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 // -*- C++ -*-
 #ifndef HERWIG_NMSSMHSFSFVertex_H
 #define HERWIG_NMSSMHSFSFVertex_H
 //
 // This is the declaration of the NMSSMHSFSFVertex class.
 //
 
 #include "ThePEG/Helicity/Vertex/Scalar/SSSVertex.h"
 #include "Herwig/Models/StandardModel/StandardModel.h"
 #include "Herwig/Models/Susy/MixingMatrix.h"
 
 namespace Herwig {
 
 using namespace ThePEG;
 
 /** \ingroup Helicity
  * This class defines the coupling of Higgs bosons to the sfermions
  * in the NMSSM.
  *
  * @see \ref NMSSMHSFSFVertexInterfaces "The interfaces"
  * defined for NMSSMHSFSFVertex.
  */
 class NMSSMHSFSFVertex: public Helicity::SSSVertex {
 
 public:
 
   /**
    * The default constructor.
    */
   NMSSMHSFSFVertex();
 
   /** @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);
   //@}
 
   /**
    * The standard Init function used to initialize the interfaces.
    * Called exactly once for each class by the class description system
    * before the main function starts or
    * when this class is dynamically loaded.
    */
   static void Init();
 
   /**
    * Calculate the couplings. This method is virtual and must be implemented in 
    * classes inheriting from this.
    * @param q2 The scale \f$q^2\f$ for the coupling at the vertex.
    * @param part1 The ParticleData pointer for the first  particle.
    * @param part2 The ParticleData pointer for the second particle.
    * @param part3 The ParticleData pointer for the third  particle.
    */
   virtual void setCoupling(Energy2 q2,tcPDPtr part1,tcPDPtr part2,
                tcPDPtr part3);
 
 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 an
    * EventGenerator to disk.
    */
   virtual void doinit();
   //@}
 
 private:
 
   /**
    * The assignment operator is private and must never be called.
    * In fact, it should not even be implemented.
    */
   NMSSMHSFSFVertex & operator=(const NMSSMHSFSFVertex &) = delete;
 
 private:
 
   /**
    * Return the coupling of the charged higgs to the sfermions
    */
   Complex chargedHiggs(Energy2 q2, long id1, long id2);
 
 private:
   
   /** @name Stored parameters for fast access.*/
   //@{
   /**
    * A pointer to the Standard Model object 
    */
   tcHwSMPtr _theSM;
 
   /**
    * The CP-even higgs mixing matrix
    */
   MixingMatrixPtr _mixS;
 
   /**
    * The CP-odd higgs mixing matrix
    */
   MixingMatrixPtr _mixP;
 
   /**
    * The \f$ \tilde{t}\f$ mixing matrix 
    */
   MixingMatrixPtr _mixTp;
 
   /**
    * The \f$ \tilde{b}\f$ mixing matrix 
    */
   MixingMatrixPtr _mixBt;
 
   /**
    * The \f$ \tilde{\tau}\f$ mixing matrix 
    */
   MixingMatrixPtr _mixTa;
 
   /**
    * The top quark trilinear coupling
    */
   complex<Energy> _triTp;
 
   /**
    * The bottom quark trilinear coupling
    */
   complex<Energy> _triBt;
 
   /**
    * The tau lepton trilinear coupling
    */
   complex<Energy> _triTa;
 
   /**
    * The value of \f$\lambda\f$.
    */
   double _lambda;
   
   /**
    * The value of \f$ \lambda <S> \f$, the 
    * V.E.V of the extra gauge singlet scaled
    * by \f$\lambda\f$
    */
   Energy _lambdaVEV;
 
   /**
    * The value of the V.E.V \f$ v_1 \f$ 
    */
   Energy _v1;
 
   /**
    * The value of the V.E.V \f$ v_2 \f$ 
    */
   Energy _v2;
   
   /**
    * The value of \f$ \sin\theta_W \f$
    */
   double _sw;
 
   /**
    * The value of \f$ \cos\theta_W \f$
    */
   double _cw;
   
   /**
    * The value of \f$ M_W \f$
    */
   Energy _mw;
 
   /**
    * The value of \f$ M_Z \f$
    */
   Energy _mz;
 
   /**
    * The value of \f$ \sin\beta \f$
    */
   double _sb;
 
   /**
    * The value of \f$ \cos\beta \f$
    */
   double _cb;
 
   /**
    * The value of \f$ \tan\beta \f$
    */
   double _tb;
 
   //@}
   
   /** @name Store previously calculated values for speed. */
   //@{
   /**
    * The scale at which the last calculation took place. 
    */
   Energy2 _q2last;
   
   /**
    * The value of the dimensionless coupling \f$g_W\f$ when
    * last calculated.
    */
   double _couplast;
 
   /**
    * The value of mass of the counterpart SM fermion when
    * last calculated.
    */
   pair<Energy, Energy> _masslast;
 
   /**
    * The PDG codes of the particles in the vertex when it was last evaluated
    */
   pair<long, long> _idlast;
   //@}
 };
 }
 
 
 #endif /* HERWIG_NMSSMHSFSFVertex_H */

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