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