Models/UED/UEDF1F1P0Vertex.h

0001 // -*- C++ -*-
0002 //
0003 // UEDF1F1P0Vertex.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_UEDF1F1P0Vertex_H
0010 #define HERWIG_UEDF1F1P0Vertex_H
0011 //
0012 // This is the declaration of the UEDF1F1P0Vertex 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 KK
0023  * fermions to a standard Model photon.
0024  *
0025  * @see \ref UEDF1F1P0VertexInterfaces "The interfaces"
0026  * defined for UEDF1F1P0Vertex.
0027  */
0028 class UEDF1F1P0Vertex: public FFVVertex {
0029
0030 public:
0031
0032   /**
0033    * The default constructor.
0034    */
0035   UEDF1F1P0Vertex();
0036
0037   /** Calculate the coupling
0038    *@param q2 The scale at which to evaluate the coupling
0039    *@param part1 The first interacting particle
0040    *@param part2 The second interacting particle
0041    *@param part3 The third interacting particle
0042    */
0043   virtual void setCoupling(Energy2 q2, tcPDPtr part1, tcPDPtr part2,
0044                tcPDPtr part3);
0045
0046   /** @name Functions used by the persistent I/O system. */
0047   //@{
0048   /**
0049    * Function used to write out object persistently.
0050    * @param os the persistent output stream written to.
0051    */
0052   void persistentOutput(PersistentOStream & os) const;
0053
0054   /**
0055    * Function used to read in object persistently.
0056    * @param is the persistent input stream read from.
0057    * @param version the version number of the object when written.
0058    */
0059   void persistentInput(PersistentIStream & is, int version);
0060   //@}
0061
0062   /**
0063    * The standard Init function used to initialize the interfaces.
0064    * Called exactly once for each class by the class description system
0065    * before the main function starts or
0066    * when this class is dynamically loaded.
0067    */
0068   static void Init();
0069
0070 protected:
0071
0072   /** @name Clone Methods. */
0073   //@{
0074   /**
0075    * Make a simple clone of this object.
0076    * @return a pointer to the new object.
0077    */
0078   virtual IBPtr clone() const {return new_ptr(*this);}
0079
0080   /** Make a clone of this object, possibly modifying the cloned object
0081    * to make it sane.
0082    * @return a pointer to the new object.
0083    */
0084   virtual IBPtr fullclone() const {return new_ptr(*this);}
0085   //@}
0086
0087
0088 protected:
0089
0090   /** @name Standard Interfaced functions. */
0091   //@{
0092   /**
0093    * Initialize this object after the setup phase before saving an
0094    * EventGenerator to disk.
0095    * @throws InitException if object could not be initialized properly.
0096    */
0097   virtual void doinit();
0098   //@}
0099
0100 private:
0101
0102   /**
0103    * The assignment operator is private and must never be called.
0104    * In fact, it should not even be implemented.
0105    */
0106   UEDF1F1P0Vertex & operator=(const UEDF1F1P0Vertex &) = delete;
0107
0108 private:
0109
0110   /**
0111    * The value of the coupling when it was last evaluated .
0112    */
0113   Complex coupLast_;
0114
0115   /**
0116    * The scale at which the coupling was last evaluated.
0117    */
0118   Energy2 q2Last_;
0119
0120   /**
0121    * The id of the last fermion that the vertex was evaluated for
0122    */
0123   long fermLast_;
0124
0125   /**
0126    * The value of the left/right coupling when it was last evaluated.
0127    */
0128   Complex LRLast_;
0129
0130   /**
0131    * The charges of the fermions
0132    */
0133   vector<double> charges_;
0134 };
0135 }
0136
0137 #endif /* HERWIG_UEDF1F1P0Vertex_H */