/usr/include/ThePEG/Handlers/StdDependentXComb.h is in libthepeg-dev 1.8.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 | // -*- C++ -*-
//
// StdDependentXComb.h is a part of ThePEG - Toolkit for HEP Event Generation
// Copyright (C) 1999-2007 Leif Lonnblad
// Copyright (C) 2009-2010 Simon Platzer
//
// 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_StdDependentXComb_H
#define ThePEG_StdDependentXComb_H
// This is the declaration of the StdDependentXComb class.
#include "StandardXComb.h"
#include "StdDependentXComb.fh"
namespace ThePEG {
/**
* The StdDependentXComb class inherits from the StandardXComb
* class and represents information on a hard subprocess in dependence
* of another hard subprocess referred to by the head XComb object.
* Such associations are commonly encountered in higher order corrections
* carried ouut within the subtraction method. This is indeed the main
* application of the StdXCombGroup and StdDependentXComb classes.
*
* @see StdXCombGroup
* @see MEGroup
*/
class StdDependentXComb: public StandardXComb {
/** MEBase needs to be a friend. */
friend class MEBase;
public:
/** @name Standard constructors and destructors. */
//@{
/**
* Standard constructor.
*/
StdDependentXComb(tStdXCombPtr newHead,
const PBPair & newPartonBins, tMEPtr newME,
const DiagramVector & newDiagrams);
/**
* Default constructor.
*/
StdDependentXComb();
/**
* Destructor.
*/
virtual ~StdDependentXComb();
public:
/**
* Return the cross section differential in the variables
* previously supplied. The PDF weight is taken from the
* lastPDFWeight supplied by the head XComb object.
*/
CrossSection dSigDR();
/**
* Setup information on incoming partons depending
* on the information previously supplied through the
* choice of diagram and incoming momenta in the first
* two entries of meMomenta(). Partons are not actually
* extracted from the incoming particles, though a subprocess
* detached from the current Event may be created.
*/
void setIncomingPartons();
/**
* Indicate that information on incoming partons
* has to be collected.
*/
void remakeIncoming() { resetIncoming = true; }
/**
* Set the process as selected by the dependent matrix element.
*/
void setProcess();
/**
* Construct a sub-process object from the information available.
*/
virtual tSubProPtr construct();
/**
* Properly setup the PartonBinInstance objects
* provided a sub process has been constructed
* using this XComb.
*/
void setPartonBinInstances(Energy2 scale = ZERO);
/** @name Functions used for collecting statistics. */
//@{
/**
* The statistics object for this XComb.
*/
virtual const XSecStat & stats() const { return head()->stats(); }
/**
* Select the current event. It will later be rejected with a
* probability given by \a weight.
*/
virtual void select(double weight) { head()->select(weight); }
/**
* Accept the current event assuming it was previously selcted.
*/
virtual void accept() { head()->accept(); }
/**
* Reject the current event assuming it was previously accepted. If
* weighted events are produced, the \a weight should be the same as
* the previous call to select(double).
*/
virtual void reject(double weight = 1.0) { head()->reject(weight); }
/**
* Reset statistics.
*/
virtual void reset() { head()->reset(); }
//@}
public:
/** @name Functions used by the persistent I/O system. */
//@{
/**
* Function used to write out object persistently.
* @param os the persistent output stream written to.
*/
void persistentOutput(PersistentOStream & os) const;
/**
* Function used to read in object persistently.
* @param is the persistent input stream read from.
* @param version the version number of the object when written.
*/
void persistentInput(PersistentIStream & is, int version);
//@}
/**
* Standard Init function used to initialize the interface.
*/
static void Init();
private:
/**
* Wether or not we have to reset the incoming partons
*/
bool resetIncoming;
private:
/**
* Describe a concrete class with persistent data.
*/
static ClassDescription<StdDependentXComb> initStdDependentXComb;
/**
* Private and non-existent assignment operator.
*/
StdDependentXComb & operator=(const StdDependentXComb &);
};
/** @cond TRAITSPECIALIZATIONS */
/**
* This template specialization informs ThePEG about the base class of
* StdDependentXComb.
*/
template <>
struct BaseClassTrait<StdDependentXComb,1> {
/** Typedef of the base class of StdDependentXComb. */
typedef StandardXComb NthBase;
};
/**
* This template specialization informs ThePEG about the name of the
* StdDependentXComb class.
*/
template <>
struct ClassTraits<StdDependentXComb>:
public ClassTraitsBase<StdDependentXComb> {
/** Return the class name. */
static string className() { return "ThePEG::StdDependentXComb"; }
};
/** @endcond */
}
#endif /* ThePEG_StdDependentXComb_H */
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