TailFracS0EmEcalBar1.cxx Source File

00001 #include "FastShowerUtils/Samplers/TailFracS0EmEcalBar1.h"
00002 #include "FastShowerUtils/PolyArgs.h"
00003 
00004 #include <cmath>
00005 namespace FastShower{
00006 
00007   double TailFracS0EmEcalBar1::value(const PolyArgs& pa) const {
00008 
00009     double energy  = pa.pp()->energy();
00010     double aDelEta = fabs(pa.pp()->delEta());
00011     //
00012     double p1 = 0.6090*std::exp(-0.2083*energy) + 0.03519;
00013     double p2 = -5.773*std::exp(-0.1092*energy) + 0.007477;
00014     //
00015     return  p1 + p2*aDelEta;
00016   }
00017   //
00018   IFn* TailFracS0EmEcalBar1::clone() const {
00019     return new TailFracS0EmEcalBar1();
00020   }
00021 }//namespace
00022 
00023