EIC code displayed by LXR master/​include/​Herwig/​Decay/​FormFactors/​WSBFormFactor.h	Source navigation Diff markup Identifier search General search
	Version: master test Revert   Change

File indexing completed on 2026-08-06 09:24:00

 // -*- C++ -*-
 //
 // WSBFormFactor.h is a part of Herwig - A multi-purpose Monte Carlo event generator
 // Copyright (C) 2002-2019 The Herwig Collaboration
 //
 // Herwig is licenced under version 3 of the GPL, see COPYING for details.
 // Please respect the MCnet academic guidelines, see GUIDELINES for details.
 //
 #ifndef HERWIG_WSBFormFactor_H
 #define HERWIG_WSBFormFactor_H
 //
 // This is the declaration of the WSBFormFactor class.
 //
 #include "ScalarFormFactor.h"
 
 namespace Herwig {
 using namespace ThePEG;
 
   /** \ingroup Decay
    *
    *  The WSBFormFactor class is the implementation of the form factor
    *  model of Z.Phys. C29, 637 for the semi-leptonic form factors. It includes
    *  form factors for a number of \f$D\f$, \f$B\f$ and \f$D_s\f$ decays. 
    *  In practice the parameters
    *  of the model were taken from Z.Phys. C34, 103 which includes a number of
    *  decay modes which were not considered in the original paper. 
    *
    *  This form factor model is included both to give an alternative for many modes
    *  to the ISGW models and for use in the factorisation approxmation for hadronic
    *  decays.
    * 
    * @see ScalarFormFactor
    * @see ISGWFormFactor
    * @see ISGW2FormFactor
    *
    */
 
 class WSBFormFactor: public ScalarFormFactor {
 
 public:
 
   /**
    * Default constructor
    */
   WSBFormFactor();
 
   /** @name Form-Factors */
   //@{
   /**
    * The form factor for the weak decay of a scalar to a scalar. 
    * @param q2 The scale \f$q^2\f$.
    * @param iloc The location in the form-factor list.
    * @param id0 The PDG code of the incoming meson.
    * @param id1 The PDG code of the outgoing meson.
    * @param m0 The mass of the incoming meson.
    * @param m1 The mass of the outgoing meson.
    * @param f0 The form-factor \f$f_0\f$. 
    * @param fp The form-factor \f$f_+\f$.
    */
   virtual void ScalarScalarFormFactor(Energy2 q2,unsigned int iloc,int id0,int id1,
                       Energy m0,Energy m1,
                       Complex & f0,Complex & fp) const;
 
   /**
    * The form factor for the weak decay of a scalar to a vector.
    * @param q2 The scale \f$q^2\f$.
    * @param iloc The location in the form-factor list.
    * @param id0 The PDG code of the incoming meson.
    * @param id1 The PDG code of the outgoing meson.
    * @param m0 The mass of the incoming meson.
    * @param m1 The mass of the outgoing meson.
    * @param V  The form-factor \f$V\f$
    * @param A0 The form-factor \f$A_0\f$
    * @param A1 The form-factor \f$A_1\f$
    * @param A2 The form-factor \f$A_2\f$
    */
   virtual void ScalarVectorFormFactor(Energy2 q2, unsigned int iloc, int id0, int id1,
                       Energy m0, Energy m1, Complex & V,
                       Complex & A0,Complex & A1,Complex & A2) const;
   //@}
 
   /**
    * Output the setup information for the particle database
    * @param os The stream to output the information to
    * @param header Whether or not to output the information for MySQL
    * @param create Whether or not to add a statement creating the object
    */
   virtual void dataBaseOutput(ofstream & os,bool header,bool create) const;
 
 public:
 
   /** @name Functions used by the persistent I/O system. */
   //@{
   /**
    * Function used to write out object persistently.
    * @param os the persistent output stream written to.
    */
   void persistentOutput(PersistentOStream & os) const;
 
   /**
    * Function used to read in object persistently.
    * @param is the persistent input stream read from.
    * @param version the version number of the object when written.
    */
   void persistentInput(PersistentIStream & is, int version);
   //@}
 
   /**
    * Standard Init function used to initialize the interfaces.
    */
   static void Init();
 
 protected:
 
   /** @name Clone Methods. */
   //@{
   /**
    * Make a simple clone of this object.
    * @return a pointer to the new object.
    */
   virtual IBPtr clone() const {return new_ptr(*this);}
 
   /** Make a clone of this object, possibly modifying the cloned object
    * to make it sane.
    * @return a pointer to the new object.
    */
   virtual IBPtr fullclone() const {return new_ptr(*this);}
   //@}
 
 protected:
 
   /** @name Standard Interfaced functions. */
   //@{
 
   /**
    * Initialize this object after the setup phase before saving and
    * EventGenerator to disk.
    * @throws InitException if object could not be initialized properly.
    */
   virtual void doinit();
   //@}
 
 private:
 
   /**
    * Private and non-existent assignment operator.
    */
   WSBFormFactor & operator=(const WSBFormFactor &) = delete;
 
 private:
 
   /** @name Parameters for the form factors */
   //@{
   /**
    * The form factor at \f$q^2=0\f$ for scalar decays.
    */
   vector<double> _F0;
 
   /**
    * the form factor \f$V\f$ at \f$q^2=0\f$ for vector decays.
    */
   vector<double> _V;
 
   /**
    * the form factor \f$A_0\f$ at \f$q^2=0\f$ for vector decays.
    */
   vector<double> _A0;
 
   /**
    * the form factor \f$A_1\f$ at \f$q^2=0\f$ for vector decays.
    */
   vector<double> _A1;
 
   /**
    * the form factor \f$A_2\f$ at \f$q^2=0\f$ for vector decays.
    */
   vector<double> _A2;
 
   /**
    * Spin-0 mass for the scalar form factors
    */
   vector<Energy> _mS0;
 
   /**
    * Spin-1 mass for the scalar form factors
    */
   vector<Energy> _mS1;
 
   /**
    * Spin-0 mass for the vector form factors
    */
   vector<Energy> _mV0;
 
   /**
    * Spin-1 mass for the vector form factors
    */
   vector<Energy> _mV1;
   //@}
 
   /**
    * The \f$\eta-\eta'\f$ mixing angle 
    */
   double _thetaeta;
 };
 
 }
 
 #endif /* HERWIG_WSBFormFactor_H */

This page was automatically generated by the 2.3.7 LXR engine. The LXR team