PDF.hh

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#pragma once
 
#include <array>
#include <cstddef>
#include <memory>
 
#include "HEJ/PDG_codes.hh"
 
namespace LHAPDF {
  class PDF;
}
 
namespace HEJ {
  class PDF {
  public:
    PDF(int id, ParticleID beam1, ParticleID beam2);
 
    PDF(std::string const & name, ParticleID beam1, ParticleID beam2);
 
    double pdfpt(std::size_t beam_idx, double x, double q, ParticleID id) const;
 
    double Halphas(double q) const;
 
 
    bool inRangeQ(double q) const;
 
 
    bool inRangeX(double x) const;
 
    int id() const;
 
    PDF(PDF const & other) = delete; 
    PDF & operator=(PDF const & other) = delete; 
    PDF(PDF && other) noexcept; 
    PDF & operator=(PDF && other) noexcept; 
    ~PDF();
 
  private:
    std::unique_ptr<LHAPDF::PDF> pdf_;
 
    std::array<int, 2> beamtype_{};
  };
} // namespace HEJ