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8df8e382 | 1 | /************************************************************************* |
2 | * Copyright(c) 1998-2009, 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 | ||
16 | /////////////////////////////////////////////////////////////////////////// | |
17 | // Dielectron PID // | |
18 | // // | |
19 | // // | |
20 | /* | |
21 | Detailed description | |
22 | ||
23 | ||
24 | */ | |
25 | // // | |
26 | /////////////////////////////////////////////////////////////////////////// | |
27 | ||
28 | #include <TMath.h> | |
29 | #include <TF1.h> | |
48609e3d | 30 | #include <TGraph.h> |
8df8e382 | 31 | |
164bfb53 | 32 | #include <AliVTrack.h> |
5720c765 | 33 | #include <AliVCluster.h> |
8df8e382 | 34 | #include <AliLog.h> |
ffbede40 | 35 | #include <AliExternalTrackParam.h> |
5720c765 | 36 | #include <AliPIDResponse.h> |
6d5dea7c | 37 | #include <AliTRDPIDResponse.h> |
5720c765 | 38 | #include <AliESDtrack.h> //!!!!! Remove once Eta correction is treated in the tender |
0c09cae4 | 39 | #include <AliAODTrack.h> |
40 | #include <AliAODPid.h> | |
8df8e382 | 41 | |
42 | #include "AliDielectronVarManager.h" | |
43 | ||
44 | #include "AliDielectronPID.h" | |
45 | ||
46 | ClassImp(AliDielectronPID) | |
47 | ||
48609e3d | 48 | TGraph *AliDielectronPID::fgFitCorr=0x0; |
49 | Double_t AliDielectronPID::fgCorr=0.0; | |
d327d9cd | 50 | Double_t AliDielectronPID::fgCorrdEdx=1.0; |
5720c765 | 51 | TF1 *AliDielectronPID::fgFunEtaCorr=0x0; |
d327d9cd | 52 | TGraph *AliDielectronPID::fgdEdxRunCorr=0x0; |
48609e3d | 53 | |
8df8e382 | 54 | AliDielectronPID::AliDielectronPID() : |
55 | AliAnalysisCuts(), | |
56 | fNcuts(0), | |
5720c765 | 57 | fPIDResponse(0x0) |
8df8e382 | 58 | { |
59 | // | |
60 | // Default Constructor | |
61 | // | |
62 | for (Int_t icut=0; icut<kNmaxPID; ++icut){ | |
63 | fDetType[icut]=kTPC; | |
64 | fPartType[icut]=AliPID::kPion; | |
65 | fNsigmaLow[icut]=0; | |
66 | fNsigmaUp[icut]=0; | |
5720c765 | 67 | fmin[icut]=0; |
68 | fmax[icut]=0; | |
8df8e382 | 69 | fExclude[icut]=kFALSE; |
70 | fFunUpperCut[icut]=0x0; | |
71 | fFunLowerCut[icut]=0x0; | |
61d106d3 | 72 | fRequirePIDbit[icut]=0; |
5720c765 | 73 | fActiveCuts[icut]=-1; |
88204efa | 74 | fSigmaFunLow[icut]=0; |
75 | fSigmaFunUp[icut]=0; | |
76 | fFunSigma[icut]=0x0; | |
8df8e382 | 77 | } |
78 | } | |
79 | ||
80 | //______________________________________________ | |
81 | AliDielectronPID::AliDielectronPID(const char* name, const char* title) : | |
82 | AliAnalysisCuts(name, title), | |
83 | fNcuts(0), | |
5720c765 | 84 | fPIDResponse(0x0) |
8df8e382 | 85 | { |
86 | // | |
87 | // Named Constructor | |
88 | // | |
89 | for (Int_t icut=0; icut<kNmaxPID; ++icut){ | |
90 | fDetType[icut]=kTPC; | |
91 | fPartType[icut]=AliPID::kPion; | |
92 | fNsigmaLow[icut]=0; | |
93 | fNsigmaUp[icut]=0; | |
5720c765 | 94 | fmin[icut]=0; |
95 | fmax[icut]=0; | |
8df8e382 | 96 | fExclude[icut]=kFALSE; |
97 | fFunUpperCut[icut]=0x0; | |
98 | fFunLowerCut[icut]=0x0; | |
61d106d3 | 99 | fRequirePIDbit[icut]=0; |
5720c765 | 100 | fActiveCuts[icut]=0; |
88204efa | 101 | fSigmaFunLow[icut]=0; |
102 | fSigmaFunUp[icut]=0; | |
103 | fFunSigma[icut]=0x0; | |
8df8e382 | 104 | } |
105 | } | |
106 | ||
107 | //______________________________________________ | |
108 | AliDielectronPID::~AliDielectronPID() | |
109 | { | |
110 | // | |
111 | // Default Destructor | |
112 | // | |
113 | } | |
114 | ||
115 | //______________________________________________ | |
116 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, Double_t nSigmaUp/*=-99999.*/, | |
5720c765 | 117 | Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/, |
118 | UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/) | |
8df8e382 | 119 | { |
120 | // | |
121 | // Add a pid nsigma cut | |
5720c765 | 122 | // use response of detector 'det' in the range ['min'] to ['max'] for var |
123 | // use a sigma band between 'nSigmaLow' and 'nSigmaUp' | |
8df8e382 | 124 | // if nSigmaUp==-99999. then nSigmaLow will be uesd as a symmetric band +- nSigmaLow |
125 | // specify whether to 'exclude' the given band | |
126 | // | |
127 | ||
45b2b1b8 | 128 | if (fNcuts>=kNmaxPID){ |
8df8e382 | 129 | AliError(Form("only %d pid cut ranges allowed",kNmaxPID)); |
45b2b1b8 | 130 | return; |
8df8e382 | 131 | } |
132 | if (TMath::Abs(nSigmaUp+99999.)<1e-20){ | |
133 | nSigmaUp=TMath::Abs(nSigmaLow); | |
134 | nSigmaLow=-1.*nSigmaUp; | |
135 | } | |
136 | fDetType[fNcuts]=det; | |
137 | fPartType[fNcuts]=type; | |
138 | fNsigmaLow[fNcuts]=nSigmaLow; | |
139 | fNsigmaUp[fNcuts]=nSigmaUp; | |
5720c765 | 140 | fmin[fNcuts]=min; |
141 | fmax[fNcuts]=max; | |
8df8e382 | 142 | fExclude[fNcuts]=exclude; |
61d106d3 | 143 | fRequirePIDbit[fNcuts]=pidBitType; |
5720c765 | 144 | fActiveCuts[fNcuts]=(var==-1 ? AliDielectronVarManager::kP : var); |
145 | ||
fd6ebd85 | 146 | AliDebug(1,Form("Add PID cut %d: sigma [% .1f,% .1f] \t cut [% .1f,% .f] \t var %d->%s \n", |
147 | fNcuts,nSigmaLow,nSigmaUp,min,max,fActiveCuts[fNcuts],AliDielectronVarManager::GetValueName(fActiveCuts[fNcuts]))); | |
8df8e382 | 148 | |
5720c765 | 149 | ++fNcuts; |
150 | ||
8df8e382 | 151 | } |
152 | ||
153 | //______________________________________________ | |
154 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, TF1 * const funUp, | |
5720c765 | 155 | Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/, |
156 | UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/) | |
8df8e382 | 157 | { |
158 | // | |
159 | // cut using a TF1 as upper cut | |
160 | // | |
161 | if (funUp==0x0){ | |
162 | AliError("A valid function is required for the upper cut. Not adding the cut!"); | |
163 | return; | |
164 | } | |
165 | fFunUpperCut[fNcuts]=funUp; | |
5720c765 | 166 | AddCut(det,type,nSigmaLow,0.,min,max,exclude,pidBitType,var); |
8df8e382 | 167 | } |
168 | ||
169 | //______________________________________________ | |
170 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, TF1 * const funLow, Double_t nSigmaUp, | |
5720c765 | 171 | Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/, |
172 | UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/) | |
8df8e382 | 173 | { |
174 | // | |
175 | // cut using a TF1 as lower cut | |
176 | // | |
177 | if (funLow==0x0){ | |
178 | AliError("A valid function is required for the lower cut. Not adding the cut!"); | |
179 | return; | |
180 | } | |
181 | fFunLowerCut[fNcuts]=funLow; | |
5720c765 | 182 | AddCut(det,type,0.,nSigmaUp,min,max,exclude,pidBitType,var); |
8df8e382 | 183 | } |
184 | ||
185 | //______________________________________________ | |
186 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, TF1 * const funLow, TF1 * const funUp, | |
5720c765 | 187 | Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/, |
188 | UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/) | |
8df8e382 | 189 | { |
190 | // | |
191 | // cut using a TF1 as lower and upper cut | |
192 | // | |
193 | if ( (funUp==0x0) || (funLow==0x0) ){ | |
194 | AliError("A valid function is required for upper and lower cut. Not adding the cut!"); | |
195 | return; | |
196 | } | |
197 | fFunUpperCut[fNcuts]=funUp; | |
198 | fFunLowerCut[fNcuts]=funLow; | |
5720c765 | 199 | AddCut(det,type,0.,0.,min,max,exclude,pidBitType,var); |
8df8e382 | 200 | } |
201 | ||
88204efa | 202 | //______________________________________________ |
203 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, Double_t nSigmaUp, | |
204 | Double_t min, Double_t max, Bool_t exclude, | |
205 | UInt_t pidBitType, TF1 * const funSigma) | |
206 | { | |
207 | // | |
208 | // cut using a TF1 as lower cut | |
209 | // | |
210 | if (funSigma==0x0){ | |
211 | AliError("A valid function is required for the sigma cut. Not adding the cut!"); | |
212 | return; | |
213 | } | |
214 | fFunSigma[fNcuts]=funSigma; | |
215 | fSigmaFunLow[fNcuts]=min; | |
216 | fSigmaFunUp[fNcuts]=max; | |
217 | ||
218 | AddCut(det,type,nSigmaLow,nSigmaUp,0,0,exclude,pidBitType,-1); | |
219 | } | |
220 | ||
8df8e382 | 221 | //______________________________________________ |
222 | Bool_t AliDielectronPID::IsSelected(TObject* track) | |
223 | { | |
224 | // | |
225 | // perform PID cuts | |
226 | // | |
227 | ||
228 | //loop over all cuts | |
164bfb53 | 229 | AliVTrack *part=static_cast<AliVTrack*>(track); |
5720c765 | 230 | AliESDtrack *esdTrack=0x0; |
0c09cae4 | 231 | AliAODTrack *aodTrack=0x0; |
5720c765 | 232 | Double_t origdEdx=-1; |
8df8e382 | 233 | |
5720c765 | 234 | // apply ETa correction, remove once this is in the tender |
0c09cae4 | 235 | if( (part->IsA() == AliESDtrack::Class()) ){ |
5720c765 | 236 | esdTrack=static_cast<AliESDtrack*>(part); |
237 | origdEdx=esdTrack->GetTPCsignal(); | |
d327d9cd | 238 | esdTrack->SetTPCsignal(origdEdx/GetEtaCorr(esdTrack)/fgCorrdEdx,esdTrack->GetTPCsignalSigma(),esdTrack->GetTPCsignalN()); |
0c09cae4 | 239 | } else if ( (part->IsA() == AliAODTrack::Class()) ){ |
240 | aodTrack=static_cast<AliAODTrack*>(track); | |
241 | AliAODPid *pid=const_cast<AliAODPid*>(aodTrack->GetDetPid()); | |
423cc7ef | 242 | if (pid){ |
243 | origdEdx=pid->GetTPCsignal(); | |
244 | pid->SetTPCsignal(origdEdx/GetEtaCorr(aodTrack)/fgCorrdEdx); | |
245 | } | |
5720c765 | 246 | } |
5720c765 | 247 | |
248 | //Fill values | |
249 | Double_t values[AliDielectronVarManager::kNMaxValues]; | |
250 | AliDielectronVarManager::Fill(track,values); | |
8df8e382 | 251 | |
5720c765 | 252 | Bool_t selected=kFALSE; |
253 | fPIDResponse=AliDielectronVarManager::GetPIDResponse(); | |
254 | for (UChar_t icut=0; icut<fNcuts; ++icut){ | |
255 | Double_t min=fmin[icut]; | |
256 | Double_t max=fmax[icut]; | |
257 | Double_t val=values[fActiveCuts[icut]]; | |
258 | ||
259 | // test var range. In case min==max do not cut | |
260 | if ( (TMath::Abs(min-max)>1e-20) && (val<min || val>=max) ) continue; | |
88204efa | 261 | |
262 | ||
263 | // check if fFunSigma is set, then check if 'part' is in sigma range of the function | |
264 | if(fFunSigma[icut]){ | |
265 | val= fPIDResponse->NumberOfSigmasTPC(part, fPartType[icut]); | |
266 | if (fPartType[icut]==AliPID::kElectron){ | |
267 | val-=fgCorr; | |
268 | } | |
269 | min= fFunSigma[icut]->Eval(part->GetTPCmomentum())+fSigmaFunLow[icut]; | |
270 | max= fFunSigma[icut]->Eval(part->GetTPCmomentum())+fSigmaFunUp[icut]; | |
271 | if(val<min || val>=max) continue; | |
272 | } | |
273 | ||
8df8e382 | 274 | switch (fDetType[icut]){ |
275 | case kITS: | |
276 | selected = IsSelectedITS(part,icut); | |
277 | break; | |
278 | case kTPC: | |
279 | selected = IsSelectedTPC(part,icut); | |
280 | break; | |
281 | case kTRD: | |
282 | selected = IsSelectedTRD(part,icut); | |
283 | break; | |
5720c765 | 284 | case kTRDeleEff: |
285 | selected = IsSelectedTRDeleEff(part,icut); | |
286 | break; | |
6d5dea7c | 287 | case kTRDeleEff2D: |
288 | selected = IsSelectedTRDeleEff(part,icut,AliTRDPIDResponse::kLQ2D); | |
289 | break; | |
8df8e382 | 290 | case kTOF: |
291 | selected = IsSelectedTOF(part,icut); | |
292 | break; | |
5720c765 | 293 | case kEMCAL: |
294 | selected = IsSelectedEMCAL(part,icut); | |
295 | break; | |
296 | } | |
297 | if (!selected) { | |
298 | if (esdTrack) esdTrack->SetTPCsignal(origdEdx,esdTrack->GetTPCsignalSigma(),esdTrack->GetTPCsignalN()); | |
0c09cae4 | 299 | else if (aodTrack){ |
300 | AliAODPid *pid=const_cast<AliAODPid*>(aodTrack->GetDetPid()); | |
423cc7ef | 301 | if (pid) pid->SetTPCsignal(origdEdx); |
0c09cae4 | 302 | } |
5720c765 | 303 | |
304 | return kFALSE; | |
8df8e382 | 305 | } |
8df8e382 | 306 | } |
307 | ||
5720c765 | 308 | if (esdTrack) esdTrack->SetTPCsignal(origdEdx,esdTrack->GetTPCsignalSigma(),esdTrack->GetTPCsignalN()); |
0c09cae4 | 309 | else if (aodTrack){ |
310 | AliAODPid *pid=const_cast<AliAODPid*>(aodTrack->GetDetPid()); | |
423cc7ef | 311 | if (pid) pid->SetTPCsignal(origdEdx); |
0c09cae4 | 312 | } |
8df8e382 | 313 | return selected; |
314 | } | |
315 | ||
316 | //______________________________________________ | |
ffbede40 | 317 | Bool_t AliDielectronPID::IsSelectedITS(AliVTrack * const part, Int_t icut) |
8df8e382 | 318 | { |
319 | // | |
320 | // ITS part of the PID check | |
321 | // Don't accept the track if there was no pid bit set | |
322 | // | |
8df8e382 | 323 | |
5720c765 | 324 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&!(part->GetStatus()&AliVTrack::kITSpid)) return kFALSE; |
325 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&!(part->GetStatus()&AliVTrack::kITSpid)) return kTRUE; | |
ffbede40 | 326 | |
327 | Double_t mom=part->P(); | |
164bfb53 | 328 | |
5720c765 | 329 | Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasITS(part, fPartType[icut]); |
ffbede40 | 330 | |
331 | // test if we are supposed to use a function for the cut | |
332 | if (fFunUpperCut[icut]) fNsigmaUp[icut] =fFunUpperCut[icut]->Eval(mom); | |
333 | if (fFunLowerCut[icut]) fNsigmaLow[icut]=fFunLowerCut[icut]->Eval(mom); | |
334 | ||
8df8e382 | 335 | Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut]; |
336 | return selected; | |
337 | } | |
338 | ||
339 | //______________________________________________ | |
ffbede40 | 340 | Bool_t AliDielectronPID::IsSelectedTPC(AliVTrack * const part, Int_t icut) |
8df8e382 | 341 | { |
342 | // | |
343 | // TPC part of the PID check | |
344 | // Don't accept the track if there was no pid bit set | |
345 | // | |
5720c765 | 346 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&!(part->GetStatus()&AliVTrack::kTPCpid)) return kFALSE; |
347 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&!(part->GetStatus()&AliVTrack::kTPCpid)) return kTRUE; | |
48609e3d | 348 | |
5720c765 | 349 | Double_t mom=part->GetTPCmomentum(); |
ffbede40 | 350 | |
5720c765 | 351 | Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasTPC(part, fPartType[icut]); |
352 | ||
2a14a7b1 | 353 | if (fPartType[icut]==AliPID::kElectron){ |
354 | numberOfSigmas-=fgCorr; | |
8df8e382 | 355 | } |
ffbede40 | 356 | |
357 | // test if we are supposed to use a function for the cut | |
358 | if (fFunUpperCut[icut]) fNsigmaUp[icut] =fFunUpperCut[icut]->Eval(mom); | |
359 | if (fFunLowerCut[icut]) fNsigmaLow[icut]=fFunLowerCut[icut]->Eval(mom); | |
360 | ||
8df8e382 | 361 | Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut]; |
362 | return selected; | |
363 | } | |
364 | ||
365 | //______________________________________________ | |
5720c765 | 366 | Bool_t AliDielectronPID::IsSelectedTRD(AliVTrack * const part, Int_t icut) |
8df8e382 | 367 | { |
368 | // | |
369 | // TRD part of the pid check | |
5720c765 | 370 | // the TRD checks on the probabilities. |
371 | // | |
372 | ||
373 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&!(part->GetStatus()&AliVTrack::kTRDpid)) return kFALSE; | |
374 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&!(part->GetStatus()&AliVTrack::kTRDpid)) return kTRUE; | |
375 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable && (part->GetTRDntrackletsPID()<4)) return kTRUE; | |
376 | ||
377 | Double_t p[AliPID::kSPECIES]={0.}; | |
378 | fPIDResponse->ComputeTRDProbability(part,AliPID::kSPECIES,p); | |
379 | Float_t particleProb=p[fPartType[icut]]; | |
380 | ||
381 | Bool_t selected=((particleProb>=fNsigmaLow[icut])&&(particleProb<=fNsigmaUp[icut]))^fExclude[icut]; | |
382 | return selected; | |
383 | } | |
384 | ||
385 | //______________________________________________ | |
6d5dea7c | 386 | Bool_t AliDielectronPID::IsSelectedTRDeleEff(AliVTrack * const part, Int_t icut, AliTRDPIDResponse::ETRDPIDMethod PIDmethod) |
5720c765 | 387 | { |
8df8e382 | 388 | // |
5720c765 | 389 | // TRD part of the pid check using electron efficiency requirement |
390 | // in this case the upper limit as well as the particle specie is ignored | |
391 | // and the lower limit regarded as the requested electron efficiency | |
392 | // | |
393 | ||
394 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&!(part->GetStatus()&AliVTrack::kTRDpid)) return kFALSE; | |
395 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&!(part->GetStatus()&AliVTrack::kTRDpid)) return kTRUE; | |
396 | ||
6d5dea7c | 397 | Double_t centrality = -1.; |
398 | if(part->IsA() == AliESDtrack::Class()) | |
399 | centrality=(const_cast<AliESDEvent*>( (static_cast<const AliESDtrack*>(part))->GetESDEvent()) )->GetCentrality()->GetCentralityPercentile("V0M"); | |
400 | if(part->IsA() == AliAODTrack::Class()) | |
401 | centrality=(const_cast<AliAODEvent*>( (static_cast<const AliAODTrack*>(part))->GetAODEvent()) )->GetCentrality()->GetCentralityPercentile("V0M"); | |
402 | ||
403 | Bool_t selected=fPIDResponse->IdentifiedAsElectronTRD(part,fNsigmaLow[icut], centrality, PIDmethod)^fExclude[icut]; | |
5720c765 | 404 | return selected; |
8df8e382 | 405 | } |
406 | ||
407 | //______________________________________________ | |
ffbede40 | 408 | Bool_t AliDielectronPID::IsSelectedTOF(AliVTrack * const part, Int_t icut) |
8df8e382 | 409 | { |
410 | // | |
411 | // TOF part of the PID check | |
412 | // Don't accept the track if there was no pid bit set | |
413 | // | |
8df8e382 | 414 | |
5720c765 | 415 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&!(part->GetStatus()&AliVTrack::kTOFpid)) return kFALSE; |
416 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&!(part->GetStatus()&AliVTrack::kTOFpid)) return kTRUE; | |
417 | ||
418 | Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasTOF(part, fPartType[icut]); | |
8df8e382 | 419 | |
420 | Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut]; | |
421 | return selected; | |
422 | } | |
423 | ||
5720c765 | 424 | //______________________________________________ |
425 | Bool_t AliDielectronPID::IsSelectedEMCAL(AliVTrack * const part, Int_t icut) | |
426 | { | |
427 | // | |
428 | // emcal pid selecttion | |
429 | // | |
430 | ||
431 | //TODO: correct way to check for emcal pid? | |
432 | Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasEMCAL(part, fPartType[icut]); | |
433 | ||
434 | Bool_t hasPID=numberOfSigmas>-998.; | |
435 | ||
436 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&!hasPID) return kFALSE; | |
437 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&!hasPID) return kTRUE; | |
438 | ||
439 | ||
440 | Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut]; | |
441 | return selected; | |
442 | } | |
443 | ||
8df8e382 | 444 | //______________________________________________ |
445 | void AliDielectronPID::SetDefaults(Int_t def){ | |
446 | // | |
447 | // initialise default pid strategies | |
448 | // | |
449 | ||
450 | if (def==0){ | |
451 | // 2sigma bands TPC: | |
452 | // - include e | |
453 | // - exclude mu,K,pi,p | |
454 | // -complete p range | |
455 | AddCut(kTPC,AliPID::kElectron,2); | |
456 | AddCut(kTPC,AliPID::kMuon,-2.,2.,0.,0.,kTRUE); | |
457 | AddCut(kTPC,AliPID::kPion,-2.,2.,0.,0.,kTRUE); | |
458 | AddCut(kTPC,AliPID::kKaon,-2.,2.,0.,0.,kTRUE); | |
459 | AddCut(kTPC,AliPID::kProton,-2.,2.,0.,0.,kTRUE); | |
460 | } else if (def==1) { | |
461 | // 2sigma bands TPC: | |
462 | // - include e 0<p<inf | |
463 | // - exclude mu,K,pi,p 0<p<2 | |
8df8e382 | 464 | AddCut(kTPC,AliPID::kElectron,2.); |
465 | AddCut(kTPC,AliPID::kMuon,-2.,2.,0.,2.,kTRUE); | |
466 | AddCut(kTPC,AliPID::kPion,-2.,2.,0.,2.,kTRUE); | |
467 | AddCut(kTPC,AliPID::kKaon,-2.,2.,0.,2.,kTRUE); | |
468 | AddCut(kTPC,AliPID::kProton,-2.,2.,0.,2.,kTRUE); | |
469 | ||
470 | } else if (def==2) { | |
471 | // include 2sigma e TPC | |
472 | // 3sigma bands TOF | |
473 | // - exclude K,P | |
48609e3d | 474 | AddCut(kTPC,AliPID::kElectron,-3.,3.); |
3505bfad | 475 | AddCut(kTPC,AliPID::kPion,-3.,3.,0.,0.,kTRUE); |
476 | AddCut(kTPC,AliPID::kProton,-3.,3.,0.,0.,kTRUE); | |
8df8e382 | 477 | |
5720c765 | 478 | } else if (def==3 || def==4) { // def3 and def4 are the same?? |
8df8e382 | 479 | // include 2sigma e TPC |
480 | // 3sigma bands TOF | |
481 | // - exclude K 0<p<1 | |
482 | // - exclude P 0<p<2 | |
483 | AddCut(kTPC,AliPID::kElectron,2); | |
484 | AddCut(kTOF,AliPID::kKaon,-3.,3.,0.,1.,kTRUE); | |
485 | AddCut(kTOF,AliPID::kProton,-6.,6.,0.,1.,kTRUE); | |
486 | AddCut(kTOF,AliPID::kProton,-3.,3.,1.,2.,kTRUE); | |
487 | ||
8df8e382 | 488 | } else if (def==5) { |
489 | AddCut(kTPC,AliPID::kElectron,-0.5,3); | |
490 | AddCut(kTOF,AliPID::kElectron,-3,3,0,1.5); | |
491 | } else if (def==6) { | |
492 | // lower cut TPC: parametrisation by HFE | |
493 | // upper cut TPC: 3 sigma | |
494 | // TOF ele band 3sigma 0<p<1.5GeV | |
495 | TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)", 0, 100); | |
496 | lowerCut->SetParameters(-2.7,-0.4357); | |
497 | AddCut(kTPC,AliPID::kElectron,lowerCut,3.); | |
498 | AddCut(kTOF,AliPID::kElectron,-3,3,0,1.5); | |
499 | } else if (def==7) { | |
61d106d3 | 500 | // wide TPC cut |
8df8e382 | 501 | // TOF ele band 3sigma 0<p<1.5GeV |
502 | AddCut(kTPC,AliPID::kElectron,10.); | |
503 | AddCut(kTOF,AliPID::kElectron,-3,3,0,1.5); | |
61d106d3 | 504 | } else if (def==8) { |
505 | // TOF 5 sigma inclusion if TOFpid available | |
506 | // this should reduce K,p,Pi to a large extent | |
507 | AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable); | |
508 | } else if (def==9) { | |
509 | // lower cut TPC: parametrisation by HFE | |
510 | // upper cut TPC: 3 sigma | |
511 | // TOF 5 sigma inclusion if TOFpid available | |
512 | // this should reduce K,p,Pi to a large extent | |
513 | TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)", 0, 100); | |
164bfb53 | 514 | lowerCut->SetParameters(-2.65,-0.6757); |
515 | AddCut(kTPC,AliPID::kElectron,lowerCut,4.); | |
61d106d3 | 516 | AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable); |
ba15fdfb | 517 | |
61d106d3 | 518 | } else if (def==10) { |
519 | AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable); | |
520 | AddCut(kTPC,AliPID::kElectron,3.); | |
521 | AddCut(kTPC,AliPID::kPion,-3.,3.,0.,0.,kTRUE); | |
522 | AddCut(kTPC,AliPID::kProton,-3.,3.,0.,0.,kTRUE); | |
523 | ||
ba15fdfb | 524 | } else if (def==11) { |
525 | // lower cut TPC: parametrisation by HFE | |
526 | // only use from period d on !! | |
527 | // upper cut TPC: 3 sigma | |
528 | // TOF ele band 3sigma 0<p<2.0GeV | |
529 | TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)+[2]", 0, 100); | |
530 | lowerCut->SetParameters(-3.718,-0.4,0.27); | |
531 | AddCut(kTPC,AliPID::kElectron,lowerCut,3.); | |
532 | AddCut(kTOF,AliPID::kElectron,-3,3,0,2.); | |
533 | } else if (def==12) { | |
534 | // lower cut TPC: parametrisation by HFE | |
535 | // only use from period d on !! | |
536 | // upper cut TPC: 3 sigma | |
537 | // TOF 5 sigma inclusion if TOFpid available | |
538 | // this should reduce K,p,Pi to a large extent | |
539 | TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)+[2]", 0, 100); | |
540 | lowerCut->SetParameters(-3.718,-0.4,0.27); | |
541 | AddCut(kTPC,AliPID::kElectron,lowerCut,4.); | |
542 | AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable); | |
8df8e382 | 543 | } |
ba15fdfb | 544 | |
8df8e382 | 545 | } |
546 | ||
48609e3d | 547 | //______________________________________________ |
548 | void AliDielectronPID::SetCorrVal(Double_t run) | |
549 | { | |
550 | // | |
551 | // set correction value for run | |
552 | // | |
d327d9cd | 553 | fgCorr=0.; |
554 | fgCorrdEdx=1.; | |
555 | ||
556 | if (fgFitCorr){ | |
557 | fgCorr=fgFitCorr->Eval(run); | |
558 | if (run<fgFitCorr->GetX()[0]) fgCorr=fgFitCorr->GetY()[0]; | |
559 | if (run>fgFitCorr->GetX()[fgFitCorr->GetN()-1]) fgCorr=fgFitCorr->GetY()[fgFitCorr->GetN()-1]; | |
560 | } | |
561 | ||
562 | if (fgdEdxRunCorr){ | |
563 | fgCorrdEdx=fgdEdxRunCorr->Eval(run); | |
564 | if (run<fgdEdxRunCorr->GetX()[0]) fgCorrdEdx=fgdEdxRunCorr->GetY()[0]; | |
565 | if (run>fgdEdxRunCorr->GetX()[fgFitCorr->GetN()-1]) fgCorrdEdx=fgdEdxRunCorr->GetY()[fgdEdxRunCorr->GetN()-1]; | |
566 | } | |
48609e3d | 567 | } |
568 | ||
5720c765 | 569 | //______________________________________________ |
0c09cae4 | 570 | Double_t AliDielectronPID::GetEtaCorr(const AliVTrack *track) |
5720c765 | 571 | { |
572 | // | |
573 | // return eta correction | |
574 | // | |
575 | if (!fgFunEtaCorr) return 1; | |
576 | return fgFunEtaCorr->Eval(track->Eta()); | |
577 | } |