PeakSigmaS0HadEarlyHcalBar1.cxx Source File

00001 #include "FastShowerUtils/Samplers/PeakSigmaS0HadEarlyHcalBar1.h"
00002 #include "FastShowerUtils/PolyArgs.h"
00003 
00004 #include <cmath>
00005 namespace FastShower{
00006 
00007   double PeakSigmaS0HadEarlyHcalBar1::value(const PolyArgs& pa) const {
00008 
00009     double energy  = pa.pp()->energy();
00010     double aDelEta = fabs(pa.pp()->delEta());
00011     //
00012     double p1 = 2.638*std::exp(-0.07642*energy) + 0.08491;
00013     double p2 = 188.7*std::exp(-0.2707*energy) + 1.223;
00014     //
00015     return  p1 + p2*aDelEta;
00016   }
00017   //
00018   IFn* PeakSigmaS0HadEarlyHcalBar1::clone() const {
00019     return new PeakSigmaS0HadEarlyHcalBar1();
00020   }
00021 }//namespace
00022 
00023