Models/Sextet/SextetPSSVertex.h

0001 // -*- C++ -*-
0002 #ifndef HERWIG_SextetPSSVertex_H
0003 #define HERWIG_SextetPSSVertex_H
0004 //
0005 // This is the declaration of the SextetPSSVertex class.
0006 //
0007
0008 #include "ThePEG/Helicity/Vertex/Scalar/VSSVertex.h"
0009
0010 namespace Herwig {
0011
0012 using namespace ThePEG;
0013
0014 /**
0015  * Here is the documentation of the SextetPSSVertex class.
0016  *
0017  * @see \ref SextetPSSVertexInterfaces "The interfaces"
0018  * defined for SextetPSSVertex.
0019  */
0020 class SextetPSSVertex: public Helicity::VSSVertex {
0021
0022 public:
0023
0024   /**
0025    * The default constructor.
0026    */
0027   SextetPSSVertex() {
0028     colourStructure(ColourStructure::DELTA);
0029   }
0030
0031  /**
0032    * Calculate the couplings.
0033    * @param q2 The scale \f$q^2\f$ for the coupling at the vertex.
0034    * @param part1 The ParticleData pointer for the first  particle.
0035    * @param part2 The ParticleData pointer for the second particle.
0036    * @param part3 The ParticleData pointer for the third  particle.
0037    */
0038   virtual void setCoupling(Energy2 q2,tcPDPtr part1,
0039                            tcPDPtr part2,tcPDPtr part3);
0040
0041 public:
0042
0043   /**
0044    * The standard Init function used to initialize the interfaces.
0045    * Called exactly once for each class by the class description system
0046    * before the main function starts or
0047    * when this class is dynamically loaded.
0048    */
0049   static void Init();
0050
0051 protected:
0052
0053   /** @name Clone Methods. */
0054   //@{
0055   /**
0056    * Make a simple clone of this object.
0057    * @return a pointer to the new object.
0058    */
0059   virtual IBPtr clone() const;
0060
0061   /** Make a clone of this object, possibly modifying the cloned object
0062    * to make it sane.
0063    * @return a pointer to the new object.
0064    */
0065   virtual IBPtr fullclone() const;
0066   //@}
0067
0068 protected:
0069
0070   /** @name Standard Interfaced functions. */
0071   //@{
0072   /**
0073    * Initialize this object after the setup phase before saving an
0074    * EventGenerator to disk.
0075    * @throws InitException if object could not be initialized properly.
0076    */
0077   virtual void doinit();
0078   //@}
0079
0080 private:
0081
0082   /**
0083    * The assignment operator is private and must never be called.
0084    * In fact, it should not even be implemented.
0085    */
0086   SextetPSSVertex & operator=(const SextetPSSVertex &) = delete;
0087
0088 private:
0089
0090   /**
0091    * Store the value of the coupling when last evaluated
0092    */
0093   Complex coupLast_;
0094
0095   /**
0096    * Store the scale at which coupling was last evaluated
0097    */
0098   Energy2 q2Last_;
0099
0100 };
0101
0102 }
0103
0104 #endif /* HERWIG_SextetPSSVertex_H */