#include <TMath.h>
#include <TParticle.h>
+#include <TDatabasePDG.h>
#include "AliESDVertex.h"
#include "AliESDtrack.h"
+#include "AliESDEvent.h"
#include "AliKalmanTrack.h"
#include "AliVTrack.h"
#include "AliLog.h"
fIp(0),
fTPCInner(0),
fOp(0),
+ fHMPIDp(0),
fFriendTrack(new AliESDfriendTrack()),
fTPCClusterMap(159),//number of padrows
fTPCSharedMap(159),//number of padrows
fTRDchi2(0),
fTOFchi2(0),
fHMPIDchi2(0),
+ fGlobalChi2(0),
fITSsignal(0),
fTPCsignal(0),
fTPCsignalS(0),
fTOFsignalToT(0),
fTOFsignalRaw(0),
fTOFsignalDz(0),
+ fTOFsignalDx(0),
fHMPIDtrkX(0),
fHMPIDtrkY(0),
fHMPIDmipX(0),
fITSClusterMap(0),
fTRDncls(0),
fTRDncls0(0),
- fTRDpidQuality(0),
+ fTRDntracklets(0),
fTRDnSlices(0),
- fTRDslices(0x0)
-
+ fTRDslices(0x0),
+ fVertexID(-2),// -2 means an orphan track
+ fESDEvent(0)
{
//
// The default ESD constructor
for (i=0;i<kTRDnPlanes;i++) {
fTRDTimBin[i]=0;
}
+ for (i=0;i<4;i++) {fITSdEdxSamples[i]=0.;}
for (i=0;i<4;i++) {fTPCPoints[i]=0;}
for (i=0;i<3;i++) {fTOFLabel[i]=0;}
for (i=0;i<10;i++) {fTOFInfo[i]=0;}
fIp(0),
fTPCInner(0),
fOp(0),
+ fHMPIDp(0),
fFriendTrack(0),
fTPCClusterMap(track.fTPCClusterMap),
fTPCSharedMap(track.fTPCSharedMap),
fTRDchi2(track.fTRDchi2),
fTOFchi2(track.fTOFchi2),
fHMPIDchi2(track.fHMPIDchi2),
+ fGlobalChi2(track.fGlobalChi2),
fITSsignal(track.fITSsignal),
fTPCsignal(track.fTPCsignal),
fTPCsignalS(track.fTPCsignalS),
fTOFsignalToT(track.fTOFsignalToT),
fTOFsignalRaw(track.fTOFsignalRaw),
fTOFsignalDz(track.fTOFsignalDz),
+ fTOFsignalDx(track.fTOFsignalDx),
fHMPIDtrkX(track.fHMPIDtrkX),
fHMPIDtrkY(track.fHMPIDtrkY),
fHMPIDmipX(track.fHMPIDmipX),
fITSClusterMap(track.fITSClusterMap),
fTRDncls(track.fTRDncls),
fTRDncls0(track.fTRDncls0),
- fTRDpidQuality(track.fTRDpidQuality),
+ fTRDntracklets(track.fTRDntracklets),
fTRDnSlices(track.fTRDnSlices),
- fTRDslices(0x0)
+ fTRDslices(0x0),
+ fVertexID(track.fVertexID),
+ fESDEvent(track.fESDEvent)
{
//
//copy constructor
for (Int_t i=0;i<AliPID::kSPECIES;i++) fITSr[i]=track.fITSr[i];
//
for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=track.fTPCr[i];
+ for (Int_t i=0;i<4;i++) {fITSdEdxSamples[i]=track.fITSdEdxSamples[i];}
for (Int_t i=0;i<4;i++) {fTPCPoints[i]=track.fTPCPoints[i];}
for (Int_t i=0; i<3;i++) { fKinkIndexes[i]=track.fKinkIndexes[i];}
for (Int_t i=0; i<3;i++) { fV0Indexes[i]=track.fV0Indexes[i];}
if (track.fIp) fIp=new AliExternalTrackParam(*track.fIp);
if (track.fTPCInner) fTPCInner=new AliExternalTrackParam(*track.fTPCInner);
if (track.fOp) fOp=new AliExternalTrackParam(*track.fOp);
-
+ if (track.fHMPIDp) fHMPIDp=new AliExternalTrackParam(*track.fHMPIDp);
+
if (track.fFriendTrack) fFriendTrack=new AliESDfriendTrack(*(track.fFriendTrack));
}
fIp(0),
fTPCInner(0),
fOp(0),
+ fHMPIDp(0),
fFriendTrack(0),
fTPCClusterMap(159),//number of padrows
fTPCSharedMap(159),//number of padrows
fTRDchi2(0),
fTOFchi2(0),
fHMPIDchi2(0),
+ fGlobalChi2(0),
fITSsignal(0),
fTPCsignal(0),
fTPCsignalS(0),
fTOFsignalToT(0),
fTOFsignalRaw(0),
fTOFsignalDz(0),
+ fTOFsignalDx(0),
fHMPIDtrkX(0),
fHMPIDtrkY(0),
fHMPIDmipX(0),
fITSClusterMap(0),
fTRDncls(0),
fTRDncls0(0),
- fTRDpidQuality(0),
+ fTRDntracklets(0),
fTRDnSlices(0),
- fTRDslices(0x0)
+ fTRDslices(0x0),
+ fVertexID(-2), // -2 means an orphan track
+ fESDEvent(0)
{
//
// ESD track from AliVTrack.
for (i=0;i<kTRDnPlanes;i++) {
fTRDTimBin[i]=0;
}
+ for (i=0;i<4;i++) {fITSdEdxSamples[i]=0.;}
for (i=0;i<4;i++) {fTPCPoints[i]=0;}
for (i=0;i<3;i++) {fTOFLabel[i]=0;}
for (i=0;i<10;i++) {fTOFInfo[i]=0;}
fIp(0),
fTPCInner(0),
fOp(0),
+ fHMPIDp(0),
fFriendTrack(0),
fTPCClusterMap(159),//number of padrows
fTPCSharedMap(159),//number of padrows
fTRDchi2(0),
fTOFchi2(0),
fHMPIDchi2(0),
+ fGlobalChi2(0),
fITSsignal(0),
fTPCsignal(0),
fTPCsignalS(0),
fTOFsignalToT(0),
fTOFsignalRaw(0),
fTOFsignalDz(0),
+ fTOFsignalDx(0),
fHMPIDtrkX(0),
fHMPIDtrkY(0),
fHMPIDmipX(0),
fITSClusterMap(0),
fTRDncls(0),
fTRDncls0(0),
- fTRDpidQuality(0),
+ fTRDntracklets(0),
fTRDnSlices(0),
- fTRDslices(0x0)
+ fTRDslices(0x0),
+ fVertexID(-2), // -2 means an orphan track
+ fESDEvent(0)
{
//
// ESD track from TParticle
for (i=0;i<kTRDnPlanes;i++) {
fTRDTimBin[i]=0;
}
+ for (i=0;i<4;i++) {fITSdEdxSamples[i]=0.;}
for (i=0;i<4;i++) {fTPCPoints[i]=0;}
for (i=0;i<3;i++) {fTOFLabel[i]=0;}
for (i=0;i<10;i++) {fTOFInfo[i]=0;}
delete fIp;
delete fTPCInner;
delete fOp;
+ delete fHMPIDp;
delete fCp;
delete fFriendTrack;
if(fTRDnSlices)
fOp = 0;
}
+
+ if(source.fHMPIDp){
+ // we have the trackparam: assign or copy construct
+ if(fHMPIDp) *fHMPIDp = *source.fHMPIDp;
+ else fHMPIDp = new AliExternalTrackParam(*source.fHMPIDp);
+ }
+ else{
+ // no track param delete the old one
+ if(fHMPIDp)delete fHMPIDp;
+ fHMPIDp = 0;
+ }
+
+
// copy also the friend track
// use copy constructor
if(source.fFriendTrack){
fTOFchi2 = source.fTOFchi2;
fHMPIDchi2 = source.fHMPIDchi2;
+ fGlobalChi2 = source.fGlobalChi2;
fITSsignal = source.fITSsignal;
+ for (Int_t i=0;i<4;i++) {fITSdEdxSamples[i]=source.fITSdEdxSamples[i];}
fTPCsignal = source.fTPCsignal;
fTPCsignalS = source.fTPCsignalS;
for(int i = 0; i< 4;++i){
fTOFsignalToT = source.fTOFsignalToT;
fTOFsignalRaw = source.fTOFsignalRaw;
fTOFsignalDz = source.fTOFsignalDz;
+ fTOFsignalDx = source.fTOFsignalDx;
for(int i = 0;i<10;++i){
fTOFInfo[i] = source.fTOFInfo[i];
fITSClusterMap = source.fITSClusterMap;
fTRDncls = source.fTRDncls;
fTRDncls0 = source.fTRDncls0;
- fTRDpidQuality = source.fTRDpidQuality;
+ fTRDntracklets = source.fTRDntracklets;
+ fVertexID = source.fVertexID;
return *this;
}
delete fTPCInner;fTPCInner=0;
// Reset track parameters at the inner wall of the TRD
delete fOp;fOp = 0;
+ // Reset track parameters at the HMPID
+ delete fHMPIDp;fHMPIDp = 0;
// Reset ITS track related information
fITSncls = 0;
fITSClusterMap=0;
fITSsignal = 0;
+ for (Int_t i=0;i<4;i++) fITSdEdxSamples[i] = 0.;
for (Int_t i=0;i<AliPID::kSPECIES;i++) fITSr[i]=0;
fITSLabel = 0;
for (Int_t i=0;i<AliPID::kSPECIES;i++) fTRDr[i] = 0;
fTRDLabel = 0;
fTRDQuality = 0;
- fTRDpidQuality = 0;
+ fTRDntracklets = 0;
if(fTRDnSlices)
delete[] fTRDslices;
fTRDslices=0x0;
fTOFsignalToT = 0;
fTOFsignalRaw = 0;
fTOFsignalDz = 0;
+ fTOFsignalDx = 0;
for (Int_t i=0;i<AliPID::kSPECIES;i++) fTOFr[i] = 0;
for (Int_t i=0;i<3;i++) fTOFLabel[i] = 0;
for (Int_t i=0;i<10;i++) fTOFInfo[i] = 0;
fHMPIDmipY = 0;
fEMCALindex = kEMCALNoMatch;
+ // reset global track chi2
+ fGlobalChi2 = 0;
+
+ fVertexID = -2; // an orphan track
+
delete fFriendTrack; fFriendTrack = 0;
}
//_______________________________________________________________________
}
Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
+ if (flags==kITSout) fFriendTrack->SetITSOut(*t);
+ if (flags==kTPCout) fFriendTrack->SetTPCOut(*t);
+ if (flags==kTRDrefit) fFriendTrack->SetTRDIn(*t);
switch (flags) {
if (!fOp) fOp=new AliExternalTrackParam(*t);
else
fOp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
- }
+ }
break;
case kTPCin: case kTPCrefit:
fTPCsignal=t->GetPIDsignal();
break;
- case kTRDout: case kTRDin: case kTRDrefit:
+ case kTRDin: case kTRDrefit:
+ break;
+ case kTRDout:
index = fFriendTrack->GetTRDindices();
fTRDLabel = t->GetLabel();
fTRDchi2 = t->GetChi2();
break;
case kTRDStop:
break;
+ case kHMPIDout:
+ if (!fHMPIDp) fHMPIDp=new AliExternalTrackParam(*t);
+ else
+ fHMPIDp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
+ break;
default:
AliError("Wrong flag !");
return kFALSE;
fOp=new AliExternalTrackParam(*p);
}
+void
+AliESDtrack::SetOuterHmpParam(const AliExternalTrackParam *p, ULong_t flags) {
+ //
+ // This is a direct setter for the outer track parameters
+ //
+ SetStatus(flags);
+ if (fHMPIDp) delete fHMPIDp;
+ fHMPIDp=new AliExternalTrackParam(*p);
+}
+
Bool_t
AliESDtrack::GetOuterExternalParameters
(Double_t &alpha, Double_t &x, Double_t p[5]) const {
return kTRUE;
}
+Bool_t
+AliESDtrack::GetOuterHmpExternalParameters
+ (Double_t &alpha, Double_t &x, Double_t p[5]) const {
+ //---------------------------------------------------------------------
+ // This function returns external representation of the track parameters
+ // at the inner layer of TRD
+ //---------------------------------------------------------------------
+ if (!fHMPIDp) return kFALSE;
+ alpha=fHMPIDp->GetAlpha();
+ x=fHMPIDp->GetX();
+ for (Int_t i=0; i<5; i++) p[i]=fHMPIDp->GetParameter()[i];
+ return kTRUE;
+}
+
Bool_t
AliESDtrack::GetOuterExternalCovariance(Double_t cov[15]) const {
//---------------------------------------------------------------------
return kTRUE;
}
+Bool_t
+AliESDtrack::GetOuterHmpExternalCovariance(Double_t cov[15]) const {
+ //---------------------------------------------------------------------
+ // This function returns external representation of the cov. matrix
+ // at the inner layer of TRD
+ //---------------------------------------------------------------------
+ if (!fHMPIDp) return kFALSE;
+ for (Int_t i=0; i<15; i++) cov[i]=fHMPIDp->GetCovariance()[i];
+ return kTRUE;
+}
+
Int_t AliESDtrack::GetNcls(Int_t idet) const
{
// Get number of clusters by subdetector index
//_______________________________________________________________________
UChar_t AliESDtrack::GetTRDtracklets(Int_t *idx) const {
- //---------------------------------------------------------------------
- // This function returns indices of the assigned TRD tracklets
- //---------------------------------------------------------------------
- if (idx!=0) {
- Int_t *index=fFriendTrack->GetTRDindices();
- for (Int_t i=0; i<6/*AliESDfriendTrack::kMaxTRDcluster*/; i++) idx[i]=index[i];
+//
+// This function returns the number of TRD tracklets used in tracking
+// and it fills the indices of these tracklets in the array "idx" as they
+// are registered in the TRD track list.
+//
+// Caution :
+// 1. The idx array has to be allocated with a size >= AliESDtrack::kTRDnPlanes
+// 2. The idx array store not only the index but also the layer of the tracklet.
+// Therefore tracks with TRD gaps contain default values for indices [-1]
+
+ if (!idx) return GetTRDntracklets();
+ Int_t *index=fFriendTrack->GetTRDindices(), n(0);
+ for (Int_t i=0; i<kTRDnPlanes; i++){
+ if(index[i]>=0) n++;
+ idx[i]=index[i];
}
- return fTRDncls;
+ return n;
}
//_______________________________________________________________________
return fTRDr[iSpecies];
}
+//____________________________________________________
+Int_t AliESDtrack::GetNumberOfTRDslices() const
+{
+ // built in backward compatibility
+ Int_t idx = fTRDnSlices - (kTRDnPlanes<<1);
+ return idx<18 ? fTRDnSlices/kTRDnPlanes : idx/kTRDnPlanes;
+}
+
+//____________________________________________________
+Double_t AliESDtrack::GetTRDmomentum(Int_t plane, Double_t *sp) const
+{
+//Returns momentum estimation and optional its error (sp)
+// in TRD layer "plane".
+
+ if (!fTRDnSlices) {
+ AliError("No TRD info allocated for this track !");
+ return -1.;
+ }
+ if ((plane<0) || (plane>=kTRDnPlanes)) {
+ AliError("Info for TRD plane not available!");
+ return -1.;
+ }
+
+ Int_t idx = fTRDnSlices-(kTRDnPlanes<<1)+plane;
+ // Protection for backward compatibility
+ if(idx<(GetNumberOfTRDslices()*kTRDnPlanes)) return -1.;
+
+ if(sp) (*sp) = fTRDslices[idx+kTRDnPlanes];
+ return fTRDslices[idx];
+}
+
+//____________________________________________________
+Double_t AliESDtrack::GetTRDslice(Int_t plane, Int_t slice) const {
+ //Gets the charge from the slice of the plane
+
+ if(!fTRDslices) {
+ //AliError("No TRD slices allocated for this track !");
+ return -1.;
+ }
+ if ((plane<0) || (plane>=kTRDnPlanes)) {
+ AliError("Info for TRD plane not available !");
+ return -1.;
+ }
+ Int_t ns=GetNumberOfTRDslices();
+ if ((slice<-1) || (slice>=ns)) {
+ //AliError("Wrong TRD slice !");
+ return -1.;
+ }
+
+ if(slice>=0) return fTRDslices[plane*ns + slice];
+
+ // return average of the dEdx measurements
+ Double_t q=0.; Double32_t *s = &fTRDslices[plane*ns];
+ for (Int_t i=0; i<ns; i++, s++) if((*s)>0.) q+=(*s);
+ return q/ns;
+}
+
+//____________________________________________________
void AliESDtrack::SetNumberOfTRDslices(Int_t n) {
//Sets the number of slices used for PID
- if (fTRDnSlices != 0) return;
- fTRDnSlices=kTRDnPlanes*n;
+ if (fTRDnSlices) return;
+
+ fTRDnSlices=n;
fTRDslices=new Double32_t[fTRDnSlices];
- for (Int_t i=0; i<fTRDnSlices; i++) fTRDslices[i]=-1.;
+
+ // set-up correctly the allocated memory
+ memset(fTRDslices, 0, n*sizeof(Double32_t));
+ for (Int_t i=GetNumberOfTRDslices(); i--;) fTRDslices[i]=-1.;
}
+//____________________________________________________
void AliESDtrack::SetTRDslice(Double_t q, Int_t plane, Int_t slice) {
//Sets the charge q in the slice of the plane
- Int_t ns=GetNumberOfTRDslices();
- if (ns==0) {
+ if(!fTRDslices) {
AliError("No TRD slices allocated for this track !");
return;
}
-
if ((plane<0) || (plane>=kTRDnPlanes)) {
- AliError("Wrong TRD plane !");
+ AliError("Info for TRD plane not allocated !");
return;
}
+ Int_t ns=GetNumberOfTRDslices();
if ((slice<0) || (slice>=ns)) {
AliError("Wrong TRD slice !");
return;
fTRDslices[n]=q;
}
-Double_t AliESDtrack::GetTRDslice(Int_t plane, Int_t slice) const {
- //Gets the charge from the slice of the plane
- Int_t ns=GetNumberOfTRDslices();
- if (ns==0) {
- //AliError("No TRD slices allocated for this track !");
- return -1.;
- }
- if ((plane<0) || (plane>=kTRDnPlanes)) {
- AliError("Wrong TRD plane !");
- return -1.;
+//____________________________________________________
+void AliESDtrack::SetTRDmomentum(Double_t p, Int_t plane, Double_t *sp)
+{
+ if(!fTRDslices) {
+ AliError("No TRD slices allocated for this track !");
+ return;
}
- if ((slice<-1) || (slice>=ns)) {
- //AliError("Wrong TRD slice !");
- return -1.;
+ if ((plane<0) || (plane>=kTRDnPlanes)) {
+ AliError("Info for TRD plane not allocated !");
+ return;
}
- if (slice==-1) {
- Double_t q=0.;
- for (Int_t i=0; i<ns; i++) q+=fTRDslices[plane*ns + i];
- return q/ns;
- }
+ Int_t idx = fTRDnSlices-(kTRDnPlanes<<1)+plane;
+ // Protection for backward compatibility
+ if(idx<GetNumberOfTRDslices()*kTRDnPlanes) return;
- return fTRDslices[plane*ns + slice];
+ if(sp) fTRDslices[idx+kTRDnPlanes] = (*sp);
+ fTRDslices[idx] = p;
}
return kTRUE;
}
+//_______________________________________________________________________
+Bool_t AliESDtrack::RelateToVertexTPCBxByBz(const AliESDVertex *vtx,
+Double_t b[3], Double_t maxd, AliExternalTrackParam *cParam) {
+ //
+ // Try to relate the TPC-only track parameters to the vertex "vtx",
+ // if the (rough) transverse impact parameter is not bigger then "maxd".
+ //
+ // All three components of the magnetic field ,"b[3]" (kG),
+ // are taken into account.
+ //
+ // a) The TPC-only paramters are extapolated to the DCA to the vertex.
+ // b) The impact parameters and their covariance matrix are calculated.
+ // c) An attempt to constrain the TPC-only params to the vertex is done.
+ // The constrained params are returned via "cParam".
+ //
+ // In the case of success, the returned value is kTRUE
+ // otherwise, it's kFALSE)
+ //
+
+ if (!fTPCInner) return kFALSE;
+ if (!vtx) return kFALSE;
+
+ Double_t dz[2],cov[3];
+ if (!fTPCInner->PropagateToDCABxByBz(vtx, b, maxd, dz, cov)) return kFALSE;
+
+ fdTPC = dz[0];
+ fzTPC = dz[1];
+ fCddTPC = cov[0];
+ fCdzTPC = cov[1];
+ fCzzTPC = cov[2];
+
+ Double_t covar[6]; vtx->GetCovMatrix(covar);
+ Double_t p[2]={GetParameter()[0]-dz[0],GetParameter()[1]-dz[1]};
+ Double_t c[3]={covar[2],0.,covar[5]};
+
+ Double_t chi2=GetPredictedChi2(p,c);
+ if (chi2>kVeryBig) return kFALSE;
+
+ fCchi2TPC=chi2;
+
+ if (!cParam) return kTRUE;
+
+ *cParam = *fTPCInner;
+ if (!cParam->Update(p,c)) return kFALSE;
+
+ return kTRUE;
+}
+
//_______________________________________________________________________
Bool_t AliESDtrack::RelateToVertex(const AliESDVertex *vtx,
Double_t b, Double_t maxd, AliExternalTrackParam *cParam) {
if (!fCp->Update(p,c)) {delete fCp; fCp=0; return kFALSE;}
//----------------------------------------
+ fVertexID = vtx->GetID();
+
+ if (!cParam) return kTRUE;
+
+ *cParam = *this;
+ if (!cParam->Update(p,c)) return kFALSE;
+
+ return kTRUE;
+}
+
+//_______________________________________________________________________
+Bool_t AliESDtrack::RelateToVertexBxByBz(const AliESDVertex *vtx,
+Double_t b[3], Double_t maxd, AliExternalTrackParam *cParam) {
+ //
+ // Try to relate this track to the vertex "vtx",
+ // if the (rough) transverse impact parameter is not bigger then "maxd".
+ // Magnetic field is "b" (kG).
+ //
+ // a) The track gets extapolated to the DCA to the vertex.
+ // b) The impact parameters and their covariance matrix are calculated.
+ // c) An attempt to constrain this track to the vertex is done.
+ // The constrained params are returned via "cParam".
+ //
+ // In the case of success, the returned value is kTRUE
+ // (otherwise, it's kFALSE)
+ //
+
+ if (!vtx) return kFALSE;
+
+ Double_t dz[2],cov[3];
+ if (!PropagateToDCABxByBz(vtx, b, maxd, dz, cov)) return kFALSE;
+
+ fD = dz[0];
+ fZ = dz[1];
+ fCdd = cov[0];
+ fCdz = cov[1];
+ fCzz = cov[2];
+
+ Double_t covar[6]; vtx->GetCovMatrix(covar);
+ Double_t p[2]={GetParameter()[0]-dz[0],GetParameter()[1]-dz[1]};
+ Double_t c[3]={covar[2],0.,covar[5]};
+
+ Double_t chi2=GetPredictedChi2(p,c);
+ if (chi2>kVeryBig) return kFALSE;
+
+ fCchi2=chi2;
+
+
+ //--- Could now these lines be removed ? ---
+ delete fCp;
+ fCp=new AliExternalTrackParam(*this);
+
+ if (!fCp->Update(p,c)) {delete fCp; fCp=0; return kFALSE;}
+ //----------------------------------------
+
+ fVertexID = vtx->GetID();
if (!cParam) return kTRUE;
arrayRef.AddLast(new AliExternalTrackParam(*this));
if (fIp) arrayRef.AddLast(new AliExternalTrackParam(*fIp));
if (fOp) arrayRef.AddLast(new AliExternalTrackParam(*fOp));
+ if (fHMPIDp) arrayRef.AddLast(new AliExternalTrackParam(*fHMPIDp));
//
Double_t mpos[3]={0,0,0};
Int_t entries=arrayRef.GetEntries();
}
}
}
+
+//_______________________________________________________________________
+void AliESDtrack::SetITSdEdxSamples(const Double_t s[4]) {
+ //
+ // Store the dE/dx samples measured by the two SSD and two SDD layers.
+ // These samples are corrected for the track segment length.
+ //
+ for (Int_t i=0; i<4; i++) fITSdEdxSamples[i]=s[i];
+}
+
+//_______________________________________________________________________
+void AliESDtrack::GetITSdEdxSamples(Double_t *s) const {
+ //
+ // Get the dE/dx samples measured by the two SSD and two SDD layers.
+ // These samples are corrected for the track segment length.
+ //
+ for (Int_t i=0; i<4; i++) s[i]=fITSdEdxSamples[i];
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff