[u/mrichter/AliRoot.git] / PWG3 / hfe / AliHFEpidTPC.cxx

/**************************************************************************
* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
*                                                                        *
* Author: The ALICE Off-line Project.                                    *
* Contributors are mentioned in the code where appropriate.              *
*                                                                        *
* Permission to use, copy, modify and distribute this software and its   *
* documentation strictly for non-commercial purposes is hereby granted   *
* without fee, provided that the above copyright notice appears in all   *
* copies and that both the copyright notice and this permission notice   *
* appear in the supporting documentation. The authors make no claims     *
* about the suitability of this software for any purpose. It is          *
* provided "as is" without express or implied warranty.                  *
**************************************************************************/
//
// Class for TPC PID
// Implements the abstract base class AliHFEpidBase
// 
// Class contains TPC specific cuts and QA histograms
// Two selection strategies are offered: Selection of certain value
// regions in the TPC dE/dx (by IsSelected), and likelihoods
//
// Authors: 
//
//   Markus Fasel <M.Fasel@gsi.de> 
//   Markus Heide <mheide@uni-muenster.de> 
//  
#include <TF1.h>
#include <TMath.h>

#include "AliAODpidUtil.h"
#include "AliAODPid.h"
#include "AliAODTrack.h"
#include "AliAODMCParticle.h"
#include "AliESDtrack.h"
#include "AliExternalTrackParam.h"
#include "AliLog.h"
#include "AliMCParticle.h"
#include "AliPID.h"
#include "AliESDpid.h"

#include "AliHFEpidTPC.h"
#include "AliHFEpidQAmanager.h"

ClassImp(AliHFEpidTPC)

//___________________________________________________________________
AliHFEpidTPC::AliHFEpidTPC() :
  // add a list here
  AliHFEpidBase()
  , fLineCrossingsEnabled(0)
  , fUpperSigmaCut(NULL)
  , fLowerSigmaCut(NULL)
  , fElectronMeanCorrection(NULL)
  , fNsigmaTPC(3)
  , fRejectionEnabled(0)
  , fPID(NULL)
{
  //
  // default  constructor
  // 
  memset(fRejection, 0, sizeof(Float_t) * 4 * AliPID::kSPECIES);
  memset(fLineCrossingSigma, 0, sizeof(Double_t) * AliPID::kSPECIES);
  memset(fPAsigCut, 0, sizeof(Float_t) * 2);
  memset(fNAsigmaTPC, 0, sizeof(Float_t) * 2);

}

//___________________________________________________________________
AliHFEpidTPC::AliHFEpidTPC(const char* name) :
  // add a list here
  AliHFEpidBase(name)
  , fLineCrossingsEnabled(0)
  , fUpperSigmaCut(NULL)
  , fLowerSigmaCut(NULL)
  , fElectronMeanCorrection(NULL)
  , fNsigmaTPC(3)
  , fRejectionEnabled(0)
  , fPID(NULL)
{
  //
  // default  constructor
  // 
  //
  memset(fRejection, 0, sizeof(Float_t) * 4 * AliPID::kSPECIES);
  memset(fLineCrossingSigma, 0, sizeof(Double_t) * AliPID::kSPECIES);
  memset(fPAsigCut, 0, sizeof(Float_t) * 2);
  memset(fNAsigmaTPC, 0, sizeof(Float_t) * 2);
  fPID = new AliPID;
}

//___________________________________________________________________
AliHFEpidTPC::AliHFEpidTPC(const AliHFEpidTPC &ref) :
  AliHFEpidBase("")
  , fLineCrossingsEnabled(0)
  , fUpperSigmaCut(NULL)
  , fLowerSigmaCut(NULL)
  , fElectronMeanCorrection(NULL)
  , fNsigmaTPC(2)
  , fRejectionEnabled(0)
  , fPID(NULL)
{
  //
  // Copy constructor
  //
  ref.Copy(*this);
}

//___________________________________________________________________
AliHFEpidTPC &AliHFEpidTPC::operator=(const AliHFEpidTPC &ref){
  //
  // Assignment operator
  //
  if(this != &ref){
    ref.Copy(*this);
  } 
  return *this;
}
//___________________________________________________________________
void AliHFEpidTPC::Copy(TObject &o) const{
  //
  // Copy function 
  // called in copy constructor and assigment operator
  //
  AliHFEpidTPC &target = dynamic_cast<AliHFEpidTPC &>(o);

  target.fLineCrossingsEnabled = fLineCrossingsEnabled;
  target.fUpperSigmaCut = fUpperSigmaCut;
  target.fLowerSigmaCut = fLowerSigmaCut;
  target.fElectronMeanCorrection = fElectronMeanCorrection;
  target.fNsigmaTPC = fNsigmaTPC;
  target.fRejectionEnabled = fRejectionEnabled;
  target.fPID = new AliPID(*fPID);
  memcpy(target.fLineCrossingSigma, fLineCrossingSigma, sizeof(Double_t) * AliPID::kSPECIES);
  memcpy(target.fPAsigCut, fPAsigCut, sizeof(Float_t) * 2);
  memcpy(target.fNAsigmaTPC, fNAsigmaTPC, sizeof(Float_t) * 2);
 
  AliHFEpidBase::Copy(target);
}

//___________________________________________________________________
AliHFEpidTPC::~AliHFEpidTPC(){
  //
  // Destructor
  //
  if(fPID) delete fPID;
}

//___________________________________________________________________
Bool_t AliHFEpidTPC::InitializePID(){
  //
  // Add TPC dE/dx Line crossings
  //
  //AddTPCdEdxLineCrossing(AliPID::kKaon, 0.3, 0.018);
  //AddTPCdEdxLineCrossing(AliPID::kProton, 0.9, 0.054);
  return kTRUE;
}

//___________________________________________________________________
Int_t AliHFEpidTPC::IsSelected(const AliHFEpidObject *track, AliHFEpidQAmanager *pidqa) const
{
  //
  // For the TPC pid we use the 2-sigma band around the bethe bloch curve
  // for electrons
  // exclusion of the crossing points
  //

  if((!fESDpid && track->IsESDanalysis()) || (!fAODpid && track->IsAODanalysis())) return 0;
  
  // QA before selection
  if(pidqa) pidqa->ProcessTrack(track, AliHFEpid::kTPCpid, AliHFEdetPIDqa::kBeforePID);
  AliDebug(1, "Doing TPC PID based on n-Sigma cut approach");
  AliHFEpidObject::AnalysisType_t anatype = track->IsESDanalysis() ? AliHFEpidObject::kESDanalysis : AliHFEpidObject::kAODanalysis;
  Float_t nsigma = NumberOfSigmas(track->GetRecTrack(), AliPID::kElectron, anatype);
  AliDebug(1, Form("TPC NSigma: %f", nsigma));
  // exclude crossing points:
  // Determine the bethe values for each particle species
  Bool_t isLineCrossing = kFALSE;
  for(Int_t ispecies = 0; ispecies < AliPID::kSPECIES; ispecies++){
    if(ispecies == AliPID::kElectron) continue;
    if(!(fLineCrossingsEnabled & 1 << ispecies)) continue;
    if(TMath::Abs(NumberOfSigmas(track->GetRecTrack(), (AliPID::EParticleType)ispecies, anatype)) < fLineCrossingSigma[ispecies] && TMath::Abs(nsigma) < fNsigmaTPC){
      // Point in a line crossing region, no PID possible, but !PID still possible ;-)
      isLineCrossing = kTRUE;      
      break;
    }
  }
  if(isLineCrossing) return 0;

  // Check particle rejection
  if(HasParticleRejection()){
    Int_t reject = Reject(track->GetRecTrack(), anatype);
    if(reject != 0) return reject;
  }

  // Check if we have an asymmetric sigma model set
  Int_t pdg = 0;
  if(fUpperSigmaCut || fLowerSigmaCut){
    pdg = CutSigmaModel(track->GetRecTrack(), anatype) ? 11 : 0;
  } else { 
    // Perform Asymmetric n-sigma cut if required, else perform symmetric TPC sigma cut
    Float_t p = 0.;
    if(HasAsymmetricSigmaCut() && (p = track->GetRecTrack()->P()) >= fPAsigCut[0] && p <= fPAsigCut[1]){ 
      if(nsigma >= fNAsigmaTPC[0] && nsigma <= fNAsigmaTPC[1]) pdg = 11; 
    } else {
      if(TMath::Abs(nsigma) < fNsigmaTPC ) pdg = 11;
    }
  }
  if(pidqa && pdg != 0) pidqa->ProcessTrack(track, AliHFEpid::kTPCpid, AliHFEdetPIDqa::kAfterPID);
  return pdg;

}

//___________________________________________________________________
Bool_t AliHFEpidTPC::CutSigmaModel(const AliVParticle *track, AliHFEpidObject::AnalysisType_t anaType) const {
  //
  // N SigmaCut using parametrization of the cuts
  //
  Bool_t isSelected = kTRUE;
  Float_t nsigma = NumberOfSigmas(track, AliPID::kElectron, anaType);
  Double_t p = GetP(track, anaType);
  if(fUpperSigmaCut && nsigma > fUpperSigmaCut->Eval(p)) isSelected = kFALSE;
  if(fLowerSigmaCut && nsigma < fLowerSigmaCut->Eval(p)) isSelected = kFALSE;
  return isSelected;
}

//___________________________________________________________________
Int_t AliHFEpidTPC::Reject(const AliVParticle *track, AliHFEpidObject::AnalysisType_t anaType) const{
  //
  // reject particles based on asymmetric sigma cut
  //
  Int_t pdc[AliPID::kSPECIES] = {11,13,211,321,2212};
  Double_t p = GetP(track, anaType);
  for(Int_t ispec = 0; ispec < AliPID::kSPECIES; ispec++){
    if(!TESTBIT(fRejectionEnabled, ispec)) continue;
    // Particle rejection enabled
    if(p < fRejection[4*ispec] || p > fRejection[4*ispec+2]) continue;
    Double_t sigma = NumberOfSigmas(track, static_cast<AliPID::EParticleType>(ispec), anaType);
    if(sigma >= fRejection[4*ispec+1] && sigma <= fRejection[4*ispec+3]) return pdc[ispec] * track->Charge();
  }
  return 0;
}

//___________________________________________________________________
void AliHFEpidTPC::AddTPCdEdxLineCrossing(Int_t species, Double_t sigma){
  //
  // Add exclusion point for the TPC PID where a dEdx line crosses the electron line
  // Stores line center and line sigma
  //
  if(species >= AliPID::kSPECIES){
    AliError("Species doesn't exist");
    return;
  }
  fLineCrossingsEnabled |= 1 << species;
  fLineCrossingSigma[species] = sigma;
}

//___________________________________________________________________
Double_t AliHFEpidTPC::NumberOfSigmas(const AliVParticle *track, AliPID::EParticleType species, AliHFEpidObject::AnalysisType_t anaType) const {
  //    
  // Get the number of sigmas
  //
  Double_t nSigmas = 100;
  if(anaType == AliHFEpidObject::kESDanalysis){
    // ESD analysis
    const AliESDtrack *esdtrack = dynamic_cast<const AliESDtrack *>(track);
    if(esdtrack && fESDpid) nSigmas = fESDpid->NumberOfSigmasTPC(esdtrack, species);
  } else {
    const AliAODTrack *aodtrack = dynamic_cast<const AliAODTrack *>(track);
    if(aodtrack && fAODpid) nSigmas = fAODpid->NumberOfSigmasTPC(aodtrack, species);
  }
  // Correct for the mean o
  if(fElectronMeanCorrection)
    nSigmas -= fElectronMeanCorrection->Eval(GetP(track, anaType));   
  return nSigmas;
}

//___________________________________________________________________
Double_t AliHFEpidTPC::GetP(const AliVParticle *track, AliHFEpidObject::AnalysisType_t anatype) const {
  //
  // Get the momentum at the inner wall of the TPC
  //
  Double_t p = -1;
  if(anatype == AliHFEpidObject::kESDanalysis){
    // ESD analysis: Use Inner Params for the momentum estimate
    const AliESDtrack *esdtrack = dynamic_cast<const AliESDtrack *>(track);
    if(esdtrack) p = esdtrack->GetInnerParam() ? esdtrack->GetInnerParam()->GetP() : esdtrack->P();
  } else { 
    // AOD analysis: Use TPC momentum stored in the AliAODpid object
    const AliAODTrack *aodtrack = dynamic_cast<const AliAODTrack *>(track);
    if(aodtrack) p = aodtrack->GetDetPid() ? aodtrack->GetDetPid()->GetTPCmomentum() : aodtrack->P();
  }
  return p;
}
Commit	Line	Data
809a4336	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, 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	**************************************************************************/
50685501	15	//
	16	// Class for TPC PID
	17	// Implements the abstract base class AliHFEpidBase
	18	//
	19	// Class contains TPC specific cuts and QA histograms
	20	// Two selection strategies are offered: Selection of certain value
	21	// regions in the TPC dE/dx (by IsSelected), and likelihoods
	22	//
	23	// Authors:
	24	//
	25	// Markus Fasel <M.Fasel@gsi.de>
	26	// Markus Heide <mheide@uni-muenster.de>
	27	//
faee3b18	28	#include <TF1.h>
809a4336	29	#include <TMath.h>
809a4336	30
3a72645a	31	#include "AliAODpidUtil.h"
6555e2ad	32	#include "AliAODPid.h"
722347d8	33	#include "AliAODTrack.h"
722347d8	34	#include "AliAODMCParticle.h"
809a4336	35	#include "AliESDtrack.h"
	36	#include "AliExternalTrackParam.h"
	37	#include "AliLog.h"
722347d8	38	#include "AliMCParticle.h"
809a4336	39	#include "AliPID.h"
10d100d4	40	#include "AliESDpid.h"
809a4336	41
809a4336	42	#include "AliHFEpidTPC.h"
3a72645a	43	#include "AliHFEpidQAmanager.h"
809a4336	44
faee3b18	45	ClassImp(AliHFEpidTPC)
809a4336	46
3a72645a	47	//___________________________________________________________________
	48	AliHFEpidTPC::AliHFEpidTPC() :
	49	// add a list here
	50	AliHFEpidBase()
3a72645a	51	, fLineCrossingsEnabled(0)
	52	, fUpperSigmaCut(NULL)
	53	, fLowerSigmaCut(NULL)
bf892a6a	54	, fElectronMeanCorrection(NULL)
3a72645a	55	, fNsigmaTPC(3)
	56	, fRejectionEnabled(0)
	57	, fPID(NULL)
	58	{
	59	//
	60	// default constructor
	61	//
bf892a6a	62	memset(fRejection, 0, sizeof(Float_t) * 4 * AliPID::kSPECIES);
	63	memset(fLineCrossingSigma, 0, sizeof(Double_t) * AliPID::kSPECIES);
	64	memset(fPAsigCut, 0, sizeof(Float_t) * 2);
	65	memset(fNAsigmaTPC, 0, sizeof(Float_t) * 2);
	66
3a72645a	67	}
3a72645a	68
809a4336	69	//___________________________________________________________________
	70	AliHFEpidTPC::AliHFEpidTPC(const char* name) :
	71	// add a list here
9bcfd1ab	72	AliHFEpidBase(name)
809a4336	73	, fLineCrossingsEnabled(0)
faee3b18	74	, fUpperSigmaCut(NULL)
faee3b18	75	, fLowerSigmaCut(NULL)
bf892a6a	76	, fElectronMeanCorrection(NULL)
75d81601	77	, fNsigmaTPC(3)
0792aa82	78	, fRejectionEnabled(0)
75d81601	79	, fPID(NULL)
809a4336	80	{
	81	//
	82	// default constructor
	83	//
bf892a6a	84	//
bf892a6a	85	memset(fRejection, 0, sizeof(Float_t) * 4 * AliPID::kSPECIES);
809a4336	86	memset(fLineCrossingSigma, 0, sizeof(Double_t) * AliPID::kSPECIES);
722347d8	87	memset(fPAsigCut, 0, sizeof(Float_t) * 2);
722347d8	88	memset(fNAsigmaTPC, 0, sizeof(Float_t) * 2);
809a4336	89	fPID = new AliPID;
809a4336	90	}
	91
	92	//___________________________________________________________________
	93	AliHFEpidTPC::AliHFEpidTPC(const AliHFEpidTPC &ref) :
9bcfd1ab	94	AliHFEpidBase("")
809a4336	95	, fLineCrossingsEnabled(0)
faee3b18	96	, fUpperSigmaCut(NULL)
faee3b18	97	, fLowerSigmaCut(NULL)
bf892a6a	98	, fElectronMeanCorrection(NULL)
809a4336	99	, fNsigmaTPC(2)
0792aa82	100	, fRejectionEnabled(0)
75d81601	101	, fPID(NULL)
809a4336	102	{
	103	//
	104	// Copy constructor
	105	//
	106	ref.Copy(*this);
	107	}
	108
	109	//___________________________________________________________________
	110	AliHFEpidTPC &AliHFEpidTPC::operator=(const AliHFEpidTPC &ref){
	111	//
	112	// Assignment operator
	113	//
	114	if(this != &ref){
	115	ref.Copy(*this);
	116	}
	117	return *this;
	118	}
75d81601	119	//___________________________________________________________________
809a4336	120	void AliHFEpidTPC::Copy(TObject &o) const{
	121	//
	122	// Copy function
	123	// called in copy constructor and assigment operator
	124	//
	125	AliHFEpidTPC &target = dynamic_cast<AliHFEpidTPC &>(o);
	126
	127	target.fLineCrossingsEnabled = fLineCrossingsEnabled;
faee3b18	128	target.fUpperSigmaCut = fUpperSigmaCut;
faee3b18	129	target.fLowerSigmaCut = fLowerSigmaCut;
bf892a6a	130	target.fElectronMeanCorrection = fElectronMeanCorrection;
809a4336	131	target.fNsigmaTPC = fNsigmaTPC;
0792aa82	132	target.fRejectionEnabled = fRejectionEnabled;
809a4336	133	target.fPID = new AliPID(*fPID);
75d81601	134	memcpy(target.fLineCrossingSigma, fLineCrossingSigma, sizeof(Double_t) * AliPID::kSPECIES);
722347d8	135	memcpy(target.fPAsigCut, fPAsigCut, sizeof(Float_t) * 2);
	136	memcpy(target.fNAsigmaTPC, fNAsigmaTPC, sizeof(Float_t) * 2);
	137
809a4336	138	AliHFEpidBase::Copy(target);
	139	}
	140
	141	//___________________________________________________________________
	142	AliHFEpidTPC::~AliHFEpidTPC(){
	143	//
	144	// Destructor
	145	//
	146	if(fPID) delete fPID;
809a4336	147	}
	148
	149	//___________________________________________________________________
	150	Bool_t AliHFEpidTPC::InitializePID(){
	151	//
	152	// Add TPC dE/dx Line crossings
	153	//
75d81601	154	//AddTPCdEdxLineCrossing(AliPID::kKaon, 0.3, 0.018);
75d81601	155	//AddTPCdEdxLineCrossing(AliPID::kProton, 0.9, 0.054);
809a4336	156	return kTRUE;
	157	}
	158
	159	//___________________________________________________________________
6555e2ad	160	Int_t AliHFEpidTPC::IsSelected(const AliHFEpidObject track, AliHFEpidQAmanager pidqa) const
809a4336	161	{
	162	//
	163	// For the TPC pid we use the 2-sigma band around the bethe bloch curve
	164	// for electrons
	165	// exclusion of the crossing points
	166	//
3a72645a	167
	168	if((!fESDpid && track->IsESDanalysis()) \|\| (!fAODpid && track->IsAODanalysis())) return 0;
	169
	170	// QA before selection
	171	if(pidqa) pidqa->ProcessTrack(track, AliHFEpid::kTPCpid, AliHFEdetPIDqa::kBeforePID);
e3fc062d	172	AliDebug(1, "Doing TPC PID based on n-Sigma cut approach");
3a72645a	173	AliHFEpidObject::AnalysisType_t anatype = track->IsESDanalysis() ? AliHFEpidObject::kESDanalysis : AliHFEpidObject::kAODanalysis;
	174	Float_t nsigma = NumberOfSigmas(track->GetRecTrack(), AliPID::kElectron, anatype);
	175	AliDebug(1, Form("TPC NSigma: %f", nsigma));
809a4336	176	// exclude crossing points:
809a4336	177	// Determine the bethe values for each particle species
809a4336	178	Bool_t isLineCrossing = kFALSE;
809a4336	179	for(Int_t ispecies = 0; ispecies < AliPID::kSPECIES; ispecies++){
75d81601	180	if(ispecies == AliPID::kElectron) continue;
809a4336	181	if(!(fLineCrossingsEnabled & 1 << ispecies)) continue;
3a72645a	182	if(TMath::Abs(NumberOfSigmas(track->GetRecTrack(), (AliPID::EParticleType)ispecies, anatype)) < fLineCrossingSigma[ispecies] && TMath::Abs(nsigma) < fNsigmaTPC){
9bcfd1ab	183	// Point in a line crossing region, no PID possible, but !PID still possible ;-)
70da6c5a	184	isLineCrossing = kTRUE;
809a4336	185	break;
	186	}
	187	}
	188	if(isLineCrossing) return 0;
0792aa82	189
	190	// Check particle rejection
	191	if(HasParticleRejection()){
3a72645a	192	Int_t reject = Reject(track->GetRecTrack(), anatype);
0792aa82	193	if(reject != 0) return reject;
0792aa82	194	}
722347d8	195
faee3b18	196	// Check if we have an asymmetric sigma model set
0792aa82	197	Int_t pdg = 0;
faee3b18	198	if(fUpperSigmaCut \|\| fLowerSigmaCut){
3a72645a	199	pdg = CutSigmaModel(track->GetRecTrack(), anatype) ? 11 : 0;
faee3b18	200	} else {
	201	// Perform Asymmetric n-sigma cut if required, else perform symmetric TPC sigma cut
	202	Float_t p = 0.;
3a72645a	203	if(HasAsymmetricSigmaCut() && (p = track->GetRecTrack()->P()) >= fPAsigCut[0] && p <= fPAsigCut[1]){
faee3b18	204	if(nsigma >= fNAsigmaTPC[0] && nsigma <= fNAsigmaTPC[1]) pdg = 11;
	205	} else {
	206	if(TMath::Abs(nsigma) < fNsigmaTPC ) pdg = 11;
	207	}
70da6c5a	208	}
3a72645a	209	if(pidqa && pdg != 0) pidqa->ProcessTrack(track, AliHFEpid::kTPCpid, AliHFEdetPIDqa::kAfterPID);
0792aa82	210	return pdg;
722347d8	211
809a4336	212	}
809a4336	213
faee3b18	214	//___________________________________________________________________
6555e2ad	215	Bool_t AliHFEpidTPC::CutSigmaModel(const AliVParticle *track, AliHFEpidObject::AnalysisType_t anaType) const {
faee3b18	216	//
	217	// N SigmaCut using parametrization of the cuts
	218	//
	219	Bool_t isSelected = kTRUE;
3a72645a	220	Float_t nsigma = NumberOfSigmas(track, AliPID::kElectron, anaType);
6555e2ad	221	Double_t p = GetP(track, anaType);
faee3b18	222	if(fUpperSigmaCut && nsigma > fUpperSigmaCut->Eval(p)) isSelected = kFALSE;
	223	if(fLowerSigmaCut && nsigma < fLowerSigmaCut->Eval(p)) isSelected = kFALSE;
	224	return isSelected;
	225	}
	226
0792aa82	227	//___________________________________________________________________
6555e2ad	228	Int_t AliHFEpidTPC::Reject(const AliVParticle *track, AliHFEpidObject::AnalysisType_t anaType) const{
0792aa82	229	//
	230	// reject particles based on asymmetric sigma cut
	231	//
	232	Int_t pdc[AliPID::kSPECIES] = {11,13,211,321,2212};
6555e2ad	233	Double_t p = GetP(track, anaType);
0792aa82	234	for(Int_t ispec = 0; ispec < AliPID::kSPECIES; ispec++){
0792aa82	235	if(!TESTBIT(fRejectionEnabled, ispec)) continue;
0792aa82	236	// Particle rejection enabled
0792aa82	237	if(p < fRejection[4ispec] \|\| p > fRejection[4ispec+2]) continue;
3a72645a	238	Double_t sigma = NumberOfSigmas(track, static_cast<AliPID::EParticleType>(ispec), anaType);
0792aa82	239	if(sigma >= fRejection[4ispec+1] && sigma <= fRejection[4ispec+3]) return pdc[ispec] * track->Charge();
	240	}
	241	return 0;
	242	}
	243
809a4336	244	//___________________________________________________________________
75d81601	245	void AliHFEpidTPC::AddTPCdEdxLineCrossing(Int_t species, Double_t sigma){
809a4336	246	//
	247	// Add exclusion point for the TPC PID where a dEdx line crosses the electron line
	248	// Stores line center and line sigma
	249	//
	250	if(species >= AliPID::kSPECIES){
	251	AliError("Species doesn't exist");
	252	return;
	253	}
	254	fLineCrossingsEnabled \|= 1 << species;
75d81601	255	fLineCrossingSigma[species] = sigma;
809a4336	256	}
	257
	258	//___________________________________________________________________
6555e2ad	259	Double_t AliHFEpidTPC::NumberOfSigmas(const AliVParticle *track, AliPID::EParticleType species, AliHFEpidObject::AnalysisType_t anaType) const {
3a72645a	260	//
3a72645a	261	// Get the number of sigmas
809a4336	262	//
3a72645a	263	Double_t nSigmas = 100;
	264	if(anaType == AliHFEpidObject::kESDanalysis){
	265	// ESD analysis
	266	const AliESDtrack esdtrack = dynamic_cast<const AliESDtrack >(track);
	267	if(esdtrack && fESDpid) nSigmas = fESDpid->NumberOfSigmasTPC(esdtrack, species);
	268	} else {
	269	const AliAODTrack aodtrack = dynamic_cast<const AliAODTrack >(track);
	270	if(aodtrack && fAODpid) nSigmas = fAODpid->NumberOfSigmasTPC(aodtrack, species);
809a4336	271	}
bf892a6a	272	// Correct for the mean o
	273	if(fElectronMeanCorrection)
	274	nSigmas -= fElectronMeanCorrection->Eval(GetP(track, anaType));
3a72645a	275	return nSigmas;
809a4336	276	}
6555e2ad	277
	278	//___________________________________________________________________
	279	Double_t AliHFEpidTPC::GetP(const AliVParticle *track, AliHFEpidObject::AnalysisType_t anatype) const {
	280	//
	281	// Get the momentum at the inner wall of the TPC
	282	//
	283	Double_t p = -1;
	284	if(anatype == AliHFEpidObject::kESDanalysis){
	285	// ESD analysis: Use Inner Params for the momentum estimate
	286	const AliESDtrack esdtrack = dynamic_cast<const AliESDtrack >(track);
bf892a6a	287	if(esdtrack) p = esdtrack->GetInnerParam() ? esdtrack->GetInnerParam()->GetP() : esdtrack->P();
6555e2ad	288	} else {
	289	// AOD analysis: Use TPC momentum stored in the AliAODpid object
	290	const AliAODTrack aodtrack = dynamic_cast<const AliAODTrack >(track);
bf892a6a	291	if(aodtrack) p = aodtrack->GetDetPid() ? aodtrack->GetDetPid()->GetTPCmomentum() : aodtrack->P();
6555e2ad	292	}
	293	return p;
	294	}