1 /*************************************************************************
2 * Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
16 ///////////////////////////////////////////////////////////////////////////
26 ///////////////////////////////////////////////////////////////////////////
33 #include <AliVTrack.h>
34 #include <AliVCluster.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>
43 #include "AliDielectronVarManager.h"
44 #include "AliDielectronVarCuts.h"
46 #include "AliDielectronPID.h"
48 ClassImp(AliDielectronPID)
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;
58 AliDielectronPID::AliDielectronPID() :
60 fUsedVars(new TBits(AliDielectronVarManager::kNMaxValues)),
65 // Default Constructor
67 for (Int_t icut=0; icut<kNmaxPID; ++icut){
69 fPartType[icut]=AliPID::kPion;
74 fExclude[icut]=kFALSE;
75 fFunUpperCut[icut]=0x0;
76 fFunLowerCut[icut]=0x0;
77 fRequirePIDbit[icut]=0;
83 fMapElectronCutLow[icut]=0x0;
87 //______________________________________________
88 AliDielectronPID::AliDielectronPID(const char* name, const char* title) :
89 AliAnalysisCuts(name, title),
90 fUsedVars(new TBits(AliDielectronVarManager::kNMaxValues)),
97 for (Int_t icut=0; icut<kNmaxPID; ++icut){
99 fPartType[icut]=AliPID::kPion;
104 fExclude[icut]=kFALSE;
105 fFunUpperCut[icut]=0x0;
106 fFunLowerCut[icut]=0x0;
107 fRequirePIDbit[icut]=0;
109 fSigmaFunLow[icut]=0;
113 fMapElectronCutLow[icut]=0x0;
117 //______________________________________________
118 AliDielectronPID::~AliDielectronPID()
121 // Default Destructor
123 if (fUsedVars) delete fUsedVars;
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*/)
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
139 if (fNcuts>=kNmaxPID){
140 AliError(Form("only %d pid cut ranges allowed",kNmaxPID));
143 if (TMath::Abs(nSigmaUp+99999.)<1e-20){
144 nSigmaUp=TMath::Abs(nSigmaLow);
145 nSigmaLow=-1.*nSigmaUp;
147 fDetType[fNcuts]=det;
148 fPartType[fNcuts]=type;
149 fNsigmaLow[fNcuts]=nSigmaLow;
150 fNsigmaUp[fNcuts]=nSigmaUp;
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);
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])));
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*/)
172 // cut using a TF1 as upper cut
175 AliError("A valid function is required for the upper cut. Not adding the cut!");
178 fFunUpperCut[fNcuts]=funUp;
179 AddCut(det,type,nSigmaLow,0.,min,max,exclude,pidBitType,var);
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*/)
188 // cut using a TF1 as lower cut
191 AliError("A valid function is required for the lower cut. Not adding the cut!");
194 fFunLowerCut[fNcuts]=funLow;
195 AddCut(det,type,0.,nSigmaUp,min,max,exclude,pidBitType,var);
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*/)
204 // cut using a TF1 as lower and upper cut
206 if ( (funUp==0x0) || (funLow==0x0) ){
207 AliError("A valid function is required for upper and lower cut. Not adding the cut!");
210 fFunUpperCut[fNcuts]=funUp;
211 fFunLowerCut[fNcuts]=funLow;
212 AddCut(det,type,0.,0.,min,max,exclude,pidBitType,var);
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)
221 // cut using a TF1 as lower cut
224 AliError("A valid function is required for the sigma cut. Not adding the cut!");
227 fFunSigma[fNcuts]=funSigma;
228 fSigmaFunLow[fNcuts]=min;
229 fSigmaFunUp[fNcuts]=max;
231 AddCut(det,type,nSigmaLow,nSigmaUp,0,0,exclude,pidBitType,-1);
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*/)
240 // cut using a THnBase as a lower cut
243 AliError("A valid histogram is required for the lower cut. Not adding the cut!");
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);
252 AddCut(det,type,0.,nSigmaUp,min,max,exclude,pidBitType,var);
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*/)
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
267 if (fNcuts>=kNmaxPID){
268 AliError(Form("only %d pid cut ranges allowed",kNmaxPID));
271 if (TMath::Abs(nSigmaUp+99999.)<1e-20){
272 nSigmaUp=TMath::Abs(nSigmaLow);
273 nSigmaLow=-1.*nSigmaUp;
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;
283 AliDebug(1,Form("Add PID cut %d: sigma [% .1f,% .1f] \n",
284 fNcuts,nSigmaLow,nSigmaUp));
290 //______________________________________________
291 Bool_t AliDielectronPID::IsSelected(TObject* track)
298 AliVTrack *part=static_cast<AliVTrack*>(track);
299 AliESDtrack *esdTrack=0x0;
300 AliAODTrack *aodTrack=0x0;
301 Double_t origdEdx=-1;
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());
312 origdEdx=pid->GetTPCsignal();
313 pid->SetTPCsignal(origdEdx/GetEtaCorr(aodTrack)/fgCorrdEdx);
317 // check for corrections and add their variables to the fill map
319 fUsedVars->SetBitNumber(fgFunCntrdCorr->GetXaxis()->GetUniqueID(), kTRUE);
320 fUsedVars->SetBitNumber(fgFunCntrdCorr->GetYaxis()->GetUniqueID(), kTRUE);
321 fUsedVars->SetBitNumber(fgFunCntrdCorr->GetZaxis()->GetUniqueID(), kTRUE);
324 fUsedVars->SetBitNumber(fgFunWdthCorr->GetXaxis()->GetUniqueID(), kTRUE);
325 fUsedVars->SetBitNumber(fgFunWdthCorr->GetYaxis()->GetUniqueID(), kTRUE);
326 fUsedVars->SetBitNumber(fgFunWdthCorr->GetZaxis()->GetUniqueID(), kTRUE);
330 Double_t values[AliDielectronVarManager::kNMaxValues];
331 AliDielectronVarManager::SetFillMap(fUsedVars);
332 AliDielectronVarManager::Fill(track,values);
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]];
341 // test var range. In case min==max do not cut
342 if ( fVarCuts[icut] ) {
343 if ( !fVarCuts[icut]->IsSelected(part) ) continue;
345 else if ( ( (TMath::Abs(min-max)>1e-20) && (val<min || val>=max) ) ) {
349 // check if fFunSigma is set, then check if 'part' is in sigma range of the function
351 val= fPIDResponse->NumberOfSigmasTPC(part, fPartType[icut]);
352 if (fPartType[icut]==AliPID::kElectron){
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;
360 switch (fDetType[icut]){
362 selected = IsSelectedITS(part,icut);
365 selected = IsSelectedTPC(part,icut,values);
368 selected = IsSelectedTRD(part,icut);
371 selected = IsSelectedTRDeleEff(part,icut);
374 selected = IsSelectedTRDeleEff(part,icut,AliTRDPIDResponse::kLQ2D);
377 selected = IsSelectedTOF(part,icut);
380 selected = IsSelectedEMCAL(part,icut);
384 if (esdTrack) esdTrack->SetTPCsignal(origdEdx,esdTrack->GetTPCsignalSigma(),esdTrack->GetTPCsignalN());
386 AliAODPid *pid=const_cast<AliAODPid*>(aodTrack->GetDetPid());
387 if (pid) pid->SetTPCsignal(origdEdx);
394 if (esdTrack) esdTrack->SetTPCsignal(origdEdx,esdTrack->GetTPCsignalSigma(),esdTrack->GetTPCsignalN());
396 AliAODPid *pid=const_cast<AliAODPid*>(aodTrack->GetDetPid());
397 if (pid) pid->SetTPCsignal(origdEdx);
402 //______________________________________________
403 Bool_t AliDielectronPID::IsSelectedITS(AliVTrack * const part, Int_t icut)
406 // ITS part of the PID check
407 // Don't accept the track if there was no pid bit set
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;
413 Double_t mom=part->P();
415 Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasITS(part, fPartType[icut]);
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);
421 Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut];
425 //______________________________________________
426 Bool_t AliDielectronPID::IsSelectedTPC(AliVTrack * const part, Int_t icut, Double_t *values)
429 // TPC part of the PID check
430 // Don't accept the track if there was no pid bit set
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;
437 Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasTPC(part, fPartType[icut]);
440 if (fPartType[icut]==AliPID::kElectron){
442 numberOfSigmas-=fgCorr;
443 // via functions (1-3D)
444 numberOfSigmas-=GetCntrdCorr(part);
445 numberOfSigmas/=GetWdthCorr(part);
448 // matching of MC and data //
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]);
454 // test if we are using cut maps (in calibrated units)
455 Double_t lowElectronCut = fNsigmaLow[icut];
456 Double_t upElectronCut = fNsigmaUp[icut];
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]);
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);
474 Bool_t selected=((numberOfSigmas>=lowElectronCut)&&(numberOfSigmas<=upElectronCut))^fExclude[icut];
478 //______________________________________________
479 Bool_t AliDielectronPID::IsSelectedTRD(AliVTrack * const part, Int_t icut)
482 // TRD part of the pid check
483 // the TRD checks on the probabilities.
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;
490 if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable && (part->GetTRDntrackletsPID()<4)) return kTRUE;
492 Double_t p[AliPID::kSPECIES]={0.};
493 fPIDResponse->ComputeTRDProbability(part,AliPID::kSPECIES,p);
494 Float_t particleProb=p[fPartType[icut]];
496 Bool_t selected=((particleProb>=fNsigmaLow[icut])&&(particleProb<=fNsigmaUp[icut]))^fExclude[icut];
500 //______________________________________________
501 Bool_t AliDielectronPID::IsSelectedTRDeleEff(AliVTrack * const part, Int_t icut, AliTRDPIDResponse::ETRDPIDMethod PIDmethod)
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
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;
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");
519 Bool_t selected=fPIDResponse->IdentifiedAsElectronTRD(part,fNsigmaLow[icut], centrality, PIDmethod)^fExclude[icut];
523 //______________________________________________
524 Bool_t AliDielectronPID::IsSelectedTOF(AliVTrack * const part, Int_t icut)
527 // TOF part of the PID check
528 // Don't accept the track if there was no pid bit set
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;
534 Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasTOF(part, fPartType[icut]);
536 Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut];
540 //______________________________________________
541 Bool_t AliDielectronPID::IsSelectedEMCAL(AliVTrack * const part, Int_t icut)
544 // emcal pid selecttion
547 //TODO: correct way to check for emcal pid?
548 Float_t numberOfSigmas=fPIDResponse->NumberOfSigmasEMCAL(part, fPartType[icut]);
550 Bool_t hasPID=numberOfSigmas>-998.;
552 if (fRequirePIDbit[icut]==AliDielectronPID::kRequire&&!hasPID) return kFALSE;
553 if (fRequirePIDbit[icut]==AliDielectronPID::kIfAvailable&&!hasPID) return kTRUE;
556 Bool_t selected=((numberOfSigmas>=fNsigmaLow[icut])&&(numberOfSigmas<=fNsigmaUp[icut]))^fExclude[icut];
560 //______________________________________________
561 void AliDielectronPID::SetDefaults(Int_t def){
563 // initialise default pid strategies
569 // - exclude mu,K,pi,p
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);
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);
587 // include 2sigma e TPC
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);
594 } else if (def==3 || def==4) { // def3 and def4 are the same??
595 // include 2sigma e TPC
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);
605 AddCut(kTPC,AliPID::kElectron,-0.5,3);
606 AddCut(kTOF,AliPID::kElectron,-3,3,0,1.5);
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);
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);
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);
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);
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);
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);
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.);
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.);
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.);
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);
695 //______________________________________________
696 void AliDielectronPID::SetCorrVal(Double_t run)
699 // set correction value for run
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];
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];
717 //______________________________________________
718 Double_t AliDielectronPID::GetEtaCorr(const AliVTrack *track)
721 // return eta correction
723 if (!fgFunEtaCorr) return 1;
724 return fgFunEtaCorr->Eval(track->Eta());
727 //______________________________________________
728 Double_t AliDielectronPID::GetPIDCorr(const AliVTrack *track, TH1 *hist)
731 // return correction value
733 //TODO: think about taking an values array as argument to reduce # var fills
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);
739 TF1 *fun = (TF1*)hist->GetListOfFunctions()->At(0);
740 Int_t dim=(fun?fun->GetNdim():hist->GetDimension());
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()];
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);