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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/*
21Detailed description
22
23
24*/
25// //
26///////////////////////////////////////////////////////////////////////////
27
28#include <TMath.h>
29#include <TF1.h>
48609e3d 30#include <TGraph.h>
5317c468 31#include <THnBase.h>
8df8e382 32
164bfb53 33#include <AliVTrack.h>
5720c765 34#include <AliVCluster.h>
8df8e382 35#include <AliLog.h>
ffbede40 36#include <AliExternalTrackParam.h>
5720c765 37#include <AliPIDResponse.h>
6d5dea7c 38#include <AliTRDPIDResponse.h>
5720c765 39#include <AliESDtrack.h> //!!!!! Remove once Eta correction is treated in the tender
0c09cae4 40#include <AliAODTrack.h>
41#include <AliAODPid.h>
8df8e382 42
43#include "AliDielectronVarManager.h"
8c2440d0 44#include "AliDielectronVarCuts.h"
8df8e382 45
46#include "AliDielectronPID.h"
47
48ClassImp(AliDielectronPID)
49
30f9a393 50TGraph *AliDielectronPID::fgFitCorr=0x0;
48609e3d 51Double_t AliDielectronPID::fgCorr=0.0;
d327d9cd 52Double_t AliDielectronPID::fgCorrdEdx=1.0;
30f9a393 53TF1 *AliDielectronPID::fgFunEtaCorr=0x0;
9ad9e048 54TH1 *AliDielectronPID::fgFunCntrdCorr=0x0;
55TH1 *AliDielectronPID::fgFunWdthCorr=0x0;
30f9a393 56TGraph *AliDielectronPID::fgdEdxRunCorr=0x0;
48609e3d 57
8df8e382 58AliDielectronPID::AliDielectronPID() :
59 AliAnalysisCuts(),
a94c2e7e 60 fUsedVars(new TBits(AliDielectronVarManager::kNMaxValues)),
8df8e382 61 fNcuts(0),
8d42b5b9 62 fPIDResponse(0x0)
8df8e382 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;
5720c765 72 fmin[icut]=0;
73 fmax[icut]=0;
8df8e382 74 fExclude[icut]=kFALSE;
75 fFunUpperCut[icut]=0x0;
76 fFunLowerCut[icut]=0x0;
61d106d3 77 fRequirePIDbit[icut]=0;
5720c765 78 fActiveCuts[icut]=-1;
88204efa 79 fSigmaFunLow[icut]=0;
80 fSigmaFunUp[icut]=0;
81 fFunSigma[icut]=0x0;
8c2440d0 82 fVarCuts[icut]=0x0;
5317c468 83 fMapElectronCutLow[icut]=0x0;
8df8e382 84 }
85}
86
87//______________________________________________
88AliDielectronPID::AliDielectronPID(const char* name, const char* title) :
89 AliAnalysisCuts(name, title),
a94c2e7e 90 fUsedVars(new TBits(AliDielectronVarManager::kNMaxValues)),
8df8e382 91 fNcuts(0),
8d42b5b9 92 fPIDResponse(0x0)
8df8e382 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;
5720c765 102 fmin[icut]=0;
103 fmax[icut]=0;
8df8e382 104 fExclude[icut]=kFALSE;
105 fFunUpperCut[icut]=0x0;
106 fFunLowerCut[icut]=0x0;
61d106d3 107 fRequirePIDbit[icut]=0;
5720c765 108 fActiveCuts[icut]=0;
88204efa 109 fSigmaFunLow[icut]=0;
110 fSigmaFunUp[icut]=0;
111 fFunSigma[icut]=0x0;
8c2440d0 112 fVarCuts[icut]=0x0;
5317c468 113 fMapElectronCutLow[icut]=0x0;
8df8e382 114 }
115}
116
117//______________________________________________
118AliDielectronPID::~AliDielectronPID()
119{
120 //
121 // Default Destructor
122 //
a94c2e7e 123 if (fUsedVars) delete fUsedVars;
8df8e382 124}
125
126//______________________________________________
127void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, Double_t nSigmaUp/*=-99999.*/,
5720c765 128 Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/,
129 UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/)
8df8e382 130{
131 //
132 // Add a pid nsigma cut
5720c765 133 // use response of detector 'det' in the range ['min'] to ['max'] for var
134 // use a sigma band between 'nSigmaLow' and 'nSigmaUp'
8df8e382 135 // if nSigmaUp==-99999. then nSigmaLow will be uesd as a symmetric band +- nSigmaLow
136 // specify whether to 'exclude' the given band
137 //
138
45b2b1b8 139 if (fNcuts>=kNmaxPID){
8df8e382 140 AliError(Form("only %d pid cut ranges allowed",kNmaxPID));
45b2b1b8 141 return;
8df8e382 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;
5720c765 151 fmin[fNcuts]=min;
152 fmax[fNcuts]=max;
8df8e382 153 fExclude[fNcuts]=exclude;
61d106d3 154 fRequirePIDbit[fNcuts]=pidBitType;
a94c2e7e 155 if(var==-1) var=AliDielectronVarManager::kP; // set default
156 fActiveCuts[fNcuts]=var;
157 fUsedVars->SetBitNumber(var,kTRUE);
5720c765 158
fd6ebd85 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])));
8df8e382 161
5720c765 162 ++fNcuts;
163
8df8e382 164}
165
166//______________________________________________
167void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, TF1 * const funUp,
5720c765 168 Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/,
169 UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/)
8df8e382 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;
5720c765 179 AddCut(det,type,nSigmaLow,0.,min,max,exclude,pidBitType,var);
8df8e382 180}
181
182//______________________________________________
183void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, TF1 * const funLow, Double_t nSigmaUp,
5720c765 184 Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/,
185 UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/)
8df8e382 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;
5720c765 195 AddCut(det,type,0.,nSigmaUp,min,max,exclude,pidBitType,var);
8df8e382 196}
197
198//______________________________________________
199void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, TF1 * const funLow, TF1 * const funUp,
5720c765 200 Double_t min/*=0*/, Double_t max/*=0*/, Bool_t exclude/*=kFALSE*/,
201 UInt_t pidBitType/*=AliDielectronPID::kRequire*/, Int_t var/*=-1*/)
8df8e382 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;
5720c765 212 AddCut(det,type,0.,0.,min,max,exclude,pidBitType,var);
8df8e382 213}
214
88204efa 215//______________________________________________
216void 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
5317c468 234//______________________________________________
235void 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 AddCut(det,type,0.,nSigmaUp,min,max,exclude,pidBitType,var);
248}
8c2440d0 249//______________________________________________
250void AliDielectronPID::AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, Double_t nSigmaUp,
251 AliDielectronVarCuts *var, Bool_t exclude/*=kFALSE*/,
252 UInt_t pidBitType/*=AliDielectronPID::kRequire*/)
253{
254 //
255 // Add a pid nsigma cut
256 // use response of detector 'det' in the ranges for variables defined in var
257 // use a sigma band between 'nSigmaLow' and 'nSigmaUp'
258 // if nSigmaUp==-99999. then nSigmaLow will be uesd as a symmetric band +- nSigmaLow
259 // specify whether to 'exclude' the given band
260 //
261 if(!var) return;
262 if (fNcuts>=kNmaxPID){
263 AliError(Form("only %d pid cut ranges allowed",kNmaxPID));
264 return;
265 }
266 if (TMath::Abs(nSigmaUp+99999.)<1e-20){
267 nSigmaUp=TMath::Abs(nSigmaLow);
268 nSigmaLow=-1.*nSigmaUp;
269 }
270 fDetType[fNcuts]=det;
271 fPartType[fNcuts]=type;
272 fNsigmaLow[fNcuts]=nSigmaLow;
273 fNsigmaUp[fNcuts]=nSigmaUp;
274 fExclude[fNcuts]=exclude;
275 fRequirePIDbit[fNcuts]=pidBitType;
276 fVarCuts[fNcuts]=var;
277
278 AliDebug(1,Form("Add PID cut %d: sigma [% .1f,% .1f] \n",
279 fNcuts,nSigmaLow,nSigmaUp));
280
281 ++fNcuts;
282
283}
284
8df8e382 285//______________________________________________
286Bool_t AliDielectronPID::IsSelected(TObject* track)
287{
288 //
289 // perform PID cuts
290 //
291
292 //loop over all cuts
164bfb53 293 AliVTrack *part=static_cast<AliVTrack*>(track);
5720c765 294 AliESDtrack *esdTrack=0x0;
0c09cae4 295 AliAODTrack *aodTrack=0x0;
5720c765 296 Double_t origdEdx=-1;
8df8e382 297
5720c765 298 // apply ETa correction, remove once this is in the tender
0c09cae4 299 if( (part->IsA() == AliESDtrack::Class()) ){
5720c765 300 esdTrack=static_cast<AliESDtrack*>(part);
301 origdEdx=esdTrack->GetTPCsignal();
d327d9cd 302 esdTrack->SetTPCsignal(origdEdx/GetEtaCorr(esdTrack)/fgCorrdEdx,esdTrack->GetTPCsignalSigma(),esdTrack->GetTPCsignalN());
0c09cae4 303 } else if ( (part->IsA() == AliAODTrack::Class()) ){
304 aodTrack=static_cast<AliAODTrack*>(track);
305 AliAODPid *pid=const_cast<AliAODPid*>(aodTrack->GetDetPid());
423cc7ef 306 if (pid){
307 origdEdx=pid->GetTPCsignal();
308 pid->SetTPCsignal(origdEdx/GetEtaCorr(aodTrack)/fgCorrdEdx);
309 }
5720c765 310 }
2ef1eb25 311
312 // check for corrections and add their variables to the fill map
313 if(fgFunCntrdCorr) {
314 fUsedVars->SetBitNumber(fgFunCntrdCorr->GetXaxis()->GetUniqueID(), kTRUE);
315 fUsedVars->SetBitNumber(fgFunCntrdCorr->GetYaxis()->GetUniqueID(), kTRUE);
316 fUsedVars->SetBitNumber(fgFunCntrdCorr->GetZaxis()->GetUniqueID(), kTRUE);
317 }
318 if(fgFunWdthCorr) {
319 fUsedVars->SetBitNumber(fgFunWdthCorr->GetXaxis()->GetUniqueID(), kTRUE);
320 fUsedVars->SetBitNumber(fgFunWdthCorr->GetYaxis()->GetUniqueID(), kTRUE);
321 fUsedVars->SetBitNumber(fgFunWdthCorr->GetZaxis()->GetUniqueID(), kTRUE);
322 }
323 for(UChar_t icut=0; icut<fNcuts; ++icut) {
324 if(!fMapElectronCutLow[icut]) continue;
325 for(Int_t idim=0; idim<fMapElectronCutLow[icut]->GetNdimensions(); idim++) {
326 TString var(fMapElectronCutLow[icut]->GetAxis(idim)->GetName());
327 fUsedVars->SetBitNumber(AliDielectronVarManager::GetValueType(var.Data()), kTRUE);
328 }
329 }
330
5720c765 331 //Fill values
332 Double_t values[AliDielectronVarManager::kNMaxValues];
a94c2e7e 333 AliDielectronVarManager::SetFillMap(fUsedVars);
5720c765 334 AliDielectronVarManager::Fill(track,values);
8df8e382 335
5720c765 336 Bool_t selected=kFALSE;
337 fPIDResponse=AliDielectronVarManager::GetPIDResponse();
338 for (UChar_t icut=0; icut<fNcuts; ++icut){
339 Double_t min=fmin[icut];
340 Double_t max=fmax[icut];
341 Double_t val=values[fActiveCuts[icut]];
8d42b5b9 342
8c2440d0 343 // test var range. In case min==max do not cut
344 if ( fVarCuts[icut] ) {
345 if ( !fVarCuts[icut]->IsSelected(part) ) continue;
346 }
347 else if ( ( (TMath::Abs(min-max)>1e-20) && (val<min || val>=max) ) ) {
348 continue;
349 }
88204efa 350
351 // check if fFunSigma is set, then check if 'part' is in sigma range of the function
352 if(fFunSigma[icut]){
353 val= fPIDResponse->NumberOfSigmasTPC(part, fPartType[icut]);
354 if (fPartType[icut]==AliPID::kElectron){
355 val-=fgCorr;
356 }
357 min= fFunSigma[icut]->Eval(part->GetTPCmomentum())+fSigmaFunLow[icut];
358 max= fFunSigma[icut]->Eval(part->GetTPCmomentum())+fSigmaFunUp[icut];
359 if(val<min || val>=max) continue;
360 }
361
8df8e382 362 switch (fDetType[icut]){
363 case kITS:
364 selected = IsSelectedITS(part,icut);
365 break;
366 case kTPC:
5317c468 367 selected = IsSelectedTPC(part,icut,values);
8df8e382 368 break;
369 case kTRD:
370 selected = IsSelectedTRD(part,icut);
371 break;
5720c765 372 case kTRDeleEff:
373 selected = IsSelectedTRDeleEff(part,icut);
374 break;
6d5dea7c 375 case kTRDeleEff2D:
376 selected = IsSelectedTRDeleEff(part,icut,AliTRDPIDResponse::kLQ2D);
377 break;
8df8e382 378 case kTOF:
379 selected = IsSelectedTOF(part,icut);
380 break;
5720c765 381 case kEMCAL:
382 selected = IsSelectedEMCAL(part,icut);
383 break;
384 }
385 if (!selected) {
386 if (esdTrack) esdTrack->SetTPCsignal(origdEdx,esdTrack->GetTPCsignalSigma(),esdTrack->GetTPCsignalN());
0c09cae4 387 else if (aodTrack){
388 AliAODPid *pid=const_cast<AliAODPid*>(aodTrack->GetDetPid());
423cc7ef 389 if (pid) pid->SetTPCsignal(origdEdx);
0c09cae4 390 }
5720c765 391
392 return kFALSE;
8df8e382 393 }
8df8e382 394 }
395
5720c765 396 if (esdTrack) esdTrack->SetTPCsignal(origdEdx,esdTrack->GetTPCsignalSigma(),esdTrack->GetTPCsignalN());
0c09cae4 397 else if (aodTrack){
398 AliAODPid *pid=const_cast<AliAODPid*>(aodTrack->GetDetPid());
423cc7ef 399 if (pid) pid->SetTPCsignal(origdEdx);
0c09cae4 400 }
8df8e382 401 return selected;
402}
403
404//______________________________________________
ffbede40 405Bool_t AliDielectronPID::IsSelectedITS(AliVTrack * const part, Int_t icut)
8df8e382 406{
407 //
408 // ITS part of the PID check
409 // Don't accept the track if there was no pid bit set
410 //
b2ad74d0 411 AliPIDResponse::EDetPidStatus pidStatus = fPIDResponse->CheckPIDStatus(AliPIDResponse::kITS,part);
412 if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kFALSE;
413 if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kTRUE;
ffbede40 414
415 Double_t mom=part->P();
164bfb53 416
5720c765 417 Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasITS(part, fPartType[icut]);
ffbede40 418
419 // test if we are supposed to use a function for the cut
420 if (fFunUpperCut[icut]) fNsigmaUp[icut] =fFunUpperCut[icut]->Eval(mom);
421 if (fFunLowerCut[icut]) fNsigmaLow[icut]=fFunLowerCut[icut]->Eval(mom);
422
8df8e382 423 Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut];
424 return selected;
425}
426
427//______________________________________________
5317c468 428Bool_t AliDielectronPID::IsSelectedTPC(AliVTrack * const part, Int_t icut, Double_t *values)
8df8e382 429{
430 //
431 // TPC part of the PID check
432 // Don't accept the track if there was no pid bit set
433 //
b2ad74d0 434 AliPIDResponse::EDetPidStatus pidStatus = fPIDResponse->CheckPIDStatus(AliPIDResponse::kTPC,part);
435 if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kFALSE;
436 if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kTRUE;
48609e3d 437
8d42b5b9 438
5720c765 439 Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasTPC(part, fPartType[icut]);
440
5317c468 441 // eta corrections
2a14a7b1 442 if (fPartType[icut]==AliPID::kElectron){
5317c468 443 // old way 1D
2a14a7b1 444 numberOfSigmas-=fgCorr;
5317c468 445 // via functions (1-3D)
61749cc7 446 numberOfSigmas-=GetCntrdCorr(part);
447 numberOfSigmas/=GetWdthCorr(part);
8df8e382 448 }
5317c468 449
450 // matching of MC and data //
451
452 // test if we are supposed to use a function for the cut (matching via fits)
453 if (fFunUpperCut[icut]) fNsigmaUp[icut] =fFunUpperCut[icut]->Eval(values[AliDielectronVarManager::kPIn]);
454 if (fFunLowerCut[icut]) fNsigmaLow[icut]=fFunLowerCut[icut]->Eval(values[AliDielectronVarManager::kPIn]);
455
456 // test if we are using cut maps (in calibrated units)
457 Double_t lowElectronCut = fNsigmaLow[icut];
458 Double_t upElectronCut = fNsigmaUp[icut];
459
460 if((fPartType[icut]==AliPID::kElectron) && (fMapElectronCutLow[icut] )) {
461 Double_t *vals = new Double_t[fMapElectronCutLow[icut]->GetNdimensions()];//={-1};
462 // get array of values for the corresponding dimensions using axis names
463 for(Int_t idim=0; idim<fMapElectronCutLow[icut]->GetNdimensions(); idim++) {
464 vals[idim] = values[AliDielectronVarManager::GetValueType(fMapElectronCutLow[icut]->GetAxis(idim)->GetName())];
2ef1eb25 465 // printf(" \t %s %.3f ",fMapElectronCutLow[icut]->GetAxis(idim)->GetName(),vals[idim]);
5317c468 466 }
467 // find bin for values (w/o creating it in case it is not filled)
468 Long_t bin = fMapElectronCutLow[icut]->GetBin(vals,kFALSE);
469 if(bin>0) lowElectronCut=fMapElectronCutLow[icut]->GetBinContent(bin);
470 else lowElectronCut=100;
2ef1eb25 471 // printf(" low cut %.3f (%ld) \n", lowElectronCut,bin);
5317c468 472 delete [] vals;
473 }
474
475
476 Bool_t selected=((numberOfSigmas>=lowElectronCut)&&(numberOfSigmas<=upElectronCut))^fExclude[icut];
8df8e382 477 return selected;
478}
479
480//______________________________________________
5720c765 481Bool_t AliDielectronPID::IsSelectedTRD(AliVTrack * const part, Int_t icut)
8df8e382 482{
483 //
484 // TRD part of the pid check
5720c765 485 // the TRD checks on the probabilities.
486 //
487
b2ad74d0 488 AliPIDResponse::EDetPidStatus pidStatus = fPIDResponse->CheckPIDStatus(AliPIDResponse::kTRD,part);
489 if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kFALSE;
490 if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kTRUE;
491
5720c765 492 if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable && (part->GetTRDntrackletsPID()<4)) return kTRUE;
493
494 Double_t p[AliPID::kSPECIES]={0.};
495 fPIDResponse->ComputeTRDProbability(part,AliPID::kSPECIES,p);
496 Float_t particleProb=p[fPartType[icut]];
497
498 Bool_t selected=((particleProb>=fNsigmaLow[icut])&&(particleProb<=fNsigmaUp[icut]))^fExclude[icut];
499 return selected;
500}
501
502//______________________________________________
6d5dea7c 503Bool_t AliDielectronPID::IsSelectedTRDeleEff(AliVTrack * const part, Int_t icut, AliTRDPIDResponse::ETRDPIDMethod PIDmethod)
5720c765 504{
8df8e382 505 //
5720c765 506 // TRD part of the pid check using electron efficiency requirement
507 // in this case the upper limit as well as the particle specie is ignored
508 // and the lower limit regarded as the requested electron efficiency
509 //
510
b2ad74d0 511 AliPIDResponse::EDetPidStatus pidStatus = fPIDResponse->CheckPIDStatus(AliPIDResponse::kTRD,part);
512 if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kFALSE;
513 if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kTRUE;
5720c765 514
6d5dea7c 515 Double_t centrality = -1.;
516 if(part->IsA() == AliESDtrack::Class())
517 centrality=(const_cast<AliESDEvent*>( (static_cast<const AliESDtrack*>(part))->GetESDEvent()) )->GetCentrality()->GetCentralityPercentile("V0M");
518 if(part->IsA() == AliAODTrack::Class())
519 centrality=(const_cast<AliAODEvent*>( (static_cast<const AliAODTrack*>(part))->GetAODEvent()) )->GetCentrality()->GetCentralityPercentile("V0M");
520
521 Bool_t selected=fPIDResponse->IdentifiedAsElectronTRD(part,fNsigmaLow[icut], centrality, PIDmethod)^fExclude[icut];
5720c765 522 return selected;
8df8e382 523}
524
525//______________________________________________
ffbede40 526Bool_t AliDielectronPID::IsSelectedTOF(AliVTrack * const part, Int_t icut)
8df8e382 527{
528 //
529 // TOF part of the PID check
530 // Don't accept the track if there was no pid bit set
531 //
b2ad74d0 532 AliPIDResponse::EDetPidStatus pidStatus = fPIDResponse->CheckPIDStatus(AliPIDResponse::kTOF,part);
533 if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kFALSE;
534 if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&(pidStatus!=AliPIDResponse::kDetPidOk)) return kTRUE;
5720c765 535
536 Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasTOF(part, fPartType[icut]);
8df8e382 537
538 Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut];
539 return selected;
540}
541
5720c765 542//______________________________________________
543Bool_t AliDielectronPID::IsSelectedEMCAL(AliVTrack * const part, Int_t icut)
544{
545 //
546 // emcal pid selecttion
547 //
548
549 //TODO: correct way to check for emcal pid?
550 Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasEMCAL(part, fPartType[icut]);
551
552 Bool_t hasPID=numberOfSigmas>-998.;
553
554 if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&!hasPID) return kFALSE;
555 if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&!hasPID) return kTRUE;
556
557
558 Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut];
559 return selected;
560}
561
8df8e382 562//______________________________________________
563void AliDielectronPID::SetDefaults(Int_t def){
564 //
565 // initialise default pid strategies
566 //
567
568 if (def==0){
569 // 2sigma bands TPC:
570 // - include e
571 // - exclude mu,K,pi,p
572 // -complete p range
573 AddCut(kTPC,AliPID::kElectron,2);
574 AddCut(kTPC,AliPID::kMuon,-2.,2.,0.,0.,kTRUE);
575 AddCut(kTPC,AliPID::kPion,-2.,2.,0.,0.,kTRUE);
576 AddCut(kTPC,AliPID::kKaon,-2.,2.,0.,0.,kTRUE);
577 AddCut(kTPC,AliPID::kProton,-2.,2.,0.,0.,kTRUE);
578 } else if (def==1) {
579 // 2sigma bands TPC:
580 // - include e 0<p<inf
581 // - exclude mu,K,pi,p 0<p<2
8df8e382 582 AddCut(kTPC,AliPID::kElectron,2.);
583 AddCut(kTPC,AliPID::kMuon,-2.,2.,0.,2.,kTRUE);
584 AddCut(kTPC,AliPID::kPion,-2.,2.,0.,2.,kTRUE);
585 AddCut(kTPC,AliPID::kKaon,-2.,2.,0.,2.,kTRUE);
586 AddCut(kTPC,AliPID::kProton,-2.,2.,0.,2.,kTRUE);
587
588 } else if (def==2) {
589 // include 2sigma e TPC
590 // 3sigma bands TOF
591 // - exclude K,P
48609e3d 592 AddCut(kTPC,AliPID::kElectron,-3.,3.);
3505bfad 593 AddCut(kTPC,AliPID::kPion,-3.,3.,0.,0.,kTRUE);
594 AddCut(kTPC,AliPID::kProton,-3.,3.,0.,0.,kTRUE);
8df8e382 595
5720c765 596 } else if (def==3 || def==4) { // def3 and def4 are the same??
8df8e382 597 // include 2sigma e TPC
598 // 3sigma bands TOF
599 // - exclude K 0<p<1
600 // - exclude P 0<p<2
601 AddCut(kTPC,AliPID::kElectron,2);
602 AddCut(kTOF,AliPID::kKaon,-3.,3.,0.,1.,kTRUE);
603 AddCut(kTOF,AliPID::kProton,-6.,6.,0.,1.,kTRUE);
604 AddCut(kTOF,AliPID::kProton,-3.,3.,1.,2.,kTRUE);
605
8df8e382 606 } else if (def==5) {
607 AddCut(kTPC,AliPID::kElectron,-0.5,3);
608 AddCut(kTOF,AliPID::kElectron,-3,3,0,1.5);
609 } else if (def==6) {
610 // lower cut TPC: parametrisation by HFE
611 // upper cut TPC: 3 sigma
612 // TOF ele band 3sigma 0<p<1.5GeV
613 TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)", 0, 100);
614 lowerCut->SetParameters(-2.7,-0.4357);
615 AddCut(kTPC,AliPID::kElectron,lowerCut,3.);
616 AddCut(kTOF,AliPID::kElectron,-3,3,0,1.5);
617 } else if (def==7) {
61d106d3 618 // wide TPC cut
8df8e382 619 // TOF ele band 3sigma 0<p<1.5GeV
620 AddCut(kTPC,AliPID::kElectron,10.);
621 AddCut(kTOF,AliPID::kElectron,-3,3,0,1.5);
61d106d3 622 } else if (def==8) {
623 // TOF 5 sigma inclusion if TOFpid available
624 // this should reduce K,p,Pi to a large extent
625 AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable);
626 } else if (def==9) {
627 // lower cut TPC: parametrisation by HFE
628 // upper cut TPC: 3 sigma
629 // TOF 5 sigma inclusion if TOFpid available
630 // this should reduce K,p,Pi to a large extent
631 TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)", 0, 100);
164bfb53 632 lowerCut->SetParameters(-2.65,-0.6757);
633 AddCut(kTPC,AliPID::kElectron,lowerCut,4.);
61d106d3 634 AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable);
ba15fdfb 635
61d106d3 636 } else if (def==10) {
637 AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable);
638 AddCut(kTPC,AliPID::kElectron,3.);
639 AddCut(kTPC,AliPID::kPion,-3.,3.,0.,0.,kTRUE);
640 AddCut(kTPC,AliPID::kProton,-3.,3.,0.,0.,kTRUE);
641
ba15fdfb 642 } else if (def==11) {
643 // lower cut TPC: parametrisation by HFE
644 // only use from period d on !!
645 // upper cut TPC: 3 sigma
646 // TOF ele band 3sigma 0<p<2.0GeV
647 TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)+[2]", 0, 100);
648 lowerCut->SetParameters(-3.718,-0.4,0.27);
649 AddCut(kTPC,AliPID::kElectron,lowerCut,3.);
650 AddCut(kTOF,AliPID::kElectron,-3,3,0,2.);
651 } else if (def==12) {
652 // lower cut TPC: parametrisation by HFE
653 // only use from period d on !!
654 // upper cut TPC: 3 sigma
655 // TOF 5 sigma inclusion if TOFpid available
656 // this should reduce K,p,Pi to a large extent
657 TF1 *lowerCut=new TF1("lowerCut", "[0] * TMath::Exp([1]*x)+[2]", 0, 100);
658 lowerCut->SetParameters(-3.718,-0.4,0.27);
659 AddCut(kTPC,AliPID::kElectron,lowerCut,4.);
660 AddCut(kTOF,AliPID::kElectron,-5,5,0,200,kFALSE,AliDielectronPID::kIfAvailable);
8df8e382 661 }
882407d7 662 else if (def==13) {
663 // TPC electron inclusion
664 // TOF electron inclusion if available
8d42b5b9 665 AddCut(kTOF,AliPID::kElectron,-3.,3.,0,200,kFALSE,AliDielectronPID::kIfAvailable);
666 AddCut(kTPC,AliPID::kElectron,10.);
882407d7 667 }
069b0c7a 668 else if (def==14) {
669 // TRD 1D 90% elec eff, 4-6 tracklets
670 // TPC electron inclusion
671 // TOF electron inclusion if available
672 AddCut(AliDielectronPID::kTRDeleEff,AliPID::kElectron,.9,1.,3.5,6.,kFALSE,
673 AliDielectronPID::kIfAvailable,AliDielectronVarManager::kTRDpidQuality);
8d42b5b9 674 AddCut(kTOF,AliPID::kElectron,-3.,3.,0,200,kFALSE,AliDielectronPID::kIfAvailable);
675 AddCut(kTPC,AliPID::kElectron,10.);
069b0c7a 676 }
677 else if (def==15) {
678 // TRD 1D 90% elec eff, 4-6 tracklets, chi2 < 2
679 // TPC electron inclusion
680 // TOF electron inclusion if available
681 AddCut(AliDielectronPID::kTRDeleEff,AliPID::kElectron,.9,1.,3.5,6.,kFALSE,
682 AliDielectronPID::kIfAvailable,AliDielectronVarManager::kTRDpidQuality);
683 AddCut(AliDielectronPID::kTRDeleEff,AliPID::kElectron,.9,1.,0.,2.,kFALSE,
684 AliDielectronPID::kIfAvailable,AliDielectronVarManager::kTRDchi2);
8d42b5b9 685 AddCut(kTOF,AliPID::kElectron,-3.,3.,0,200,kFALSE,AliDielectronPID::kIfAvailable);
686 AddCut(kTPC,AliPID::kElectron,10.);
687 }
688 else if (def==16) {
689 // TPC electron inclusion
690 // TOF electron inclusion if available
691 AddCut(kTOF,AliPID::kElectron,-3.,3.,0,200,kFALSE,AliDielectronPID::kIfAvailable);
692 AddCut(kTPC,AliPID::kElectron,-3.5,+3.5);
6675aa47 693 }
ba15fdfb 694
8df8e382 695}
696
48609e3d 697//______________________________________________
698void AliDielectronPID::SetCorrVal(Double_t run)
699{
700 //
701 // set correction value for run
702 //
d327d9cd 703 fgCorr=0.;
704 fgCorrdEdx=1.;
705
706 if (fgFitCorr){
707 fgCorr=fgFitCorr->Eval(run);
708 if (run<fgFitCorr->GetX()[0]) fgCorr=fgFitCorr->GetY()[0];
709 if (run>fgFitCorr->GetX()[fgFitCorr->GetN()-1]) fgCorr=fgFitCorr->GetY()[fgFitCorr->GetN()-1];
710 }
711
712 if (fgdEdxRunCorr){
713 fgCorrdEdx=fgdEdxRunCorr->Eval(run);
714 if (run<fgdEdxRunCorr->GetX()[0]) fgCorrdEdx=fgdEdxRunCorr->GetY()[0];
715 if (run>fgdEdxRunCorr->GetX()[fgFitCorr->GetN()-1]) fgCorrdEdx=fgdEdxRunCorr->GetY()[fgdEdxRunCorr->GetN()-1];
716 }
48609e3d 717}
718
5720c765 719//______________________________________________
0c09cae4 720Double_t AliDielectronPID::GetEtaCorr(const AliVTrack *track)
5720c765 721{
722 //
723 // return eta correction
724 //
725 if (!fgFunEtaCorr) return 1;
726 return fgFunEtaCorr->Eval(track->Eta());
727}
61749cc7 728
61749cc7 729//______________________________________________
9ad9e048 730Double_t AliDielectronPID::GetPIDCorr(const AliVTrack *track, TH1 *hist)
61749cc7 731{
732 //
733 // return correction value
734 //
5317c468 735 //TODO: think about taking an values array as argument to reduce # var fills
61749cc7 736
737 //Fill only event and vparticle values (otherwise we end up in a circle)
738 Double_t values[AliDielectronVarManager::kNMaxValues];
739 AliDielectronVarManager::FillVarVParticle(track,values);
740
9ad9e048 741 TF1 *fun = (TF1*)hist->GetListOfFunctions()->At(0);
61749cc7 742 Int_t dim=fun->GetNdim();
9ad9e048 743
61749cc7 744 Double_t var[3] = {0.,0.,0.};
9ad9e048 745 if(dim>0) var[0] = values[hist->GetXaxis()->GetUniqueID()];
746 if(dim>1) var[1] = values[hist->GetYaxis()->GetUniqueID()];
747 if(dim>2) var[2] = values[hist->GetZaxis()->GetUniqueID()];
61749cc7 748 Double_t corr = fun->Eval(var[0],var[1],var[2]);
30f9a393 749 // printf("%d-dim CORR value: %f (track %p) \n",dim,corr,track);
61749cc7 750 return corr;
751}