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4 * Author: The ALICE Off-line Project. *
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14 **************************************************************************/
16 //-----------------------------------------------------------------
17 // Implementation of the ITS PID class
18 // Very naive one... Should be made better by the detector experts...
19 // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
20 //-----------------------------------------------------------------
24 #include "AliITSpidESD.h"
25 #include "AliESDtrack.h"
27 ClassImp(AliITSpidESD)
30 //______________________________________________________________________
31 AliITSpidESD::AliITSpidESD():TObject(){
35 Double_t AliITSpidESD::Bethe(Double_t bg) {
37 // This is the Bethe-Bloch function normalised to 1 at the minimum
42 bethe=(1.+ bg2)/bg2*(log(5940*bg2) - bg2/(1.+ bg2));
43 else*/ // not 100% clear why...
44 bethe=(1.+ bg2)/bg2*(TMath::Log(3.5*5940*bg) - bg2/(1.+ bg2));