Matchbox/Phasespace/FILightInvertedTildeKinematics.h

0001 // -*- C++ -*-
0002 //
0003 // FILightInvertedTildeKinematics.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_FILightInvertedTildeKinematics_H
0010 #define HERWIG_FILightInvertedTildeKinematics_H
0011 //
0012 // This is the declaration of the FILightInvertedTildeKinematics class.
0013 //
0014
0015 #include "Herwig/MatrixElement/Matchbox/Phasespace/InvertedTildeKinematics.h"
0016
0017 namespace Herwig {
0018
0019 using namespace ThePEG;
0020
0021 /**
0022  * \ingroup Matchbox
0023  * \author Simon Platzer
0024  *
0025  * \brief FILightInvertedTildeKinematics inverts the final-final tilde
0026  * kinematics.
0027  *
0028  */
0029 class FILightInvertedTildeKinematics: public Herwig::InvertedTildeKinematics {
0030
0031 public:
0032
0033   /**
0034    * Perform the mapping of the tilde kinematics for the
0035    * last selected process and store all dimensionless
0036    * variables in the subtractionParameters() vector.
0037    * Return false, if the calculation of the real
0038    * kinematics was impossible for the selected configuration
0039    * and true on success.
0040    */
0041   virtual bool doMap(const double *);
0042
0043   /**
0044    * Return the pt associated to the last generated splitting.
0045    */
0046   virtual Energy lastPt() const;
0047
0048   /**
0049    * Return the momentum fraction associated to the last splitting.
0050    */
0051   virtual double lastZ() const;
0052
0053   /**
0054    * Return the upper bound on pt
0055    */
0056   virtual Energy ptMax() const;
0057
0058   /**
0059    * Given a pt, return the boundaries on z
0060    */
0061   virtual pair<double,double> zBounds(Energy pt, Energy hardPt = ZERO) const;
0062
0063 public:
0064
0065   /** @name Functions used by the persistent I/O system. */
0066   //@{
0067   /**
0068    * Function used to write out object persistently.
0069    * @param os the persistent output stream written to.
0070    */
0071   void persistentOutput(PersistentOStream & os) const;
0072
0073   /**
0074    * Function used to read in object persistently.
0075    * @param is the persistent input stream read from.
0076    * @param version the version number of the object when written.
0077    */
0078   void persistentInput(PersistentIStream & is, int version);
0079   //@}
0080
0081   /**
0082    * The standard Init function used to initialize the interfaces.
0083    * Called exactly once for each class by the class description system
0084    * before the main function starts or
0085    * when this class is dynamically loaded.
0086    */
0087   static void Init();
0088
0089 protected:
0090
0091   /** @name Clone Methods. */
0092   //@{
0093   /**
0094    * Make a simple clone of this object.
0095    * @return a pointer to the new object.
0096    */
0097   virtual IBPtr clone() const;
0098
0099   /** Make a clone of this object, possibly modifying the cloned object
0100    * to make it sane.
0101    * @return a pointer to the new object.
0102    */
0103   virtual IBPtr fullclone() const;
0104   //@}
0105
0106
0107 // If needed, insert declarations of virtual function defined in the
0108 // InterfacedBase class here (using ThePEG-interfaced-decl in Emacs).
0109
0110
0111 private:
0112
0113   /**
0114    * The assignment operator is private and must never be called.
0115    * In fact, it should not even be implemented.
0116    */
0117   FILightInvertedTildeKinematics & operator=(const FILightInvertedTildeKinematics &) = delete;
0118
0119 };
0120
0121 }
0122
0123 #endif /* HERWIG_FILightInvertedTildeKinematics_H */