Models/Susy/SSWHHVertex.h

0001 // -*- C++ -*-
0002 //
0003 // SSWHHVertex.h is a part of Herwig - A multi-purpose Monte Carlo event generator
0004 // Copyright (C) 2002-2019 The Herwig Collaboration
0005 //
0006 // Herwig is licenced under version 3 of the GPL, see COPYING for details.
0007 // Please respect the MCnet academic guidelines, see GUIDELINES for details.
0008 //
0009 #ifndef HERWIG_SSWHHVertex_H
0010 #define HERWIG_SSWHHVertex_H
0011 //
0012 // This is the declaration of the SSWHHVertex class.
0013 //
0014
0015 #include "ThePEG/Helicity/Vertex/Scalar/VSSVertex.h"
0016 #include "MSSM.h"
0017
0018 namespace Herwig {
0019 using namespace ThePEG;
0020
0021 /**
0022  * The coupling of a pair of higgs to the SM gauge bosons
0023  * in the MSSM.
0024  *
0025  * @see \ref SSWHHVertexInterfaces "The interfaces"
0026  * defined for SSWHHVertex.
0027  */
0028 class SSWHHVertex: public VSSVertex {
0029
0030 public:
0031
0032   /**
0033    * The default constructor.
0034    */
0035   SSWHHVertex();
0036
0037 public:
0038
0039   /** @name Functions used by the persistent I/O system. */
0040   //@{
0041   /**
0042    * Function used to write out object persistently.
0043    * @param os the persistent output stream written to.
0044    */
0045   void persistentOutput(PersistentOStream & os) const;
0046
0047   /**
0048    * Function used to read in object persistently.
0049    * @param is the persistent input stream read from.
0050    * @param version the version number of the object when written.
0051    */
0052   void persistentInput(PersistentIStream & is, int version);
0053   //@}
0054
0055   /**
0056    * The standard Init function used to initialize the interfaces.
0057    * Called exactly once for each class by the class description system
0058    * before the main function starts or
0059    * when this class is dynamically loaded.
0060    */
0061   static void Init();
0062
0063   /**
0064    * Calculate the coupling for the vertex
0065    * @param q2 The scale to at which evaluate the coupling.
0066    * @param particle1 The first particle in the vertex.
0067    * @param particle2 The second particle in the vertex.
0068    * @param particle3 The third particle in the vertex.
0069    */
0070   virtual void setCoupling(Energy2 q2, tcPDPtr particle1, tcPDPtr particle2,
0071                tcPDPtr particle3);
0072
0073 protected:
0074
0075   /** @name Clone Methods. */
0076   //@{
0077   /**
0078    * Make a simple clone of this object.
0079    * @return a pointer to the new object.
0080    */
0081   virtual IBPtr clone() const {return new_ptr(*this);}
0082
0083   /** Make a clone of this object, possibly modifying the cloned object
0084    * to make it sane.
0085    * @return a pointer to the new object.
0086    */
0087   virtual IBPtr fullclone() const {return new_ptr(*this);}
0088   //@}
0089
0090 protected:
0091
0092   /** @name Standard Interfaced functions. */
0093   //@{
0094   /**
0095    * Initialize this object after the setup phase before saving an
0096    * EventGenerator to disk.
0097    * @throws InitException if object could not be initialized properly.
0098    */
0099   virtual void doinit();
0100   //@}
0101
0102 private:
0103
0104   /**
0105    * The assignment operator is private and must never be called.
0106    * In fact, it should not even be implemented.
0107    */
0108   SSWHHVertex & operator=(const SSWHHVertex &) = delete;
0109
0110 private:
0111
0112   /**
0113    * The value of \f$\sin\theta_W\f$
0114    */
0115   double theSw;
0116
0117   /**
0118    * The value of \f$\sin2\theta_W\f$
0119    */
0120   double theS2w;
0121
0122   /**
0123    * The value of \f$\cos2\theta_W\f$
0124    */
0125   double theC2w;
0126
0127   /**
0128    * The value of \f$\sin(\beta - \alpha)\f$
0129    */
0130   double thesbma;
0131
0132   /**
0133    * The value of \f$\cos(\beta - \alpha)\f$
0134    */
0135   double thecbma;
0136
0137   /**
0138    * The scale at which the coupling  was last evaluated.
0139    */
0140   Energy2 theq2last;
0141
0142   /**
0143    * The value of the \f$\sqrt{4\pi\alpha}\f$  when last evaluated.
0144    */
0145   double theElast;
0146
0147 };
0148
0149 }
0150
0151 #endif /* HERWIG_SSWHHVertex_H */