/usr/include/ThePEG/Cuts/TwoCutBase.h is in libthepeg-dev 1.8.0-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 | // -*- C++ -*-
//
// TwoCutBase.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 1999-2011 Leif Lonnblad
//
// ThePEG is licenced under version 2 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
#ifndef THEPEG_TwoCutBase_H
#define THEPEG_TwoCutBase_H
//
// This is the declaration of the TwoCutBase class.
//
#include "ThePEG/Interface/Interfaced.h"
#include "TwoCutBase.fh"
#include "Cuts.fh"
namespace ThePEG {
/**
* This class corresponds to a kinematical cut to be made on a pair of
* particles in a hard sub-process.
*
* There are six main virtual functions to be overridden by concrete
* sub-classes. minsSij(), minTij(), minDeltaR(), minKTClus() and
* minDurham() returns the minimum allowed values of pre defined
* kinematical variable. In addition the passCut() function should
* return true if a pair of particle with a given types and given
* momenta will pass the cuts.
*
* @see \ref TwoCutBaseInterfaces "The interfaces" defined for
* TwoCutBase.
*/
class TwoCutBase: public Interfaced {
public:
/** @name Standard constructors and destructors. */
//@{
/**
* The default constructor.
*/
TwoCutBase() {}
/**
* The destructor.
*/
virtual ~TwoCutBase();
//@}
public:
/** @name Virtual functions to be overridden by sub-classes. */
//@{
/**
* Return the minimum allowed squared invariant mass of two outgoing
* partons of type \a pi and \a pj.
*/
virtual Energy2 minSij(tcPDPtr pi, tcPDPtr pj) const = 0;
/**
* Return the minimum allowed value of the negative of the squared
* invariant mass of an incoming parton of type \a pi and an
* outgoing parton of type \a po.
*/
virtual Energy2 minTij(tcPDPtr pi, tcPDPtr po) const = 0;
/**
* Return the minimum allowed value of \f$\Delta
* R_{ij}=\sqrt{\Delta\eta_{ij}^2+\Delta\phi_{ij}^2}\f$ of two
* outgoing partons of type \a pi and \a pj.
*/
virtual double minDeltaR(tcPDPtr pi, tcPDPtr pj) const = 0;
/**
* Return the minimum allowed value of the longitudinally invariant
* \f$k_\perp\f$-algorithms distance measure. This is defined as
* \f$\min(p_{\perp i}, p_{\perp
* j})\sqrt{\Delta\eta_{ij}^2+\Delta\phi_{ij}^2}\f$ for two outgoing
* partons, or simply \f$p_{\perp i}\f$ or \f$p_{\perp j}\f$ for a
* single outgoing parton. Returns 0 if both partons are incoming. A
* null pointer indicates an incoming parton, hence the type of the
* incoming parton is irrelevant.
*/
virtual Energy minKTClus(tcPDPtr pi, tcPDPtr pj) const = 0;
/**
* Return the minimum allowed value of the Durham
* \f$k_\perp\f$-algorithms distance measure. This is defined as
* \f$2\min(E_j^2, E_j^2)(1-\cos\theta_{ij})/\hat{s}\f$ for two
* outgoing partons.
*/
virtual double minDurham(tcPDPtr pi, tcPDPtr pj) const = 0;
/**
* Return true if a pair of particles with type \a pitype and \a
* pjtype and momenta \a pi and \a pj respectively passes the
* cuts. \a inci and \a inj indicates if the corresponding particles
* are incoming.
*/
virtual bool passCuts(tcCutsPtr parent, tcPDPtr pitype, tcPDPtr pjtype,
LorentzMomentum pi, LorentzMomentum pj,
bool inci = false, bool incj = false) const;
/**
* Return true if the given pair of particles passes the cuts. \a
* inci and \a inj indicates if the corresponding particles are
* incoming.
*/
bool passCuts(tcCutsPtr parent, tcPPtr pi, tcPPtr pj,
bool inci = false, bool incj = false) const;
//@}
/**
* Describe the currently active cuts in the log file.
*/
virtual void describe() const;
public:
/**
* The standard Init function used to initialize the interfaces.
* Called exactly once for each class by the class description system
* before the main function starts or
* when this class is dynamically loaded.
*/
static void Init();
private:
/**
* The static object used to initialize the description of this class.
* Indicates that this is an abstract class with persistent data.
*/
static AbstractNoPIOClassDescription<TwoCutBase> initTwoCutBase;
/**
* The assignment operator is private and must never be called.
* In fact, it should not even be implemented.
*/
TwoCutBase & operator=(const TwoCutBase &);
};
}
#include "ThePEG/Utilities/ClassTraits.h"
namespace ThePEG {
/** @cond TRAITSPECIALIZATIONS */
/** This template specialization informs ThePEG about the
* base classes of TwoCutBase. */
template <>
struct BaseClassTrait<TwoCutBase,1> {
/** Typedef of the first base class of TwoCutBase. */
typedef Interfaced NthBase;
};
/** This template specialization informs ThePEG about the name of
* the TwoCutBase class and the shared object where it is defined. */
template <>
struct ClassTraits<TwoCutBase>
: public ClassTraitsBase<TwoCutBase> {
/** Return a platform-independent class name */
static string className() { return "ThePEG::TwoCutBase"; }
};
/** @endcond */
}
#endif /* THEPEG_TwoCutBase_H */
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