]> git.uio.no Git - u/mrichter/AliRoot.git/blame - PWG4/AliAnaParticleHadronCorrelation.cxx
git://git.uio.no / u / mrichter / AliRoot.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
New more general analysis implemention for particle identification and correlation...
[u/mrichter/AliRoot.git] / PWG4 / AliAnaParticleHadronCorrelation.cxx
CommitLineData
d92b41ad 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15/* $Id: $ */
16
17/* History of cvs commits:
18 *
19 * $Log$
20 *
21 *
22 */
23
24//_________________________________________________________________________
25// Class for the analysis of particle - hadron correlations
26// Particle (for example direct gamma) must be found in a previous analysis
27//-- Author: Gustavo Conesa (LNF-INFN)
28//////////////////////////////////////////////////////////////////////////////
29
30
31// --- ROOT system ---
32#include "Riostream.h"
33#include "TH2F.h"
34
35//---- ANALYSIS system ----
36#include "AliLog.h"
37#include "AliNeutralMesonSelection.h"
38#include "AliAnaParticleHadronCorrelation.h"
39#include "AliCaloTrackReader.h"
40
41ClassImp(AliAnaParticleHadronCorrelation)
42
43
44//____________________________________________________________________________
45 AliAnaParticleHadronCorrelation::AliAnaParticleHadronCorrelation() :
46 AliAnaBaseClass(),
47 fDeltaPhiMaxCut(0.), fDeltaPhiMinCut(0.),
48 fhPhiCharged(0), fhPhiNeutral(0), fhEtaCharged(0), fhEtaNeutral(0),
49 fhDeltaPhiCharged(0), fhDeltaPhiNeutral(0),
50 fhDeltaEtaCharged(0), fhDeltaEtaNeutral(0),
51 fhDeltaPhiChargedPt(0), fhDeltaPhiNeutralPt(0),
52 fhPtImbalanceNeutral(0), fhPtImbalanceCharged(0)
53{
54 //Default Ctor
55
56 //Initialize parameters
57 InitParameters();
58}
59
60//____________________________________________________________________________
61AliAnaParticleHadronCorrelation::AliAnaParticleHadronCorrelation(const AliAnaParticleHadronCorrelation & g) :
62 AliAnaBaseClass(g),
63 fDeltaPhiMaxCut(g.fDeltaPhiMaxCut), fDeltaPhiMinCut(g.fDeltaPhiMinCut),
64 fhPhiCharged(g.fhPhiCharged), fhPhiNeutral(g.fhPhiNeutral),
65 fhEtaCharged(g.fhEtaCharged), fhEtaNeutral(g.fhEtaNeutral),
66 fhDeltaPhiCharged(g.fhDeltaPhiCharged),
67 fhDeltaPhiNeutral(g.fhDeltaPhiNeutral),
68 fhDeltaEtaCharged(g.fhDeltaEtaCharged),
69 fhDeltaEtaNeutral(g.fhDeltaEtaNeutral),
70 fhDeltaPhiChargedPt(g.fhDeltaPhiChargedPt),
71 fhDeltaPhiNeutralPt(g.fhDeltaPhiNeutralPt),
72 fhPtImbalanceNeutral(g.fhPtImbalanceNeutral),
73 fhPtImbalanceCharged(g.fhPtImbalanceCharged)
74{
75 // cpy ctor
76
77}
78
79//_________________________________________________________________________
80AliAnaParticleHadronCorrelation & AliAnaParticleHadronCorrelation::operator = (const AliAnaParticleHadronCorrelation & source)
81{
82 // assignment operator
83
84 if(this == &source)return *this;
85 ((AliAnaBaseClass *)this)->operator=(source);
86
87 fDeltaPhiMaxCut = source.fDeltaPhiMaxCut ;
88 fDeltaPhiMinCut = source.fDeltaPhiMinCut ;
89
90 fhPhiCharged = source.fhPhiCharged ; fhPhiNeutral = source.fhPhiNeutral ;
91 fhEtaCharged = source.fhEtaCharged ; fhEtaNeutral = source.fhEtaNeutral ;
92 fhDeltaPhiCharged = source.fhDeltaPhiCharged ;
93 fhDeltaPhiNeutral = source.fhDeltaPhiNeutral ;
94 fhDeltaPhiNeutralPt = source.fhDeltaPhiNeutralPt ;
95 fhDeltaEtaCharged = source.fhDeltaEtaCharged ;
96 fhDeltaEtaNeutral = source.fhDeltaEtaNeutral ;
97 fhDeltaPhiChargedPt = source.fhDeltaPhiChargedPt ;
98
99 fhPtImbalanceNeutral = source.fhPtImbalanceNeutral ;
100 fhPtImbalanceCharged = source.fhPtImbalanceCharged ;
101
102 return *this;
103
104}
105
106//________________________________________________________________________
107TList * AliAnaParticleHadronCorrelation::GetCreateOutputObjects()
108{
109
110 // Create histograms to be saved in output file and
111 // store them in fOutputContainer
112 TList * outputContainer = new TList() ;
113 outputContainer->SetName("CorrelationHistos") ;
114
115 //Correlation with charged hadrons
116 if(GetReader()->IsCTSSwitchedOn()) {
117 fhPhiCharged = new TH2F
118 ("PhiCharged","#phi_{h^{#pm}} vs p_{T trigger}",
119 120,0,120,120,0,7);
120 fhPhiCharged->SetYTitle("#phi_{h^{#pm}} (rad)");
121 fhPhiCharged->SetXTitle("p_{T trigger} (GeV/c)");
122
123 fhEtaCharged = new TH2F
124 ("EtaCharged","#eta_{h^{#pm}} vs p_{T trigger}",
125 120,0,120,120,-1,1);
126 fhEtaCharged->SetYTitle("#eta_{h^{#pm}} (rad)");
127 fhEtaCharged->SetXTitle("p_{T trigger} (GeV/c)");
128
129 fhDeltaPhiCharged = new TH2F
130 ("DeltaPhiCharged","#phi_{trigger} - #phi_{h^{#pm}} vs p_{T trigger}",
131 200,0,120,200,0,6.4);
132 fhDeltaPhiCharged->SetYTitle("#Delta #phi");
133 fhDeltaPhiCharged->SetXTitle("p_{T trigger} (GeV/c)");
134
135 fhDeltaPhiChargedPt = new TH2F
136 ("DeltaPhiChargedPt","#phi_{trigger} - #phi_{#p^{#pm}i} vs p_{T h^{#pm}}",
137 200,0,120,200,0,6.4);
138 fhDeltaPhiChargedPt->SetYTitle("#Delta #phi");
139 fhDeltaPhiChargedPt->SetXTitle("p_{T h^{#pm}} (GeV/c)");
140
141 fhDeltaEtaCharged = new TH2F
142 ("DeltaEtaCharged","#eta_{trigger} - #eta_{h^{#pm}} vs p_{T trigger}",
143 200,0,120,200,-2,2);
144 fhDeltaEtaCharged->SetYTitle("#Delta #eta");
145 fhDeltaEtaCharged->SetXTitle("p_{T trigger} (GeV/c)");
146
147 fhPtImbalanceCharged =
148 new TH2F("CorrelationCharged","z_{trigger h^{#pm}} = p_{T h^{#pm}} / p_{T trigger}",
149 240,0.,120.,1000,0.,1.2);
150 fhPtImbalanceCharged->SetYTitle("z_{trigger h^{#pm}}");
151 fhPtImbalanceCharged->SetXTitle("p_{T trigger}");
152
153 outputContainer->Add(fhPhiCharged) ;
154 outputContainer->Add(fhEtaCharged) ;
155 outputContainer->Add(fhDeltaPhiCharged) ;
156 outputContainer->Add(fhDeltaEtaCharged) ;
157 outputContainer->Add(fhPtImbalanceCharged) ;
158 outputContainer->Add(fhDeltaPhiChargedPt) ;
159 } //Correlation with charged hadrons
160
161 //Correlation with neutral hadrons
162 if(GetReader()->IsEMCALSwitchedOn() || GetReader()->IsPHOSSwitchedOn()){
163
164 fhPhiNeutral = new TH2F
165 ("PhiNeutral","#phi_{#pi^{0}} vs p_{T trigger}",
166 120,0,120,120,0,7);
167 fhPhiNeutral->SetYTitle("#phi_{#pi^{0}} (rad)");
168 fhPhiNeutral->SetXTitle("p_{T trigger} (GeV/c)");
169
170 fhEtaNeutral = new TH2F
171 ("EtaNeutral","#eta_{#pi^{0}} vs p_{T trigger}",
172 120,0,120,120,-1,1);
173 fhEtaNeutral->SetYTitle("#eta_{#pi^{0}} (rad)");
174 fhEtaNeutral->SetXTitle("p_{T trigger} (GeV/c)");
175
176 fhDeltaPhiNeutral = new TH2F
177 ("DeltaPhiNeutral","#phi_{trigger} - #phi_{#pi^{0}} vs p_{T trigger}",
178 200,0,120,200,0,6.4);
179 fhDeltaPhiNeutral->SetYTitle("#Delta #phi");
180 fhDeltaPhiNeutral->SetXTitle("p_{T trigger} (GeV/c)");
181
182 fhDeltaPhiNeutralPt = new TH2F
183 ("DeltaPhiNeutralPt","#phi_{trigger} - #phi_{#pi^{0}} vs p_{T #pi^{0}}}",
184 200,0,120,200,0,6.4);
185 fhDeltaPhiNeutralPt->SetYTitle("#Delta #phi");
186 fhDeltaPhiNeutralPt->SetXTitle("p_{T trigger} (GeV/c)");
187
188 fhDeltaEtaNeutral = new TH2F
189 ("DeltaEtaNeutral","#eta_{trigger} - #eta_{#pi^{0}} vs p_{T trigger}",
190 200,0,120,200,-2,2);
191 fhDeltaEtaNeutral->SetYTitle("#Delta #eta");
192 fhDeltaEtaNeutral->SetXTitle("p_{T trigger} (GeV/c)");
193
194 fhPtImbalanceNeutral =
195 new TH2F("CorrelationNeutral","z_{trigger #pi} = p_{T #pi^{0}} / p_{T trigger}",
196 240,0.,120.,1000,0.,1.2);
197 fhPtImbalanceNeutral->SetYTitle("z_{trigger #pi^{0}}");
198 fhPtImbalanceNeutral->SetXTitle("p_{T trigger}");
199
200 outputContainer->Add(fhPhiNeutral) ;
201 outputContainer->Add(fhEtaNeutral) ;
202 outputContainer->Add(fhDeltaPhiNeutral) ;
203 outputContainer->Add(fhDeltaEtaNeutral) ;
204 outputContainer->Add(fhPtImbalanceNeutral) ;
205
206
207 //Keep neutral meson selection histograms if requiered
208 //Setting done in AliNeutralMesonSelection
209 if(GetNeutralMesonSelection()){
210 TList * nmsHistos = GetNeutralMesonSelection()->GetCreateOutputObjects() ;
211 cout<<"NMSHistos "<< nmsHistos<<endl;
212 if(GetNeutralMesonSelection()->AreNeutralMesonSelectionHistosKept())
213 for(Int_t i = 0; i < nmsHistos->GetEntries(); i++) outputContainer->Add(nmsHistos->At(i)) ;
214 }
215
216 }//Correlation with neutral hadrons
217
218 return outputContainer;
219}
220
221 //____________________________________________________________________________
222void AliAnaParticleHadronCorrelation::InitParameters()
223{
224
225 //Initialize the parameters of the analysis.
226
227 SetPtCutRange(2,300);
228 fDeltaPhiMinCut = 1.5 ;
229 fDeltaPhiMaxCut = 4.5 ;
230
231}
232
233//__________________________________________________________________
234void AliAnaParticleHadronCorrelation::Print(const Option_t * opt) const
235{
236
237 //Print some relevant parameters set for the analysis
238 if(! opt)
239 return;
240
241 Info("*** Print *** ", "%s %s", GetName(), GetTitle() ) ;
242 printf("pT Hadron > %2.2f\n", GetMinPt()) ;
243 printf("pT Hadron < %2.2f\n", GetMaxPt()) ;
244 printf("Phi trigger particle-Hadron < %3.2f\n", fDeltaPhiMaxCut) ;
245 printf("Phi trigger particle-Hadron > %3.2f\n", fDeltaPhiMinCut) ;
246
247
248}
249
250//____________________________________________________________________________
251void AliAnaParticleHadronCorrelation::MakeAnalysisFillAOD()
252{
253 //Particle-Hadron Correlation Analysis, fill AODs
254 if(GetDebug() > 1){
255 printf("Begin hadron correlation analysis, fill AODs \n");
256 printf("In particle branch aod entries %d\n", GetAODBranch()->GetEntries());
257 printf("In CTS aod entries %d\n", GetAODCTS()->GetEntries());
258 printf("In EMCAL aod entries %d\n", GetAODEMCAL()->GetEntries());
259 printf("In PHOS aod entries %d\n", GetAODPHOS()->GetEntries());
260 }
261
262 //Loop on stored AOD particles, trigger
263 Int_t naod = GetAODBranch()->GetEntriesFast();
264 for(Int_t iaod = 0; iaod < naod ; iaod++){
265 AliAODParticleCorrelation* particle = dynamic_cast<AliAODParticleCorrelation*> (GetAODBranch()->At(iaod));
266 //Make correlation with charged hadrons
267 if(GetReader()->IsCTSSwitchedOn() )
268 MakeChargedCorrelation(particle, (TSeqCollection*)GetAODCTS(),kFALSE);
269
270 //Make correlation with neutral pions
271 //Trigger particle in PHOS, correlation with EMCAL
272 if(particle->GetDetector()=="PHOS" && GetReader()->IsEMCALSwitchedOn() && GetAODEMCAL()->GetEntries() > 0)
273 MakeNeutralCorrelation(particle,(TSeqCollection*)GetAODEMCAL(),kFALSE);
274 //Trigger particle in EMCAL, correlation with PHOS
275 else if(particle->GetDetector()=="EMCAL" && GetReader()->IsPHOSSwitchedOn() && GetAODPHOS()->GetEntries() > 0)
276 MakeNeutralCorrelation(particle,(TSeqCollection*)GetAODPHOS(),kFALSE);
277 //Trigger particle in CTS, correlation with PHOS, EMCAL and CTS
278 else if(particle->GetDetector()=="CTS" ){
279 if(GetReader()->IsPHOSSwitchedOn() && GetAODPHOS()->GetEntries() > 0)
280 MakeNeutralCorrelation(particle,(TSeqCollection*)GetAODPHOS(),kFALSE);
281 if(GetReader()->IsEMCALSwitchedOn() && GetAODEMCAL()->GetEntries() > 0)
282 MakeNeutralCorrelation(particle,(TSeqCollection*)GetAODEMCAL(),kFALSE);
283 }
284
285 }//Aod branch loop
286
287 if(GetDebug() > 1) printf("End hadron correlation analysis, fill AODs \n");
288
289}
290
291//____________________________________________________________________________
292void AliAnaParticleHadronCorrelation::MakeAnalysisFillHistograms()
293{
294 //Particle-Hadron Correlation Analysis, fill AODs
295 if(GetDebug() > 1){
296 printf("Begin hadron correlation analysis, fill histograms \n");
297 printf("In particle branch aod entries %d\n", GetAODBranch()->GetEntries());
298 }
299
300 //Loop on stored AOD particles
301 Int_t naod = GetAODBranch()->GetEntriesFast();
302 for(Int_t iaod = 0; iaod < naod ; iaod++){
303 AliAODParticleCorrelation* particle = dynamic_cast<AliAODParticleCorrelation*> (GetAODBranch()->At(iaod));
304
305 if(GetDebug() > 1){
306 printf("Particle %d, In Track Refs entries %d\n", iaod, (particle->GetRefTracks())->GetEntries());
307 printf("Particle %d, In Cluster Refs entries %d\n",iaod, (particle->GetRefClusters())->GetEntries());
308 }
309
310 //Make correlation with charged hadrons
311 if((particle->GetRefTracks())->GetEntries() > 0)
312 MakeChargedCorrelation(particle, (TSeqCollection*) (particle->GetRefTracks()),kTRUE);
313
314 //Make correlation with neutral pions
315 if((particle->GetRefClusters())->GetEntries() > 0)
316 MakeNeutralCorrelation(particle, (TSeqCollection*) (particle->GetRefClusters()), kTRUE);
317
318 }//Aod branch loop
319
320 if(GetDebug() > 1) printf("End hadron correlation analysis, fill histograms \n");
321
322}
323
324//____________________________________________________________________________
325void AliAnaParticleHadronCorrelation::MakeChargedCorrelation(AliAODParticleCorrelation *aodParticle, TSeqCollection* pl, const Bool_t bFillHisto)
326{
327 // Charged Hadron Correlation Analysis
328 if(GetDebug() > 1)printf("Make trigger particle - charged hadron correlation \n");
329
330 Double_t ptTrig = aodParticle->Pt();
331 Double_t phiTrig = aodParticle->Phi();
332 Double_t pt = -100.;
333 Double_t rat = -100.;
334 Double_t phi = -100. ;
335 Double_t eta = -100. ;
336 Double_t p[3];
337
338 //Track loop, select tracks with good pt, phi and fill AODs or histograms
339 for(Int_t ipr = 0;ipr < pl->GetEntries() ; ipr ++ ){
340 AliAODTrack * track = dynamic_cast<AliAODTrack *>(pl->At(ipr)) ;
341 track->GetPxPyPz(p) ;
342 TLorentzVector mom(p[0],p[1],p[2],0);
343 pt = mom.Pt();
344 eta = mom.Eta();
345 phi = mom.Phi() ;
346 if(phi<0) phi+=TMath::TwoPi();
347 rat = pt/ptTrig ;
348
349 if(IsFidutialCutOn()){
350 Bool_t in = GetFidutialCut()->IsInFidutialCut(mom,"CTS") ;
351 if(! in ) continue ;
352 }
353
354 //Select only hadrons in pt range
355 if(pt < GetMinPt() || pt > GetMaxPt()) continue ;
356
357 if(GetDebug() > 2)
358 printf("charged hadron: pt %f, phi %f, phi trigger %f. Cuts: delta phi min %2.2f, max%2.2f, pT min %2.2f \n",
359 pt,phi,phiTrig,fDeltaPhiMinCut, fDeltaPhiMaxCut, GetMinPt());
360
361 if(bFillHisto){
362 // Fill Histograms
363 fhEtaCharged->Fill(ptTrig,eta);
364 fhPhiCharged->Fill(ptTrig,phi);
365 fhDeltaEtaCharged->Fill(ptTrig,aodParticle->Eta()-eta);
366 fhDeltaPhiCharged->Fill(ptTrig,phiTrig-phi);
367 fhDeltaPhiChargedPt->Fill(pt,phiTrig-phi);
368 //Selection within angular range
369 if(((phiTrig-phi)> fDeltaPhiMinCut) && ((phiTrig-phi)<fDeltaPhiMaxCut) ){
370 if(GetDebug() > 2 ) printf("Selected charge for momentum imbalance: pt %2.2f, phi %2.2f, eta %2.2f ",pt,phi,eta);
371 fhPtImbalanceCharged->Fill(ptTrig,rat);
372 }
373 }
374 else{
375 //Fill AODs
376 aodParticle->AddTrack(track);
377
378 }//aod particle loop
379 }// track loop
380
381}
382//____________________________________________________________________________
383void AliAnaParticleHadronCorrelation::MakeNeutralCorrelation(AliAODParticleCorrelation * aodParticle,TSeqCollection* pl, const Bool_t bFillHisto)
384{
385 // Neutral Pion Correlation Analysis
386 if(GetDebug() > 1) printf("Make trigger particle - neutral hadron correlation \n");
387
388 Double_t pt = -100.;
389 Double_t rat = -100.;
390 Double_t phi = -100. ;
391 Double_t eta = -100. ;
392 Double_t ptTrig = aodParticle->Pt();
393 Double_t phiTrig = aodParticle->Phi();
394 Double_t etaTrig = aodParticle->Eta();
395
396 TLorentzVector gammai;
397 TLorentzVector gammaj;
398
399 Double_t vertex[] = {0,0,0};
400
401 if(!GetReader()->GetDataType()== AliCaloTrackReader::kMC) GetReader()->GetVertex(vertex);
402
403 //Cluster loop, select pairs with good pt, phi and fill AODs or histograms
404 for(Int_t iclus = 0;iclus < pl->GetEntries() ; iclus ++ ){
405 AliAODCaloCluster * calo = dynamic_cast< AliAODCaloCluster *>(pl->At(iclus)) ;
406 if(!bFillHisto){
407
408 //Cluster selection, not charged, with photon or pi0 id and in fidutial cut
409 Int_t pdg=0;
410 if(!SelectCluster(calo, vertex, gammai, pdg)) continue ;
411
412 if(GetDebug() > 2)
413 printf("neutral cluster: pt %f, phi %f, phi trigger %f. Cuts: delta phi min %2.2f, max%2.2f, pT min %2.2f \n",
414 gammai.Pt(),gammai.Phi(),phiTrig,fDeltaPhiMinCut, fDeltaPhiMaxCut, GetMinPt());
415
416 //2 gamma overlapped, found with PID
417 if(pdg == AliCaloPID::kPi0){
418
419 //Select only hadrons in pt range
420 if(gammai.Pt() < GetMinPt() || gammai.Pt() > GetMaxPt()) continue ;
421
422 aodParticle->AddCluster(calo);
423 if(GetDebug() > 2) printf("Correlated with selected pi0 (pid): pt %f, phi %f",gammai.Pt(),gammai.Phi());
424
425 }// pdg = 111
426
427 //Make invariant mass analysis
428 else if(pdg == AliCaloPID::kPhoton){
429 //Search the photon companion in case it comes from a Pi0 decay
430 //Apply several cuts to select the good pair;
431 for(Int_t jclus = iclus+1; jclus < pl->GetEntries() ; jclus ++ ){
432 AliAODCaloCluster * calo2 = dynamic_cast< AliAODCaloCluster *>(pl->At(jclus)) ;
433
434 //Cluster selection, not charged with photon or pi0 id and in fidutial cut
435 Int_t pdgj=0;
436 if(!SelectCluster(calo2,vertex, gammaj, pdgj)) continue ;
437
438 if(pdgj == AliCaloPID::kPhoton ){
439
440 if((gammai+gammaj).Pt() < GetMinPt() || (gammai+gammaj).Pt() > GetMaxPt()) continue ;
441
442 //Select good pair (aperture and invariant mass)
443 if(GetNeutralMesonSelection()->SelectPair(gammai, gammaj)){
444
445 if(GetDebug() > 2 ) printf("Neutral Hadron Correlation: AOD Selected gamma pair: pt %2.2f, phi %2.2f, eta %2.2f, M %2.3f",
446 (gammai+gammaj).Pt(),(gammai+gammaj).Phi(),(gammai+gammaj).Eta(), (gammai+gammaj).M());
447 Int_t labels[]={calo->GetLabel(0),calo2->GetLabel(0)};
448 Float_t pid[]={0,0,0,0,0,0,1,0,0,0,0,0,0};//Pi0 weight 1
449 Float_t pos[]={(gammai+gammaj).X(), (gammai+gammaj).Y(), (gammai+gammaj).Z()};
450
451 AliAODCaloCluster *caloCluster = new AliAODCaloCluster(0,2,labels,(gammai+gammaj).E(), pos, pid,calo->GetType(),0);
452 aodParticle->AddCluster(caloCluster);
453 }//Pair selected
454 }//if pair of gammas
455 }//2nd loop
456 }// if pdg = 22
457 }// Fill AODs
458 else{ //Fill histograms
459
460 calo->GetMomentum(gammai,vertex);//Assume that come from vertex in straight line
461 pt = gammai.Pt();
462
463 if(pt < GetMinPt() || pt > GetMaxPt()) continue ;
464
465 rat = pt/ptTrig ;
466 phi = gammai.Phi() ;
467 eta = gammai.Eta() ;
468
469 if(GetDebug() > 2 ) printf("Neutral Hadron Correlation: Histograms selected gamma pair: pt %2.2f, phi %2.2f, eta %2.2f",pt,phi,eta);
470
471 fhEtaNeutral->Fill(ptTrig,eta);
472 fhPhiNeutral->Fill(ptTrig,phi);
473 fhDeltaEtaNeutral->Fill(ptTrig,etaTrig-eta);
474 fhDeltaPhiNeutral->Fill(ptTrig,phiTrig-phi);
475 fhDeltaPhiNeutralPt->Fill(pt,phiTrig-phi);
476 //Selection within angular range
477 if(((phiTrig-phi)> fDeltaPhiMinCut) && ((phiTrig-phi)<fDeltaPhiMaxCut) ){
478 if(GetDebug() > 2 ) printf("Selected neutral for momentum imbalance: pt %2.2f, phi %2.2f, eta %2.2f ",pt,phi,eta);
479 fhPtImbalanceNeutral->Fill(ptTrig,rat);
480 }
481 }//Fill histograms
482 }//1st loop
483
484}
485
486//____________________________________________________________________________
487Bool_t AliAnaParticleHadronCorrelation::SelectCluster(AliAODCaloCluster * calo, Double_t *vertex, TLorentzVector & mom, Int_t & pdg){
488 //Select cluster depending on its pid and acceptance selections
489
490 //Skip matched clusters with tracks
491 if(calo->GetNTracksMatched() > 0) {
492 return kFALSE;}
493
494 //Check PID
495 calo->GetMomentum(mom,vertex);//Assume that come from vertex in straight line
496 pdg = AliCaloPID::kPhoton;
497 if(IsCaloPIDOn()){
498 //Get most probable PID, 2 options check PID weights (in MC this option is mandatory)
499 //or redo PID, recommended option for EMCal.
500 TString detector = "";
501 if(calo->IsPHOSCluster()) detector= "PHOS";
502 else if(calo->IsEMCALCluster()) detector= "EMCAL";
503
504 if(!IsCaloPIDRecalculationOn() || GetReader()->GetDataType() == AliCaloTrackReader::kMC )
505 pdg = GetCaloPID()->GetPdg(detector,calo->PID(),mom.E());//PID with weights
506 else
507 pdg = GetCaloPID()->GetPdg(detector,mom,calo->GetM02(),0,0,0,0);//PID recalculated
508
509 if(GetDebug() > 1) printf("PDG of identified particle %d\n",pdg);
510
511 //If it does not pass pid, skip
512 if(pdg != AliCaloPID::kPhoton || pdg != AliCaloPID::kPi0) {
513 return kFALSE ;
514 }
515 }
516
517 //Check acceptance selection
518 if(IsFidutialCutOn()){
519 Bool_t in = kFALSE;
520 if(calo->IsPHOSCluster())
521 in = GetFidutialCut()->IsInFidutialCut(mom,"PHOS") ;
522 else if(calo->IsEMCALCluster())
523 in = GetFidutialCut()->IsInFidutialCut(mom,"EMCAL") ;
524 if(! in ) { return kFALSE ;}
525 }
526
527 if(GetDebug() > 1) printf("Correlation photon selection cuts passed: pT %3.2f, pdg %d\n",mom.Pt(), pdg);
528
529 return kTRUE;
530
531 }