ZLineShape.h

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#ifndef PhysicsTools_Utilities_ZLineShape_h
#define PhysicsTools_Utilities_ZLineShape_h
#include "PhysicsTools/Utilities/interface/BreitWigner.h"
#include "PhysicsTools/Utilities/interface/GammaPropagator.h"
#include "PhysicsTools/Utilities/interface/GammaZInterference.h"
#include "PhysicsTools/Utilities/interface/Parameter.h"
 
namespace funct {
  class ZLineShape {
  public:
    ZLineShape(const Parameter& m, const Parameter& g, const Parameter& Ng, const Parameter& Ni)
        : Ngamma(Ng.ptr()), Nint(Ni.ptr()), bw_(m, g), gp_(), gzi_(m, g) {}
    ZLineShape(std::shared_ptr<double> m,
               std::shared_ptr<double> g,
               std::shared_ptr<double> Ng,
               std::shared_ptr<double> Ni)
        : Ngamma(Ng), Nint(Ni), bw_(m, g), gp_(), gzi_(m, g) {}
    double operator()(double x) const { return (1.0 - *Nint - *Ngamma) * bw_(x) + *Ngamma * gp_(x) + *Nint * gzi_(x); }
    std::shared_ptr<double> Ngamma, Nint;
 
  private:
    BreitWigner bw_;
    GammaPropagator gp_;
    GammaZInterference gzi_;
  };
 
}  // namespace funct
 
#endif