PeakSigmaC0EmEcalBar1.cxx Source File

00001 #include "FastShowerUtils/Samplers/PeakSigmaC0EmEcalBar1.h"
00002 #include "FastShowerUtils/PolyArgs.h"
00003 
00004 #include <cmath>
00005 namespace FastShower{
00006 
00007   double PeakSigmaC0EmEcalBar1::value(const PolyArgs& pa) const {
00008 
00009     double aDelPhi = fabs(pa.pp()->delPhi());
00010     //
00011     double p1 = 0.078165;
00012     double p2 = 0.00957575;
00013     double p3 = 0.99685;
00014     //
00015     return 1. - p3/(1.+std::exp((aDelPhi-p1)/p2));
00016   }
00017   //
00018   IFn* PeakSigmaC0EmEcalBar1::clone() const {
00019     return new PeakSigmaC0EmEcalBar1();
00020   }
00021 }//namespace
00022 
00023