Models/LH/LHWWWWVertex.h

0001 // -*- C++ -*-
0002 #ifndef HERWIG_LHWWWWVertex_H
0003 #define HERWIG_LHWWWWVertex_H
0004 //
0005 // This is the declaration of the LHWWWWVertex class.
0006 //
0007
0008 #include "ThePEG/Helicity/Vertex/Vector/VVVVVertex.h"
0009
0010 namespace Herwig {
0011
0012 using namespace ThePEG;
0013   using namespace ThePEG::Helicity;
0014
0015 /**
0016  * The LHWWWWVertex class implements the quartic self-couplings of electroweak
0017  * gauge bosons in the Little Higgs model.
0018  */
0019 class LHWWWWVertex: public VVVVVertex {
0020
0021 public:
0022
0023   /**
0024    * The default constructor.
0025    */
0026   LHWWWWVertex();
0027
0028   /** @name Functions used by the persistent I/O system. */
0029   //@{
0030   /**
0031    * Function used to write out object persistently.
0032    * @param os the persistent output stream written to.
0033    */
0034   void persistentOutput(PersistentOStream & os) const;
0035
0036   /**
0037    * Function used to read in object persistently.
0038    * @param is the persistent input stream read from.
0039    * @param version the version number of the object when written.
0040    */
0041   void persistentInput(PersistentIStream & is, int version);
0042   //@}
0043
0044   /**
0045    * The standard Init function used to initialize the interfaces.
0046    * Called exactly once for each class by the class description system
0047    * before the main function starts or
0048    * when this class is dynamically loaded.
0049    */
0050   static void Init();
0051
0052   /**
0053    * Calculate the couplings.
0054    * @param q2 The scale \f$q^2\f$ for the coupling at the vertex.
0055    * @param part1 The ParticleData pointer for the first  particle.
0056    * @param part2 The ParticleData pointer for the second particle.
0057    * @param part3 The ParticleData pointer for the third  particle.
0058    * @param part4 The ParticleData pointer for the fourth particle.
0059    */
0060   virtual void setCoupling(Energy2 q2,tcPDPtr part1,tcPDPtr part2,tcPDPtr part3,
0061                tcPDPtr part4);
0062
0063 protected:
0064
0065   /** @name Clone Methods. */
0066   //@{
0067   /**
0068    * Make a simple clone of this object.
0069    * @return a pointer to the new object.
0070    */
0071   virtual IBPtr clone() const;
0072
0073   /** Make a clone of this object, possibly modifying the cloned object
0074    * to make it sane.
0075    * @return a pointer to the new object.
0076    */
0077   virtual IBPtr fullclone() const;
0078   //@}
0079
0080 protected:
0081
0082   /** @name Standard Interfaced functions. */
0083   //@{
0084   /**
0085    * Initialize this object after the setup phase before saving and
0086    * EventGenerator to disk.
0087    * @throws InitException if object could not be initialized properly.
0088    */
0089   virtual void doinit();
0090   //@}
0091
0092 private:
0093
0094   /**
0095    * The assignment operator is private and must never be called.
0096    * In fact, it should not even be implemented.
0097    */
0098   LHWWWWVertex & operator=(const LHWWWWVertex &) = delete;
0099
0100 private:
0101
0102   /**
0103    * Storage of the couplings.
0104    */
0105   //@{
0106   /**
0107    *  The last value of the electroweak coupling calculated.
0108    */
0109   Complex _couplast;
0110
0111   /**
0112    *  The scale \f$q^2\f$ at which the coupling was last evaluated.
0113    */
0114   Energy2 _q2last;
0115
0116   /**
0117    *  Couplings for the different bosons
0118    */
0119   vector<double> _coup;
0120   //@}
0121
0122 };
0123
0124 }
0125
0126 #endif /* HERWIG_LHWWWWVertex_H */