LauRelBreitWignerRes.hh

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// Copyright University of Warwick 2004 - 2014.
// 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_REL_BREIT_WIGNER_RES
#define LAU_REL_BREIT_WIGNER_RES

#include "TString.h"

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


class LauRelBreitWignerRes : public LauAbsResonance {

        public:

                LauRelBreitWignerRes(LauResonanceInfo* resInfo, const Int_t resPairAmpInt, const LauDaughters* daughters);

                virtual ~LauRelBreitWignerRes();

                virtual void initialise();


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


                virtual const std::vector<LauParameter*>& getFloatingParameters();

        protected:

                virtual LauComplex resAmp(Double_t mass, Double_t spinTerm);


                Double_t calcFFactor(Double_t z);


        private:
                LauRelBreitWignerRes(const LauRelBreitWignerRes& rhs);

                LauRelBreitWignerRes& operator=(const LauRelBreitWignerRes& rhs);

                Double_t q0_;
                Double_t p0_;
                Double_t pstar0_;
                Double_t resMass_;
                Double_t resMassSq_;
                Double_t resWidth_;
                Double_t resRadius_;
                Double_t parRadius_;
                Double_t mDaugSum_;
                Double_t mDaugSumSq_;
                Double_t mDaugDiff_;
                Double_t mDaugDiffSq_;
                Double_t mParentSq_;
                Double_t mBachSq_;
                Double_t FR0_;
                Double_t FP0_;

                ClassDef(LauRelBreitWignerRes,0) // Relativistic Breit-Wigner resonance model

};

#endif