LauRelBreitWignerRes.hh

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/*
Copyright 2004 University of Warwick
 
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
 
    http://www.apache.org/licenses/LICENSE-2.0
 
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
 
/*
Laura++ package authors:
John Back
Paul Harrison
Thomas Latham
*/
 
#ifndef LAU_REL_BREIT_WIGNER_RES
#define LAU_REL_BREIT_WIGNER_RES
 
#include "LauAbsResonance.hh"
#include "LauComplex.hh"
 
#include "TString.h"
 
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 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_;
 
    ClassDef( LauRelBreitWignerRes, 0 )    // Relativistic Breit-Wigner resonance model
};
 
#endif