PeakMeanC0HadEarlyEcalEc1.cxx Source File

00001 #include "FastShowerUtils/Samplers/PeakMeanC0HadEarlyEcalEc1.h"
00002 #include "FastShowerUtils/PolyArgs.h"
00003 
00004 #include <cmath>
00005 namespace FastShower{
00006 
00007   double PeakMeanC0HadEarlyEcalEc1::value(const PolyArgs& pa) const {
00008     
00009     double energy  = pa.pp()->energy();
00010     double aDelPhi = fabs(pa.pp()->delPhi());
00011     //
00012     double p1 = 0.04916 + 0.00001357*energy;
00013     double p2 = 0.01181 - 0.00005180*energy;
00014     double p3 = 0.9538 + 0.0002339*energy;
00015     //
00016     return p3/(1. + std::exp((aDelPhi-p1)/p2));
00017   }
00018   //
00019   IFn* PeakMeanC0HadEarlyEcalEc1::clone() const {
00020     return new PeakMeanC0HadEarlyEcalEc1();
00021   }
00022 }//namespace
00023 
00024