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//-*-c++-*-
//-*-DiPhoton.h-*-
// Written by James Monk and Andrew Pilkington
/////////////////////////////////////////////////////////////////////////////
#ifndef DI_PHOTON_HH
#define DI_PHOTON_HH
#include "GeneratorInterface/ExhumeInterface/interface/TwoSpace.h"
namespace Exhume {
class DiPhoton : public TwoSpace {
public:
DiPhoton(const edm::ParameterSet&);
//declare inherited functions
double SubProcess() override;
void LIPS2Amp() override;
void Amp2LIPS() override;
private:
double MatrixElement();
//internal functions
//internal Parameters
double t_; //internal
double PI2, Inv64PI2;
int Nc;
double MatFact;
int Nup;
int Ndown;
};
} // namespace Exhume
#endif
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