"Removed the cut-and-paste code of ALEPH BB formula from all these

[u/mrichter/AliRoot.git] / TPC / AliTPCv4.cxx

diff --git a/TPC/AliTPCv4.cxx b/TPC/AliTPCv4.cxx
index 5049bb9d42f10e6108cd760d3e288f386bb4e6b5..67d6f952e7564827c80ab40b875da7e7b8bdfec4 100644 (file)
--- a/TPC/AliTPCv4.cxx
+++ b/TPC/AliTPCv4.cxx
@@ -41,6 +41,7 @@ TPC version for the krypton runs (Marek)
 #include <TPDGCode.h>
 #include <TString.h>
 #include "AliLog.h"
+#include "AliMathBase.h"
 #include "AliTPCParam.h"
 #include "AliTPCTrackHitsV2.h"
 #include "AliTPCv4.h"
@@ -1391,7 +1392,7 @@ void AliTPCv4::StepManager()
     {
 
       betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3); // protection against too small bg
-      pp=kprim*BetheBloch(betaGamma); 
+      pp=kprim*AliMathBase::BetheBlochAleph(betaGamma); 
    
       if(TMath::Abs(charge) > 1.) pp *= (charge*charge);
     }
@@ -1403,28 +1404,3 @@ void AliTPCv4::StepManager()
   
 }
 
-//_____________________________________________________________________________
-Float_t AliTPCv4::BetheBloch(Float_t bg)
-{
-  //
-  // Bethe-Bloch energy loss formula
-  //
-  const Double_t kp1=0.76176e-1;
-  const Double_t kp2=10.632;
-  const Double_t kp3=0.13279e-4;
-  const Double_t kp4=1.8631;
-  const Double_t kp5=1.9479;
-
-  Double_t dbg = (Double_t) bg;
-
-  Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg);
-
-  Double_t aa = TMath::Power(beta,kp4);
-  Double_t bb = TMath::Power(1./dbg,kp5);
-
-  bb=TMath::Log(kp3+bb);
-  
-  return ((Float_t)((kp2-aa-bb)*kp1/aa));
-}
-
-