2[isig][indexes2[isig]] = ipart;
389 } // end loop over MC particles
391 // Do the pairing and fill the CF container with pure MC info
392 for(Int_t isig=0; isig<nSignals; ++isig) {
393 // mix the particles which satisfy only one of the signal branches
394 for(Int_t i1=0;i1<indexes1[isig];++i1) {
395 for(Int_t i2=0;i2<indexes2[isig];++i2) {
396 if(bFillCF) fCfManagerPair->FillMC(labels1[isig][i1], labels2[isig][i2], isig);
397 if(bFillHF) fHistoArray->Fill(labels1[isig][i1], labels2[isig][i2], isig);
400 // mix the particles which satisfy both branches
401 for(Int_t i1=0;i1<indexes12[isig];++i1) {
402 for(Int_t i2=0; i2<i1; ++i2) {
403 if(bFillCF) fCfManagerPair->FillMC(labels12[isig][i1], labels12[isig][i2], isig);
404 if(bFillHF) fHistoArray->Fill(labels12[isig][i1], labels12[isig][i2], isig);
407 } // end loop over signals
409 // release the memory
410 for(Int_t isig=0;isig<nSignals;++isig) {
411 delete [] *(labels1+isig);
412 delete [] *(labels2+isig);
413 delete [] *(labels12+isig);
423 //________________________________________________________________
424 void AliDielectron::FillHistogramsTracks(TObjArray **tracks)
427 // Fill Histogram information for tracks after prefilter
428 // ignore mixed events - for prefilter, only single tracks +/- are relevant
431 TString className,className2;
432 Double_t values[AliDielectronVarManager::kNMaxValues];
434 //Fill track information, separately for the track array candidates
435 for (Int_t i=0; i<2; ++i){
436 className.Form("Pre_%s",fgkTrackClassNames[i]);
437 if (!fHistos->GetHistogramList()->FindObject(className.Data())) continue;
438 Int_t ntracks=tracks[i]->GetEntriesFast();
439 for (Int_t itrack=0; itrack<ntracks; ++itrack){
440 AliDielectronVarManager::Fill(tracks[i]->UncheckedAt(itrack), values);
441 fHistos->FillClass(className, AliDielectronVarManager::kNMaxValues, values);
447 //________________________________________________________________
448 void AliDielectron::FillHistogramsMC(const AliMCEvent *ev, AliVEvent *ev1)
451 // Fill Histogram information for MCEvents
454 Double_t values[AliDielectronVarManager::kNMaxValues]={0.};
455 // Fill event information
456 AliDielectronVarManager::Fill(ev1, values); // ESD/AOD information
457 AliDielectronVarManager::Fill(ev, values); // MC truth info
458 if (fHistos->GetHistogramList()->FindObject("MCEvent"))
459 fHistos->FillClass("MCEvent", AliDielectronVarManager::kNMaxValues, values);
463 //________________________________________________________________
464 void AliDielectron::FillHistograms(const AliVEvent *ev, Bool_t pairInfoOnly)
467 // Fill Histogram information for tracks and pairs
470 TString className,className2;
471 Double_t values[AliDielectronVarManager::kNMaxValues]={0.};
472 //Fill event information
473 if (ev){ //TODO: Why not use GetData() ??? See below event plane stuff!!!
474 AliDielectronVarManager::Fill(ev, values); //data should already be stored in AliDielectronVarManager from SetEvent, does EV plane correction rely on this???
476 //set mixing bin to event data
477 Int_t bin=fMixing->FindBin(values);
478 values[AliDielectronVarManager::kMixingBin]=bin;
481 if (fHistos->GetHistogramList()->FindObject("Event"))
482 // fHistos->FillClass("Event", AliDielectronVarManager::kNMaxValues, AliDielectronVarManager::GetData());
483 fHistos->FillClass("Event", AliDielectronVarManager::kNMaxValues, values); //check event plane stuff and replace with above...
486 //Fill track information, separately for the track array candidates
488 for (Int_t i=0; i<4; ++i){
489 className.Form("Track_%s",fgkTrackClassNames[i]);
490 if (!fHistos->GetHistogramList()->FindObject(className.Data())) continue;
491 Int_t ntracks=fTracks[i].GetEntriesFast();
492 for (Int_t itrack=0; itrack<ntracks; ++itrack){
493 AliDielectronVarManager::Fill(fTracks[i].UncheckedAt(itrack), values);
494 fHistos->FillClass(className, AliDielectronVarManager::kNMaxValues, values);
499 //Fill Pair information, separately for all pair candidate arrays and the legs
500 TObjArray arrLegs(100);
501 for (Int_t i=0; i<10; ++i){
502 className.Form("Pair_%s",fgkPairClassNames[i]);
503 className2.Form("Track_Legs_%s",fgkPairClassNames[i]);
504 Bool_t pairClass=fHistos->GetHistogramList()->FindObject(className.Data())!=0x0;
505 Bool_t legClass=fHistos->GetHistogramList()->FindObject(className2.Data())!=0x0;
506 if (!pairClass&&!legClass) continue;
507 Int_t ntracks=PairArray(i)->GetEntriesFast();
508 for (Int_t ipair=0; ipair<ntracks; ++ipair){
509 AliDielectronPair *pair=static_cast<AliDielectronPair*>(PairArray(i)->UncheckedAt(ipair));
511 //fill pair information
513 AliDielectronVarManager::Fill(pair, values);
514 fHistos->FillClass(className, AliDielectronVarManager::kNMaxValues, values);
517 //fill leg information, don't fill the information twice
519 AliVParticle *d1=pair->GetFirstDaughter();
520 AliVParticle *d2=pair->GetSecondDaughter();
521 if (!arrLegs.FindObject(d1)){
522 AliDielectronVarManager::Fill(d1, values);
523 fHistos->FillClass(className2, AliDielectronVarManager::kNMaxValues, values);
526 if (!arrLegs.FindObject(d2)){
527 AliDielectronVarManager::Fill(d2, values);
528 fHistos->FillClass(className2, AliDielectronVarManager::kNMaxValues, values);
533 if (legClass) arrLegs.Clear();
537 //________________________________________________________________
538 void AliDielectron::FillHistogramsPair(AliDielectronPair *pair,Bool_t fromPreFilter/*=kFALSE*/)
541 // Fill Histogram information for pairs and the track in the pair
542 // NOTE: in this funtion the leg information may be filled multiple
543 // times. This funtion is used in the track rotation pairing
544 // and those legs are not saved!
546 TString className,className2;
547 Double_t values[AliDielectronVarManager::kNMaxValues];
549 //Fill Pair information, separately for all pair candidate arrays and the legs
550 TObjArray arrLegs(100);
551 const Int_t type=pair->GetType();
553 className.Form("RejPair_%s",fgkPairClassNames[type]);
554 className2.Form("RejTrack_%s",fgkPairClassNames[type]);
556 className.Form("Pair_%s",fgkPairClassNames[type]);
557 className2.Form("Track_Legs_%s",fgkPairClassNames[type]);
560 Bool_t pairClass=fHistos->GetHistogramList()->FindObject(className.Data())!=0x0;
561 Bool_t legClass=fHistos->GetHistogramList()->FindObject(className2.Data())!=0x0;
563 //fill pair information
565 AliDielectronVarManager::Fill(pair, values);
566 fHistos->FillClass(className, AliDielectronVarManager::kNMaxValues, values);
570 AliVParticle *d1=pair->GetFirstDaughter();
571 AliDielectronVarManager::Fill(d1, values);
572 fHistos->FillClass(className2, AliDielectronVarManager::kNMaxValues, values);
574 AliVParticle *d2=pair->GetSecondDaughter();
575 AliDielectronVarManager::Fill(d2, values);
576 fHistos->FillClass(className2, AliDielectronVarManager::kNMaxValues, values);
580 //________________________________________________________________
581 void AliDielectron::FillTrackArrays(AliVEvent * const ev, Int_t eventNr)
584 // select tracks and fill track candidate arrays
585 // eventNr = 0: First event, use track arrays 0 and 1
586 // eventNr = 1: Second event, use track arrays 2 and 3
589 Int_t ntracks=ev->GetNumberOfTracks();
590 UInt_t selectedMask=(1<<fTrackFilter.GetCuts()->GetEntries())-1;
591 for (Int_t itrack=0; itrack<ntracks; ++itrack){
593 AliVParticle *particle=ev->GetTrack(itrack);
596 if (fTrackFilter.IsSelected(particle)!=selectedMask) continue;
598 //fill selected particle into the corresponding track arrays
599 Short_t charge=particle->Charge();
600 if (charge>0) fTracks[eventNr*2].Add(particle);
601 else if (charge<0) fTracks[eventNr*2+1].Add(particle);
605 //________________________________________________________________
606 void AliDielectron::EventPlanePreFilter(Int_t arr1, Int_t arr2, TObjArray arrTracks1, TObjArray arrTracks2, const AliVEvent *ev, AliEventplane *cevplane)
609 // Prefilter tracks and tracks from pairs
610 // Needed for rejection in the Q-Vector of the event plane
611 // remove contribution of all tracks to the Q-vector that are in invariant mass window
613 AliEventplane *evplane = const_cast<AliVEvent *>(ev)->GetEventplane();
614 // AliEventplane *evplane = ev->GetEventplane();
617 // do not change these vectors qref
618 TVector2 * const qref = evplane->GetQVector();
621 TVector2 *qrsub1 = evplane->GetQsub1();
622 TVector2 *qrsub2 = evplane->GetQsub2();
625 TVector2 *qcorr = new TVector2(*qref);
626 TVector2 *qcsub1 = 0x0;
627 TVector2 *qcsub2 = 0x0;
628 // printf("qrsub1 %p %f \n",qrsub1,qrsub1->X());
632 Bool_t etagap = kFALSE;
633 for (Int_t iCut=0; iCut<fEventPlanePreFilter.GetCuts()->GetEntries();++iCut) {
634 TString cutName=fEventPlanePreFilter.GetCuts()->At(iCut)->GetName();
635 if(cutName.Contains("eta") || cutName.Contains("Eta")) etagap=kTRUE;
638 // subevent separation
639 if(fLikeSignSubEvents || etagap) {
640 qcsub1 = new TVector2(*qcorr);
641 qcsub2 = new TVector2(*qcorr);
643 Int_t ntracks=ev->GetNumberOfTracks();
646 for (Int_t itrack=0; itrack<ntracks; ++itrack){
647 AliVParticle *particle=ev->GetTrack(itrack);
648 AliVTrack *track= static_cast<AliVTrack*>(particle);
649 if (!track) continue;
651 Double_t cQX = evplane->GetQContributionX(track);
652 Double_t cQY = evplane->GetQContributionY(track);
654 // by charge sub1+ sub2-
655 if(fLikeSignSubEvents) {
656 Short_t charge=track->Charge();
657 if (charge<0) qcsub1->Set(qcsub1->X()-cQX, qcsub1->Y()-cQY);
658 if (charge>0) qcsub2->Set(qcsub2->X()-cQX, qcsub2->Y()-cQY);
660 // by eta sub1+ sub2-
662 Double_t eta=track->Eta();
663 if (eta<0.0) qcsub1->Set(qcsub1->X()-cQX, qcsub1->Y()-cQY);
664 if (eta>0.0) qcsub2->Set(qcsub2->X()-cQX, qcsub2->Y()-cQY);
670 qcsub1 = new TVector2(*qrsub1);
671 qcsub2 = new TVector2(*qrsub2);
674 // apply cuts, e.g. etagap
675 if(fEventPlanePreFilter.GetCuts()->GetEntries()) {
676 UInt_t selectedMask=(1<<fEventPlanePreFilter.GetCuts()->GetEntries())-1;
677 Int_t ntracks=ev->GetNumberOfTracks();
678 for (Int_t itrack=0; itrack<ntracks; ++itrack){
679 AliVParticle *particle=ev->GetTrack(itrack);
680 AliVTrack *track= static_cast<AliVTrack*>(particle);
681 if (!track) continue;
684 UInt_t cutMask=fEventPlanePreFilter.IsSelected(track);
686 if (cutMask==selectedMask) continue;
691 cQX = evplane->GetQContributionX(track);
692 cQY = evplane->GetQContributionY(track);
694 Double_t cQXsub1 = evplane->GetQContributionXsub1(track);
695 Double_t cQYsub1 = evplane->GetQContributionYsub1(track);
696 Double_t cQXsub2 = evplane->GetQContributionXsub2(track);
697 Double_t cQYsub2 = evplane->GetQContributionYsub2(track);
700 qcorr->Set(qcorr->X()-cQX, qcorr->Y()-cQY);
701 qcsub1->Set(qcsub1->X()-cQXsub1, qcsub1->Y()-cQYsub1);
702 qcsub2->Set(qcsub2->X()-cQXsub2, qcsub2->Y()-cQYsub2);
706 // POI (particle of interest) rejection
707 Int_t pairIndex=GetPairIndex(arr1,arr2);
709 Int_t ntrack1=arrTracks1.GetEntriesFast();
710 Int_t ntrack2=arrTracks2.GetEntriesFast();
711 AliDielectronPair candidate;
712 candidate.SetKFUsage(fUseKF);
714 UInt_t selectedMask=(1<<fEventPlanePOIPreFilter.GetCuts()->GetEntries())-1;
715 for (Int_t itrack1=0; itrack1<ntrack1; ++itrack1){
717 if (arr1==arr2) end=itrack1;
718 Bool_t accepted=kFALSE;
719 for (Int_t itrack2=0; itrack2<end; ++itrack2){
720 TObject *track1=arrTracks1.UncheckedAt(itrack1);
721 TObject *track2=arrTracks2.UncheckedAt(itrack2);
722 if (!track1 || !track2) continue;
724 candidate.SetTracks(static_cast<AliVTrack*>(track1), fPdgLeg1,
725 static_cast<AliVTrack*>(track2), fPdgLeg2);
727 candidate.SetType(pairIndex);
728 candidate.SetLabel(AliDielectronMC::Instance()->GetLabelMotherWithPdg(&candidate,fPdgMother));
731 UInt_t cutMask=fEventPlanePOIPreFilter.IsSelected(&candidate);
733 if (cutMask==selectedMask) continue;
736 //remove the tracks from the Track arrays
737 arrTracks2.AddAt(0x0,itrack2);
739 if ( accepted ) arrTracks1.AddAt(0x0,itrack1);
741 //compress the track arrays
742 arrTracks1.Compress();
743 arrTracks2.Compress();
746 //Modify the components: subtract the tracks
747 ntrack1=arrTracks1.GetEntriesFast();
748 ntrack2=arrTracks2.GetEntriesFast();
750 // remove leg1 contribution
751 for (Int_t itrack=0; itrack<ntrack1; ++itrack){
752 AliVTrack *track= static_cast<AliVTrack*>(arrTracks1.UncheckedAt(itrack));
753 if (!track) continue;
755 Double_t cQX = evplane->GetQContributionX(track);
756 Double_t cQY = evplane->GetQContributionY(track);
757 Double_t cQXsub1 = evplane->GetQContributionXsub1(track);
758 Double_t cQYsub1 = evplane->GetQContributionYsub1(track);
759 Double_t cQXsub2 = evplane->GetQContributionXsub2(track);
760 Double_t cQYsub2 = evplane->GetQContributionYsub2(track);
763 qcorr->Set(qcorr->X()-cQX, qcorr->Y()-cQY);
764 qcsub1->Set(qcsub1->X()-cQXsub1, qcsub1->Y()-cQYsub1);
765 qcsub2->Set(qcsub2->X()-cQXsub2, qcsub2->Y()-cQYsub2);
767 // remove leg2 contribution
768 for (Int_t itrack=0; itrack<ntrack2; ++itrack){
769 AliVTrack *track= static_cast<AliVTrack*>(arrTracks2.UncheckedAt(itrack));
770 if (!track) continue;
772 Double_t cQX = evplane->GetQContributionX(track);
773 Double_t cQY = evplane->GetQContributionY(track);
774 Double_t cQXsub1 = evplane->GetQContributionXsub1(track);
775 Double_t cQYsub1 = evplane->GetQContributionYsub1(track);
776 Double_t cQXsub2 = evplane->GetQContributionXsub2(track);
777 Double_t cQYsub2 = evplane->GetQContributionYsub2(track);
780 qcorr->Set(qcorr->X()-cQX, qcorr->Y()-cQY);
781 qcsub1->Set(qcsub1->X()-cQXsub1, qcsub1->Y()-cQYsub1);
782 qcsub2->Set(qcsub2->X()-cQXsub2, qcsub2->Y()-cQYsub2);
785 // printf("qrsub1 %p %f \t qcsub1 %p %f \n",qrsub1,qrsub1->X(),qcsub1,qcsub1->X());
786 // set AliEventplane with corrected values
787 cevplane->SetQVector(qcorr);
788 cevplane->SetQsub(qcsub1, qcsub2);
789 AliDielectronVarManager::SetTPCEventPlane(cevplane);
792 //________________________________________________________________
793 void AliDielectron::PairPreFilter(Int_t arr1, Int_t arr2, TObjArray &arrTracks1, TObjArray &arrTracks2)
796 // Prefilter tracks from pairs
797 // Needed for datlitz rejections
798 // remove all tracks from the Single track arrays that pass the cuts in this filter
801 Int_t ntrack1=arrTracks1.GetEntriesFast();
802 Int_t ntrack2=arrTracks2.GetEntriesFast();
803 AliDielectronPair candidate;
804 candidate.SetKFUsage(fUseKF);
805 // flag arrays for track removal
806 Bool_t *bTracks1 = new Bool_t[ntrack1];
807 for (Int_t itrack1=0; itrack1<ntrack1; ++itrack1) bTracks1[itrack1]=kFALSE;
808 Bool_t *bTracks2 = new Bool_t[ntrack2];
809 for (Int_t itrack2=0; itrack2<ntrack2; ++itrack2) bTracks2[itrack2]=kFALSE;
811 UInt_t selectedMask=(1<<fPairPreFilter.GetCuts()->GetEntries())-1;
812 UInt_t selectedMaskPair=(1<<fPairFilter.GetCuts()->GetEntries())-1;
814 Int_t nRejPasses = 1; //for fPreFilterUnlikeOnly and no set flag
815 if (fPreFilterAllSigns) nRejPasses = 3;
817 for (Int_t iRP=0; iRP < nRejPasses; ++iRP) {
818 Int_t arr1RP=arr1, arr2RP=arr2;
819 TObjArray *arrTracks1RP=&arrTracks1;
820 TObjArray *arrTracks2RP=&arrTracks2;
821 Bool_t *bTracks1RP = bTracks1;
822 Bool_t *bTracks2RP = bTracks2;
824 case 1: arr1RP=arr1;arr2RP=arr1;
825 arrTracks1RP=&arrTracks1;
826 arrTracks2RP=&arrTracks1;
827 bTracks1RP = bTracks1;
828 bTracks2RP = bTracks1;
830 case 2: arr1RP=arr2;arr2RP=arr2;
831 arrTracks1RP=&arrTracks2;
832 arrTracks2RP=&arrTracks2;
833 bTracks1RP = bTracks2;
834 bTracks2RP = bTracks2;
836 default: ;//nothing to do
838 Int_t ntrack1RP=(*arrTracks1RP).GetEntriesFast();
839 Int_t ntrack2RP=(*arrTracks2RP).GetEntriesFast();
841 Int_t pairIndex=GetPairIndex(arr1RP,arr2RP);
843 for (Int_t itrack1=0; itrack1<ntrack1RP; ++itrack1){
845 if (arr1RP==arr2RP) end=itrack1;
846 for (Int_t itrack2=0; itrack2<end; ++itrack2){
847 TObject *track1=(*arrTracks1RP).UncheckedAt(itrack1);
848 TObject *track2=(*arrTracks2RP).UncheckedAt(itrack2);
849 if (!track1 || !track2) continue;
851 candidate.SetTracks(static_cast<AliVTrack*>(track1), fPdgLeg1,
852 static_cast<AliVTrack*>(track2), fPdgLeg2);
854 candidate.SetType(pairIndex);
855 candidate.SetLabel(AliDielectronMC::Instance()->GetLabelMotherWithPdg(&candidate,fPdgMother));
856 //relate to the production vertex
857 // if (AliDielectronVarManager::GetKFVertex()) candidate.SetProductionVertex(*AliDielectronVarManager::GetKFVertex());
860 UInt_t cutMask=fPairPreFilter.IsSelected(&candidate);
863 if (cutMask!=selectedMask) continue;
864 if (fCfManagerPair) fCfManagerPair->Fill(selectedMaskPair+1 ,&candidate);
865 if (fHistos) FillHistogramsPair(&candidate,kTRUE);
866 //set flags for track removal
867 bTracks1RP[itrack1]=kTRUE;
868 bTracks2RP[itrack2]=kTRUE;
873 //remove the tracks from the Track arrays
874 for (Int_t itrack1=0; itrack1<ntrack1; ++itrack1){
875 if(bTracks1[itrack1]) arrTracks1.AddAt(0x0, itrack1);
877 for (Int_t itrack2=0; itrack2<ntrack2; ++itrack2){
878 if(bTracks2[itrack2]) arrTracks2.AddAt(0x0, itrack2);
885 //compress the track arrays
886 arrTracks1.Compress();
887 arrTracks2.Compress();
889 //apply leg cuts after the pre filter
890 if ( fPairPreFilterLegs.GetCuts()->GetEntries()>0 ) {
891 selectedMask=(1<<fPairPreFilterLegs.GetCuts()->GetEntries())-1;
892 //loop over tracks from array 1
893 for (Int_t itrack=0; itrack<arrTracks1.GetEntriesFast();++itrack){
895 UInt_t cutMask=fPairPreFilterLegs.IsSelected(arrTracks1.UncheckedAt(itrack));
898 if (cutMask!=selectedMask) arrTracks1.AddAt(0x0,itrack);;
900 arrTracks1.Compress();
902 //in case of like sign don't loop over second array
904 arrTracks2=arrTracks1;
907 //loop over tracks from array 2
908 for (Int_t itrack=0; itrack<arrTracks2.GetEntriesFast();++itrack){
910 UInt_t cutMask=fPairPreFilterLegs.IsSelected(arrTracks2.UncheckedAt(itrack));
912 if (cutMask!=selectedMask) arrTracks2.AddAt(0x0,itrack);
914 arrTracks2.Compress();
918 //For unlike-sign monitor track-cuts:
919 if (arr1!=arr2&&fHistos) {
920 TObjArray *unlikesignArray[2] = {&arrTracks1,&arrTracks2};
921 FillHistogramsTracks(unlikesignArray);
925 //________________________________________________________________
926 void AliDielectron::FillPairArrays(Int_t arr1, Int_t arr2)
929 // select pairs and fill pair candidate arrays
932 TObjArray arrTracks1=fTracks[arr1];
933 TObjArray arrTracks2=fTracks[arr2];
935 //process pre filter if set
936 if ((!fPreFilterAllSigns) && (!fPreFilterUnlikeOnly) && ( fPairPreFilter.GetCuts()->GetEntries()>0 )) PairPreFilter(arr1, arr2, arrTracks1, arrTracks2);
938 Int_t pairIndex=GetPairIndex(arr1,arr2);
940 Int_t ntrack1=arrTracks1.GetEntriesFast();
941 Int_t ntrack2=arrTracks2.GetEntriesFast();
943 AliDielectronPair *candidate=new AliDielectronPair;
944 candidate->SetKFUsage(fUseKF);
946 UInt_t selectedMask=(1<<fPairFilter.GetCuts()->GetEntries())-1;
948 for (Int_t itrack1=0; itrack1<ntrack1; ++itrack1){
950 if (arr1==arr2) end=itrack1;
951 for (Int_t itrack2=0; itrack2<end; ++itrack2){
953 candidate->SetTracks(static_cast<AliVTrack*>(arrTracks1.UncheckedAt(itrack1)), fPdgLeg1,
954 static_cast<AliVTrack*>(arrTracks2.UncheckedAt(itrack2)), fPdgLeg2);
955 candidate->SetType(pairIndex);
956 Int_t label=AliDielectronMC::Instance()->GetLabelMotherWithPdg(candidate,fPdgMother);
957 candidate->SetLabel(label);
958 if (label>-1) candidate->SetPdgCode(fPdgMother);
961 UInt_t cutMask=fPairFilter.IsSelected(candidate);
963 //CF manager for the pair
964 if (fCfManagerPair) fCfManagerPair->Fill(cutMask,candidate);
965 //histogram array for the pair
966 if (fHistoArray) fHistoArray->Fill(pairIndex,candidate);
969 if (cutMask!=selectedMask) continue;
971 //add the candidate to the candidate array
972 PairArray(pairIndex)->Add(candidate);
973 //get a new candidate
974 candidate=new AliDielectronPair;
975 candidate->SetKFUsage(fUseKF);
978 //delete the surplus candidate
982 //________________________________________________________________
983 void AliDielectron::FillPairArrayTR()
986 // select pairs and fill pair candidate arrays
988 UInt_t selectedMask=(1<<fPairFilter.GetCuts()->GetEntries())-1;
990 while ( fTrackRotator->NextCombination() ){
991 AliDielectronPair candidate;
992 candidate.SetKFUsage(fUseKF);
993 candidate.SetTracks(&fTrackRotator->GetKFTrackP(), &fTrackRotator->GetKFTrackN(),
994 fTrackRotator->GetVTrackP(),fTrackRotator->GetVTrackN());
995 candidate.SetType(kEv1PMRot);
998 UInt_t cutMask=fPairFilter.IsSelected(&candidate);
1000 //CF manager for the pair
1001 if (fCfManagerPair) fCfManagerPair->Fill(cutMask,&candidate);
1002 //histogram array for the pair
1003 if (fHistoArray) fHistoArray->Fill((Int_t)kEv1PMRot,&candidate);
1006 if (cutMask==selectedMask) {
1007 if(fHistos) FillHistogramsPair(&candidate);
1008 if(fStoreRotatedPairs) PairArray(kEv1PMRot)->Add(new AliDielectronPair(candidate));
1013 //________________________________________________________________
1014 void AliDielectron::FillDebugTree()
1017 // Fill Histogram information for tracks and pairs
1021 for (Int_t i=0; i<10; ++i){
1022 Int_t ntracks=PairArray(i)->GetEntriesFast();
1023 for (Int_t ipair=0; ipair<ntracks; ++ipair){
1024 fDebugTree->Fill(static_cast<AliDielectronPair*>(PairArray(i)->UncheckedAt(ipair)));
1029 //________________________________________________________________
1030 void AliDielectron::SaveDebugTree()
1033 // delete the debug tree, this will also write the tree
1035 if (fDebugTree) fDebugTree->DeleteStreamer();
1039 //__________________________________________________________________
1040 void AliDielectron::AddSignalMC(AliDielectronSignalMC* signal) {
1042 // Add an MC signal to the signals list
1045 fSignalsMC = new TObjArray();
1046 fSignalsMC->SetOwner();
1048 fSignalsMC->Add(signal);
1050 //________________________________________________________________
1051 void AliDielectron::FillMCHistograms(const AliVEvent *ev) {
1053 // fill QA MC histograms for pairs and legs of all added mc signals
1056 if (!fSignalsMC) return;
1057 TString className,className2;
1058 Double_t values[AliDielectronVarManager::kNMaxValues]={0.};
1059 AliDielectronVarManager::Fill(ev, values); // get event informations
1060 //loop over all added mc signals
1061 for(Int_t isig=0; isig<fSignalsMC->GetEntries(); isig++) {
1063 className.Form("Pair_%s",fSignalsMC->At(isig)->GetName());
1064 className2.Form("Track_Legs_%s",fSignalsMC->At(isig)->GetName());
1065 Bool_t pairClass=fHistos->GetHistogramList()->FindObject(className.Data())!=0x0;
1066 Bool_t legClass=fHistos->GetHistogramList()->FindObject(className2.Data())!=0x0;
1067 if(!pairClass && !legClass) return;
1069 Int_t ntracks=PairArray(AliDielectron::kEv1PM)->GetEntriesFast(); // only SE +-
1070 for (Int_t ipair=0; ipair<ntracks; ++ipair){
1071 AliDielectronPair *pair=static_cast<AliDielectronPair*>(PairArray(AliDielectron::kEv1PM)->UncheckedAt(ipair));
1073 Bool_t isMCtruth = AliDielectronMC::Instance()->IsMCTruth(pair, (AliDielectronSignalMC*)fSignalsMC->At(isig));
1075 //fill pair information
1077 AliDielectronVarManager::Fill(pair, values);
1078 fHistos->FillClass(className, AliDielectronVarManager::kNMaxValues, values);
1080 //fill leg information, both + and - in the same histo
1082 AliDielectronVarManager::Fill(pair->GetFirstDaughter(),values);
1083 fHistos->FillClass(className2, AliDielectronVarManager::kNMaxValues, values);
1084 AliDielectronVarManager::Fill(pair->GetSecondDaughter(),values);
1085 fHistos->FillClass(className2, AliDielectronVarManager::kNMaxValues, values);