LauNRAmplitude.hh

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// Copyright University of Warwick 2004 - 2013.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

// Authors:
// Thomas Latham
// John Back
// Paul Harrison

#ifndef LAU_NR_AMPLITUDE
#define LAU_NR_AMPLITUDE

#include "TString.h"

#include "LauAbsResonance.hh"
#include "LauComplex.hh"

class LauKinematics;


class LauNRAmplitude : public LauAbsResonance {

        public:

                LauNRAmplitude(TString resName, Double_t resMass, Double_t resWidth,
                                Int_t resSpin, Int_t resCharge, Int_t resPairAmpInt,
                                const LauDaughters* daughters);

                virtual ~LauNRAmplitude();

                virtual void initialise();


                virtual LauComplex amplitude(const LauKinematics* kinematics);


                virtual LauAbsResonance::LauResonanceModel getResonanceModel() const {return LauAbsResonance::NRModel;}

        protected:
                virtual LauComplex resAmp(Double_t mass, Double_t spinTerm);


                virtual Double_t f(Double_t s, Double_t c, Double_t p) const;

        private:
                Double_t d_; 
                Double_t c1_; 
                Double_t c2_; 
                Double_t p1_; 
                Double_t p2_;

                ClassDef(LauNRAmplitude,0) // Non-resonant amplitude model
};

#endif