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TailFracS0EmEcalEc1.cxx

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#include "FastShowerUtils/Samplers/TailFracS0EmEcalEc1.h"
#include "FastShowerUtils/PolyArgs.h"
#include <cmath>
namespace FastShower{

  double TailFracS0EmEcalEc1::value(const PolyArgs& pa) const {
    double energy  = pa.pp()->energy();
    double aDelEta = fabs(pa.pp()->delEta());

    double p1 = 0.2927*std::exp(-0.04074*energy) + 0.02186;
    double p2 = -6.151*std::exp(-0.03150*energy) + 1.357;
    //
    return  p1 + p2*aDelEta;
  }
  //
  IFn* TailFracS0EmEcalEc1::clone() const {return new TailFracS0EmEcalEc1();}
}//namespace

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