1 /**************************************************************************
2 * Copyright(c) 1998-2006, ALICE Experiment at CERN, All rights reserved. *
5 * Author: The ALICE Off-line Project. *
6 * Contributors are mentioned in the code where appropriate. *
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 * *************************************************************************/
17 //***********************************************************
19 // class for PID with AliAODRecoDecayHF
20 // 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
21 //***********************************************************
22 #include "AliAODPidHF.h"
23 #include "AliAODPid.h"
25 #include "AliTPCPIDResponse.h"
26 #include "AliITSPIDResponse.h"
27 #include "AliTOFPIDResponse.h"
28 #include "AliAODpidUtil.h"
29 #include "AliESDtrack.h"
34 //------------------------------
35 AliAODPidHF::AliAODPidHF():
56 // Default constructor
58 fPLimit=new Double_t[fnPLimit];
59 fnSigma=new Double_t[fnNSigma];
60 fPriors=new Double_t[fnPriors];
62 for(Int_t i=0;i<fnNSigma;i++){
65 for(Int_t i=0;i<fnPriors;i++){
68 for(Int_t i=0;i<fnPLimit;i++){
73 //----------------------
74 AliAODPidHF::~AliAODPidHF()
77 // if(fPLimit) delete fPLimit;
78 // if(fnSigma) delete fnSigma;
79 // if(fPriors) delete fPriors;
81 //------------------------
82 AliAODPidHF::AliAODPidHF(const AliAODPidHF& pid) :
84 fnNSigma(pid.fnNSigma),
86 fTOFSigma(pid.fTOFSigma),
87 fnPriors(pid.fnPriors),
89 fnPLimit(pid.fnPLimit),
103 for(Int_t i=0;i<5;i++){
104 fPriors[i]=pid.fPriors[i];
109 //----------------------
110 Int_t AliAODPidHF::RawSignalPID(AliAODTrack *track, TString detector) const{
111 // raw PID for single detectors, returns the particle type with smaller sigma
113 if(detector.Contains("ITS")) return ApplyPidITSRaw(track,specie);
114 if(detector.Contains("TPC")) return ApplyPidTPCRaw(track,specie);
115 if(detector.Contains("TOF")) return ApplyPidTOFRaw(track,specie);
120 //---------------------------
121 Bool_t AliAODPidHF::IsKaonRaw(AliAODTrack *track, TString detector) const{
122 // checks if the track can be a kaon, raw PID applied for single detectors
125 if(detector.Contains("ITS")) specie=ApplyPidITSRaw(track,3);
126 if(detector.Contains("TPC")) specie=ApplyPidTPCRaw(track,3);
127 if(detector.Contains("TOF")) specie=ApplyPidTOFRaw(track,3);
129 if(specie==3) return kTRUE;
132 //---------------------------
133 Bool_t AliAODPidHF::IsPionRaw (AliAODTrack *track, TString detector) const{
134 // checks if the track can be a pion, raw PID applied for single detectors
138 if(detector.Contains("ITS")) specie=ApplyPidITSRaw(track,2);
139 if(detector.Contains("TPC")) specie=ApplyPidTPCRaw(track,2);
140 if(detector.Contains("TOF")) specie=ApplyPidTOFRaw(track,2);
142 if(specie==2) return kTRUE;
145 //---------------------------
146 Bool_t AliAODPidHF::IsProtonRaw (AliAODTrack *track, TString detector) const{
147 // checks if the track can be a proton raw PID applied for single detectors
150 if(detector.Contains("ITS")) specie=ApplyPidITSRaw(track,4);
151 if(detector.Contains("TPC")) specie=ApplyPidTPCRaw(track,4);
152 if(detector.Contains("TOF")) specie=ApplyPidTOFRaw(track,4);
154 if(specie==4) return kTRUE;
158 //--------------------------
159 Bool_t AliAODPidHF::IsElectronRaw(AliAODTrack *track, TString detector) const{
160 // checks if the track can be an electron raw PID applied for single detectors
163 if(detector.Contains("ITS")) specie=ApplyPidITSRaw(track,0);
164 if(detector.Contains("TPC")) specie=ApplyPidTPCRaw(track,0);
165 if(detector.Contains("TOF")) specie=ApplyPidTOFRaw(track,0);
167 if(specie==0) return kTRUE;
171 //--------------------------
172 Int_t AliAODPidHF::ApplyPidTPCRaw(AliAODTrack *track,Int_t specie) const{
173 // n-sigma cut, TPC PID
175 if(!CheckStatus(track,"TPC")) return 0;
176 AliAODPid *pidObj = track->GetDetPid();
178 Double_t dedx=pidObj->GetTPCsignal();
179 Double_t mom = pidObj->GetTPCmomentum();
180 AliTPCPIDResponse tpcResponse;
181 SetBetheBloch(tpcResponse);
184 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
185 Double_t nsigmaMax=fnSigma[0];
186 for(Int_t ipart=0;ipart<5;ipart++){
187 AliPID::EParticleType type=AliPID::EParticleType(ipart);
188 Double_t nsigma = TMath::Abs(tpcResponse.GetNumberOfSigmas(mom,dedx,track->GetTPCNcls(),type));
189 if((nsigma<nsigmaMax) && (nsigma<fnSigma[0])) {
194 }else{ // asks only for one particle specie
195 AliPID::EParticleType type=AliPID::EParticleType(specie);
196 Double_t nsigma = TMath::Abs(tpcResponse.GetNumberOfSigmas(mom,dedx,track->GetTPCNcls(),type));
197 if (nsigma>fnSigma[0]) {
207 //----------------------------
208 Int_t AliAODPidHF::ApplyPidITSRaw(AliAODTrack *track,Int_t specie) const{
209 // truncated mean, ITS PID
211 if(!CheckStatus(track,"ITS")) return 0;
213 Double_t mom=track->P();
214 AliAODPid *pidObj = track->GetDetPid();
216 Double_t dedx=pidObj->GetITSsignal();
217 UChar_t clumap=track->GetITSClusterMap();
218 Int_t nPointsForPid=0;
219 for(Int_t i=2; i<6; i++){
220 if(clumap&(1<<i)) ++nPointsForPid;
224 if(track->GetStatus() & AliESDtrack::kTPCin) isSA = kFALSE;
226 AliITSPIDResponse itsResponse;
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[4];
230 for(Int_t ipart=0;ipart<5;ipart++){
231 AliPID::EParticleType type=AliPID::EParticleType(ipart);
232 Double_t nsigma = TMath::Abs(itsResponse.GetNumberOfSigmas(mom,dedx,type,nPointsForPid,isSA));
233 if((nsigma<nsigmaMax) && (nsigma<fnSigma[4])) {
238 }else{ // asks only for one particle specie
239 AliPID::EParticleType type=AliPID::EParticleType(specie);
240 Double_t nsigma = TMath::Abs(itsResponse.GetNumberOfSigmas(mom,dedx,type));
241 if (nsigma>fnSigma[4]) {
249 //----------------------------
250 Int_t AliAODPidHF::ApplyPidTOFRaw(AliAODTrack *track,Int_t specie) const{
251 // n-sigma cut, TOF PID
253 if(!CheckStatus(track,"TOF")) return 0;
255 Double_t time[AliPID::kSPECIESN];
256 Double_t sigmaTOFPid[AliPID::kSPECIES];
257 AliAODPid *pidObj = track->GetDetPid();
258 pidObj->GetIntegratedTimes(time);
259 Double_t sigTOF=pidObj->GetTOFsignal();
260 pidObj->GetTOFpidResolution(sigmaTOFPid);
265 Double_t sigmaTOFtrack;
266 if (sigmaTOFPid[4]>0) sigmaTOFtrack=sigmaTOFPid[4];
267 else sigmaTOFtrack=fTOFSigma;
268 Double_t nsigmaMax=sigmaTOFtrack*fnSigma[3];
269 for(Int_t ipart=0;ipart<5;ipart++){
270 Double_t nsigma=TMath::Abs(sigTOF-time[ipart]);
271 if (sigmaTOFPid[ipart]>0) sigmaTOFtrack=sigmaTOFPid[ipart];
272 else sigmaTOFtrack=fTOFSigma; // backward compatibility for old AODs
273 if((nsigma<nsigmaMax) && (nsigma<fnSigma[3]*sigmaTOFtrack)) {
278 }else{ // asks only for one particle specie
279 Double_t nsigma=TMath::Abs(sigTOF-time[specie]);
280 Double_t sigmaTOFtrack;
281 if (sigmaTOFPid[specie]>0) sigmaTOFtrack=sigmaTOFPid[specie];
282 else sigmaTOFtrack=fTOFSigma; // backward compatibility for old AODs
283 if (nsigma>fnSigma[3]*sigmaTOFtrack) {
292 //------------------------------
293 void AliAODPidHF::CombinedProbability(AliAODTrack *track,Bool_t *type) const{
294 // combined PID stored inside the AOD track
296 const Double_t *pid=track->PID();
299 for (Int_t i=0; i<10; i++) {
300 if (pid[i]>max) {k=i; max=pid[i];}
303 if(k==2) type[0]=kTRUE;
304 if(k==3) type[1]=kTRUE;
305 if(k==4) type[2]=kTRUE;
309 //--------------------
310 void AliAODPidHF::BayesianProbability(AliAODTrack *track,Double_t *pid) const{
311 // bayesian PID for single detectors or combined
313 if(fITS && !fTPC && !fTOF) {BayesianProbabilityITS(track,pid);return;}
314 if(fTPC && !fITS && !fTOF) {BayesianProbabilityTPC(track,pid);return;}
315 if(fTOF && !fITS && !fTPC) {BayesianProbabilityTOF(track,pid);return;}
317 Double_t probITS[5]={1.,1.,1.,1.,1.};
318 Double_t probTPC[5]={1.,1.,1.,1.,1.};
319 Double_t probTOF[5]={1.,1.,1.,1.,1.};
320 if(fITS) BayesianProbabilityITS(track,probITS);
321 if(fTPC) BayesianProbabilityTPC(track,probTPC);
322 if(fTOF) BayesianProbabilityTOF(track,probTOF);
323 Double_t probTot[5]={0.,0.,0.,0.,0.};
324 for(Int_t i=0;i<5;i++){
325 probTot[i]=probITS[i]*probTPC[i]*probTOF[i];
327 for(Int_t i2=0;i2<5;i2++){
328 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]);
334 //------------------------------------
335 void AliAODPidHF::BayesianProbabilityITS(AliAODTrack *track,Double_t *prob) const{
337 // bayesian PID for ITS
339 Double_t itspid[AliPID::kSPECIES];
340 pid.MakeITSPID(track,itspid);
341 for(Int_t ind=0;ind<AliPID::kSPECIES;ind++){
342 if(fTOF || fTPC || fTRD){
343 prob[ind]=itspid[ind];
345 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]);
351 //------------------------------------
352 void AliAODPidHF::BayesianProbabilityTPC(AliAODTrack *track,Double_t *prob) const{
353 // bayesian PID for TPC
356 Double_t tpcpid[AliPID::kSPECIES];
357 pid.MakeTPCPID(track,tpcpid);
358 for(Int_t ind=0;ind<AliPID::kSPECIES;ind++){
359 if(fTOF || fITS || fTRD){
360 prob[ind]=tpcpid[ind];
362 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]);
368 //------------------------------------
369 void AliAODPidHF::BayesianProbabilityTOF(AliAODTrack *track,Double_t *prob) const{
370 // bayesian PID for TOF
373 Double_t tofpid[AliPID::kSPECIES];
374 pid.MakeTOFPID(track,tofpid);
375 for(Int_t ind=0;ind<AliPID::kSPECIES;ind++){
376 if(fTPC || fITS || fTRD){
377 prob[ind]=tofpid[ind];
379 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]);
385 //---------------------------------
386 void AliAODPidHF::BayesianProbabilityTRD(AliAODTrack *track,Double_t *prob) const{
387 // bayesian PID for TRD
390 Double_t trdpid[AliPID::kSPECIES];
391 pid.MakeTRDPID(track,trdpid);
392 for(Int_t ind=0;ind<AliPID::kSPECIES;ind++){
393 if(fTPC || fITS || fTOF){
394 prob[ind]=trdpid[ind];
396 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]);
402 //--------------------------------
403 Bool_t AliAODPidHF::CheckStatus(AliAODTrack *track,TString detectors) const{
405 // Quality cuts on the tracks, detector by detector
407 if(detectors.Contains("ITS")){
408 if ((track->GetStatus()&AliESDtrack::kITSin)==0) return kFALSE;
409 UChar_t clumap=track->GetITSClusterMap();
410 Int_t nPointsForPid=0;
411 for(Int_t i=2; i<6; i++){
412 if(clumap&(1<<i)) ++nPointsForPid;
414 if(nPointsForPid<3) return kFALSE;
417 if(detectors.Contains("TPC")){
418 if ((track->GetStatus()&AliESDtrack::kTPCin )==0) return kFALSE;
419 UShort_t nTPCClus=track->GetTPCClusterMap().CountBits();
420 if (nTPCClus<70) return kFALSE;
423 if(detectors.Contains("TOF")){
424 if ((track->GetStatus()&AliESDtrack::kTOFout )==0) return kFALSE;
425 if ((track->GetStatus()&AliESDtrack::kTIME )==0) return kFALSE;
426 if ((track->GetStatus()&AliESDtrack::kTOFpid )==0) return kFALSE;
427 if (!(track->GetStatus()&AliESDtrack::kTOFmismatch)==0) return kFALSE;
431 if(detectors.Contains("TRD")){
432 if ((track->GetStatus()&AliESDtrack::kTRDout )==0) return kFALSE;
433 AliAODPid *pidObj = track->GetDetPid();
434 Float_t *mom=pidObj->GetTRDmomentum();
436 for(Int_t iPl=0;iPl<6;iPl++){
437 if(mom[iPl]>0.) ntracklets++;
439 if(ntracklets<4) return kFALSE;
444 //--------------------------------------------
445 Bool_t AliAODPidHF::TPCRawAsym(AliAODTrack* track,Int_t specie) const{
446 // TPC nsigma cut PID, different sigmas in different p bins
448 if(!CheckStatus(track,"TPC")) return kFALSE;
449 AliAODPid *pidObj = track->GetDetPid();
450 Double_t mom = pidObj->GetTPCmomentum();
451 Double_t dedx=pidObj->GetTPCsignal();
453 AliTPCPIDResponse tpcResponse;
454 SetBetheBloch(tpcResponse);
455 AliPID::EParticleType type=AliPID::EParticleType(specie);
456 Double_t nsigma = TMath::Abs(tpcResponse.GetNumberOfSigmas(mom,dedx,track->GetTPCNcls(),type));
458 if(mom<fPLimit[0] && nsigma<fnSigma[0]) return kTRUE;
459 if(mom<fPLimit[1] && mom>fPLimit[0] && nsigma<fnSigma[1]) return kTRUE;
460 if(mom>fPLimit[1] && nsigma<fnSigma[2]) return kTRUE;
465 Int_t AliAODPidHF::MatchTPCTOF(AliAODTrack *track,Int_t mode,Int_t specie,Bool_t compat){
466 // combination of the PID info coming from TPC and TOF
468 //TOF || TPC (a la' Andrea R.)
470 // for the single detectors: -1 = kFALSE, 1 = kTRUE, 0 = compatible
471 // the method returns the sum of the response of the 2 detectors
472 if(fTPC && fTOF) {if(!CheckStatus(track,"TPC") && !CheckStatus(track,"TOF")) return 0;}
477 if(CheckStatus(track,"TPC")) {
479 if(TPCRawAsym(track,specie)) {
485 if(specie==2 && IsPionRaw(track,"TPC")) {
490 if(specie==3 && IsKaonRaw(track,"TPC")) {
495 if(specie==4 && IsProtonRaw(track,"TPC")) {
504 if(compat && tTPCinfo<0){
505 Double_t sig0tmp=fnSigma[0];
507 if(specie==2 && IsPionRaw(track,"TPC")) tTPCinfo=0;
508 if(specie==3 && IsKaonRaw(track,"TPC")) tTPCinfo=0;
509 if(specie==4 && IsProtonRaw(track,"TPC")) tTPCinfo=0;
518 if(!CheckStatus(track,"TOF") && fTPC) return tTPCinfo;
522 if(specie==2 && IsPionRaw(track,"TOF")) tTOFinfo=1;
523 if(specie==3 && IsKaonRaw(track,"TOF")) tTOFinfo=1;
524 if(specie==4 && IsProtonRaw(track,"TOF")) tTOFinfo=1;
526 if(compat && tTOFinfo>0){
527 Double_t ptrack=track->P();
528 if(ptrack>1.5) tTOFinfo=0;
532 if(tTPCinfo+tTOFinfo==0 && fITS){
533 if(!CheckStatus(track,"ITS")) return tTPCinfo+tTOFinfo;
535 if(specie==2 && IsPionRaw(track,"TOF")) tITSinfo=1;
536 if(specie==3 && IsKaonRaw(track,"TOF")) tITSinfo=1;
537 if(specie==4 && IsProtonRaw(track,"TOF")) tITSinfo=1;
541 return tTPCinfo+tTOFinfo;
544 //TPC & TOF (a la' Yifei)
545 // convention: -1 = kFALSE, 1 = kTRUE, 0 = not identified
548 if(fTPC && CheckStatus(track,"TPC")) {
551 if(!TPCRawAsym(track,specie)) tTPCinfo=-1;
553 if(specie==2 && !IsPionRaw(track,"TPC")) tTPCinfo=-1;
554 if(specie==3 && !IsKaonRaw(track,"TPC")) tTPCinfo=-1;
555 if(specie==4 && !IsProtonRaw(track,"TPC")) tTPCinfo=-1;
561 if(fTPC && !CheckStatus(track,"TOF")) return tTPCinfo;
563 if(specie==2 && !IsPionRaw(track,"TOF")) tTOFinfo=-1;
564 if(specie==3 && !IsKaonRaw(track,"TOF")) tTOFinfo=-1;
565 if(specie==4 && !IsProtonRaw(track,"TOF")) tTOFinfo=-1;
568 if(tTOFinfo==1 && tTPCinfo==1) return 1;
570 if(tTPCinfo+tTOFinfo==0 && fITS){
571 if(!CheckStatus(track,"ITS")) return tTPCinfo+tTOFinfo;
573 if(specie==2 && IsPionRaw(track,"TOF")) tITSinfo=1;
574 if(specie==3 && IsKaonRaw(track,"TOF")) tITSinfo=1;
575 if(specie==4 && IsProtonRaw(track,"TOF")) tITSinfo=1;
584 //TPC for p<fPLimit[0], TOF for p>=fPLimit[0] (a la' Andrea A.)
585 // convention (temporary): -1 = kFALSE, 1 = kTRUE, 0 = not identified
587 if(fTPC && fTOF) if(!CheckStatus(track,"TPC") && !CheckStatus(track,"TOF")) return 0;
589 Double_t ptrack=track->P();
594 if(ptrack>=fPLimit[0] && ptrack<fPLimit[1] && fTPC) {
595 if(!CheckStatus(track,"TPC")) return 0;
597 if(TPCRawAsym(track,specie)) tTPCinfo=1;
599 if(specie==2 && IsPionRaw(track,"TPC")) tTPCinfo=1;
600 if(specie==3 && IsKaonRaw(track,"TPC")) tTPCinfo=1;
601 if(specie==4 && IsProtonRaw(track,"TPC")) tTPCinfo=1;
607 if(ptrack>=fPLimit[1] && fTOF){
608 if(!CheckStatus(track,"TOF")) return 0;
609 if(specie==2 && IsPionRaw(track,"TOF")) tTOFinfo=1;
610 if(specie==3 && IsKaonRaw(track,"TOF")) tTOFinfo=1;
611 if(specie==4 && IsProtonRaw(track,"TOF")) tTOFinfo=1;
616 if(ptrack<fPLimit[0] && fITS){
617 if(!CheckStatus(track,"ITS")) return 0;
618 if(specie==2 && IsPionRaw(track,"ITS")) tITSinfo=1;
619 if(specie==3 && IsKaonRaw(track,"ITS")) tITSinfo=1;
620 if(specie==4 && IsProtonRaw(track,"ITS")) tITSinfo=1;
629 //----------------------------------
630 Int_t AliAODPidHF::MakeRawPid(AliAODTrack *track, Int_t specie){
631 // general method to compute PID
633 return MatchTPCTOF(track,fMatch,specie,fCompat);
635 if(fTPC && !fTOF && !fITS) {
636 Int_t tTPCres=ApplyPidTPCRaw(track,specie);
637 if(tTPCres==specie){return 1;}else{return tTPCres;};
639 AliError("You should enable just one detector if you don't want to match");
642 if(fTOF && !fTPC && !fITS) {
643 Int_t tTOFres=ApplyPidTOFRaw(track,specie);
644 if(tTOFres==specie){return 1;}else{return tTOFres;};
646 AliError("You should enable just one detector if you don't want to match");
650 if(fITS && !fTPC && !fTOF) {
651 Int_t tITSres=ApplyPidITSRaw(track,specie);
652 if(tITSres==specie){return 1;}else{return tITSres;};
654 AliError("You should enable just one detector if you don't want to match");
660 //--------------------------------------------
661 void AliAODPidHF::SetBetheBloch(AliTPCPIDResponse tpcResp) const{
663 Double_t alephParameters[5];
665 alephParameters[0] = 2.15898e+00/50.;
666 alephParameters[1] = 1.75295e+01;
667 alephParameters[2] = 3.40030e-09;
668 alephParameters[3] = 1.96178e+00;
669 alephParameters[4] = 3.91720e+00;
675 alephParameters[0] =1.34490e+00/50;
676 alephParameters[1] = 2.69455e+01;
677 alephParameters[2] = TMath::Exp(-2.97552+01);
678 alephParameters[3] = 2.35339e+00;
679 alephParameters[4] = 5.98079e+00;
683 alephParameters[0] = 1.25202/50.;
684 alephParameters[1] = 2.74992e+01;
685 alephParameters[2] = TMath::Exp(-3.31517e+01);
686 alephParameters[3] = 2.46246;
687 alephParameters[4] = 6.78938;
690 alephParameters[0] = 0.0283086/0.97;
691 alephParameters[1] = 2.63394e+01;
692 alephParameters[2] = 5.04114e-11;
693 alephParameters[3] = 2.12543e+00;
694 alephParameters[4] = 4.88663e+00;
700 tpcResp.SetBetheBlochParameters(alephParameters[0],alephParameters[1],alephParameters[2],alephParameters[3],alephParameters[4]);
706 //-----------------------
707 Bool_t AliAODPidHF::IsTOFPiKexcluded(AliAODTrack *track,Double_t nsigmaK){
710 if(!CheckStatus(track,"TOF")) return 0;
712 Double_t time[AliPID::kSPECIESN];
713 Double_t sigmaTOFPid[AliPID::kSPECIES];
714 AliAODPid *pidObj = track->GetDetPid();
715 pidObj->GetIntegratedTimes(time);
716 Double_t sigTOF=pidObj->GetTOFsignal();
717 pidObj->GetTOFpidResolution(sigmaTOFPid);
718 Double_t sigmaTOFtrack;
719 if (sigmaTOFPid[3]>0) sigmaTOFtrack=sigmaTOFPid[3];
720 else sigmaTOFtrack=fTOFSigma; // backward compatibility for old AODs
722 if((sigTOF-time[3])>nsigmaK*sigmaTOFtrack)return kTRUE;// K, Pi excluded (->LIKELY A PROTON)