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7ce8802c | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2006, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * * | |
5 | * Author: The ALICE Off-line Project. * | |
6 | * Contributors are mentioned in the code where appropriate. * | |
7 | * | |
8 | * Permission to use, copy, modify and distribute this software and its * | |
9 | * documentation strictly for non-commercial purposes is hereby granted * | |
10 | * without fee, provided that the above copyright notice appears in all * | |
11 | * copies and that both the copyright notice and this permission notice * | |
12 | * appear in the supporting documentation. The authors make no claims * | |
13 | * about the suitability of this software for any purpose. It is * | |
14 | * provided "as is" without express or implied warranty. * | |
15 | * *************************************************************************/ | |
16 | ||
27de2dfb | 17 | /* $Id$ */ |
18 | ||
7ce8802c | 19 | //*********************************************************** |
20 | // Class AliAODPidHF | |
21 | // class for PID with AliAODRecoDecayHF | |
b257e565 | 22 | // Authors: D. Caffarri caffarri@pd.infn.it, A.Dainese andrea.dainese@pd.infn.it, S. Dash dash@to.infn.it, F. Prino prino@to.infn.it, R. Romita r.romita@gsi.de, Y. Wang yifei@pi0.physi.uni-heidelberg.de P. Antonioli pietro.antonioli@bo.infn.it |
7ce8802c | 23 | //*********************************************************** |
24 | #include "AliAODPidHF.h" | |
25 | #include "AliAODPid.h" | |
7ce8802c | 26 | #include "AliPID.h" |
b79bfc3e | 27 | #include "AliPIDResponse.h" |
7ce8802c | 28 | #include "AliAODpidUtil.h" |
f9e3cf8e | 29 | #include "AliESDtrack.h" |
7ce8802c | 30 | |
31 | ||
32 | ClassImp(AliAODPidHF) | |
33 | ||
34 | //------------------------------ | |
35 | AliAODPidHF::AliAODPidHF(): | |
228f3aba | 36 | AliAODPid(), |
37 | fnNSigma(5), | |
38 | fnSigma(), | |
39 | fTOFSigma(160.), | |
40 | fnPriors(5), | |
41 | fPriors(), | |
42 | fnPLimit(2), | |
43 | fPLimit(), | |
cdac45d3 | 44 | fAsym(kFALSE), |
45 | fTPC(kFALSE), | |
46 | fTOF(kFALSE), | |
47 | fITS(kFALSE), | |
48 | fTRD(kFALSE), | |
79f3c225 | 49 | fMatch(0), |
913d1957 | 50 | fCompat(kFALSE), |
ad42e35b | 51 | fPCompatTOF(1.5), |
02baac36 | 52 | fnNSigmaCompat(2), |
ad42e35b | 53 | fnSigmaCompat(), |
12141139 | 54 | fMC(kFALSE), |
17c4a8d5 | 55 | fOnePad(kFALSE), |
5821ea5b | 56 | fMCLowEn2011(kFALSE), |
439d61b7 | 57 | fPbPb(kFALSE), |
b79bfc3e | 58 | fTOFdecide(kFALSE), |
2c9eefd4 | 59 | fOldPid(kTRUE), |
60 | fPtThresholdTPC(999999.), | |
b79bfc3e | 61 | fPidResponse(0) |
7ce8802c | 62 | { |
63 | // | |
64 | // Default constructor | |
65 | // | |
228f3aba | 66 | fPLimit=new Double_t[fnPLimit]; |
67 | fnSigma=new Double_t[fnNSigma]; | |
68 | fPriors=new Double_t[fnPriors]; | |
02baac36 | 69 | fnSigmaCompat=new Double_t[fnNSigmaCompat]; |
228f3aba | 70 | |
71 | for(Int_t i=0;i<fnNSigma;i++){ | |
72 | fnSigma[i]=0.; | |
73 | } | |
74 | for(Int_t i=0;i<fnPriors;i++){ | |
75 | fPriors[i]=0.; | |
76 | } | |
77 | for(Int_t i=0;i<fnPLimit;i++){ | |
78 | fPLimit[i]=0.; | |
79 | } | |
02baac36 | 80 | for(Int_t i=0;i<fnNSigmaCompat;i++){ |
ad42e35b | 81 | fnSigmaCompat[i]=3.; |
82 | } | |
7ce8802c | 83 | |
84 | } | |
85 | //---------------------- | |
86 | AliAODPidHF::~AliAODPidHF() | |
87 | { | |
88 | // destructor | |
228f3aba | 89 | // if(fPLimit) delete fPLimit; |
90 | // if(fnSigma) delete fnSigma; | |
91 | // if(fPriors) delete fPriors; | |
7ce8802c | 92 | } |
93 | //------------------------ | |
94 | AliAODPidHF::AliAODPidHF(const AliAODPidHF& pid) : | |
95 | AliAODPid(pid), | |
228f3aba | 96 | fnNSigma(pid.fnNSigma), |
97 | fnSigma(pid.fnSigma), | |
98 | fTOFSigma(pid.fTOFSigma), | |
99 | fnPriors(pid.fnPriors), | |
100 | fPriors(pid.fPriors), | |
101 | fnPLimit(pid.fnPLimit), | |
102 | fPLimit(pid.fPLimit), | |
cdac45d3 | 103 | fAsym(pid.fAsym), |
104 | fTPC(pid.fTPC), | |
105 | fTOF(pid.fTOF), | |
106 | fITS(pid.fITS), | |
107 | fTRD(pid.fTRD), | |
108 | fMatch(pid.fMatch), | |
913d1957 | 109 | fCompat(pid.fCompat), |
ad42e35b | 110 | fPCompatTOF(pid.fPCompatTOF), |
02baac36 | 111 | fnNSigmaCompat(pid.fnNSigmaCompat), |
ad42e35b | 112 | fnSigmaCompat(pid.fnSigmaCompat), |
12141139 | 113 | fMC(pid.fMC), |
17c4a8d5 | 114 | fOnePad(pid.fOnePad), |
5821ea5b | 115 | fMCLowEn2011(pid.fMCLowEn2011), |
439d61b7 | 116 | fPbPb(pid.fPbPb), |
b79bfc3e | 117 | fTOFdecide(pid.fTOFdecide), |
118 | fOldPid(pid.fOldPid), | |
2c9eefd4 | 119 | fPtThresholdTPC(pid.fPtThresholdTPC), |
b79bfc3e | 120 | fPidResponse(pid.fPidResponse) |
7ce8802c | 121 | { |
122 | ||
123 | for(Int_t i=0;i<5;i++){ | |
124 | fPriors[i]=pid.fPriors[i]; | |
125 | } | |
126 | ||
127 | } | |
128 | ||
129 | //---------------------- | |
228f3aba | 130 | Int_t AliAODPidHF::RawSignalPID(AliAODTrack *track, TString detector) const{ |
131 | // raw PID for single detectors, returns the particle type with smaller sigma | |
f9e3cf8e | 132 | Int_t specie=-1; |
133 | if(detector.Contains("ITS")) return ApplyPidITSRaw(track,specie); | |
134 | if(detector.Contains("TPC")) return ApplyPidTPCRaw(track,specie); | |
135 | if(detector.Contains("TOF")) return ApplyPidTOFRaw(track,specie); | |
7ce8802c | 136 | |
f9e3cf8e | 137 | return specie; |
7ce8802c | 138 | |
139 | } | |
140 | //--------------------------- | |
228f3aba | 141 | Bool_t AliAODPidHF::IsKaonRaw(AliAODTrack *track, TString detector) const{ |
142 | // checks if the track can be a kaon, raw PID applied for single detectors | |
7ce8802c | 143 | Int_t specie=0; |
144 | ||
145 | if(detector.Contains("ITS")) specie=ApplyPidITSRaw(track,3); | |
146 | if(detector.Contains("TPC")) specie=ApplyPidTPCRaw(track,3); | |
147 | if(detector.Contains("TOF")) specie=ApplyPidTOFRaw(track,3); | |
148 | ||
149 | if(specie==3) return kTRUE; | |
150 | return kFALSE; | |
151 | } | |
152 | //--------------------------- | |
228f3aba | 153 | Bool_t AliAODPidHF::IsPionRaw (AliAODTrack *track, TString detector) const{ |
154 | // checks if the track can be a pion, raw PID applied for single detectors | |
7ce8802c | 155 | |
156 | Int_t specie=0; | |
157 | ||
158 | if(detector.Contains("ITS")) specie=ApplyPidITSRaw(track,2); | |
159 | if(detector.Contains("TPC")) specie=ApplyPidTPCRaw(track,2); | |
160 | if(detector.Contains("TOF")) specie=ApplyPidTOFRaw(track,2); | |
161 | ||
162 | if(specie==2) return kTRUE; | |
163 | return kFALSE; | |
164 | } | |
165 | //--------------------------- | |
228f3aba | 166 | Bool_t AliAODPidHF::IsProtonRaw (AliAODTrack *track, TString detector) const{ |
167 | // checks if the track can be a proton raw PID applied for single detectors | |
7ce8802c | 168 | |
169 | Int_t specie=0; | |
170 | if(detector.Contains("ITS")) specie=ApplyPidITSRaw(track,4); | |
171 | if(detector.Contains("TPC")) specie=ApplyPidTPCRaw(track,4); | |
172 | if(detector.Contains("TOF")) specie=ApplyPidTOFRaw(track,4); | |
173 | ||
174 | if(specie==4) return kTRUE; | |
175 | ||
176 | return kFALSE; | |
177 | } | |
f9e3cf8e | 178 | //-------------------------- |
228f3aba | 179 | Bool_t AliAODPidHF::IsElectronRaw(AliAODTrack *track, TString detector) const{ |
180 | // checks if the track can be an electron raw PID applied for single detectors | |
f9e3cf8e | 181 | |
182 | Int_t specie=-1; | |
183 | if(detector.Contains("ITS")) specie=ApplyPidITSRaw(track,0); | |
184 | if(detector.Contains("TPC")) specie=ApplyPidTPCRaw(track,0); | |
185 | if(detector.Contains("TOF")) specie=ApplyPidTOFRaw(track,0); | |
186 | ||
187 | if(specie==0) return kTRUE; | |
188 | ||
189 | return kFALSE; | |
190 | } | |
191 | //-------------------------- | |
228f3aba | 192 | Int_t AliAODPidHF::ApplyPidTPCRaw(AliAODTrack *track,Int_t specie) const{ |
193 | // n-sigma cut, TPC PID | |
7ce8802c | 194 | |
cdac45d3 | 195 | if(!CheckStatus(track,"TPC")) return 0; |
b79bfc3e | 196 | Int_t pid=-1; |
197 | if(fOldPid){ | |
7ce8802c | 198 | AliAODPid *pidObj = track->GetDetPid(); |
199 | ||
200 | Double_t dedx=pidObj->GetTPCsignal(); | |
201 | Double_t mom = pidObj->GetTPCmomentum(); | |
2c9eefd4 | 202 | if(mom>fPtThresholdTPC) return 0; |
7ce8802c | 203 | AliTPCPIDResponse tpcResponse; |
12141139 | 204 | SetBetheBloch(tpcResponse); |
0aba57ed | 205 | UShort_t nTPCClus=pidObj->GetTPCsignalN(); |
206 | if(nTPCClus==0) {nTPCClus=track->GetTPCNcls();} | |
12141139 | 207 | |
f9e3cf8e | 208 | if(specie<0){ // from RawSignalPID : should return the particle specie to wich the de/dx is closer to the bethe-block curve -> performance to be checked |
228f3aba | 209 | Double_t nsigmaMax=fnSigma[0]; |
f9e3cf8e | 210 | for(Int_t ipart=0;ipart<5;ipart++){ |
7ce8802c | 211 | AliPID::EParticleType type=AliPID::EParticleType(ipart); |
0aba57ed | 212 | Double_t nsigma = TMath::Abs(tpcResponse.GetNumberOfSigmas(mom,dedx,nTPCClus,type)); |
228f3aba | 213 | if((nsigma<nsigmaMax) && (nsigma<fnSigma[0])) { |
7ce8802c | 214 | pid=ipart; |
215 | nsigmaMax=nsigma; | |
216 | } | |
217 | } | |
218 | }else{ // asks only for one particle specie | |
219 | AliPID::EParticleType type=AliPID::EParticleType(specie); | |
0aba57ed | 220 | Double_t nsigma = TMath::Abs(tpcResponse.GetNumberOfSigmas(mom,dedx,nTPCClus,type)); |
228f3aba | 221 | if (nsigma>fnSigma[0]) { |
f9e3cf8e | 222 | pid=-1; |
7ce8802c | 223 | }else{ |
79f3c225 | 224 | pid=specie; |
7ce8802c | 225 | } |
226 | } | |
b79bfc3e | 227 | }else{ //old pid |
228 | if(specie<0){ // from RawSignalPID : should return the particle specie to wich the de/dx is closer to the bethe-block curve -> performance to be checked | |
229 | Double_t nsigmaMax=fnSigma[0]; | |
230 | for(Int_t ipart=0;ipart<5;ipart++){ | |
231 | AliPID::EParticleType type=AliPID::EParticleType(ipart); | |
232 | Double_t nsigma = TMath::Abs(fPidResponse->NumberOfSigmasTPC(track,type)); | |
233 | if((nsigma<nsigmaMax) && (nsigma<fnSigma[0])) { | |
234 | pid=ipart; | |
235 | nsigmaMax=nsigma; | |
236 | } | |
237 | } | |
238 | }else{ // asks only for one particle specie | |
239 | AliPID::EParticleType type=AliPID::EParticleType(specie); | |
240 | Double_t nsigma = TMath::Abs(fPidResponse->NumberOfSigmasTPC(track,type)); | |
241 | if (nsigma>fnSigma[0]) { | |
242 | pid=-1; | |
243 | }else{ | |
244 | pid=specie; | |
245 | } | |
246 | } | |
247 | ||
248 | } //new pid | |
7ce8802c | 249 | |
250 | return pid; | |
251 | ||
252 | } | |
253 | //---------------------------- | |
228f3aba | 254 | Int_t AliAODPidHF::ApplyPidITSRaw(AliAODTrack *track,Int_t specie) const{ |
255 | // truncated mean, ITS PID | |
f9e3cf8e | 256 | |
cdac45d3 | 257 | if(!CheckStatus(track,"ITS")) return 0; |
b79bfc3e | 258 | Int_t pid=-1; |
f9e3cf8e | 259 | |
b79bfc3e | 260 | if(fOldPid){ |
7ce8802c | 261 | Double_t mom=track->P(); |
262 | AliAODPid *pidObj = track->GetDetPid(); | |
263 | ||
264 | Double_t dedx=pidObj->GetITSsignal(); | |
913d1957 | 265 | UChar_t clumap=track->GetITSClusterMap(); |
266 | Int_t nPointsForPid=0; | |
267 | for(Int_t i=2; i<6; i++){ | |
268 | if(clumap&(1<<i)) ++nPointsForPid; | |
269 | } | |
270 | ||
271 | Bool_t isSA=kTRUE; | |
272 | if(track->GetStatus() & AliESDtrack::kTPCin) isSA = kFALSE; | |
273 | ||
7ce8802c | 274 | AliITSPIDResponse itsResponse; |
f9e3cf8e | 275 | if(specie<0){ // from RawSignalPID : should return the particle specie to wich the de/dx is closer to the bethe-block curve -> performance to be checked |
228f3aba | 276 | Double_t nsigmaMax=fnSigma[4]; |
f9e3cf8e | 277 | for(Int_t ipart=0;ipart<5;ipart++){ |
7ce8802c | 278 | AliPID::EParticleType type=AliPID::EParticleType(ipart); |
913d1957 | 279 | Double_t nsigma = TMath::Abs(itsResponse.GetNumberOfSigmas(mom,dedx,type,nPointsForPid,isSA)); |
228f3aba | 280 | if((nsigma<nsigmaMax) && (nsigma<fnSigma[4])) { |
7ce8802c | 281 | pid=ipart; |
282 | nsigmaMax=nsigma; | |
283 | } | |
284 | } | |
285 | }else{ // asks only for one particle specie | |
286 | AliPID::EParticleType type=AliPID::EParticleType(specie); | |
287 | Double_t nsigma = TMath::Abs(itsResponse.GetNumberOfSigmas(mom,dedx,type)); | |
228f3aba | 288 | if (nsigma>fnSigma[4]) { |
f9e3cf8e | 289 | pid=-1; |
7ce8802c | 290 | }else{ |
79f3c225 | 291 | pid=specie; |
7ce8802c | 292 | } |
293 | } | |
b79bfc3e | 294 | }else{ // old pid |
295 | ||
296 | if(specie<0){ // from RawSignalPID : should return the particle specie to wich the de/dx is closer to the bethe-block curve -> performance to be checked | |
297 | Double_t nsigmaMax=fnSigma[4]; | |
298 | for(Int_t ipart=0;ipart<5;ipart++){ | |
299 | AliPID::EParticleType type=AliPID::EParticleType(ipart); | |
300 | Double_t nsigma = TMath::Abs(fPidResponse->NumberOfSigmasITS(track,type)); | |
301 | if((nsigma<nsigmaMax) && (nsigma<fnSigma[4])) { | |
302 | pid=ipart; | |
303 | nsigmaMax=nsigma; | |
304 | } | |
305 | } | |
306 | }else{ // asks only for one particle specie | |
307 | AliPID::EParticleType type=AliPID::EParticleType(specie); | |
308 | Double_t nsigma = TMath::Abs(fPidResponse->NumberOfSigmasITS(track,type)); | |
309 | if (nsigma>fnSigma[4]) { | |
310 | pid=-1; | |
311 | }else{ | |
312 | pid=specie; | |
313 | } | |
314 | } | |
315 | } //new pid | |
316 | ||
7ce8802c | 317 | return pid; |
318 | } | |
319 | //---------------------------- | |
228f3aba | 320 | Int_t AliAODPidHF::ApplyPidTOFRaw(AliAODTrack *track,Int_t specie) const{ |
321 | // n-sigma cut, TOF PID | |
f9e3cf8e | 322 | |
cdac45d3 | 323 | if(!CheckStatus(track,"TOF")) return 0; |
f9e3cf8e | 324 | |
7ce8802c | 325 | Double_t time[AliPID::kSPECIESN]; |
b257e565 | 326 | Double_t sigmaTOFPid[AliPID::kSPECIES]; |
7ce8802c | 327 | AliAODPid *pidObj = track->GetDetPid(); |
328 | pidObj->GetIntegratedTimes(time); | |
228f3aba | 329 | Double_t sigTOF=pidObj->GetTOFsignal(); |
b257e565 | 330 | pidObj->GetTOFpidResolution(sigmaTOFPid); |
331 | ||
f9e3cf8e | 332 | Int_t pid=-1; |
7ce8802c | 333 | |
b257e565 | 334 | if(specie<0){ |
335 | Double_t sigmaTOFtrack; | |
336 | if (sigmaTOFPid[4]>0) sigmaTOFtrack=sigmaTOFPid[4]; | |
337 | else sigmaTOFtrack=fTOFSigma; | |
338 | Double_t nsigmaMax=sigmaTOFtrack*fnSigma[3]; | |
f9e3cf8e | 339 | for(Int_t ipart=0;ipart<5;ipart++){ |
228f3aba | 340 | Double_t nsigma=TMath::Abs(sigTOF-time[ipart]); |
b257e565 | 341 | if (sigmaTOFPid[ipart]>0) sigmaTOFtrack=sigmaTOFPid[ipart]; |
342 | else sigmaTOFtrack=fTOFSigma; // backward compatibility for old AODs | |
343 | if((nsigma<nsigmaMax) && (nsigma<fnSigma[3]*sigmaTOFtrack)) { | |
7ce8802c | 344 | pid=ipart; |
345 | nsigmaMax=nsigma; | |
346 | } | |
347 | } | |
348 | }else{ // asks only for one particle specie | |
228f3aba | 349 | Double_t nsigma=TMath::Abs(sigTOF-time[specie]); |
b257e565 | 350 | Double_t sigmaTOFtrack; |
351 | if (sigmaTOFPid[specie]>0) sigmaTOFtrack=sigmaTOFPid[specie]; | |
352 | else sigmaTOFtrack=fTOFSigma; // backward compatibility for old AODs | |
353 | if (nsigma>fnSigma[3]*sigmaTOFtrack) { | |
354 | pid=-1; | |
355 | }else{ | |
356 | pid=specie; | |
357 | } | |
7ce8802c | 358 | } |
359 | return pid; | |
360 | ||
361 | } | |
362 | //------------------------------ | |
228f3aba | 363 | void AliAODPidHF::CombinedProbability(AliAODTrack *track,Bool_t *type) const{ |
364 | // combined PID stored inside the AOD track | |
7ce8802c | 365 | |
366 | const Double_t *pid=track->PID(); | |
367 | Float_t max=0.; | |
368 | Int_t k=-1; | |
369 | for (Int_t i=0; i<10; i++) { | |
370 | if (pid[i]>max) {k=i; max=pid[i];} | |
371 | } | |
372 | ||
373 | if(k==2) type[0]=kTRUE; | |
374 | if(k==3) type[1]=kTRUE; | |
375 | if(k==4) type[2]=kTRUE; | |
376 | ||
377 | return; | |
378 | } | |
379 | //-------------------- | |
cdac45d3 | 380 | void AliAODPidHF::BayesianProbability(AliAODTrack *track,Double_t *pid) const{ |
228f3aba | 381 | // bayesian PID for single detectors or combined |
7ce8802c | 382 | |
cdac45d3 | 383 | if(fITS && !fTPC && !fTOF) {BayesianProbabilityITS(track,pid);return;} |
384 | if(fTPC && !fITS && !fTOF) {BayesianProbabilityTPC(track,pid);return;} | |
385 | if(fTOF && !fITS && !fTPC) {BayesianProbabilityTOF(track,pid);return;} | |
386 | ||
387 | Double_t probITS[5]={1.,1.,1.,1.,1.}; | |
388 | Double_t probTPC[5]={1.,1.,1.,1.,1.}; | |
389 | Double_t probTOF[5]={1.,1.,1.,1.,1.}; | |
390 | if(fITS) BayesianProbabilityITS(track,probITS); | |
391 | if(fTPC) BayesianProbabilityTPC(track,probTPC); | |
392 | if(fTOF) BayesianProbabilityTOF(track,probTOF); | |
7ce8802c | 393 | Double_t probTot[5]={0.,0.,0.,0.,0.}; |
394 | for(Int_t i=0;i<5;i++){ | |
395 | probTot[i]=probITS[i]*probTPC[i]*probTOF[i]; | |
396 | } | |
397 | for(Int_t i2=0;i2<5;i2++){ | |
398 | pid[i2]=probTot[i2]*fPriors[i2]/(probTot[0]*fPriors[0]+probTot[1]*fPriors[1]+probTot[2]*fPriors[2]+probTot[3]*fPriors[3]+probTot[4]*fPriors[4]); | |
399 | } | |
7ce8802c | 400 | |
401 | return; | |
402 | ||
403 | } | |
404 | //------------------------------------ | |
228f3aba | 405 | void AliAODPidHF::BayesianProbabilityITS(AliAODTrack *track,Double_t *prob) const{ |
7ce8802c | 406 | |
228f3aba | 407 | // bayesian PID for ITS |
7ce8802c | 408 | AliAODpidUtil pid; |
409 | Double_t itspid[AliPID::kSPECIES]; | |
410 | pid.MakeITSPID(track,itspid); | |
411 | for(Int_t ind=0;ind<AliPID::kSPECIES;ind++){ | |
369ad90e | 412 | if(fTOF || fTPC || fTRD){ |
413 | prob[ind]=itspid[ind]; | |
414 | }else{ | |
415 | prob[ind]=itspid[ind]*fPriors[ind]/(itspid[0]*fPriors[0]+itspid[1]*fPriors[1]+itspid[2]*fPriors[2]+itspid[3]*fPriors[3]+itspid[4]*fPriors[4]); | |
416 | } | |
7ce8802c | 417 | } |
418 | return; | |
419 | ||
420 | } | |
421 | //------------------------------------ | |
228f3aba | 422 | void AliAODPidHF::BayesianProbabilityTPC(AliAODTrack *track,Double_t *prob) const{ |
423 | // bayesian PID for TPC | |
7ce8802c | 424 | |
425 | AliAODpidUtil pid; | |
426 | Double_t tpcpid[AliPID::kSPECIES]; | |
427 | pid.MakeTPCPID(track,tpcpid); | |
428 | for(Int_t ind=0;ind<AliPID::kSPECIES;ind++){ | |
369ad90e | 429 | if(fTOF || fITS || fTRD){ |
430 | prob[ind]=tpcpid[ind]; | |
7ce8802c | 431 | }else{ |
369ad90e | 432 | prob[ind]=tpcpid[ind]*fPriors[ind]/(tpcpid[0]*fPriors[0]+tpcpid[1]*fPriors[1]+tpcpid[2]*fPriors[2]+tpcpid[3]*fPriors[3]+tpcpid[4]*fPriors[4]); |
7ce8802c | 433 | } |
369ad90e | 434 | } |
7ce8802c | 435 | return; |
436 | ||
437 | } | |
438 | //------------------------------------ | |
228f3aba | 439 | void AliAODPidHF::BayesianProbabilityTOF(AliAODTrack *track,Double_t *prob) const{ |
440 | // bayesian PID for TOF | |
7ce8802c | 441 | |
442 | AliAODpidUtil pid; | |
443 | Double_t tofpid[AliPID::kSPECIES]; | |
228f3aba | 444 | pid.MakeTOFPID(track,tofpid); |
7ce8802c | 445 | for(Int_t ind=0;ind<AliPID::kSPECIES;ind++){ |
369ad90e | 446 | if(fTPC || fITS || fTRD){ |
447 | prob[ind]=tofpid[ind]; | |
448 | }else{ | |
7ce8802c | 449 | prob[ind]=tofpid[ind]*fPriors[ind]/(tofpid[0]*fPriors[0]+tofpid[1]*fPriors[1]+tofpid[2]*fPriors[2]+tofpid[3]*fPriors[3]+tofpid[4]*fPriors[4]); |
450 | } | |
369ad90e | 451 | } |
7ce8802c | 452 | return; |
453 | ||
454 | } | |
f9e3cf8e | 455 | //--------------------------------- |
228f3aba | 456 | void AliAODPidHF::BayesianProbabilityTRD(AliAODTrack *track,Double_t *prob) const{ |
457 | // bayesian PID for TRD | |
f9e3cf8e | 458 | |
459 | AliAODpidUtil pid; | |
460 | Double_t trdpid[AliPID::kSPECIES]; | |
461 | pid.MakeTRDPID(track,trdpid); | |
462 | for(Int_t ind=0;ind<AliPID::kSPECIES;ind++){ | |
369ad90e | 463 | if(fTPC || fITS || fTOF){ |
464 | prob[ind]=trdpid[ind]; | |
f9e3cf8e | 465 | }else{ |
369ad90e | 466 | prob[ind]=trdpid[ind]*fPriors[ind]/(trdpid[0]*fPriors[0]+trdpid[1]*fPriors[1]+trdpid[2]*fPriors[2]+trdpid[3]*fPriors[3]+trdpid[4]*fPriors[4]); |
f9e3cf8e | 467 | } |
369ad90e | 468 | } |
f9e3cf8e | 469 | return; |
470 | ||
471 | } | |
472 | //-------------------------------- | |
228f3aba | 473 | Bool_t AliAODPidHF::CheckStatus(AliAODTrack *track,TString detectors) const{ |
f9e3cf8e | 474 | |
228f3aba | 475 | // Quality cuts on the tracks, detector by detector |
f9e3cf8e | 476 | |
477 | if(detectors.Contains("ITS")){ | |
478 | if ((track->GetStatus()&AliESDtrack::kITSin)==0) return kFALSE; | |
479 | UChar_t clumap=track->GetITSClusterMap(); | |
480 | Int_t nPointsForPid=0; | |
481 | for(Int_t i=2; i<6; i++){ | |
482 | if(clumap&(1<<i)) ++nPointsForPid; | |
483 | } | |
913d1957 | 484 | if(nPointsForPid<3) return kFALSE; |
f9e3cf8e | 485 | } |
486 | ||
487 | if(detectors.Contains("TPC")){ | |
488 | if ((track->GetStatus()&AliESDtrack::kTPCin )==0) return kFALSE; | |
489 | UShort_t nTPCClus=track->GetTPCClusterMap().CountBits(); | |
490 | if (nTPCClus<70) return kFALSE; | |
491 | } | |
492 | ||
493 | if(detectors.Contains("TOF")){ | |
494 | if ((track->GetStatus()&AliESDtrack::kTOFout )==0) return kFALSE; | |
495 | if ((track->GetStatus()&AliESDtrack::kTIME )==0) return kFALSE; | |
496 | if ((track->GetStatus()&AliESDtrack::kTOFpid )==0) return kFALSE; | |
b257e565 | 497 | if (!(track->GetStatus()&AliESDtrack::kTOFmismatch)==0) return kFALSE; |
f9e3cf8e | 498 | } |
499 | ||
500 | ||
501 | if(detectors.Contains("TRD")){ | |
502 | if ((track->GetStatus()&AliESDtrack::kTRDout )==0) return kFALSE; | |
503 | AliAODPid *pidObj = track->GetDetPid(); | |
504 | Float_t *mom=pidObj->GetTRDmomentum(); | |
505 | Int_t ntracklets=0; | |
506 | for(Int_t iPl=0;iPl<6;iPl++){ | |
507 | if(mom[iPl]>0.) ntracklets++; | |
508 | } | |
509 | if(ntracklets<4) return kFALSE; | |
510 | } | |
511 | ||
512 | return kTRUE; | |
513 | } | |
228f3aba | 514 | //-------------------------------------------- |
515 | Bool_t AliAODPidHF::TPCRawAsym(AliAODTrack* track,Int_t specie) const{ | |
516 | // TPC nsigma cut PID, different sigmas in different p bins | |
517 | ||
518 | if(!CheckStatus(track,"TPC")) return kFALSE; | |
519 | AliAODPid *pidObj = track->GetDetPid(); | |
520 | Double_t mom = pidObj->GetTPCmomentum(); | |
2c9eefd4 | 521 | if(mom>fPtThresholdTPC) return 0; |
b79bfc3e | 522 | Double_t nsigma=999.; |
523 | if(fOldPid){ | |
228f3aba | 524 | Double_t dedx=pidObj->GetTPCsignal(); |
0aba57ed | 525 | UShort_t nTPCClus=pidObj->GetTPCsignalN(); |
526 | if(nTPCClus==0) {nTPCClus=track->GetTPCNcls();} | |
228f3aba | 527 | |
528 | AliTPCPIDResponse tpcResponse; | |
12141139 | 529 | SetBetheBloch(tpcResponse); |
228f3aba | 530 | AliPID::EParticleType type=AliPID::EParticleType(specie); |
b79bfc3e | 531 | nsigma = TMath::Abs(tpcResponse.GetNumberOfSigmas(mom,dedx,nTPCClus,type)); |
532 | ||
533 | }else{ //old pid | |
534 | AliPID::EParticleType type=AliPID::EParticleType(specie); | |
535 | nsigma = TMath::Abs(fPidResponse->NumberOfSigmasTPC(track,type)); | |
536 | } //new pid | |
228f3aba | 537 | |
538 | if(mom<fPLimit[0] && nsigma<fnSigma[0]) return kTRUE; | |
539 | if(mom<fPLimit[1] && mom>fPLimit[0] && nsigma<fnSigma[1]) return kTRUE; | |
540 | if(mom>fPLimit[1] && nsigma<fnSigma[2]) return kTRUE; | |
541 | ||
542 | return kFALSE; | |
543 | } | |
544 | //------------------ | |
545 | Int_t AliAODPidHF::MatchTPCTOF(AliAODTrack *track,Int_t mode,Int_t specie,Bool_t compat){ | |
546 | // combination of the PID info coming from TPC and TOF | |
547 | if(mode==1){ | |
548 | //TOF || TPC (a la' Andrea R.) | |
cdac45d3 | 549 | // convention: |
228f3aba | 550 | // for the single detectors: -1 = kFALSE, 1 = kTRUE, 0 = compatible |
551 | // the method returns the sum of the response of the 2 detectors | |
79f3c225 | 552 | if(fTPC && fTOF) {if(!CheckStatus(track,"TPC") && !CheckStatus(track,"TOF")) return 0;} |
228f3aba | 553 | |
cdac45d3 | 554 | |
1cb0f658 | 555 | Int_t tTPCinfo=0; |
cdac45d3 | 556 | if(fTPC){ |
228f3aba | 557 | if(CheckStatus(track,"TPC")) { |
558 | if(fAsym) { | |
3779f50a | 559 | if(TPCRawAsym(track,specie)) { |
1cb0f658 | 560 | tTPCinfo=1; |
3779f50a | 561 | }else{ |
1cb0f658 | 562 | tTPCinfo=-1; |
3779f50a | 563 | } |
228f3aba | 564 | }else{ |
3779f50a | 565 | if(specie==2 && IsPionRaw(track,"TPC")) { |
1cb0f658 | 566 | tTPCinfo=1; |
3779f50a | 567 | }else{ |
1cb0f658 | 568 | tTPCinfo=-1; |
3779f50a | 569 | } |
570 | if(specie==3 && IsKaonRaw(track,"TPC")) { | |
1cb0f658 | 571 | tTPCinfo=1; |
3779f50a | 572 | }else{ |
1cb0f658 | 573 | tTPCinfo=-1; |
3779f50a | 574 | } |
575 | if(specie==4 && IsProtonRaw(track,"TPC")) { | |
1cb0f658 | 576 | tTPCinfo=1; |
3779f50a | 577 | }else{ |
1cb0f658 | 578 | tTPCinfo=-1; |
3779f50a | 579 | } |
580 | ||
228f3aba | 581 | } |
582 | ||
583 | ||
1cb0f658 | 584 | if(compat && tTPCinfo<0){ |
cdac45d3 | 585 | Double_t sig0tmp=fnSigma[0]; |
ad42e35b | 586 | SetSigma(0,fnSigmaCompat[0]); |
1cb0f658 | 587 | if(specie==2 && IsPionRaw(track,"TPC")) tTPCinfo=0; |
588 | if(specie==3 && IsKaonRaw(track,"TPC")) tTPCinfo=0; | |
589 | if(specie==4 && IsProtonRaw(track,"TPC")) tTPCinfo=0; | |
cdac45d3 | 590 | SetSigma(0,sig0tmp); |
591 | } | |
228f3aba | 592 | |
cdac45d3 | 593 | } |
228f3aba | 594 | } |
595 | ||
1cb0f658 | 596 | Int_t tTOFinfo=0; |
cdac45d3 | 597 | if(fTOF){ |
1cb0f658 | 598 | if(!CheckStatus(track,"TOF") && fTPC) return tTPCinfo; |
228f3aba | 599 | |
1cb0f658 | 600 | tTOFinfo=-1; |
228f3aba | 601 | |
1cb0f658 | 602 | if(specie==2 && IsPionRaw(track,"TOF")) tTOFinfo=1; |
603 | if(specie==3 && IsKaonRaw(track,"TOF")) tTOFinfo=1; | |
604 | if(specie==4 && IsProtonRaw(track,"TOF")) tTOFinfo=1; | |
228f3aba | 605 | |
1cb0f658 | 606 | if(compat && tTOFinfo>0){ |
cdac45d3 | 607 | Double_t ptrack=track->P(); |
ad42e35b | 608 | if(ptrack>fPCompatTOF) { |
609 | Double_t sig0tmp=fnSigma[3]; | |
610 | SetSigma(3,fnSigmaCompat[1]); | |
611 | if(specie==2 && IsPionRaw(track,"TOF")) tTOFinfo=0; | |
612 | if(specie==3 && IsKaonRaw(track,"TOF")) tTOFinfo=0; | |
613 | if(specie==4 && IsProtonRaw(track,"TOF")) tTOFinfo=0; | |
614 | SetSigma(3,sig0tmp); | |
615 | } | |
cdac45d3 | 616 | } |
79f3c225 | 617 | } |
913d1957 | 618 | |
439d61b7 | 619 | |
620 | if(tTPCinfo+tTOFinfo==0 && fTOFdecide){ | |
621 | if(!CheckStatus(track,"TOF")) return tTPCinfo; | |
622 | return tTOFinfo; | |
623 | } | |
624 | ||
913d1957 | 625 | if(tTPCinfo+tTOFinfo==0 && fITS){ |
626 | if(!CheckStatus(track,"ITS")) return tTPCinfo+tTOFinfo; | |
627 | Int_t tITSinfo = -1; | |
2a5813a1 | 628 | if(specie==2 && IsPionRaw(track,"ITS")) tITSinfo=1; |
629 | if(specie==3 && IsKaonRaw(track,"ITS")) tITSinfo=1; | |
630 | if(specie==4 && IsProtonRaw(track,"ITS")) tITSinfo=1; | |
913d1957 | 631 | return tITSinfo; |
632 | } | |
633 | ||
1cb0f658 | 634 | return tTPCinfo+tTOFinfo; |
cdac45d3 | 635 | } |
228f3aba | 636 | if(mode==2){ |
637 | //TPC & TOF (a la' Yifei) | |
cdac45d3 | 638 | // convention: -1 = kFALSE, 1 = kTRUE, 0 = not identified |
1cb0f658 | 639 | Int_t tTPCinfo=0; |
cdac45d3 | 640 | |
641 | if(fTPC && CheckStatus(track,"TPC")) { | |
1cb0f658 | 642 | tTPCinfo=1; |
228f3aba | 643 | if(fAsym){ |
1cb0f658 | 644 | if(!TPCRawAsym(track,specie)) tTPCinfo=-1; |
228f3aba | 645 | }else{ |
1cb0f658 | 646 | if(specie==2 && !IsPionRaw(track,"TPC")) tTPCinfo=-1; |
647 | if(specie==3 && !IsKaonRaw(track,"TPC")) tTPCinfo=-1; | |
648 | if(specie==4 && !IsProtonRaw(track,"TPC")) tTPCinfo=-1; | |
228f3aba | 649 | } |
650 | } | |
651 | ||
1cb0f658 | 652 | Int_t tTOFinfo=1; |
cdac45d3 | 653 | if(fTOF){ |
1cb0f658 | 654 | if(fTPC && !CheckStatus(track,"TOF")) return tTPCinfo; |
228f3aba | 655 | |
1cb0f658 | 656 | if(specie==2 && !IsPionRaw(track,"TOF")) tTOFinfo=-1; |
657 | if(specie==3 && !IsKaonRaw(track,"TOF")) tTOFinfo=-1; | |
658 | if(specie==4 && !IsProtonRaw(track,"TOF")) tTOFinfo=-1; | |
cdac45d3 | 659 | } |
913d1957 | 660 | |
661 | if(tTOFinfo==1 && tTPCinfo==1) return 1; | |
662 | ||
663 | if(tTPCinfo+tTOFinfo==0 && fITS){ | |
664 | if(!CheckStatus(track,"ITS")) return tTPCinfo+tTOFinfo; | |
665 | Int_t tITSinfo = -1; | |
2a5813a1 | 666 | if(specie==2 && IsPionRaw(track,"ITS")) tITSinfo=1; |
667 | if(specie==3 && IsKaonRaw(track,"ITS")) tITSinfo=1; | |
668 | if(specie==4 && IsProtonRaw(track,"ITS")) tITSinfo=1; | |
913d1957 | 669 | return tITSinfo; |
670 | } | |
228f3aba | 671 | |
228f3aba | 672 | return -1; |
673 | ||
cdac45d3 | 674 | } |
228f3aba | 675 | |
676 | if(mode==3){ | |
677 | //TPC for p<fPLimit[0], TOF for p>=fPLimit[0] (a la' Andrea A.) | |
678 | // convention (temporary): -1 = kFALSE, 1 = kTRUE, 0 = not identified | |
679 | ||
cdac45d3 | 680 | if(fTPC && fTOF) if(!CheckStatus(track,"TPC") && !CheckStatus(track,"TOF")) return 0; |
228f3aba | 681 | |
682 | Double_t ptrack=track->P(); | |
683 | ||
684 | ||
1cb0f658 | 685 | Int_t tTPCinfo=-1; |
228f3aba | 686 | |
913d1957 | 687 | if(ptrack>=fPLimit[0] && ptrack<fPLimit[1] && fTPC) { |
228f3aba | 688 | if(!CheckStatus(track,"TPC")) return 0; |
689 | if(fAsym) { | |
1cb0f658 | 690 | if(TPCRawAsym(track,specie)) tTPCinfo=1; |
228f3aba | 691 | }else{ |
1cb0f658 | 692 | if(specie==2 && IsPionRaw(track,"TPC")) tTPCinfo=1; |
693 | if(specie==3 && IsKaonRaw(track,"TPC")) tTPCinfo=1; | |
694 | if(specie==4 && IsProtonRaw(track,"TPC")) tTPCinfo=1; | |
228f3aba | 695 | } |
1cb0f658 | 696 | return tTPCinfo; |
228f3aba | 697 | } |
698 | ||
1cb0f658 | 699 | Int_t tTOFinfo=-1; |
913d1957 | 700 | if(ptrack>=fPLimit[1] && fTOF){ |
228f3aba | 701 | if(!CheckStatus(track,"TOF")) return 0; |
1cb0f658 | 702 | if(specie==2 && IsPionRaw(track,"TOF")) tTOFinfo=1; |
703 | if(specie==3 && IsKaonRaw(track,"TOF")) tTOFinfo=1; | |
704 | if(specie==4 && IsProtonRaw(track,"TOF")) tTOFinfo=1; | |
705 | return tTOFinfo; | |
228f3aba | 706 | } |
707 | ||
913d1957 | 708 | Int_t tITSinfo=-1; |
709 | if(ptrack<fPLimit[0] && fITS){ | |
710 | if(!CheckStatus(track,"ITS")) return 0; | |
711 | if(specie==2 && IsPionRaw(track,"ITS")) tITSinfo=1; | |
712 | if(specie==3 && IsKaonRaw(track,"ITS")) tITSinfo=1; | |
713 | if(specie==4 && IsProtonRaw(track,"ITS")) tITSinfo=1; | |
714 | return tITSinfo; | |
715 | } | |
716 | ||
228f3aba | 717 | } |
718 | ||
719 | return -1; | |
cdac45d3 | 720 | |
721 | } | |
722 | //---------------------------------- | |
723 | Int_t AliAODPidHF::MakeRawPid(AliAODTrack *track, Int_t specie){ | |
1cb0f658 | 724 | // general method to compute PID |
cdac45d3 | 725 | if(fMatch>0){ |
1cb0f658 | 726 | return MatchTPCTOF(track,fMatch,specie,fCompat); |
cdac45d3 | 727 | }else{ |
728 | if(fTPC && !fTOF && !fITS) { | |
ad42e35b | 729 | Int_t tTPCres=0; |
730 | if(!fAsym){ | |
731 | tTPCres=ApplyPidTPCRaw(track,specie); | |
732 | }else{ | |
733 | if(TPCRawAsym(track,specie)) { | |
734 | tTPCres=1; | |
735 | }else{ | |
736 | tTPCres=-1; | |
737 | } | |
738 | } | |
1cb0f658 | 739 | if(tTPCres==specie){return 1;}else{return tTPCres;}; |
cdac45d3 | 740 | }else{ |
741 | AliError("You should enable just one detector if you don't want to match"); | |
742 | return 0; | |
743 | } | |
744 | if(fTOF && !fTPC && !fITS) { | |
1cb0f658 | 745 | Int_t tTOFres=ApplyPidTOFRaw(track,specie); |
746 | if(tTOFres==specie){return 1;}else{return tTOFres;}; | |
cdac45d3 | 747 | }else{ |
748 | AliError("You should enable just one detector if you don't want to match"); | |
749 | return 0; | |
750 | } | |
751 | ||
752 | if(fITS && !fTPC && !fTOF) { | |
1cb0f658 | 753 | Int_t tITSres=ApplyPidITSRaw(track,specie); |
754 | if(tITSres==specie){return 1;}else{return tITSres;}; | |
cdac45d3 | 755 | }else{ |
756 | AliError("You should enable just one detector if you don't want to match"); | |
757 | return 0; | |
758 | } | |
759 | } | |
760 | ||
228f3aba | 761 | } |
12141139 | 762 | //-------------------------------------------- |
bad87dce | 763 | void AliAODPidHF::SetBetheBloch(AliTPCPIDResponse &tpcResp) const{ |
12141139 | 764 | |
765 | Double_t alephParameters[5]; | |
98db0ef2 | 766 | |
32a978c2 | 767 | if(fMC) { // MC |
12141139 | 768 | |
32a978c2 | 769 | if(fPbPb) { // PbPb MC |
770 | ||
9ea811e0 | 771 | alephParameters[0] = 1.44405/50.; |
32a978c2 | 772 | alephParameters[1] = 2.35409e+01; |
773 | alephParameters[2] = TMath::Exp(-2.90330e+01); | |
774 | alephParameters[3] = 2.10681e+00; | |
775 | alephParameters[4] = 4.62254e+00; | |
12141139 | 776 | |
32a978c2 | 777 | } else { // pp MC |
5821ea5b | 778 | if(fMCLowEn2011){ |
779 | alephParameters[0]=0.0207667; | |
780 | alephParameters[1]=29.9936; | |
781 | alephParameters[2]=3.87866e-11; | |
782 | alephParameters[3]=2.17291; | |
783 | alephParameters[4]=7.1623; | |
3d4afb8c | 784 | }else if(fOnePad){ |
785 | alephParameters[0]=0.029021; | |
786 | alephParameters[1]=25.4181; | |
787 | alephParameters[2]=4.66596e-08; | |
788 | alephParameters[3]=1.90008; | |
789 | alephParameters[4]=4.63783; | |
5821ea5b | 790 | }else{ |
791 | alephParameters[0] = 2.15898/50.; | |
792 | alephParameters[1] = 1.75295e+01; | |
793 | alephParameters[2] = 3.40030e-09; | |
794 | alephParameters[3] = 1.96178e+00; | |
795 | alephParameters[4] = 3.91720e+00; | |
796 | } | |
32a978c2 | 797 | } |
12141139 | 798 | |
32a978c2 | 799 | } else { // Real Data |
800 | ||
801 | if(fOnePad) { // pp 1-pad (since LHC10d) | |
802 | ||
803 | alephParameters[0] =1.34490e+00/50.; | |
98db0ef2 | 804 | alephParameters[1] = 2.69455e+01; |
8a292370 | 805 | alephParameters[2] = TMath::Exp(-2.97552e+01); |
98db0ef2 | 806 | alephParameters[3] = 2.35339e+00; |
807 | alephParameters[4] = 5.98079e+00; | |
808 | ||
32a978c2 | 809 | } else if(fPbPb) { // PbPb |
98db0ef2 | 810 | |
811 | // alephParameters[0] = 1.25202/50.; | |
812 | // alephParameters[1] = 2.74992e+01; | |
813 | // alephParameters[2] = TMath::Exp(-3.31517e+01); | |
814 | // alephParameters[3] = 2.46246; | |
815 | // alephParameters[4] = 6.78938; | |
816 | ||
817 | alephParameters[0] = 5.10207e+00/50.; | |
818 | alephParameters[1] = 7.94982e+00; | |
819 | alephParameters[2] = TMath::Exp(-9.07942e+00); | |
820 | alephParameters[3] = 2.38808e+00; | |
821 | alephParameters[4] = 1.68165e+00; | |
822 | ||
32a978c2 | 823 | } else { // pp no 1-pad (LHC10bc) |
824 | ||
12141139 | 825 | alephParameters[0] = 0.0283086/0.97; |
826 | alephParameters[1] = 2.63394e+01; | |
827 | alephParameters[2] = 5.04114e-11; | |
828 | alephParameters[3] = 2.12543e+00; | |
829 | alephParameters[4] = 4.88663e+00; | |
98db0ef2 | 830 | |
12141139 | 831 | } |
98db0ef2 | 832 | |
12141139 | 833 | } |
834 | ||
835 | tpcResp.SetBetheBlochParameters(alephParameters[0],alephParameters[1],alephParameters[2],alephParameters[3],alephParameters[4]); | |
836 | ||
837 | ||
838 | return; | |
839 | ||
840 | } | |
d50b25df | 841 | //----------------------- |
842 | Bool_t AliAODPidHF::IsTOFPiKexcluded(AliAODTrack *track,Double_t nsigmaK){ | |
843 | ||
844 | ||
845 | if(!CheckStatus(track,"TOF")) return 0; | |
846 | ||
847 | Double_t time[AliPID::kSPECIESN]; | |
848 | Double_t sigmaTOFPid[AliPID::kSPECIES]; | |
849 | AliAODPid *pidObj = track->GetDetPid(); | |
850 | pidObj->GetIntegratedTimes(time); | |
851 | Double_t sigTOF=pidObj->GetTOFsignal(); | |
852 | pidObj->GetTOFpidResolution(sigmaTOFPid); | |
853 | Double_t sigmaTOFtrack; | |
854 | if (sigmaTOFPid[3]>0) sigmaTOFtrack=sigmaTOFPid[3]; | |
855 | else sigmaTOFtrack=fTOFSigma; // backward compatibility for old AODs | |
856 | ||
857 | if((sigTOF-time[3])>nsigmaK*sigmaTOFtrack)return kTRUE;// K, Pi excluded (->LIKELY A PROTON) | |
858 | ||
859 | return kFALSE; | |
860 | ||
861 | } | |
862 |