//
// delete tx;
//
-// Note : All quantities are in GeV, GeV/c or GeV/c**2
+// Note : By default all quantities are in GeV, GeV/c or GeV/c**2
+// but the user can indicate the usage of a different scale
+// for the energy-momentum units via the SetEscale() memberfunction.
+// The actual energy-momentum unit scale can be obtained via the
+// GetEscale() memberfunction.
//
//--- Author: Nick van Eijndhoven 10-jul-1997 UU-SAP Utrecht
//- Modified: NvE $Date$ UU-SAP Utrecht
fTrackCopy=0;
fRef=0;
fSelected=0;
+ fEscale=1;
}
///////////////////////////////////////////////////////////////////////////
AliJet::AliJet(Int_t n) : TNamed(),Ali4Vector()
fNtinit=j.fNtinit;
fNtmax=j.fNtmax;
fQ=j.fQ;
+ fEscale=j.fEscale;
fNtrk=j.fNtrk;
fTrackCopy=j.fTrackCopy;
fUserId=j.fUserId;
{
// Reset all variables to 0
// The max. number of tracks is set to the initial value again
+// Note : The scale for the energy/momentum units will not be changed.
fNtrk=0;
fQ=0;
fUserId=0;
fTracks->Add(&t);
}
- (*this)+=(Ali4Vector&)t;
fQ+=t.GetCharge();
+ Ali4Vector p4=(Ali4Vector)t;
+ Float_t tscale=t.GetEscale();
+ if ((tscale/fEscale > 1.1) || (fEscale/tscale > 1.1)) p4=p4*(tscale/fEscale);
+ (*this)+=p4;
+
}
///////////////////////////////////////////////////////////////////////////
void AliJet::Data(TString f,TString u)
if (strlen(title)) cout << " Title : " << GetTitle();
cout << endl;
cout << " Id : " << fUserId << " Invmass : " << GetInvmass() << " Charge : " << fQ
- << " Momentum : " << GetMomentum() << endl;
+ << " Momentum : " << GetMomentum() << " Energy scale : " << fEscale << " GeV" << endl;
ShowTracks(0);
}
}
///////////////////////////////////////////////////////////////////////////
-Double_t AliJet::GetEnergy()
+Double_t AliJet::GetEnergy(Float_t scale)
{
-// Return the total energy of the jet
- return GetScalar();
+// Return the total energy of the jet.
+// By default the energy is returned in the units as it was stored in the jet
+// structure. However, the user can select a different energy unit scale by
+// specification of the scale parameter.
+// The convention is that scale=1 corresponds to GeV, so specification
+// of scale=0.001 will provide the energy in MeV.
+// The error can be obtained by invoking GetResultError() after
+// invokation of GetEnergy().
+ Double_t E=GetScalar();
+ if (E>0)
+ {
+ if (scale>0)
+ {
+ E*=fEscale/scale;
+ fDresult*=fEscale/scale;
+ }
+ return E;
+ }
+ else
+ {
+ return 0;
+ }
}
///////////////////////////////////////////////////////////////////////////
-Double_t AliJet::GetMomentum()
+Double_t AliJet::GetMomentum(Float_t scale)
{
// Return the value of the total jet 3-momentum
+// By default the momentum is returned in the units as it was stored in the jet
+// structure. However, the user can select a different momentum unit scale by
+// specification of the scale parameter.
+// The convention is that scale=1 corresponds to GeV/c, so specification
+// of scale=0.001 will provide the momentum in MeV/c.
// The error can be obtained by invoking GetResultError() after
// invokation of GetMomentum().
+
Double_t norm=fV.GetNorm();
fDresult=fV.GetResultError();
+ if (scale>0)
+ {
+ norm*=fEscale/scale;
+ fDresult*=fEscale/scale;
+ }
return norm;
}
///////////////////////////////////////////////////////////////////////////
-Ali3Vector AliJet::Get3Momentum() const
+Ali3Vector AliJet::Get3Momentum(Float_t scale) const
{
// Return the the total jet 3-momentum
+// By default the components of the 3-momentum are returned in the units
+// as they were stored in the jet structure.
+// However, the user can select a different momentum unit scale for the
+// components by specification of the scale parameter.
+// The convention is that scale=1 corresponds to GeV/c, so specification
+// of scale=0.001 will provide the 3-momentum in MeV/c.
+
Ali3Vector p=Get3Vector();
+ if (scale>0) p*=fEscale/scale;
return p;
}
///////////////////////////////////////////////////////////////////////////
-Double_t AliJet::GetInvmass()
+Double_t AliJet::GetInvmass(Float_t scale)
{
-// Return the invariant mass of the jet
- Double_t m2=Dot(*this);
- if (m2>0)
+// Return the invariant mass of the jet.
+// By default the mass is returned in the units as it was stored in the jet
+// structure. However, the user can select a different mass unit scale by
+// specification of the scale parameter.
+// The convention is that scale=1 corresponds to GeV/c**2, so specification
+// of scale=0.001 will provide the invariant mass in MeV/c**2.
+// The error can be obtained by invoking GetResultError() after
+// invokation of GetInvmass().
+
+ Double_t inv=Dot(*this);
+ Double_t dinv=GetResultError();
+ Double_t dm=0;
+ if (inv >= 0)
{
- return sqrt(m2);
+ Double_t m=sqrt(inv);
+ if (m) dm=dinv/(2.*m);
+ if (scale>0)
+ {
+ m*=fEscale/scale;
+ dm*=fEscale/scale;
+ }
+ fDresult=dm;
+ return m;
}
else
{
+ fDresult=dm;
return 0;
}
}
}
}
///////////////////////////////////////////////////////////////////////////
-Double_t AliJet::GetPt()
+Double_t AliJet::GetPt(Float_t scale)
{
-// Provide trans. momentum value w.r.t. z-axis.
+// Provide the transverse momentum value w.r.t. z-axis.
+// By default the value is returned in the units as it was stored in the jet
+// structure. However, the user can select a different momentum unit scale by
+// specification of the scale parameter.
+// The convention is that scale=1 corresponds to GeV/c, so specification
+// of scale=0.001 will provide the transverse momentum in MeV/c.
// The error on the value can be obtained by GetResultError()
// after invokation of GetPt().
Ali3Vector v;
v=GetVecTrans();
Double_t norm=v.GetNorm();
fDresult=v.GetResultError();
+ if (scale>0)
+ {
+ norm*=fEscale/scale;
+ fDresult*=fEscale/scale;
+ }
return norm;
}
///////////////////////////////////////////////////////////////////////////
-Double_t AliJet::GetPl()
+Double_t AliJet::GetPl(Float_t scale)
{
-// Provide long. momentum value w.r.t. z-axis.
+// Provide the longitudinal momentum value w.r.t. z-axis.
+// By default the value is returned in the units as it was stored in the jet
+// structure. However, the user can select a different momentum unit scale by
+// specification of the scale parameter.
+// The convention is that scale=1 corresponds to GeV/c, so specification
+// of scale=0.001 will provide the longitudinal momentum in MeV/c.
// Note : the returned value can also be negative.
// The error on the value can be obtained by GetResultError()
// after invokation of GetPl().
+
Ali3Vector v;
v=GetVecLong();
Double_t a[3];
v.GetVector(a,"sph");
if (cos(a[1])<0) pl=-pl;
+ if (scale>0)
+ {
+ pl*=fEscale/scale;
+ fDresult*=fEscale/scale;
+ }
return pl;
}
///////////////////////////////////////////////////////////////////////////
-Double_t AliJet::GetEt()
+Double_t AliJet::GetEt(Float_t scale)
{
-// Provide trans. energy value w.r.t. z-axis.
+// Provide transverse energy value w.r.t. z-axis.
+// By default the value is returned in the units as it was stored in the jet
+// structure. However, the user can select a different energy unit scale by
+// specification of the scale parameter.
+// The convention is that scale=1 corresponds to GeV, so specification
+// of scale=0.001 will provide the transverse energy in MeV.
// The error on the value can be obtained by GetResultError()
// after invokation of GetEt().
+
Double_t et=GetScaTrans();
+ if (scale>0)
+ {
+ et*=fEscale/scale;
+ fDresult*=fEscale/scale;
+ }
return et;
}
///////////////////////////////////////////////////////////////////////////
-Double_t AliJet::GetEl()
+Double_t AliJet::GetEl(Float_t scale)
{
-// Provide long. energy value w.r.t. z-axis.
+// Provide longitudinal energy value w.r.t. z-axis.
+// By default the value is returned in the units as it was stored in the jet
+// structure. However, the user can select a different energy unit scale by
+// specification of the scale parameter.
+// The convention is that scale=1 corresponds to GeV, so specification
+// of scale=0.001 will provide the longitudinal energy in MeV.
// Note : the returned value can also be negative.
// The error on the value can be obtained by GetResultError()
// after invokation of GetEl().
+
Double_t el=GetScaLong();
+ if (scale>0)
+ {
+ el*=fEscale/scale;
+ fDresult*=fEscale/scale;
+ }
return el;
}
///////////////////////////////////////////////////////////////////////////
-Double_t AliJet::GetMt()
+Double_t AliJet::GetMt(Float_t scale)
{
// Provide transverse mass value w.r.t. z-axis.
+// By default the value is returned in the units as it was stored in the jet
+// structure. However, the user can select a different energy unit scale by
+// specification of the scale parameter.
+// The convention is that scale=1 corresponds to GeV, so specification
+// of scale=0.001 will provide the transverse mass in MeV.
// The error on the value can be obtained by GetResultError()
// after invokation of GetMt().
Double_t pt=GetPt();
if (mt) dmt2=(pow((pt*dpt),2)+pow((m*dm),2))/(mt*mt);
fDresult=sqrt(dmt2);
+ if (scale>0)
+ {
+ mt*=fEscale/scale;
+ fDresult*=fEscale/scale;
+ }
return mt;
}
///////////////////////////////////////////////////////////////////////////
// 9 ==> Transverse mass of the track
// 10 ==> Track rapidity
// 11 ==> Pseudo-rapidity of the track
+// 12 ==> Charge of the track
+// 13 ==> Probability of the track hypothesis
//
// The default is mode=-1.
//
if (!tracks) tracks=fTracks;
- if (abs(mode)>11 || !tracks) return fSelected;
+ if (!mode || abs(mode)>13 || !tracks) return fSelected;
Int_t ntracks=tracks->GetEntries();
if (!ntracks)
val2=((AliTrack*)fSelected->At(j))->GetNsignals();
break;
case 2:
- val1=tx->GetEnergy();
- val2=((AliTrack*)fSelected->At(j))->GetEnergy();
+ val1=tx->GetEnergy(1);
+ val2=((AliTrack*)fSelected->At(j))->GetEnergy(1);
break;
case 3:
- val1=tx->GetMomentum();
- val2=((AliTrack*)fSelected->At(j))->GetMomentum();
+ val1=tx->GetMomentum(1);
+ val2=((AliTrack*)fSelected->At(j))->GetMomentum(1);
break;
case 4:
- val1=tx->GetMass();
- val2=((AliTrack*)fSelected->At(j))->GetMass();
+ val1=tx->GetMass(1);
+ val2=((AliTrack*)fSelected->At(j))->GetMass(1);
break;
case 5:
- val1=tx->GetPt();
- val2=((AliTrack*)fSelected->At(j))->GetPt();
+ val1=tx->GetPt(1);
+ val2=((AliTrack*)fSelected->At(j))->GetPt(1);
break;
case 6:
- val1=tx->GetPl();
- val2=((AliTrack*)fSelected->At(j))->GetPl();
+ val1=tx->GetPl(1);
+ val2=((AliTrack*)fSelected->At(j))->GetPl(1);
break;
case 7:
- val1=tx->GetEt();
- val2=((AliTrack*)fSelected->At(j))->GetEt();
+ val1=tx->GetEt(1);
+ val2=((AliTrack*)fSelected->At(j))->GetEt(1);
break;
case 8:
- val1=tx->GetEl();
- val2=((AliTrack*)fSelected->At(j))->GetEl();
+ val1=tx->GetEl(1);
+ val2=((AliTrack*)fSelected->At(j))->GetEl(1);
break;
case 9:
- val1=tx->GetMt();
- val2=((AliTrack*)fSelected->At(j))->GetMt();
+ val1=tx->GetMt(1);
+ val2=((AliTrack*)fSelected->At(j))->GetMt(1);
break;
case 10:
val1=tx->GetRapidity();
val1=tx->GetPseudoRapidity();
val2=((AliTrack*)fSelected->At(j))->GetPseudoRapidity();
break;
+ case 12:
+ val1=tx->GetCharge();
+ val2=((AliTrack*)fSelected->At(j))->GetCharge();
+ break;
+ case 13:
+ val1=tx->GetProb();
+ val2=((AliTrack*)fSelected->At(j))->GetProb();
+ break;
}
if (mode<0 && val1 <= val2) continue;
return fSelected;
}
///////////////////////////////////////////////////////////////////////////
-Double_t AliJet::GetDistance(AliPosition* p)
+Double_t AliJet::GetDistance(AliPosition* p,Float_t scale)
{
// Provide distance of the current jet to the position p.
// The error on the result can be obtained as usual by invoking
// GetResultError() afterwards.
//
-// The distance will be provided in the unit scale of the AliPosition p.
+// By default the distance will be provided in the metric unit scale of
+// the AliPosition p.
+// However, the user can select a different metric unit scale by
+// specification of the scale parameter.
+// The convention is that scale=1 corresponds to meter, so specification
+// of scale=0.01 will provide the distance in cm.
// As such it is possible to obtain a correctly computed distance even in case
// the jet parameters have a different unit scale.
// However, it is recommended to work always with one single unit scale.
AliTrack tj;
tj.Set3Momentum(pj);
tj.SetReferencePoint(*rx);
- dist=tj.GetDistance(p);
+ dist=tj.GetDistance(p,scale);
fDresult=tj.GetResultError();
return dist;
}
///////////////////////////////////////////////////////////////////////////
-Double_t AliJet::GetDistance(AliTrack* t)
+Double_t AliJet::GetDistance(AliTrack* t,Float_t scale)
{
// Provide distance of the current jet to the track t.
// The error on the result can be obtained as usual by invoking
// GetResultError() afterwards.
//
-// The distance will be provided in the unit scale of the current jet.
+// By default the distance will be provided in the metric unit scale of
+// the current jet.
+// However, the user can specify a required metric unit scale by specification
+// of the scale parameter.
+// The convention is that scale=1 corresponds to meter, so specification
+// of scale=0.01 will provide the distance in cm.
// As such it is possible to obtain a correctly computed distance even in case
// the jet and track parameters have a different unit scale.
// However, it is recommended to work always with one single unit scale.
AliTrack tj;
tj.Set3Momentum(pj);
tj.SetReferencePoint(*rx);
- dist=tj.GetDistance(t);
+ dist=tj.GetDistance(t,scale);
fDresult=tj.GetResultError();
return dist;
}
///////////////////////////////////////////////////////////////////////////
-Double_t AliJet::GetDistance(AliJet* j)
+Double_t AliJet::GetDistance(AliJet* j,Float_t scale)
{
// Provide distance of the current jet to the jet j.
// The error on the result can be obtained as usual by invoking
// GetResultError() afterwards.
//
-// The distance will be provided in the unit scale of the current jet.
+// By default the distance will be provided in the metric unit scale of
+// the current jet.
+// This implies that the results of j1.GetDistance(j2) and j2.GetDistance(j1)
+// may be numerically different in case j1 and j2 have different metric units.
+// However, the user can specify a required metric unit scale by specification
+// of the scale parameter.
+// The convention is that scale=1 corresponds to meter, so specification
+// of scale=0.01 will provide the distance in cm.
// As such it is possible to obtain a correctly computed distance even in case
-// the jet and track parameters have a different unit scale.
-// This implies that in such cases the results of j1.GetDistance(j2) and
-// j2.GetDistance(j1) will be numerically different.
+// the jet parameters have a different unit scale.
// However, it is recommended to work always with one single unit scale.
//
// Note : In case of incomplete information, a distance value of -1 is
AliTrack tj;
tj.Set3Momentum(pj);
tj.SetReferencePoint(*rx);
- dist=GetDistance(tj);
+ dist=GetDistance(tj,scale);
return dist;
}
///////////////////////////////////////////////////////////////////////////
+Int_t AliJet::GetNsignals() const
+{
+// Provide the number of signals associated to the jet tracks.
+// Note : Multiple occurrences of the same signal are only counted once.
+
+ if (fNtrk<1) return 0;
+
+ TObjArray arr;
+
+ Int_t n=0;
+ AliTrack* tx=0;
+ Int_t exists=0;
+ for (Int_t i=1; i<=fNtrk; i++)
+ {
+ tx=GetTrack(i);
+ for (Int_t j=1; j<=tx->GetNsignals(); j++)
+ {
+ AliSignal* sx=tx->GetSignal(j);
+ if (!sx) continue;
+ exists=0;
+ for (Int_t k=0; k<arr.GetEntries(); k++)
+ {
+ if (sx==(AliSignal*)arr.At(k))
+ {
+ exists=1;
+ break;
+ }
+ }
+ if (!exists) arr.Add(sx);
+ }
+ }
+ n=arr.GetEntries();
+ return n;
+}
+///////////////////////////////////////////////////////////////////////////
+void AliJet::SetEscale(Float_t scale)
+{
+// Indicate the energy/momentum scale as used by the user.
+// The convention is that scale=1 indicates values in units
+// of GeV, GeV/c or GeV/c**2.
+// So, in case one decides to store values in units of MeV, MeV/c or MeV/c**2
+// the scale indicator should be set to scale=0.001.
+//
+// By default scale=1 is set in the constructor.
+
+ if (scale>0)
+ {
+ fEscale=scale;
+ }
+ else
+ {
+ cout << " *AliJet::SetEscale* Invalid scale value : " << scale << endl;
+ }
+}
+///////////////////////////////////////////////////////////////////////////
+Float_t AliJet::GetEscale() const
+{
+// Provide the energy/momentum scale as used by the user.
+// The convention is that scale=1 indicates values in units
+// of GeV, GeV/c or GeV/c**2.
+// So, a value of scale=0.001 indicates that energy/momentum values are
+// stored in units of MeV, MeV/c or MeV/c**2.
+ return fEscale;
+}
+///////////////////////////////////////////////////////////////////////////
TObject* AliJet::Clone(const char* name) const
{
// Make a deep copy of the current object and provide the pointer to the copy.
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff