LbLFFCalculator.h

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#ifndef LBLFFCALCULATOR_H
#define LBLFFCALCULATOR_H
 
#include "Include.h"
#include "ObsParameterProxy.h"
#include "IFFCalculator.h"
 
enum class LbL_FF {F_PERP, H_PERP, G_PERP, F_PLUS, H_PLUS, G_PLUS, H_TILDE_PERP, H_TILDE_PLUS};
enum class LbL_FF_Src {DM};
 
class LbLFFCalculator : public IFFCalculator<LbL_FF> {
private:
    std::shared_ptr<IObsParameterProxy<ParamId, DataType, std::string, LhaID>> iobspp_sm;
    double m_Lb, m_L;
    double t_p, t_0;
    std::map<LbL_FF, std::array<double, 3>> alpha_ai {};
    std::map<LbL_FF, double> m_R {};
 
    static inline const std::map<LbL_FF_Src, size_t> sse_order {
        {LbL_FF_Src::DM, 2},
    };
 
public:
    LbLFFCalculator(std::shared_ptr<IObsParameterProxy<ParamId, DataType, std::string, LhaID>> iobspp_sm, LbL_FF_Src src=LbL_FF_Src::DM);
 
    complex_t z(double t, double t_p, double t_0);
    double get(LbL_FF a, double q2) override;
 
private:
    void load_FF_params(LbL_FF_Src src);
    double pole(double q2, double m_R);
    double F_a(LbL_FF a, double q2);
 
};
 
#endif // LBLFFCALCULATOR_H