/usr/include/Pythia8/Pythia8/SigmaLeptoquark.h is in libpythia8-dev 8.1.86-1.2.
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 | // SigmaLeptoquark.h is a part of the PYTHIA event generator.
// Copyright (C) 2014 Torbjorn Sjostrand.
// PYTHIA is licenced under the GNU GPL version 2, see COPYING for details.
// Please respect the MCnet Guidelines, see GUIDELINES for details.
// Header file for leptoquark-process differential cross sections.
// Contains classes derived from SigmaProcess via Sigma(1/2)Process.
// Note: since leptoquark assumed scalar no need for decay-angles routines.
#ifndef Pythia8_SigmaLeptoquark_H
#define Pythia8_SigmaLeptoquark_H
#include "Pythia8/SigmaProcess.h"
namespace Pythia8 {
//==========================================================================
// A derived class for q l -> LQ (leptoquark).
class Sigma1ql2LeptoQuark : public Sigma1Process {
public:
// Constructor.
Sigma1ql2LeptoQuark() {}
// Initialize process.
virtual void initProc();
// Calculate flavour-independent parts of cross section.
virtual void sigmaKin();
// Evaluate sigmaHat(sHat).
virtual double sigmaHat();
// Select flavour, colour and anticolour.
virtual void setIdColAcol();
// Info on the subprocess.
virtual string name() const {return "q l -> LQ (leptoquark)";}
virtual int code() const {return 3201;}
virtual string inFlux() const {return "ff";}
virtual int resonanceA() const {return 42;}
private:
// Parameters set at initialization or for current kinematics.
int idQuark, idLepton;
double mRes, GammaRes, m2Res, GamMRat, kCoup, widthIn, sigBW;
// Pointer to properties of the particle species, to access decay channel.
ParticleDataEntry* LQPtr;
};
//==========================================================================
// A derived class for q g -> LQ l (leptoquark).
class Sigma2qg2LeptoQuarkl : public Sigma2Process {
public:
// Constructor.
Sigma2qg2LeptoQuarkl() {}
// Initialize process.
virtual void initProc();
// Calculate flavour-independent parts of cross section.
virtual void sigmaKin();
// Evaluate sigmaHat(sHat).
virtual double sigmaHat();
// Select flavour, colour and anticolour.
virtual void setIdColAcol();
// Info on the subprocess.
virtual string name() const {return "q g -> LQ l (leptoquark)";}
virtual int code() const {return 3202;}
virtual string inFlux() const {return "qg";}
virtual int id3Mass() const {return 42;}
private:
// Parameters set at initialization or for current kinematics.
int idQuark, idLepton;
double mRes, GammaRes, m2Res, GamMRat, kCoup, openFracPos, openFracNeg,
sigma0;
};
//==========================================================================
// A derived class for g g -> LQ LQbar (leptoquark).
class Sigma2gg2LQLQbar : public Sigma2Process {
public:
// Constructor.
Sigma2gg2LQLQbar() {}
// Initialize process.
virtual void initProc();
// Calculate flavour-independent parts of cross section.
virtual void sigmaKin();
// Evaluate sigmaHat(sHat).
virtual double sigmaHat() {return sigma;}
// Select flavour, colour and anticolour.
virtual void setIdColAcol();
// Info on the subprocess.
virtual string name() const {return "g g -> LQ LQbar (leptoquark)";}
virtual int code() const {return 3203;}
virtual string inFlux() const {return "gg";}
virtual int id3Mass() const {return 42;}
virtual int id4Mass() const {return 42;}
private:
// Parameters set at initialization or for current kinematics.
double mRes, GammaRes, m2Res, GamMRat, openFrac, sigma;
};
//==========================================================================
// A derived class for q qbar -> LQ LQbar (leptoquark).
class Sigma2qqbar2LQLQbar : public Sigma2Process {
public:
// Constructor.
Sigma2qqbar2LQLQbar() {}
// Initialize process.
virtual void initProc();
// Calculate flavour-independent parts of cross section.
virtual void sigmaKin();
// Evaluate sigmaHat(sHat).
virtual double sigmaHat() {
return (abs(id1) == idQuark) ? sigmaSame : sigmaDiff;}
// Select flavour, colour and anticolour.
virtual void setIdColAcol();
// Info on the subprocess.
virtual string name() const {return "q qbar -> LQ LQbar (leptoquark)";}
virtual int code() const {return 3204;}
virtual string inFlux() const {return "qqbarSame";}
virtual int id3Mass() const {return 42;}
virtual int id4Mass() const {return 42;}
private:
// Parameters set at initialization or for current kinematics.
int idQuark;
double mRes, GammaRes, m2Res, GamMRat, kCoup, openFrac, sigmaDiff,
sigmaSame;
};
//==========================================================================
} // end namespace Pythia8
#endif // Pythia8_SigmaLeptoquark_H
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