Models/UED/UEDF1F1W0Vertex.h

0001 // -*- C++ -*-
0002 //
0003 // UEDF1F1W0Vertex.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_UEDF1F1W0Vertex_H
0010 #define HERWIG_UEDF1F1W0Vertex_H
0011 //
0012 // This is the declaration of the UEDF1F1W0Vertex class.
0013 //
0014
0015 #include "ThePEG/Helicity/Vertex/Vector/FFVVertex.h"
0016 #include "UEDBase.h"
0017
0018 namespace Herwig {
0019 using namespace ThePEG;
0020
0021 /**
0022  * This class implements the coupling of a pair of level-1
0023  * fermions to the SM $W$ boson.
0024  *
0025  * @see \ref UEDF1F1W0VertexInterfaces "The interfaces"
0026  * defined for UEDF1F1W0Vertex.
0027  */
0028 class UEDF1F1W0Vertex: public FFVVertex {
0029
0030 public:
0031
0032   /**
0033    * The default constructor.
0034    */
0035   UEDF1F1W0Vertex();
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   /** Calculate the coupling
0064    *@param q2 The scale at which to evaluate the coupling
0065    *@param part1 The first interacting particle
0066    *@param part2 The second interacting particle
0067    *@param part3 The third interacting particle
0068    */
0069   virtual void setCoupling(Energy2 q2, tcPDPtr part1, tcPDPtr part2,
0070                tcPDPtr part3);
0071
0072 protected:
0073
0074   /** @name Clone Methods. */
0075   //@{
0076   /**
0077    * Make a simple clone of this object.
0078    * @return a pointer to the new object.
0079    */
0080   virtual IBPtr clone() const {return new_ptr(*this);}
0081
0082   /** Make a clone of this object, possibly modifying the cloned object
0083    * to make it sane.
0084    * @return a pointer to the new object.
0085    */
0086   virtual IBPtr fullclone() const {return new_ptr(*this);}
0087   //@}
0088
0089 protected:
0090
0091   /** @name Standard Interfaced functions. */
0092   //@{
0093   /**
0094    * Initialize this object after the setup phase before saving an
0095    * EventGenerator to disk.
0096    * @throws InitException if object could not be initialized properly.
0097    */
0098   virtual void doinit();
0099   //@}
0100
0101 private:
0102
0103   /**
0104    * The assignment operator is private and must never be called.
0105    * In fact, it should not even be implemented.
0106    */
0107   UEDF1F1W0Vertex & operator=(const UEDF1F1W0Vertex &) = delete;
0108
0109 private:
0110
0111   /**
0112    *  Whether or not to include mixing
0113    */
0114   bool includeMixing_;
0115
0116   /**
0117    * The value of the inverse radius
0118    */
0119   InvEnergy theRadius;
0120
0121   /**
0122    * The scale at which the coupling was last evaluated.
0123    */
0124   Energy2 theQ2Last;
0125
0126   /**
0127    * The value of the coupling when it was last evaluated.
0128    */
0129   Complex theCoupLast;
0130
0131   /**
0132    * The value of the left coupling when it was last evaluated.
0133    */
0134   Complex theLeftLast;
0135
0136   /**
0137    * The PDG code of the first fermion for which the vertex was last evaluated.
0138    */
0139   long thefermALast;
0140
0141   /**
0142    * The PDG code of the second fermion for which the vertex was last evaluated.
0143    */
0144   long thefermBLast;
0145 };
0146 }
0147
0148 #endif /* HERWIG_UEDF1F1W0Vertex_H */