When and what dE/dx prediction for P10 has to be used
Now we have five different dE/dx (GeV/cm) predictions for P10:
-
static method BetheBloch::Girrf in StarClassLibrary is GEANT3 calculation for dE/dx,
to be used for Simulation only
Double_t dEdx = 1e-6*BetheBloch::Girrf (p/m);
-
BetheBloch class in StarClassLibrary which is the Year 0 parameterization of data,
to be used for production P00hm only
BetheBloch m_BetheBloch; Double_t dEdx = m_BetheBloch(p/m);
-
static method BetheBloch::Sirrf in StarClassLibrary
which is the Year 1 parameterization of data,
to be used for productions after P00hm and before P03h
Double_t dEdx = 1e-6*BetheBloch::Sirrf (p/m);
-
Bichsel class in StBichsel library which is Hans Bichsel model prediction to be used
for all productions starting with P03h and after
Bichsel *m_Bichsel = new Bichsel(); Double_t dEdx = 1e-6*m_Bichsel->GetI70(TMath::Log10(p/m))
-
Hans Bichsel model prediction corrected for STAR TPC saturation effect to be used
for all productions starting with P05id and after
Bichsel *m_Bichsel = new Bichsel(); Double_t dEdx = 1e-6*m_Bichsel->GetI70M(TMath::Log10(p/m))
This prediction differs from previous one only for βγ < 0.4.
See plots obtained with $STAR/StRoot/macros/analysis/bichselP.C.
Yuri Fisyak
Last modified: Mon Aug 29 12:31:30 EDT 2005