Models/LHTP/LHTPHHHVertex.h

0001 // -*- C++ -*-
0002 #ifndef Herwig_LHTPHHHVertex_H
0003 #define Herwig_LHTPHHHVertex_H
0004 //
0005 // This is the declaration of the LHTPHHHVertex class.
0006 //
0007
0008 #include "ThePEG/Helicity/Vertex/Scalar/SSSVertex.h"
0009
0010 namespace Herwig {
0011
0012 using namespace ThePEG;
0013   using namespace ThePEG::Helicity;
0014
0015 /**
0016  * The LHTPHHHVertex class implements the triple Higgs boson interactions
0017  * in the Little Higgs model
0018  * with T-parity.
0019  */
0020 class LHTPHHHVertex : public SSSVertex {
0021
0022 public:
0023
0024   /**
0025    * The default constructor.
0026    */
0027   LHTPHHHVertex();
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    */
0036   virtual void setCoupling(Energy2 q2,tcPDPtr part1,tcPDPtr part2,tcPDPtr part3);
0037
0038   /** @name Functions used by the persistent I/O system. */
0039   //@{
0040   /**
0041    * Function used to write out object persistently.
0042    * @param os the persistent output stream written to.
0043    */
0044   void persistentOutput(PersistentOStream & os) const;
0045
0046   /**
0047    * Function used to read in object persistently.
0048    * @param is the persistent input stream read from.
0049    * @param version the version number of the object when written.
0050    */
0051   void persistentInput(PersistentIStream & is, int version);
0052   //@}
0053
0054   /**
0055    * The standard Init function used to initialize the interfaces.
0056    * Called exactly once for each class by the class description system
0057    * before the main function starts or
0058    * when this class is dynamically loaded.
0059    */
0060   static void Init();
0061
0062 protected:
0063
0064   /** @name Clone Methods. */
0065   //@{
0066   /**
0067    * Make a simple clone of this object.
0068    * @return a pointer to the new object.
0069    */
0070   virtual IBPtr clone() const;
0071
0072   /** Make a clone of this object, possibly modifying the cloned object
0073    * to make it sane.
0074    * @return a pointer to the new object.
0075    */
0076   virtual IBPtr fullclone() const;
0077   //@}
0078
0079 protected:
0080
0081   /** @name Standard Interfaced functions. */
0082   //@{
0083   /**
0084    * Initialize this object after the setup phase before saving an
0085    * EventGenerator to disk.
0086    * @throws InitException if object could not be initialized properly.
0087    */
0088   virtual void doinit();
0089   //@}
0090
0091 private:
0092
0093   /**
0094    * The assignment operator is private and must never be called.
0095    * In fact, it should not even be implemented.
0096    */
0097   LHTPHHHVertex & operator=(const LHTPHHHVertex &) = delete;
0098
0099 private:
0100
0101   /**
0102    *  ratio of masses
0103    */
0104   Energy ratio_;
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
0118 }
0119
0120 #endif /* Herwig_LHTPHHHVertex_H */