Models/LH/LHWWWVertex.h

0001 // -*- C++ -*-
0002 #ifndef HERWIG_LHWWWVertex_H
0003 #define HERWIG_LHWWWVertex_H
0004 //
0005 // This is the declaration of the LHWWWVertex class.
0006 //
0007
0008 #include "ThePEG/Helicity/Vertex/Vector/VVVVertex.h"
0009 #include "LHModel.h"
0010
0011 namespace Herwig {
0012 using namespace ThePEG;
0013 using ThePEG::Helicity::Direction;
0014
0015 /**
0016  * The LHWWWVertex class implements the triple boson coupling in the Little
0017  * Higgs model for the electroweak bosons of the Standard Model and the
0018  * additional \f$A_H\f$, \f$Z_H\f$ and \f$W_H^\pm\f$ bosons.
0019  */
0020 class LHWWWVertex: public Helicity::VVVVertex {
0021
0022 public:
0023
0024   /**
0025    * The default constructor.
0026    */
0027   inline LHWWWVertex();
0028
0029   /**
0030    * Calculate the couplings.
0031    * @param q2 The scale \f$q^2\f$ for the coupling at the vertex.
0032    * @param part1 The ParticleData pointer for the first  particle.
0033    * @param part2 The ParticleData pointer for the second particle.
0034    * @param part3 The ParticleData pointer for the third  particle.
0035    * @param d1 The direction for the first  particle.
0036    * @param d2 The direction for the second particle.
0037    * @param d3 The direction for the third  particle.
0038    */
0039   virtual void setCoupling(Energy2 q2,tcPDPtr part1,tcPDPtr part2,tcPDPtr part3);
0040
0041 public:
0042
0043   /** @name Functions used by the persistent I/O system. */
0044   //@{
0045   /**
0046    * Function used to write out object persistently.
0047    * @param os the persistent output stream written to.
0048    */
0049   void persistentOutput(PersistentOStream & os) const;
0050
0051   /**
0052    * Function used to read in object persistently.
0053    * @param is the persistent input stream read from.
0054    * @param version the version number of the object when written.
0055    */
0056   void persistentInput(PersistentIStream & is, int version);
0057   //@}
0058
0059   /**
0060    * The standard Init function used to initialize the interfaces.
0061    * Called exactly once for each class by the class description system
0062    * before the main function starts or
0063    * when this class is dynamically loaded.
0064    */
0065   static void Init();
0066
0067 protected:
0068
0069   /** @name Clone Methods. */
0070   //@{
0071   /**
0072    * Make a simple clone of this object.
0073    * @return a pointer to the new object.
0074    */
0075   virtual IBPtr clone() const {return new_ptr(*this);}
0076
0077   /** Make a clone of this object, possibly modifying the cloned object
0078    * to make it sane.
0079    * @return a pointer to the new object.
0080    */
0081   virtual IBPtr fullclone() const {return new_ptr(*this);}
0082   //@}
0083
0084
0085 protected:
0086
0087   /** @name Standard Interfaced functions. */
0088   //@{
0089   /**
0090    * Initialize this object after the setup phase before saving an
0091    * EventGenerator to disk.
0092    * @throws InitException if object could not be initialized properly.
0093    */
0094   virtual void doinit();
0095   //@}
0096
0097 private:
0098
0099   /**
0100    * The assignment operator is private and must never be called.
0101    * In fact, it should not even be implemented.
0102    */
0103   LHWWWVertex & operator=(const LHWWWVertex &) = delete;
0104
0105 private:
0106
0107   /**
0108    * Storage of the couplings.
0109    */
0110   //@{
0111   /**
0112    *  The correction factors for the different interacting particles
0113    */
0114   vector<double> _corr;
0115
0116   /**
0117    *  The last value of the electroweak coupling calculated.
0118    */
0119   Complex _couplast;
0120
0121   /**
0122    *  The scale \f$q^2\f$ at which the coupling was last evaluated.
0123    */
0124   Energy2 _q2last;
0125   //@}
0126
0127 };
0128
0129 }
0130
0131 #endif /* HERWIG_LHWWWVertex_H */