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eb10d583 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: Yvonne Pachmayer <pachmay@physi.uni-heidelberg.de> * | |
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 | // | |
16 | // The task: | |
17 | // stores TRD PID quantities in a Tree | |
18 | // output can then be used for e.g. parameter creation | |
19 | // | |
20 | // Author: | |
21 | // Yvonne Pachmayer <pachmay@physi.uni-heidelberg.de> | |
22 | // | |
23 | ||
24 | ||
25 | #include "AliTRDPIDTree.h" | |
26 | #include "TChain.h" | |
27 | #include "AliAnalysisManager.h" | |
28 | #include "AliESDEvent.h" | |
29 | #include "AliMCEvent.h" | |
30 | #include "AliPID.h" | |
31 | #include "AliESDtrack.h" | |
32 | #include "AliPIDResponse.h" | |
33 | #include "AliInputEventHandler.h" | |
34 | #include "AliESDInputHandler.h" | |
35 | #include "AliESDv0KineCuts.h" | |
36 | #include "AliESDv0.h" | |
37 | #include "AliCentrality.h" | |
38 | #include "AliTRDgeometry.h" | |
39 | #include "TTree.h" | |
40 | ||
41 | class TCanvas; | |
42 | class TAxis; | |
43 | class TFile; | |
44 | class TStyle; | |
45 | class TString; | |
46 | class TH1F; | |
47 | class TH2D; | |
48 | class THnSparse; | |
49 | class TLegend; | |
50 | class TVirtualFitter; | |
51 | class AliESDtrackCuts; | |
52 | class AliStack; | |
53 | class AliMCParticle; | |
54 | ||
55 | ||
56 | using namespace std; | |
57 | ||
58 | ClassImp(AliTRDPIDTree) | |
59 | ||
60 | Double_t AliTRDPIDTree::fgMinLayer = 1.; | |
61 | ||
62 | //________________________________________________________________________ | |
63 | AliTRDPIDTree::AliTRDPIDTree(const char *name) | |
64 | : AliAnalysisTaskSE(name), fV0tags(0x0), fV0cuts(0x0), fV0electrons(0x0), fV0pions(0x0), fV0protons(0x0), | |
65 | fESDEvent(0), fMCEvent(0), fMCStack(0), fTreeTRDPID(0), fPIDResponse(0), fOutputContainer(0), fESDtrackCuts(0), | |
66 | fESDtrackCutsV0(0), fListQATRD(0x0), fListQATRDV0(0x0), | |
67 | fNumTagsStored(0), fCollisionSystem(3), | |
68 | fpdg(0), frun(0), frunnumber(0), fcentrality(0), fTRDNtracklets(0), fTRDNcls(0), fTRDntracklets(0), fTRDntrackletsPID(0), | |
370f5346 | 69 | fTRDtheta(0), fTRDsignal(0), fTRDnclsdEdx(0), fTRDnch(0), fPDG(0), fPDGTRUE(0), fChi2(0), fhtrackCuts(0), fhArmenteros(0) |
eb10d583 | 70 | { |
71 | ||
72 | // | |
73 | // Constructor | |
74 | // | |
75 | DefineInput(0, TChain::Class()); | |
76 | DefineOutput(1, TTree::Class()); | |
77 | DefineOutput(2, TList::Class()); | |
78 | ||
79 | } | |
80 | ||
81 | ||
82 | //_________________________________________________ | |
83 | AliTRDPIDTree::~AliTRDPIDTree() | |
84 | { | |
85 | ||
86 | // | |
87 | // Destructor | |
88 | // | |
89 | ||
90 | delete fV0cuts; | |
91 | delete fV0electrons; | |
92 | delete fV0pions; | |
93 | delete fV0protons; | |
94 | delete fV0tags; | |
95 | fV0tags = 0; | |
96 | fNumTagsStored = 0; | |
97 | } | |
98 | ||
99 | ||
100 | //________________________________________________________________________ | |
101 | void AliTRDPIDTree::UserCreateOutputObjects() | |
102 | { | |
103 | // | |
104 | // Definition of user output ntuple and histogram file | |
105 | // | |
106 | ||
107 | ||
108 | AliInputEventHandler* inputHandler = dynamic_cast<AliInputEventHandler*>(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()); | |
109 | if (!inputHandler) | |
110 | printf("Inputhandler not available \n"); | |
111 | else | |
112 | fPIDResponse = inputHandler->GetPIDResponse(); | |
113 | ||
114 | // V0 Kine cuts | |
115 | fV0cuts = new AliESDv0KineCuts(); | |
116 | ||
117 | // V0 PID Obj arrays | |
118 | fV0electrons = new TObjArray; | |
119 | fV0pions = new TObjArray; | |
120 | fV0protons = new TObjArray; | |
121 | ||
122 | ||
123 | ||
124 | OpenFile(1); | |
125 | fTreeTRDPID = new TTree("TreeTRDPID", "TRD PID"); | |
126 | fTreeTRDPID->Branch("run", &frunnumber); | |
127 | fTreeTRDPID->Branch("centrality", &fcentrality); | |
128 | fTreeTRDPID->Branch("TRDNtracklets",&fTRDNtracklets); | |
129 | fTreeTRDPID->Branch("TRDslices[48]",fTRDslices); | |
130 | fTreeTRDPID->Branch("TRDMomentum[6]",fTRDMomentum); | |
131 | fTreeTRDPID->Branch("TRDNcls",&fTRDNcls); | |
132 | fTreeTRDPID->Branch("TRDntracklets",&fTRDntracklets); | |
133 | fTreeTRDPID->Branch("TRDntrackletsPID",&fTRDntrackletsPID); | |
134 | fTreeTRDPID->Branch("TRDphi[6]",fTRDphi); | |
135 | fTreeTRDPID->Branch("TRDY[6]",fTRDY); | |
136 | fTreeTRDPID->Branch("TRDtheta",&fTRDtheta); | |
137 | fTreeTRDPID->Branch("TRDsignal",&fTRDsignal); | |
138 | fTreeTRDPID->Branch("TRDnclsdEdx",&fTRDnclsdEdx); | |
139 | fTreeTRDPID->Branch("TRDnch",&fTRDnch); | |
140 | fTreeTRDPID->Branch("NSigmaTPC[3]",fNSigmaTPC); | |
141 | fTreeTRDPID->Branch("NSigmaTOF[3]",fNSigmaTOF); | |
142 | fTreeTRDPID->Branch("PDG",&fPDG); | |
143 | fTreeTRDPID->Branch("PDGTRUE",&fPDGTRUE); | |
144 | fTreeTRDPID->Branch("DCA[2]",fDCA); | |
145 | fTreeTRDPID->Branch("Chi2",&fChi2); | |
370f5346 | 146 | fTreeTRDPID->Branch("TRDsigma[5]",fsigmaTRD); |
147 | fTreeTRDPID->Branch("TRDdelta[5]",fdeltaTRD); | |
148 | fTreeTRDPID->Branch("TRDratio[5]",fratioTRD); | |
eb10d583 | 149 | |
150 | PostData(1,fTreeTRDPID); | |
151 | ||
152 | ||
153 | OpenFile(2); | |
154 | fListQATRD=new TList; | |
155 | fListQATRD->SetOwner(); | |
156 | fListQATRDV0=new TList; | |
157 | fListQATRDV0->SetOwner(); | |
158 | fListQATRDV0->SetName("V0decay"); | |
159 | fListQATRD->Add(fListQATRDV0); | |
160 | ||
161 | SetupV0qa(); | |
162 | ||
163 | fhtrackCuts = new TH1F("fhtrackCuts","TrackEventCuts QA",10,-0.5,9.5); | |
164 | fListQATRD->Add(fhtrackCuts); | |
165 | ||
166 | PostData(2,fListQATRD); | |
167 | ||
168 | ||
169 | } | |
170 | ||
171 | ||
172 | //_____________________________________________________________________________ | |
173 | void AliTRDPIDTree::UserExec(Option_t *) | |
174 | { | |
175 | // | |
176 | //calls the Process function | |
177 | // | |
178 | ||
179 | AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()); | |
180 | ||
181 | if (!esdH) { | |
182 | printf("ERROR: Could not get ESDInputHandler \n"); | |
183 | } | |
184 | else fESDEvent = esdH->GetEvent(); | |
185 | ||
186 | // If MC, forward MCevent | |
187 | fMCEvent = dynamic_cast<AliMCEvent*>(MCEvent()); | |
188 | fMCStack=NULL; | |
189 | if(fMCEvent){ | |
190 | fMCStack = fMCEvent->Stack(); | |
191 | } | |
192 | ||
193 | FillV0PIDlist(); | |
194 | // | |
195 | Process(fESDEvent, fMCEvent); | |
196 | // | |
197 | ||
198 | PostData(1,fTreeTRDPID); | |
199 | PostData(2,fListQATRD); | |
200 | ||
201 | // Clear the V0 PID arrays | |
202 | ClearV0PIDlist(); | |
203 | ||
204 | } | |
205 | ||
206 | ||
207 | ||
208 | //________________________________________________________________________ | |
209 | void AliTRDPIDTree::Process(AliESDEvent *const esdEvent, AliMCEvent *const mcEvent) | |
210 | { | |
211 | // | |
212 | //called for each event | |
213 | // | |
214 | ||
215 | if (!esdEvent) { | |
216 | Printf("ERROR: esdEvent not available"); | |
217 | return; | |
218 | } | |
219 | ||
220 | if (!mcEvent) { | |
221 | // Printf("ERROR: mcEvent not available"); | |
222 | // return; | |
223 | } | |
224 | ||
225 | if (!fPIDResponse ) { | |
226 | Printf("ERROR: No PIDresponse and/or v0KineCuts!"); | |
227 | return; | |
228 | } | |
229 | ||
230 | Float_t centralityFper=99; | |
231 | ||
232 | AliCentrality *esdCentrality = esdEvent->GetCentrality(); | |
233 | centralityFper = esdCentrality->GetCentralityPercentile("V0M"); | |
234 | ||
235 | ||
236 | const AliESDVertex* fESDEventvertex = esdEvent->GetPrimaryVertexTracks(); | |
237 | if (!fESDEventvertex) | |
238 | return; | |
239 | ||
240 | Int_t ncontr = fESDEventvertex->GetNContributors(); | |
241 | ||
242 | if (ncontr <= 0) return; | |
243 | frunnumber = fESDEvent->GetRunNumber(); | |
244 | ||
245 | // - Begin: track loop for electrons from V0 - | |
246 | for(Int_t itrack = 0; itrack < fV0electrons->GetEntries(); itrack++){ | |
247 | // AliVTrack *track=(AliVTrack*)fV0electrons->At(itrack); | |
248 | AliESDtrack *track=(AliESDtrack*)fV0electrons->At(itrack); | |
249 | ||
250 | fpdg=11; | |
251 | FillTree(track, fpdg, frun, centralityFper); | |
252 | ||
253 | } // - End: track loop for electrons from V0 - | |
254 | ||
255 | // - Begin: track loop for pions from V0 - | |
256 | for(Int_t itrack = 0; itrack < fV0pions->GetEntries(); itrack++){ | |
257 | // AliVTrack *track=(AliVTrack*)fV0pions->At(itrack); | |
258 | AliESDtrack *track=(AliESDtrack*)fV0pions->At(itrack); | |
259 | fpdg=211; | |
260 | FillTree(track, fpdg, frun, centralityFper); | |
261 | } | |
262 | ||
263 | // - Begin: track loop for protons from V0 - | |
264 | for(Int_t itrack = 0; itrack < fV0protons->GetEntries(); itrack++){ | |
265 | // AliVTrack *track=(AliVTrack*)fV0protons->At(itrack); | |
266 | AliESDtrack *track=(AliESDtrack*)fV0protons->At(itrack); | |
267 | fpdg=2212; | |
268 | FillTree(track, fpdg, frun, centralityFper); | |
269 | } | |
270 | ||
271 | ||
272 | ||
273 | PostData(1,fTreeTRDPID); | |
274 | PostData(2,fListQATRD); | |
275 | ||
276 | } | |
277 | ||
278 | //________________________________________________________________________ | |
279 | void AliTRDPIDTree::FillTree(AliESDtrack *track, Int_t pdgfromv0, Int_t runnumber, Int_t centralityvalue) | |
280 | { | |
281 | // | |
282 | // Fill tree with track and event variables for e, pi, proton from V0 candidates | |
283 | // | |
284 | ||
285 | // global event and track cuts | |
286 | if(!PassTrackCuts(track)) return; | |
287 | ||
288 | // track cuts: | |
289 | Int_t ntrackletstracking=track->GetTRDntracklets(); | |
290 | if(ntrackletstracking<fgMinLayer) return; | |
291 | Int_t trdnch = track->GetTRDNchamberdEdx(); // only available for p-Pb up to now | |
292 | // if(trdnch<1) return; | |
293 | ||
294 | ||
295 | ||
296 | // check if TOF can provide PID (if not true return) | |
297 | UInt_t status = track->GetStatus(); | |
298 | Bool_t hasTOFout = status&AliESDtrack::kTOFout; | |
299 | Bool_t hasTOFtime = status&AliESDtrack::kTIME; | |
370f5346 | 300 | if(!(hasTOFout && hasTOFtime)) return; |
eb10d583 | 301 | |
302 | // add kaons? | |
41a6c5e0 | 303 | Double_t nSigmaTPC = 0; |
304 | Double_t nSigmaTOF = 0; | |
eb10d583 | 305 | |
306 | if(TMath::Abs(pdgfromv0)==11){ | |
307 | nSigmaTPC=fPIDResponse->NumberOfSigmasTPC(track,AliPID::kElectron); | |
308 | nSigmaTOF=fPIDResponse->NumberOfSigmasTOF(track,AliPID::kElectron); | |
309 | } | |
310 | if(TMath::Abs(pdgfromv0)==211){ | |
311 | nSigmaTPC=fPIDResponse->NumberOfSigmasTPC(track,AliPID::kPion); | |
312 | nSigmaTOF=fPIDResponse->NumberOfSigmasTOF(track,AliPID::kPion); | |
313 | } | |
314 | if(TMath::Abs(pdgfromv0)==2212){ | |
315 | nSigmaTPC=fPIDResponse->NumberOfSigmasTPC(track,AliPID::kProton); | |
316 | nSigmaTOF=fPIDResponse->NumberOfSigmasTOF(track,AliPID::kProton); | |
317 | } | |
318 | ||
319 | if(nSigmaTPC>3||nSigmaTPC<-3){ | |
320 | return; | |
321 | } | |
322 | ||
323 | if(nSigmaTOF>3||nSigmaTOF<-3){ | |
324 | return; | |
325 | } | |
326 | ||
327 | frun=runnumber; | |
328 | ||
329 | Int_t charge = track->Charge(); | |
330 | fPDG=pdgfromv0*charge; | |
331 | fcentrality = centralityvalue; | |
332 | fTRDntracklets = ntrackletstracking; | |
333 | fTRDntrackletsPID = track->GetTRDntrackletsPID(); | |
334 | ||
335 | fTRDNcls=track->GetTRDncls(); | |
336 | fTRDtheta=track->Theta()-0.5*TMath::Pi(); | |
337 | fChi2=track->GetTRDchi2(); | |
338 | ||
339 | fTRDsignal=track->GetTRDsignal(); // truncated mean signal | |
340 | fTRDnclsdEdx=track->GetTRDNclusterdEdx(); // number of clusters dedx | |
341 | fTRDnch=trdnch; // number of chambers dedx | |
342 | ||
343 | track->GetImpactParameters(fDCA[0],fDCA[1]); | |
344 | ||
345 | fNSigmaTPC[0]=fPIDResponse->NumberOfSigmasTPC(track,AliPID::kElectron); | |
346 | fNSigmaTPC[1]=fPIDResponse->NumberOfSigmasTPC(track,AliPID::kPion); | |
347 | fNSigmaTPC[2]=fPIDResponse->NumberOfSigmasTPC(track,AliPID::kProton); | |
348 | fNSigmaTOF[0]=fPIDResponse->NumberOfSigmasTOF(track,AliPID::kElectron); | |
349 | fNSigmaTOF[1]=fPIDResponse->NumberOfSigmasTOF(track,AliPID::kPion); | |
350 | fNSigmaTOF[2]=fPIDResponse->NumberOfSigmasTOF(track,AliPID::kProton); | |
351 | ||
352 | Int_t ntracklets=0; | |
353 | for(Int_t iPl=0;iPl<AliVTrack::kTRDnPlanes;iPl++){ | |
354 | ||
355 | fTRDphi[iPl]=GetPhi(track,iPl,fTRDY[iPl]); | |
356 | Float_t dEdx=0; | |
357 | fTRDMomentum[iPl]= track->GetTRDmomentum(iPl); | |
358 | for(int isl= 0; isl<= 7;isl++){ | |
359 | fTRDslices[iPl*8+isl]=track->GetTRDslice(iPl,isl); | |
360 | Double_t sig=track->GetTRDslice(iPl,isl); | |
361 | if(sig>0){ | |
362 | dEdx+=sig; | |
363 | } | |
364 | } | |
365 | if(dEdx>0){ | |
366 | ntracklets++; | |
367 | } | |
368 | } | |
369 | fTRDNtracklets=ntracklets; | |
370 | ||
371 | fPDGTRUE=0; | |
372 | if(fMCStack){ | |
373 | Int_t label=track->GetLabel(); | |
374 | if(label>=0){ | |
375 | TParticle *part=fMCStack->Particle(label); | |
376 | if(part){ | |
377 | fPDGTRUE=part->GetPdgCode(); | |
378 | if(TMath::Abs(fPDGTRUE)==11)fPDGTRUE=-fPDGTRUE; // switch signs (particle code says 11 for e- and -11 for e+) | |
379 | } | |
380 | } | |
381 | } | |
382 | ||
eb10d583 | 383 | AliPID::EParticleType types[]={AliPID::kElectron, AliPID::kMuon, AliPID::kPion, AliPID::kKaon, AliPID::kProton}; |
384 | for(Int_t itrdpid=0; itrdpid<5; itrdpid++){ | |
370f5346 | 385 | fsigmaTRD[itrdpid]= fPIDResponse->NumberOfSigmas(AliPIDResponse::kTRD, track, types[itrdpid]); // (signal-expsig)/(sigma), where sigma = mean*resolution |
386 | fdeltaTRD[itrdpid]= fPIDResponse->GetSignalDelta(AliPIDResponse::kTRD, track, types[itrdpid]); // signal/(expsig) | |
387 | fratioTRD[itrdpid]= fPIDResponse->GetSignalDelta(AliPIDResponse::kTRD, track, types[itrdpid], kTRUE); // difference signal to theor. value divided by resolution | |
eb10d583 | 388 | } |
389 | ||
390 | ||
391 | fTreeTRDPID->Fill(); | |
392 | ||
393 | } | |
394 | ||
395 | //________________________________________________________________________ | |
396 | Int_t AliTRDPIDTree::CompareFloat(Float_t f1, Float_t f2) const | |
397 | { | |
398 | // | |
399 | //compares if the Float_t f1 is equal with f2 and returns 1 if true and 0 if false | |
400 | // | |
401 | Float_t precision = 0.00001; | |
402 | if (((f1 - precision) < f2) && | |
403 | ((f1 + precision) > f2)) | |
404 | { | |
405 | return 1; | |
406 | } | |
407 | else | |
408 | { | |
409 | return 0; | |
410 | } | |
411 | } | |
412 | ||
413 | ||
414 | //________________________________________________________________________ | |
415 | void AliTRDPIDTree::Terminate(const Option_t *) | |
416 | { | |
417 | // | |
418 | // Terminate function | |
419 | // | |
420 | ||
421 | ||
422 | } | |
423 | ||
424 | ||
425 | //______________________________________________________________________________ | |
426 | void AliTRDPIDTree::FillV0PIDlist(){ | |
427 | ||
428 | // | |
429 | // Fill the PID object arrays holding the pointers to identified particle tracks | |
430 | // | |
431 | ||
432 | // Dynamic cast to ESD events (DO NOTHING for AOD events) | |
433 | AliESDEvent *event = dynamic_cast<AliESDEvent *>(InputEvent()); | |
434 | if ( !event ) return; | |
435 | ||
436 | if(IsPbPb()) { | |
437 | fV0cuts->SetMode(AliESDv0KineCuts::kPurity,AliESDv0KineCuts::kPbPb); | |
438 | } | |
439 | else { | |
440 | fV0cuts->SetMode(AliESDv0KineCuts::kPurity,AliESDv0KineCuts::kPP); | |
441 | } | |
442 | ||
443 | ||
444 | // V0 selection | |
445 | // set event | |
446 | fV0cuts->SetEvent(event); | |
447 | ||
448 | const Int_t numTracks = event->GetNumberOfTracks(); | |
449 | fV0tags = new Int_t[numTracks]; | |
450 | for (Int_t i = 0; i < numTracks; i++) | |
451 | fV0tags[i] = 0; | |
452 | ||
453 | fNumTagsStored = numTracks; | |
454 | ||
455 | // loop over V0 particles | |
456 | for(Int_t iv0=0; iv0<event->GetNumberOfV0s();iv0++){ | |
457 | ||
458 | ||
459 | AliESDv0 *v0 = (AliESDv0 *) event->GetV0(iv0); | |
460 | ||
461 | if(!v0) continue; | |
462 | if(v0->GetOnFlyStatus()) continue; | |
463 | // Get the particle selection | |
464 | Bool_t foundV0 = kFALSE; | |
465 | Int_t pdgV0, pdgP, pdgN; | |
466 | foundV0 = fV0cuts->ProcessV0(v0, pdgV0, pdgP, pdgN); | |
467 | if(!foundV0) continue; | |
468 | Int_t iTrackP = v0->GetPindex(); // positive track | |
469 | Int_t iTrackN = v0->GetNindex(); // negative track | |
470 | ||
471 | // v0 Armenteros plot (QA) | |
472 | Float_t armVar[2] = {0.0,0.0}; | |
473 | fV0cuts->Armenteros(v0, armVar); | |
474 | ||
475 | if(fListQATRDV0&&fhArmenteros)fhArmenteros->Fill(armVar[0],armVar[1]); | |
476 | ||
477 | // fill the Object arrays | |
478 | // positive particles | |
479 | if( pdgP == -11){ | |
480 | fV0electrons->Add((AliVTrack*)event->GetTrack(iTrackP)); | |
481 | fV0tags[iTrackP] = 11; | |
482 | } | |
483 | else if( pdgP == 211){ | |
484 | fV0pions->Add((AliVTrack*)event->GetTrack(iTrackP)); | |
485 | fV0tags[iTrackP] = 211; | |
486 | } | |
487 | else if( pdgP == 2212){ | |
488 | fV0protons->Add((AliVTrack*)event->GetTrack(iTrackP)); | |
489 | fV0tags[iTrackP] = 2212; | |
490 | } | |
491 | ||
492 | // negative particles | |
493 | if( pdgN == 11){ | |
494 | fV0electrons->Add((AliVTrack*)event->GetTrack(iTrackN)); | |
495 | fV0tags[iTrackN] = -11; | |
496 | } | |
497 | else if( pdgN == -211){ | |
498 | fV0pions->Add((AliVTrack*)event->GetTrack(iTrackN)); | |
499 | fV0tags[iTrackN] = -211; | |
500 | } | |
501 | else if( pdgN == -2212){ | |
502 | fV0protons->Add((AliVTrack*)event->GetTrack(iTrackN)); | |
503 | fV0tags[iTrackN] = -2212; | |
504 | } | |
505 | ||
506 | ||
507 | } | |
508 | } | |
509 | ||
510 | //______________________________________________________________________________ | |
511 | Int_t AliTRDPIDTree::GetV0tag(Int_t trackIndex) const | |
512 | { | |
513 | // | |
514 | // Get the tag for the corresponding trackIndex. Returns -99 in case of invalid index/tag list. | |
515 | // | |
516 | ||
517 | ||
518 | ||
519 | if (trackIndex < 0 || trackIndex >= fNumTagsStored || !fV0tags) return -99; | |
520 | else | |
521 | { | |
522 | return fV0tags[trackIndex]; | |
523 | } | |
524 | } | |
525 | ||
526 | //______________________________________________________________________________ | |
527 | void AliTRDPIDTree::ClearV0PIDlist(){ | |
528 | ||
529 | // | |
530 | // Clear the PID object arrays | |
531 | // | |
532 | ||
533 | fV0electrons->Clear(); | |
534 | fV0pions->Clear(); | |
535 | fV0protons->Clear(); | |
536 | ||
41a6c5e0 | 537 | delete[] fV0tags; |
eb10d583 | 538 | fV0tags = 0; |
539 | ||
540 | fNumTagsStored = 0; | |
541 | } | |
542 | ||
543 | ||
544 | //______________________________________________________________________________ | |
545 | void AliTRDPIDTree::SetupV0qa() | |
546 | { | |
547 | // | |
548 | // Create the qa objects for V0 Kine cuts | |
549 | // | |
550 | ||
551 | fhArmenteros = new TH2F("fhArmenteros","Armenteros plot",200,-1.,1.,200,0.,0.4); | |
552 | fListQATRDV0->Add(fhArmenteros); | |
553 | ||
554 | } | |
555 | ||
556 | //________________________________________________________________________ | |
557 | Double_t AliTRDPIDTree::GetPhi(AliESDtrack *const fTrack,Int_t iPl, Double_t &yposlayer) | |
558 | { | |
559 | // | |
560 | // extrapolate track to TRD radii and convert global phi angle to local coordinate system | |
561 | // | |
562 | ||
563 | Double_t phi=-999; | |
564 | yposlayer=-999; | |
565 | // Phi at entrance of TRD | |
566 | Double_t xtrdbeg=AliTRDgeometry::GetXtrdBeg(); | |
567 | Double_t xtrdend=AliTRDgeometry::GetXtrdEnd(); | |
568 | Double_t x=xtrdbeg+iPl*(xtrdend-xtrdbeg)/6; | |
569 | if(fTrack->GetOuterParam()){ | |
570 | AliExternalTrackParam param(*fTrack->GetOuterParam()); | |
571 | param.PropagateTo(x,fESDEvent->GetMagneticField()); | |
572 | phi=param.Phi()-param.GetAlpha(); | |
573 | yposlayer= param.GetY(); | |
574 | } | |
575 | if(phi<-TMath::Pi())phi+=2*TMath::Pi(); | |
576 | if(phi>TMath::Pi())phi-=2*TMath::Pi(); | |
577 | ||
578 | return phi; | |
579 | } | |
580 | ||
581 | ||
582 | //________________________________________________________________________ | |
583 | Bool_t AliTRDPIDTree::PassTrackCuts(AliESDtrack *fESDTrack) | |
584 | { | |
585 | // | |
586 | // check if tracks pass minimum quality critieria | |
587 | // | |
588 | ||
589 | if(!fESDTrack) return kFALSE; | |
590 | ||
591 | if(fhtrackCuts) fhtrackCuts->Fill(0); | |
592 | ||
593 | ||
594 | // DCA to PV | |
595 | Float_t dca[2]; | |
596 | fESDTrack->GetImpactParameters(dca[0],dca[1]); | |
597 | if(dca[0]>5||dca[1]>10){ | |
598 | if(fhtrackCuts) fhtrackCuts->Fill(1); | |
599 | return kFALSE; | |
600 | } | |
601 | ||
602 | // remove kinks | |
603 | if(fESDTrack->GetKinkIndex(0)>0){ | |
604 | if(fhtrackCuts) fhtrackCuts->Fill(2); | |
605 | return kFALSE; | |
606 | } | |
607 | ||
608 | // eta cut | |
609 | if((TMath::Abs(fESDTrack->Eta()))>1.0){ | |
610 | if(fhtrackCuts) fhtrackCuts->Fill(3); | |
611 | return kFALSE; | |
612 | } | |
613 | ||
614 | // Chi2 | |
615 | Float_t tpcchi2=99; | |
616 | Int_t tpcnclusF=fESDTrack->GetTPCNclsF(); | |
617 | if(tpcnclusF!=0) tpcchi2=(Float_t)fESDTrack->GetTPCchi2()/tpcnclusF; | |
618 | else tpcchi2=1000; | |
619 | if(tpcchi2 > 4){ | |
620 | if(fhtrackCuts) fhtrackCuts->Fill(4); | |
621 | return kFALSE; | |
622 | } | |
623 | ||
624 | //TRD out | |
625 | if((fESDTrack->GetStatus()&AliVTrack::kTRDout)==0){ | |
626 | if(fhtrackCuts) fhtrackCuts->Fill(5); | |
627 | return kFALSE; | |
628 | } | |
629 | ||
630 | // QA #TRD PID tracklets (no cut, just for QA) | |
631 | if(fESDTrack->GetTRDntrackletsPID()<4){ | |
632 | if(fhtrackCuts) fhtrackCuts->Fill(6); | |
633 | } | |
634 | ||
635 | // QA Missing layers (no cut, just for QA) | |
636 | if(HasMissingLayer(fESDTrack)){ | |
637 | if(fhtrackCuts) fhtrackCuts->Fill(7); | |
638 | } | |
639 | ||
640 | return kTRUE; | |
641 | } | |
642 | ||
643 | //_______________________________________________________________________ | |
644 | Bool_t AliTRDPIDTree::HasMissingLayer(const AliVTrack *fESDTrack){ | |
645 | ||
646 | // | |
647 | // returns if slices missing | |
648 | // | |
649 | ||
650 | Int_t ntrl=0; | |
651 | for(Int_t jPl=0;jPl<AliVTrack::kTRDnPlanes;jPl++){ | |
652 | Double_t signal=0; | |
653 | for(int isl= 0; isl<= 8;isl++){ | |
654 | Double_t sigsl=fESDTrack->GetTRDslice(jPl,isl); | |
655 | if(sigsl>0)signal+=sigsl; | |
656 | } | |
657 | // if signal is missing, stop counting | |
658 | if(signal<=0||fESDTrack->GetTRDmomentum(jPl)<=0)break; | |
659 | ntrl++; | |
660 | } | |
661 | //compare with number of layers | |
662 | if(ntrl!=GetNTrackletsPID(fESDTrack))return kTRUE; | |
663 | ||
664 | return kFALSE; | |
665 | } | |
666 | ||
667 | //_______________________________________________________________________ | |
668 | Int_t AliTRDPIDTree::GetNTrackletsPID(const AliVTrack *fESDTrack) const | |
669 | { | |
670 | // | |
671 | // returns the number of PID tracklets, re-calculated from dE/dx stored in slices | |
672 | // | |
673 | ||
674 | Int_t ntracklets=0; | |
675 | ||
676 | for(Int_t iPl=0;iPl<AliVTrack::kTRDnPlanes;iPl++){ | |
677 | Double_t signal=0; | |
678 | for(int isl= 0; isl<= 8;isl++){ | |
679 | Double_t sigsl=fESDTrack->GetTRDslice(iPl,isl); | |
680 | if(sigsl>0)signal+=sigsl; | |
681 | } | |
682 | if(signal>0){ | |
683 | ntracklets++; | |
684 | } | |
685 | } | |
686 | return ntracklets; | |
687 | } |