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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> | |
30 | #include <TGraph.h> | |
31 | #include <THnBase.h> | |
32 | ||
33 | #include <AliVTrack.h> | |
34 | #include <AliVCluster.h> | |
35 | #include <AliLog.h> | |
36 | #include <AliExternalTrackParam.h> | |
37 | #include <AliPIDResponse.h> | |
38 | #include <AliTRDPIDResponse.h> | |
39 | #include <AliESDtrack.h> //!!!!! Remove once Eta correction is treated in the tender | |
40 | #include <AliAODTrack.h> | |
41 | #include <AliAODPid.h> | |
42 | ||
43 | #include "AliDielectronVarManager.h" | |
44 | #include "AliDielectronVarCuts.h" | |
45 | ||
46 | #include "AliDielectronPID.h" | |
47 | ||
48 | ClassImp(AliDielectronPID) | |
49 | ||
50 | TGraph *AliDielectronPID::fgFitCorr=0x0; | |
51 | Double_t AliDielectronPID::fgCorr=0.0; | |
52 | Double_t AliDielectronPID::fgCorrdEdx=1.0; | |
53 | TF1 *AliDielectronPID::fgFunEtaCorr=0x0; | |
54 | TH1 *AliDielectronPID::fgFunCntrdCorr=0x0; | |
55 | TH1 *AliDielectronPID::fgFunWdthCorr=0x0; | |
56 | TGraph *AliDielectronPID::fgdEdxRunCorr=0x0; | |
57 | ||
58 | AliDielectronPID::AliDielectronPID() : | |
59 | AliAnalysisCuts(), | |
60 | fUsedVars(new TBits(AliDielectronVarManager::kNMaxValues)), | |
61 | fNcuts(0), | |
62 | fPIDResponse(0x0) | |
63 | { | |
64 | // | |
65 | // Default Constructor | |
66 | // | |
67 | for (Int_t icut=0; icut<kNmaxPID; ++icut){ | |
68 | fDetType[icut]=kTPC; | |
69 | fPartType[icut]=AliPID::kPion; | |
70 | fNsigmaLow[icut]=0; | |
71 | fNsigmaUp[icut]=0; | |
72 | fmin[icut]=0; | |
73 | fmax[icut]=0; | |
74 | fExclude[icut]=kFALSE; | |
75 | fFunUpperCut[icut]=0x0; | |
76 | fFunLowerCut[icut]=0x0; | |
77 | fRequirePIDbit[icut]=0; | |
78 | fActiveCuts[icut]=-1; | |
79 | fSigmaFunLow[icut]=0; | |
80 | fSigmaFunUp[icut]=0; | |
81 | fFunSigma[icut]=0x0; | |
82 | fVarCuts[icut]=0x0; | |
83 | fMapElectronCutLow[icut]=0x0; | |
84 | } | |
85 | } | |
86 | ||
87 | //______________________________________________ | |
88 | AliDielectronPID::AliDielectronPID(const char* name, const char* title) : | |
89 | AliAnalysisCuts(name, title), | |
90 | fUsedVars(new TBits(AliDielectronVarManager::kNMaxValues)), | |
91 | fNcuts(0), | |
92 | fPIDResponse(0x0) | |
93 | { | |
94 | // | |
95 | // Named Constructor | |
96 | // | |
97 | for (Int_t icut=0; icut<kNmaxPID; ++icut){ | |
98 | fDetType[icut]=kTPC; | |
99 | fPartType[icut]=AliPID::kPion; | |
100 | fNsigmaLow[icut]=0; | |
101 | fNsigmaUp[icut]=0; | |
102 | fmin[icut]=0; | |
103 | fmax[icut]=0; | |
104 | fExclude[icut]=kFALSE; | |
105 | fFunUpperCut[icut]=0x0; | |
106 | fFunLowerCut[icut]=0x0; | |
107 | fRequirePIDbit[icut]=0; | |
108 | fActiveCuts[icut]=0; | |
109 | fSigmaFunLow[icut]=0; | |
110 | fSigmaFunUp[icut]=0; | |
111 | fFunSigma[icut]=0x0; | |
112 | fVarCuts[icut]=0x0; | |
113 | fMapElectronCutLow[icut]=0x0; | |
114 | } | |
115 | } | |
116 | ||
117 | //______________________________________________ | |
118 | AliDielectronPID::~AliDielectronPID() | |
119 | { | |
120 | // | |
121 | // Default Destructor | |
122 | // | |
123 | if (fUsedVars) delete fUsedVars; | |
124 | } | |
125 | ||
126 | //______________________________________________ | |
127 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, Double_t nSigmaUp/*=-99999.*/, | |
128 | Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/, | |
129 | UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/) | |
130 | { | |
131 | // | |
132 | // Add a pid nsigma cut | |
133 | // use response of detector 'det' in the range ['min'] to ['max'] for var | |
134 | // use a sigma band between 'nSigmaLow' and 'nSigmaUp' | |
135 | // if nSigmaUp==-99999. then nSigmaLow will be uesd as a symmetric band +- nSigmaLow | |
136 | // specify whether to 'exclude' the given band | |
137 | // | |
138 | ||
139 | if (fNcuts>=kNmaxPID){ | |
140 | AliError(Form("only %d pid cut ranges allowed",kNmaxPID)); | |
141 | return; | |
142 | } | |
143 | if (TMath::Abs(nSigmaUp+99999.)<1e-20){ | |
144 | nSigmaUp=TMath::Abs(nSigmaLow); | |
145 | nSigmaLow=-1.*nSigmaUp; | |
146 | } | |
147 | fDetType[fNcuts]=det; | |
148 | fPartType[fNcuts]=type; | |
149 | fNsigmaLow[fNcuts]=nSigmaLow; | |
150 | fNsigmaUp[fNcuts]=nSigmaUp; | |
151 | fmin[fNcuts]=min; | |
152 | fmax[fNcuts]=max; | |
153 | fExclude[fNcuts]=exclude; | |
154 | fRequirePIDbit[fNcuts]=pidBitType; | |
155 | if(var==-1) var=AliDielectronVarManager::kP; // set default | |
156 | fActiveCuts[fNcuts]=var; | |
157 | fUsedVars->SetBitNumber(var,kTRUE); | |
158 | ||
159 | AliDebug(1,Form("Add PID cut %d: sigma [% .1f,% .1f] \t cut [% .1f,% .f] \t var %d->%s \n", | |
160 | fNcuts,nSigmaLow,nSigmaUp,min,max,fActiveCuts[fNcuts],AliDielectronVarManager::GetValueName(fActiveCuts[fNcuts]))); | |
161 | ||
162 | ++fNcuts; | |
163 | ||
164 | } | |
165 | ||
166 | //______________________________________________ | |
167 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, TF1 * const funUp, | |
168 | Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/, | |
169 | UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/) | |
170 | { | |
171 | // | |
172 | // cut using a TF1 as upper cut | |
173 | // | |
174 | if (funUp==0x0){ | |
175 | AliError("A valid function is required for the upper cut. Not adding the cut!"); | |
176 | return; | |
177 | } | |
178 | fFunUpperCut[fNcuts]=funUp; | |
179 | AddCut(det,type,nSigmaLow,0.,min,max,exclude,pidBitType,var); | |
180 | } | |
181 | ||
182 | //______________________________________________ | |
183 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, TF1 * const funLow, Double_t nSigmaUp, | |
184 | Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/, | |
185 | UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/) | |
186 | { | |
187 | // | |
188 | // cut using a TF1 as lower cut | |
189 | // | |
190 | if (funLow==0x0){ | |
191 | AliError("A valid function is required for the lower cut. Not adding the cut!"); | |
192 | return; | |
193 | } | |
194 | fFunLowerCut[fNcuts]=funLow; | |
195 | AddCut(det,type,0.,nSigmaUp,min,max,exclude,pidBitType,var); | |
196 | } | |
197 | ||
198 | //______________________________________________ | |
199 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, TF1 * const funLow, TF1 * const funUp, | |
200 | Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/, | |
201 | UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/) | |
202 | { | |
203 | // | |
204 | // cut using a TF1 as lower and upper cut | |
205 | // | |
206 | if ( (funUp==0x0) || (funLow==0x0) ){ | |
207 | AliError("A valid function is required for upper and lower cut. Not adding the cut!"); | |
208 | return; | |
209 | } | |
210 | fFunUpperCut[fNcuts]=funUp; | |
211 | fFunLowerCut[fNcuts]=funLow; | |
212 | AddCut(det,type,0.,0.,min,max,exclude,pidBitType,var); | |
213 | } | |
214 | ||
215 | //______________________________________________ | |
216 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, Double_t nSigmaUp, | |
217 | Double_t min, Double_t max, Bool_t exclude, | |
218 | UInt_t pidBitType, TF1 * const funSigma) | |
219 | { | |
220 | // | |
221 | // cut using a TF1 as lower cut | |
222 | // | |
223 | if (funSigma==0x0){ | |
224 | AliError("A valid function is required for the sigma cut. Not adding the cut!"); | |
225 | return; | |
226 | } | |
227 | fFunSigma[fNcuts]=funSigma; | |
228 | fSigmaFunLow[fNcuts]=min; | |
229 | fSigmaFunUp[fNcuts]=max; | |
230 | ||
231 | AddCut(det,type,nSigmaLow,nSigmaUp,0,0,exclude,pidBitType,-1); | |
232 | } | |
233 | ||
234 | //______________________________________________ | |
235 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, THnBase * const histLow, Double_t nSigmaUp, | |
236 | Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/, | |
237 | UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/) | |
238 | { | |
239 | // | |
240 | // cut using a THnBase as a lower cut | |
241 | // | |
242 | if(histLow==0x0){ | |
243 | AliError("A valid histogram is required for the lower cut. Not adding the cut!"); | |
244 | return; | |
245 | } | |
246 | fMapElectronCutLow[fNcuts]=histLow; | |
247 | // fill used variables into map | |
248 | for(Int_t idim=0; idim<fMapElectronCutLow[fNcuts]->GetNdimensions(); idim++) { | |
249 | TString vari(fMapElectronCutLow[fNcuts]->GetAxis(idim)->GetName()); | |
250 | fUsedVars->SetBitNumber(AliDielectronVarManager::GetValueType(vari.Data()), kTRUE); | |
251 | } | |
252 | AddCut(det,type,0.,nSigmaUp,min,max,exclude,pidBitType,var); | |
253 | } | |
254 | //______________________________________________ | |
255 | void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, Double_t nSigmaUp, | |
256 | AliDielectronVarCuts *var, Bool_t exclude/*=kFALSE*/, | |
257 | UInt_t pidBitType/*=AliDielectronPID::kRequire*/) | |
258 | { | |
259 | // | |
260 | // Add a pid nsigma cut | |
261 | // use response of detector 'det' in the ranges for variables defined in var | |
262 | // use a sigma band between 'nSigmaLow' and 'nSigmaUp' | |
263 | // if nSigmaUp==-99999. then nSigmaLow will be uesd as a symmetric band +- nSigmaLow | |
264 | // specify whether to 'exclude' the given band | |
265 | // | |
266 | if(!var) return; | |
267 | if (fNcuts>=kNmaxPID){ | |
268 | AliError(Form("only %d pid cut ranges allowed",kNmaxPID)); | |
269 | return; | |
270 | } | |
271 | if (TMath::Abs(nSigmaUp+99999.)<1e-20){ | |
272 | nSigmaUp=TMath::Abs(nSigmaLow); | |
273 | nSigmaLow=-1.*nSigmaUp; | |
274 | } | |
275 | fDetType[fNcuts]=det; | |
276 | fPartType[fNcuts]=type; | |
277 | fNsigmaLow[fNcuts]=nSigmaLow; | |
278 | fNsigmaUp[fNcuts]=nSigmaUp; | |
279 | fExclude[fNcuts]=exclude; | |
280 | fRequirePIDbit[fNcuts]=pidBitType; | |
281 | fVarCuts[fNcuts]=var; | |
282 | ||
283 | AliDebug(1,Form("Add PID cut %d: sigma [% .1f,% .1f] \n", | |
284 | fNcuts,nSigmaLow,nSigmaUp)); | |
285 | ||
286 | ++fNcuts; | |
287 | ||
288 | } | |
289 | ||
290 | //______________________________________________ | |
291 | Bool_t AliDielectronPID::IsSelected(TObject* track) | |
292 | { | |
293 | // | |
294 | // perform PID cuts | |
295 | // | |
296 | ||
297 | //loop over all cuts | |
298 | AliVTrack *part=static_cast<AliVTrack*>(track); | |
299 | AliESDtrack *esdTrack=0x0; | |
300 | AliAODTrack *aodTrack=0x0; | |
301 | Double_t origdEdx=-1; | |
302 | ||
303 | // apply ETa correction, remove once this is in the tender | |
304 | if( (part->IsA() == AliESDtrack::Class()) ){ | |
305 | esdTrack=static_cast<AliESDtrack*>(part); | |
306 | origdEdx=esdTrack->GetTPCsignal(); | |
307 | esdTrack->SetTPCsignal(origdEdx/GetEtaCorr(esdTrack)/fgCorrdEdx,esdTrack->GetTPCsignalSigma(),esdTrack->GetTPCsignalN()); | |
308 | } else if ( (part->IsA() == AliAODTrack::Class()) ){ | |
309 | aodTrack=static_cast<AliAODTrack*>(track); | |
310 | AliAODPid *pid=const_cast<AliAODPid*>(aodTrack->GetDetPid()); | |
311 | if (pid){ | |
312 | origdEdx=pid->GetTPCsignal(); | |
313 | pid->SetTPCsignal(origdEdx/GetEtaCorr(aodTrack)/fgCorrdEdx); | |
314 | } | |
315 | } | |
316 | ||
317 | // check for corrections and add their variables to the fill map | |
318 | if(fgFunCntrdCorr) { | |
319 | fUsedVars->SetBitNumber(fgFunCntrdCorr->GetXaxis()->GetUniqueID(), kTRUE); | |
320 | fUsedVars->SetBitNumber(fgFunCntrdCorr->GetYaxis()->GetUniqueID(), kTRUE); | |
321 | fUsedVars->SetBitNumber(fgFunCntrdCorr->GetZaxis()->GetUniqueID(), kTRUE); | |
322 | } | |
323 | if(fgFunWdthCorr) { | |
324 | fUsedVars->SetBitNumber(fgFunWdthCorr->GetXaxis()->GetUniqueID(), kTRUE); | |
325 | fUsedVars->SetBitNumber(fgFunWdthCorr->GetYaxis()->GetUniqueID(), kTRUE); | |
326 | fUsedVars->SetBitNumber(fgFunWdthCorr->GetZaxis()->GetUniqueID(), kTRUE); | |
327 | } | |
328 | ||
329 | //Fill values | |
330 | Double_t values[AliDielectronVarManager::kNMaxValues]; | |
331 | AliDielectronVarManager::SetFillMap(fUsedVars); | |
332 | AliDielectronVarManager::Fill(track,values); | |
333 | ||
334 | Bool_t selected=kFALSE; | |
335 | fPIDResponse=AliDielectronVarManager::GetPIDResponse(); | |
336 | for (UChar_t icut=0; icut<fNcuts; ++icut){ | |
337 | Double_t min=fmin[icut]; | |
338 | Double_t max=fmax[icut]; | |
339 | Double_t val=values[fActiveCuts[icut]]; | |
340 | ||
341 | // test var range. In case min==max do not cut | |
342 | if ( fVarCuts[icut] ) { | |
343 | if ( !fVarCuts[icut]->IsSelected(part) ) continue; | |
344 | } | |
345 | else if ( ( (TMath::Abs(min-max)>1e-20) && (val<min || val>=max) ) ) { | |
346 | continue; | |
347 | } | |
348 | ||
349 | // check if fFunSigma is set, then check if 'part' is in sigma range of the function | |
350 | if(fFunSigma[icut]){ | |
351 | val= fPIDResponse->NumberOfSigmasTPC(part, fPartType[icut]); | |
352 | if (fPartType[icut]==AliPID::kElectron){ | |
353 | val-=fgCorr; | |
354 | } | |
355 | min= fFunSigma[icut]->Eval(part->GetTPCmomentum())+fSigmaFunLow[icut]; | |
356 | max= fFunSigma[icut]->Eval(part->GetTPCmomentum())+fSigmaFunUp[icut]; | |
357 | if(val<min || val>=max) continue; | |
358 | } | |
359 | ||
360 | switch (fDetType[icut]){ | |
361 | case kITS: | |
362 | selected = IsSelectedITS(part,icut); | |
363 | break; | |
364 | case kTPC: | |
365 | selected = IsSelectedTPC(part,icut,values); | |
366 | break; | |
367 | case kTRD: | |
368 | selected = IsSelectedTRD(part,icut); | |
369 | break; | |
370 | case kTRDeleEff: | |
371 | selected = IsSelectedTRDeleEff(part,icut); | |
372 | break; | |
373 | case kTRDeleEff2D: | |
374 | selected = IsSelectedTRDeleEff(part,icut,AliTRDPIDResponse::kLQ2D); | |
375 | break; | |
376 | case kTOF: | |
377 | selected = IsSelectedTOF(part,icut); | |
378 | break; | |
379 | case kEMCAL: | |
380 | selected = IsSelectedEMCAL(part,icut); | |
381 | break; | |
382 | } | |
383 | if (!selected) { | |
384 | if (esdTrack) esdTrack->SetTPCsignal(origdEdx,esdTrack->GetTPCsignalSigma(),esdTrack->GetTPCsignalN()); | |
385 | else if (aodTrack){ | |
386 | AliAODPid *pid=const_cast<AliAODPid*>(aodTrack->GetDetPid()); | |
387 | if (pid) pid->SetTPCsignal(origdEdx); | |
388 | } | |
389 | ||
390 | return kFALSE; | |
391 | } | |
392 | } | |
393 | ||
394 | if (esdTrack) esdTrack->SetTPCsignal(origdEdx,esdTrack->GetTPCsignalSigma(),esdTrack->GetTPCsignalN()); | |
395 | else if (aodTrack){ | |
396 | AliAODPid *pid=const_cast<AliAODPid*>(aodTrack->GetDetPid()); | |
397 | if (pid) pid->SetTPCsignal(origdEdx); | |
398 | } | |
399 | return selected; | |
400 | } | |
401 | ||
402 | //______________________________________________ | |
403 | Bool_t AliDielectronPID::IsSelectedITS(AliVTrack * const part, Int_t icut) | |
404 | { | |
405 | // | |
406 | // ITS part of the PID check | |
407 | // Don't accept the track if there was no pid bit set | |
408 | // | |
409 | AliPIDResponse::EDetPidStatus pidStatus = fPIDResponse->CheckPIDStatus(AliPIDResponse::kITS,part); | |
410 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kFALSE; | |
411 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kTRUE; | |
412 | ||
413 | Double_t mom=part->P(); | |
414 | ||
415 | Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasITS(part, fPartType[icut]); | |
416 | ||
417 | // test if we are supposed to use a function for the cut | |
418 | if (fFunUpperCut[icut]) fNsigmaUp[icut] =fFunUpperCut[icut]->Eval(mom); | |
419 | if (fFunLowerCut[icut]) fNsigmaLow[icut]=fFunLowerCut[icut]->Eval(mom); | |
420 | ||
421 | Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut]; | |
422 | return selected; | |
423 | } | |
424 | ||
425 | //______________________________________________ | |
426 | Bool_t AliDielectronPID::IsSelectedTPC(AliVTrack * const part, Int_t icut, Double_t *values) | |
427 | { | |
428 | // | |
429 | // TPC part of the PID check | |
430 | // Don't accept the track if there was no pid bit set | |
431 | // | |
432 | AliPIDResponse::EDetPidStatus pidStatus = fPIDResponse->CheckPIDStatus(AliPIDResponse::kTPC,part); | |
433 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kFALSE; | |
434 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kTRUE; | |
435 | ||
436 | ||
437 | Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasTPC(part, fPartType[icut]); | |
438 | ||
439 | // eta corrections | |
440 | if (fPartType[icut]==AliPID::kElectron){ | |
441 | // old way 1D | |
442 | numberOfSigmas-=fgCorr; | |
443 | // via functions (1-3D) | |
444 | numberOfSigmas-=GetCntrdCorr(part); | |
445 | numberOfSigmas/=GetWdthCorr(part); | |
446 | } | |
447 | ||
448 | // matching of MC and data // | |
449 | ||
450 | // test if we are supposed to use a function for the cut (matching via fits) | |
451 | if (fFunUpperCut[icut]) fNsigmaUp[icut] =fFunUpperCut[icut]->Eval(values[AliDielectronVarManager::kPIn]); | |
452 | if (fFunLowerCut[icut]) fNsigmaLow[icut]=fFunLowerCut[icut]->Eval(values[AliDielectronVarManager::kPIn]); | |
453 | ||
454 | // test if we are using cut maps (in calibrated units) | |
455 | Double_t lowElectronCut = fNsigmaLow[icut]; | |
456 | Double_t upElectronCut = fNsigmaUp[icut]; | |
457 | ||
458 | if((fPartType[icut]==AliPID::kElectron) && (fMapElectronCutLow[icut] )) { | |
459 | Double_t *vals = new Double_t[fMapElectronCutLow[icut]->GetNdimensions()];//={-1}; | |
460 | // get array of values for the corresponding dimensions using axis names | |
461 | for(Int_t idim=0; idim<fMapElectronCutLow[icut]->GetNdimensions(); idim++) { | |
462 | vals[idim] = values[AliDielectronVarManager::GetValueType(fMapElectronCutLow[icut]->GetAxis(idim)->GetName())]; | |
463 | // printf(" \t %s %.3f ",fMapElectronCutLow[icut]->GetAxis(idim)->GetName(),vals[idim]); | |
464 | } | |
465 | // find bin for values (w/o creating it in case it is not filled) | |
466 | Long_t bin = fMapElectronCutLow[icut]->GetBin(vals,kFALSE); | |
467 | if(bin>0) lowElectronCut=fMapElectronCutLow[icut]->GetBinContent(bin); | |
468 | else lowElectronCut=100; | |
469 | // printf(" low cut %.3f (%ld) \n", lowElectronCut,bin); | |
470 | delete [] vals; | |
471 | } | |
472 | ||
473 | ||
474 | Bool_t selected=((numberOfSigmas>=lowElectronCut)&&(numberOfSigmas<=upElectronCut))^fExclude[icut]; | |
475 | return selected; | |
476 | } | |
477 | ||
478 | //______________________________________________ | |
479 | Bool_t AliDielectronPID::IsSelectedTRD(AliVTrack * const part, Int_t icut) | |
480 | { | |
481 | // | |
482 | // TRD part of the pid check | |
483 | // the TRD checks on the probabilities. | |
484 | // | |
485 | ||
486 | AliPIDResponse::EDetPidStatus pidStatus = fPIDResponse->CheckPIDStatus(AliPIDResponse::kTRD,part); | |
487 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kFALSE; | |
488 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kTRUE; | |
489 | ||
490 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable && (part->GetTRDntrackletsPID()<4)) return kTRUE; | |
491 | ||
492 | Double_t p[AliPID::kSPECIES]={0.}; | |
493 | fPIDResponse->ComputeTRDProbability(part,AliPID::kSPECIES,p); | |
494 | Float_t particleProb=p[fPartType[icut]]; | |
495 | ||
496 | Bool_t selected=((particleProb>=fNsigmaLow[icut])&&(particleProb<=fNsigmaUp[icut]))^fExclude[icut]; | |
497 | return selected; | |
498 | } | |
499 | ||
500 | //______________________________________________ | |
501 | Bool_t AliDielectronPID::IsSelectedTRDeleEff(AliVTrack * const part, Int_t icut, AliTRDPIDResponse::ETRDPIDMethod PIDmethod) | |
502 | { | |
503 | // | |
504 | // TRD part of the pid check using electron efficiency requirement | |
505 | // in this case the upper limit as well as the particle specie is ignored | |
506 | // and the lower limit regarded as the requested electron efficiency | |
507 | // | |
508 | ||
509 | AliPIDResponse::EDetPidStatus pidStatus = fPIDResponse->CheckPIDStatus(AliPIDResponse::kTRD,part); | |
510 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kFALSE; | |
511 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kTRUE; | |
512 | ||
513 | Double_t centrality = -1.; | |
514 | if(part->IsA() == AliESDtrack::Class()) | |
515 | centrality=(const_cast<AliESDEvent*>( (static_cast<const AliESDtrack*>(part))->GetESDEvent()) )->GetCentrality()->GetCentralityPercentile("V0M"); | |
516 | if(part->IsA() == AliAODTrack::Class()) | |
517 | centrality=(const_cast<AliAODEvent*>( (static_cast<const AliAODTrack*>(part))->GetAODEvent()) )->GetCentrality()->GetCentralityPercentile("V0M"); | |
518 | ||
519 | Bool_t selected=fPIDResponse->IdentifiedAsElectronTRD(part,fNsigmaLow[icut], centrality, PIDmethod)^fExclude[icut]; | |
520 | return selected; | |
521 | } | |
522 | ||
523 | //______________________________________________ | |
524 | Bool_t AliDielectronPID::IsSelectedTOF(AliVTrack * const part, Int_t icut) | |
525 | { | |
526 | // | |
527 | // TOF part of the PID check | |
528 | // Don't accept the track if there was no pid bit set | |
529 | // | |
530 | AliPIDResponse::EDetPidStatus pidStatus = fPIDResponse->CheckPIDStatus(AliPIDResponse::kTOF,part); | |
531 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kFALSE; | |
532 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kTRUE; | |
533 | ||
534 | Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasTOF(part, fPartType[icut]); | |
535 | ||
536 | Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut]; | |
537 | return selected; | |
538 | } | |
539 | ||
540 | //______________________________________________ | |
541 | Bool_t AliDielectronPID::IsSelectedEMCAL(AliVTrack * const part, Int_t icut) | |
542 | { | |
543 | // | |
544 | // emcal pid selecttion | |
545 | // | |
546 | ||
547 | //TODO: correct way to check for emcal pid? | |
548 | Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasEMCAL(part, fPartType[icut]); | |
549 | ||
550 | Bool_t hasPID=numberOfSigmas>-998.; | |
551 | ||
552 | if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&!hasPID) return kFALSE; | |
553 | if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&!hasPID) return kTRUE; | |
554 | ||
555 | ||
556 | Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut]; | |
557 | return selected; | |
558 | } | |
559 | ||
560 | //______________________________________________ | |
561 | void AliDielectronPID::SetDefaults(Int_t def){ | |
562 | // | |
563 | // initialise default pid strategies | |
564 | // | |
565 | ||
566 | if (def==0){ | |
567 | // 2sigma bands TPC: | |
568 | // - include e | |
569 | // - exclude mu,K,pi,p | |
570 | // -complete p range | |
571 | AddCut(kTPC,AliPID::kElectron,2); | |
572 | AddCut(kTPC,AliPID::kMuon,-2.,2.,0.,0.,kTRUE); | |
573 | AddCut(kTPC,AliPID::kPion,-2.,2.,0.,0.,kTRUE); | |
574 | AddCut(kTPC,AliPID::kKaon,-2.,2.,0.,0.,kTRUE); | |
575 | AddCut(kTPC,AliPID::kProton,-2.,2.,0.,0.,kTRUE); | |
576 | } else if (def==1) { | |
577 | // 2sigma bands TPC: | |
578 | // - include e 0<p<inf | |
579 | // - exclude mu,K,pi,p 0<p<2 | |
580 | AddCut(kTPC,AliPID::kElectron,2.); | |
581 | AddCut(kTPC,AliPID::kMuon,-2.,2.,0.,2.,kTRUE); | |
582 | AddCut(kTPC,AliPID::kPion,-2.,2.,0.,2.,kTRUE); | |
583 | AddCut(kTPC,AliPID::kKaon,-2.,2.,0.,2.,kTRUE); | |
584 | AddCut(kTPC,AliPID::kProton,-2.,2.,0.,2.,kTRUE); | |
585 | ||
586 | } else if (def==2) { | |
587 | // include 2sigma e TPC | |
588 | // 3sigma bands TOF | |
589 | // - exclude K,P | |
590 | AddCut(kTPC,AliPID::kElectron,-3.,3.); | |
591 | AddCut(kTPC,AliPID::kPion,-3.,3.,0.,0.,kTRUE); | |
592 | AddCut(kTPC,AliPID::kProton,-3.,3.,0.,0.,kTRUE); | |
593 | ||
594 | } else if (def==3 || def==4) { // def3 and def4 are the same?? | |
595 | // include 2sigma e TPC | |
596 | // 3sigma bands TOF | |
597 | // - exclude K 0<p<1 | |
598 | // - exclude P 0<p<2 | |
599 | AddCut(kTPC,AliPID::kElectron,2); | |
600 | AddCut(kTOF,AliPID::kKaon,-3.,3.,0.,1.,kTRUE); | |
601 | AddCut(kTOF,AliPID::kProton,-6.,6.,0.,1.,kTRUE); | |
602 | AddCut(kTOF,AliPID::kProton,-3.,3.,1.,2.,kTRUE); | |
603 | ||
604 | } else if (def==5) { | |
605 | AddCut(kTPC,AliPID::kElectron,-0.5,3); | |
606 | AddCut(kTOF,AliPID::kElectron,-3,3,0,1.5); | |
607 | } else if (def==6) { | |
608 | // lower cut TPC: parametrisation by HFE | |
609 | // upper cut TPC: 3 sigma | |
610 | // TOF ele band 3sigma 0<p<1.5GeV | |
611 | TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)", 0, 100); | |
612 | lowerCut->SetParameters(-2.7,-0.4357); | |
613 | AddCut(kTPC,AliPID::kElectron,lowerCut,3.); | |
614 | AddCut(kTOF,AliPID::kElectron,-3,3,0,1.5); | |
615 | } else if (def==7) { | |
616 | // wide TPC cut | |
617 | // TOF ele band 3sigma 0<p<1.5GeV | |
618 | AddCut(kTPC,AliPID::kElectron,10.); | |
619 | AddCut(kTOF,AliPID::kElectron,-3,3,0,1.5); | |
620 | } else if (def==8) { | |
621 | // TOF 5 sigma inclusion if TOFpid available | |
622 | // this should reduce K,p,Pi to a large extent | |
623 | AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable); | |
624 | } else if (def==9) { | |
625 | // lower cut TPC: parametrisation by HFE | |
626 | // upper cut TPC: 3 sigma | |
627 | // TOF 5 sigma inclusion if TOFpid available | |
628 | // this should reduce K,p,Pi to a large extent | |
629 | TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)", 0, 100); | |
630 | lowerCut->SetParameters(-2.65,-0.6757); | |
631 | AddCut(kTPC,AliPID::kElectron,lowerCut,4.); | |
632 | AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable); | |
633 | ||
634 | } else if (def==10) { | |
635 | AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable); | |
636 | AddCut(kTPC,AliPID::kElectron,3.); | |
637 | AddCut(kTPC,AliPID::kPion,-3.,3.,0.,0.,kTRUE); | |
638 | AddCut(kTPC,AliPID::kProton,-3.,3.,0.,0.,kTRUE); | |
639 | ||
640 | } else if (def==11) { | |
641 | // lower cut TPC: parametrisation by HFE | |
642 | // only use from period d on !! | |
643 | // upper cut TPC: 3 sigma | |
644 | // TOF ele band 3sigma 0<p<2.0GeV | |
645 | TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)+[2]", 0, 100); | |
646 | lowerCut->SetParameters(-3.718,-0.4,0.27); | |
647 | AddCut(kTPC,AliPID::kElectron,lowerCut,3.); | |
648 | AddCut(kTOF,AliPID::kElectron,-3,3,0,2.); | |
649 | } else if (def==12) { | |
650 | // lower cut TPC: parametrisation by HFE | |
651 | // only use from period d on !! | |
652 | // upper cut TPC: 3 sigma | |
653 | // TOF 5 sigma inclusion if TOFpid available | |
654 | // this should reduce K,p,Pi to a large extent | |
655 | TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)+[2]", 0, 100); | |
656 | lowerCut->SetParameters(-3.718,-0.4,0.27); | |
657 | AddCut(kTPC,AliPID::kElectron,lowerCut,4.); | |
658 | AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable); | |
659 | } | |
660 | else if (def==13) { | |
661 | // TPC electron inclusion | |
662 | // TOF electron inclusion if available | |
663 | AddCut(kTOF,AliPID::kElectron,-3.,3.,0,200,kFALSE,AliDielectronPID::kIfAvailable); | |
664 | AddCut(kTPC,AliPID::kElectron,10.); | |
665 | } | |
666 | else if (def==14) { | |
667 | // TRD 1D 90% elec eff, 4-6 tracklets | |
668 | // TPC electron inclusion | |
669 | // TOF electron inclusion if available | |
670 | AddCut(AliDielectronPID::kTRDeleEff,AliPID::kElectron,.9,1.,3.5,6.,kFALSE, | |
671 | AliDielectronPID::kIfAvailable,AliDielectronVarManager::kTRDpidQuality); | |
672 | AddCut(kTOF,AliPID::kElectron,-3.,3.,0,200,kFALSE,AliDielectronPID::kIfAvailable); | |
673 | AddCut(kTPC,AliPID::kElectron,10.); | |
674 | } | |
675 | else if (def==15) { | |
676 | // TRD 1D 90% elec eff, 4-6 tracklets, chi2 < 2 | |
677 | // TPC electron inclusion | |
678 | // TOF electron inclusion if available | |
679 | AddCut(AliDielectronPID::kTRDeleEff,AliPID::kElectron,.9,1.,3.5,6.,kFALSE, | |
680 | AliDielectronPID::kIfAvailable,AliDielectronVarManager::kTRDpidQuality); | |
681 | AddCut(AliDielectronPID::kTRDeleEff,AliPID::kElectron,.9,1.,0.,2.,kFALSE, | |
682 | AliDielectronPID::kIfAvailable,AliDielectronVarManager::kTRDchi2); | |
683 | AddCut(kTOF,AliPID::kElectron,-3.,3.,0,200,kFALSE,AliDielectronPID::kIfAvailable); | |
684 | AddCut(kTPC,AliPID::kElectron,10.); | |
685 | } | |
686 | else if (def==16) { | |
687 | // TPC electron inclusion | |
688 | // TOF electron inclusion if available | |
689 | AddCut(kTOF,AliPID::kElectron,-3.,3.,0,200,kFALSE,AliDielectronPID::kIfAvailable); | |
690 | AddCut(kTPC,AliPID::kElectron,-3.5,+3.5); | |
691 | } | |
692 | ||
693 | } | |
694 | ||
695 | //______________________________________________ | |
696 | void AliDielectronPID::SetCorrVal(Double_t run) | |
697 | { | |
698 | // | |
699 | // set correction value for run | |
700 | // | |
701 | fgCorr=0.; | |
702 | fgCorrdEdx=1.; | |
703 | ||
704 | if (fgFitCorr){ | |
705 | fgCorr=fgFitCorr->Eval(run); | |
706 | if (run<fgFitCorr->GetX()[0]) fgCorr=fgFitCorr->GetY()[0]; | |
707 | if (run>fgFitCorr->GetX()[fgFitCorr->GetN()-1]) fgCorr=fgFitCorr->GetY()[fgFitCorr->GetN()-1]; | |
708 | } | |
709 | ||
710 | if (fgdEdxRunCorr){ | |
711 | fgCorrdEdx=fgdEdxRunCorr->Eval(run); | |
712 | if (run<fgdEdxRunCorr->GetX()[0]) fgCorrdEdx=fgdEdxRunCorr->GetY()[0]; | |
713 | if (run>fgdEdxRunCorr->GetX()[fgdEdxRunCorr->GetN()-1]) fgCorrdEdx=fgdEdxRunCorr->GetY()[fgdEdxRunCorr->GetN()-1]; | |
714 | } | |
715 | } | |
716 | ||
717 | //______________________________________________ | |
718 | Double_t AliDielectronPID::GetEtaCorr(const AliVTrack *track) | |
719 | { | |
720 | // | |
721 | // return eta correction | |
722 | // | |
723 | if (!fgFunEtaCorr) return 1; | |
724 | return fgFunEtaCorr->Eval(track->Eta()); | |
725 | } | |
726 | ||
727 | //______________________________________________ | |
728 | Double_t AliDielectronPID::GetPIDCorr(const AliVTrack *track, TH1 *hist) | |
729 | { | |
730 | // | |
731 | // return correction value | |
732 | // | |
733 | //TODO: think about taking an values array as argument to reduce # var fills | |
734 | ||
735 | //Fill only event and vparticle values (otherwise we end up in a circle) | |
736 | Double_t values[AliDielectronVarManager::kNMaxValues]; | |
737 | AliDielectronVarManager::FillVarVParticle(track,values); | |
738 | ||
739 | TF1 *fun = (TF1*)hist->GetListOfFunctions()->At(0); | |
740 | Int_t dim=(fun?fun->GetNdim():hist->GetDimension()); | |
741 | ||
742 | Double_t var[3] = {0.,0.,0.}; | |
743 | if(dim>0) var[0] = values[hist->GetXaxis()->GetUniqueID()]; | |
744 | if(dim>1) var[1] = values[hist->GetYaxis()->GetUniqueID()]; | |
745 | if(dim>2) var[2] = values[hist->GetZaxis()->GetUniqueID()]; | |
746 | Double_t corr = 0.0; | |
747 | if(fun) corr = fun->Eval(var[0],var[1],var[2]); | |
748 | else corr = hist->GetBinContent( hist->FindFixBin(var[0],var[1],var[2]) ); | |
749 | // for(Int_t i=0;i<dim;i++) printf("%d:%.3f ",i,var[i]); | |
750 | // printf("%d-dim CORR value: %f (track %p) \n",dim,corr,track); | |
751 | return corr; | |
752 | } |