PDF.hh

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#pragma once
 
#include <array>
#include <memory>
 
#include "LHAPDF/LHAPDF.h"
 
#include "HEJ/PDG_codes.hh"
 
namespace HEJ{
  class PDF {
  public:
    PDF(int id, ParticleID beam1, ParticleID beam2);
 
    double pdfpt(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;
 
#if defined LHAPDF_MAJOR_VERSION && LHAPDF_MAJOR_VERSION == 6
    int id() const;
#endif
 
  private:
 
#if defined LHAPDF_MAJOR_VERSION && LHAPDF_MAJOR_VERSION == 6
    std::unique_ptr<LHAPDF::PDF> pdf;
#endif
 
    std::array<int, 2> beamtype;
  };
}