1 | // SigmaExtraDim.h is a part of the PYTHIA event generator. |
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2 | // Copyright (C) 2012 Torbjorn Sjostrand. |
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3 | // Copyright (C) 2012 Stefan Ask for the *LED* routines. |
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4 | // PYTHIA is licenced under the GNU GPL version 2, see COPYING for details. |
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5 | // Please respect the MCnet Guidelines, see GUIDELINES for details. |
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6 | |
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7 | // Header file for extra-dimensional-process differential cross sections. |
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8 | // Contains classes derived from SigmaProcess via Sigma(1/2)Process. |
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9 | |
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10 | #ifndef Pythia8_SigmaExtraDim_H |
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11 | #define Pythia8_SigmaExtraDim_H |
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12 | |
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13 | #include "SigmaProcess.h" |
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14 | |
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15 | namespace Pythia8 { |
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16 | |
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17 | //========================================================================== |
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18 | |
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19 | // A derived class for g g -> G^* (excited graviton state). |
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20 | |
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21 | class Sigma1gg2GravitonStar : public Sigma1Process { |
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22 | |
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23 | public: |
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24 | |
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25 | // Constructor. |
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26 | Sigma1gg2GravitonStar() {} |
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27 | |
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28 | // Initialize process. |
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29 | virtual void initProc(); |
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30 | |
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31 | // Calculate flavour-independent parts of cross section. |
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32 | virtual void sigmaKin(); |
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33 | |
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34 | // Evaluate sigmaHat(sHat). |
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35 | virtual double sigmaHat() {return sigma;} |
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36 | |
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37 | // Select flavour, colour and anticolour. |
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38 | virtual void setIdColAcol(); |
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39 | |
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40 | // Evaluate weight for G* decay angle. |
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41 | virtual double weightDecay( Event& process, int iResBeg, int iResEnd); |
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42 | |
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43 | // Info on the subprocess. |
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44 | virtual string name() const {return "g g -> G*";} |
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45 | virtual int code() const {return 5001;} |
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46 | virtual string inFlux() const {return "gg";} |
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47 | virtual int resonanceA() const {return idGstar;} |
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48 | |
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49 | private: |
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50 | |
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51 | // Parameters set at initialization or for current kinematics. |
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52 | bool eDsmbulk, eDvlvl; |
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53 | int idGstar; |
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54 | double mRes, GammaRes, m2Res, GamMRat, kappaMG, sigma; |
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55 | |
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56 | // Couplings between graviton and SM (indexed by particle id). |
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57 | double eDcoupling[27]; |
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58 | |
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59 | // Pointer to properties of the particle species, to access decay channels. |
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60 | ParticleDataEntry* gStarPtr; |
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61 | |
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62 | }; |
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63 | |
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64 | //========================================================================== |
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65 | |
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66 | // A derived class for f fbar -> G^* (excited graviton state). |
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67 | |
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68 | class Sigma1ffbar2GravitonStar : public Sigma1Process { |
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69 | |
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70 | public: |
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71 | |
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72 | // Constructor. |
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73 | Sigma1ffbar2GravitonStar() {} |
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74 | |
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75 | // Initialize process. |
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76 | virtual void initProc(); |
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77 | |
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78 | // Calculate flavour-independent parts of cross section. |
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79 | virtual void sigmaKin(); |
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80 | |
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81 | // Evaluate sigmaHat(sHat). |
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82 | virtual double sigmaHat(); |
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83 | |
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84 | // Select flavour, colour and anticolour. |
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85 | virtual void setIdColAcol(); |
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86 | |
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87 | // Evaluate weight for G* decay angle. |
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88 | virtual double weightDecay( Event& process, int iResBeg, int iResEnd); |
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89 | |
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90 | // Info on the subprocess. |
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91 | virtual string name() const {return "f fbar -> G*";} |
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92 | virtual int code() const {return 5002;} |
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93 | virtual string inFlux() const {return "ffbarSame";} |
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94 | virtual int resonanceA() const {return idGstar;} |
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95 | |
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96 | private: |
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97 | |
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98 | // Parameters set at initialization or for current kinematics. |
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99 | bool eDsmbulk, eDvlvl; |
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100 | int idGstar; |
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101 | double mRes, GammaRes, m2Res, GamMRat, kappaMG, sigma0; |
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102 | |
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103 | // Couplings between graviton and SM (indexed by particle id). |
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104 | double eDcoupling[27]; |
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105 | |
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106 | // Pointer to properties of the particle species, to access decay channels. |
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107 | ParticleDataEntry* gStarPtr; |
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108 | |
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109 | }; |
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110 | |
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111 | //========================================================================== |
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112 | |
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113 | // A derived class for q qbar -> g^*/KK-gluon^* (excited kk-gluon state). |
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114 | |
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115 | class Sigma1qqbar2KKgluonStar : public Sigma1Process { |
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116 | |
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117 | public: |
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118 | |
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119 | // Constructor. |
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120 | Sigma1qqbar2KKgluonStar() {} |
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121 | |
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122 | // Initialize process. |
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123 | virtual void initProc(); |
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124 | |
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125 | // Calculate flavour-independent parts of cross section. |
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126 | virtual void sigmaKin(); |
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127 | |
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128 | // Evaluate sigmaHat(sHat). |
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129 | virtual double sigmaHat(); |
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130 | |
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131 | // Select flavour, colour and anticolour. |
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132 | virtual void setIdColAcol(); |
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133 | |
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134 | // Evaluate weight for g* decay angle. |
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135 | virtual double weightDecay( Event& process, int iResBeg, int iResEnd); |
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136 | |
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137 | // Info on the subprocess. |
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138 | virtual string name() const {return "q qbar -> g*/KK-gluon*";} |
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139 | virtual int code() const {return 5006;} |
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140 | virtual string inFlux() const {return "qqbarSame";} |
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141 | virtual int resonanceA() const {return idKKgluon;} |
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142 | |
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143 | private: |
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144 | |
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145 | // Parameters set at initialization or for current kinematics. |
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146 | int idKKgluon; |
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147 | double mRes, GammaRes, m2Res, GamMRat; |
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148 | double sumSM, sumInt, sumKK, sigSM, sigInt, sigKK; |
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149 | |
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150 | // Couplings between kk gluon and SM (indexed by particle id). |
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151 | // Helicity dependent couplings. Use vector/axial-vector |
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152 | // couplings internally, gv/ga = 0.5 * (gL +/- gR). |
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153 | double eDgv[10], eDga[10]; |
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154 | |
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155 | // Interference parameter. |
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156 | int interfMode; |
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157 | |
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158 | // Pointer to properties of the particle species, to access decay |
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159 | // channels. |
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160 | ParticleDataEntry* gStarPtr; |
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161 | |
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162 | }; |
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163 | |
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164 | //========================================================================== |
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165 | |
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166 | // A derived class for g g -> G^* g (excited graviton state). |
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167 | |
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168 | class Sigma2gg2GravitonStarg : public Sigma2Process { |
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169 | |
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170 | public: |
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171 | |
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172 | // Constructor. |
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173 | Sigma2gg2GravitonStarg() {} |
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174 | |
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175 | // Initialize process. |
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176 | virtual void initProc(); |
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177 | |
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178 | // Calculate flavour-independent parts of cross section. |
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179 | virtual void sigmaKin(); |
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180 | |
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181 | // Evaluate sigmaHat(sHat). |
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182 | virtual double sigmaHat() {return sigma;} |
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183 | |
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184 | // Select flavour, colour and anticolour. |
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185 | virtual void setIdColAcol(); |
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186 | |
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187 | // Evaluate weight: currently isotropic (except secondary top decay).. |
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188 | virtual double weightDecay( Event& process, int iResBeg, int iResEnd); |
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189 | |
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190 | // Info on the subprocess. |
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191 | virtual string name() const {return "g g -> G* g";} |
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192 | virtual int code() const {return 5003;} |
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193 | virtual string inFlux() const {return "gg";} |
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194 | virtual int id3Mass() const {return idGstar;} |
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195 | |
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196 | private: |
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197 | |
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198 | // Parameters set at initialization or for current kinematics. |
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199 | int idGstar; |
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200 | double mRes, GammaRes, m2Res, GamMRat, kappaMG, openFrac, sigma; |
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201 | |
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202 | }; |
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203 | |
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204 | //========================================================================== |
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205 | |
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206 | // A derived class for q g -> G^* q (excited graviton state). |
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207 | |
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208 | class Sigma2qg2GravitonStarq : public Sigma2Process { |
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209 | |
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210 | public: |
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211 | |
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212 | // Constructor. |
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213 | Sigma2qg2GravitonStarq() {} |
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214 | |
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215 | // Initialize process. |
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216 | virtual void initProc(); |
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217 | |
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218 | // Calculate flavour-independent parts of cross section. |
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219 | virtual void sigmaKin(); |
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220 | |
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221 | // Evaluate sigmaHat(sHat). |
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222 | virtual double sigmaHat() {return sigma;} |
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223 | |
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224 | // Select flavour, colour and anticolour. |
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225 | virtual void setIdColAcol(); |
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226 | |
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227 | // Evaluate weight: currently isotropic (except secondary top decay). |
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228 | virtual double weightDecay( Event& process, int iResBeg, int iResEnd); |
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229 | |
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230 | // Info on the subprocess. |
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231 | virtual string name() const {return "q g -> G* q";} |
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232 | virtual int code() const {return 5004;} |
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233 | virtual string inFlux() const {return "qg";} |
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234 | virtual int id3Mass() const {return idGstar;} |
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235 | |
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236 | private: |
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237 | |
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238 | // Parameters set at initialization or for current kinematics. |
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239 | int idGstar; |
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240 | double mRes, GammaRes, m2Res, GamMRat, kappaMG, openFrac, sigma; |
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241 | |
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242 | }; |
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243 | |
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244 | //========================================================================== |
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245 | |
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246 | // A derived class for q qbar -> G^* g (excited graviton state). |
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247 | |
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248 | class Sigma2qqbar2GravitonStarg : public Sigma2Process { |
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249 | |
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250 | public: |
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251 | |
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252 | // Constructor. |
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253 | Sigma2qqbar2GravitonStarg() {} |
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254 | |
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255 | // Initialize process. |
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256 | virtual void initProc(); |
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257 | |
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258 | // Calculate flavour-independent parts of cross section. |
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259 | virtual void sigmaKin(); |
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260 | |
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261 | // Evaluate sigmaHat(sHat). |
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262 | virtual double sigmaHat() {return sigma;} |
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263 | |
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264 | // Select flavour, colour and anticolour. |
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265 | virtual void setIdColAcol(); |
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266 | |
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267 | // Evaluate weight: currently isotropic (except secondary top decay). |
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268 | virtual double weightDecay( Event& process, int iResBeg, int iResEnd); |
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269 | |
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270 | // Info on the subprocess. |
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271 | virtual string name() const {return "q qbar -> G* g";} |
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272 | virtual int code() const {return 5005;} |
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273 | virtual string inFlux() const {return "qqbarSame";} |
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274 | virtual int id3Mass() const {return idGstar;} |
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275 | |
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276 | private: |
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277 | |
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278 | // Parameters set at initialization or for current kinematics. |
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279 | int idGstar; |
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280 | double mRes, GammaRes, m2Res, GamMRat, kappaMG, openFrac, sigma; |
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281 | |
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282 | }; |
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283 | |
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284 | //========================================================================== |
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285 | |
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286 | // NOAM: A derived class for, f fbar -> (gamma/Z)_KKTower -> F Fbar, |
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287 | // for one heavy F. |
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288 | // Process provided by N. Hod et al. and is described in arXiv:XXXX.YYYY |
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289 | |
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290 | class Sigma2ffbar2TEVffbar : public Sigma2Process { |
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291 | |
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292 | public: |
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293 | |
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294 | // Constructor. |
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295 | Sigma2ffbar2TEVffbar(int idIn, int codeIn) : idNew(idIn), codeSave(codeIn) {} |
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296 | |
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297 | // Initialize process. |
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298 | virtual void initProc(); |
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299 | |
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300 | // Calculate flavour-independent parts of cross section. |
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301 | virtual void sigmaKin(); |
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302 | |
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303 | // Evaluate sigmaHat(sHat). |
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304 | virtual double sigmaHat(); |
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305 | |
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306 | // Select flavour, colour and anticolour. |
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307 | virtual void setIdColAcol(); |
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308 | |
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309 | // Evaluate weight for W decay angles in top decay (else inactive). |
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310 | virtual double weightDecay( Event& process, int iResBeg, int iResEnd); |
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311 | |
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312 | // Info on the subprocess. |
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313 | virtual string name() const {return nameSave;} |
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314 | virtual int code() const {return codeSave;} |
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315 | virtual string inFlux() const {return "ffbarSame";} |
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316 | virtual bool isSChannel() const {return true;} |
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317 | virtual int idSChannel() const {return 5000023;} |
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318 | virtual int resonanceA() const {return 23;} |
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319 | virtual int resonanceB() const {return 5000023;} |
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320 | virtual int id3Mass() const {return idNew;} |
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321 | virtual int id4Mass() const {return idNew;} |
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322 | // Add phase-space sampling also around the Z_KK resonance. |
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323 | virtual int resonanceA(); |
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324 | virtual int resonanceB(); |
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325 | |
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326 | private: |
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327 | |
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328 | // Values stored for process type. |
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329 | string nameSave; |
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330 | int idNew, gmZmode, codeSave, nexcitationmax; |
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331 | bool isPhysical; |
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332 | double gPlusf, gMinusf, gPlusF, gMinusF, gPlusTop, gMinusTop, |
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333 | gPlus, gMinus, gf, gF; |
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334 | double mRes, m2Res, mStar, mTop, m2Top, mZKKn, m2ZKKn, m2gmKKn, mgmKKn, |
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335 | alphaemfixed; |
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336 | double helicityME2, coefTot, coefAngular; |
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337 | double mr, betaf, cosThe, openFracPair; |
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338 | double wgmKKFactor, wgmKKn, wZKKn, |
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339 | wZ0, ttbarwZKKn, ttbarwgmKKn, |
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340 | ttbarwFactorA, ttbarwFactorB; |
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341 | double phaseSpacemHatMin, phaseSpacemHatMax; |
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342 | complex gammaProp, resProp, gmPropKK, ZPropKK, totalProp; |
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343 | complex mI; |
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344 | }; |
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345 | |
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346 | //========================================================================== |
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347 | |
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348 | // A derived class for g g -> U/G g (real graviton emission in |
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349 | // large extra dimensions or unparticle emission). |
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350 | |
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351 | class Sigma2gg2LEDUnparticleg : public Sigma2Process { |
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352 | |
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353 | public: |
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354 | |
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355 | // Constructor: bool Graviton = true, to use LED graviton settings. |
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356 | Sigma2gg2LEDUnparticleg( bool Graviton ) : eDgraviton(Graviton) {} |
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357 | |
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358 | // Initialize process. |
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359 | virtual void initProc(); |
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360 | |
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361 | // Calculate flavour-independent parts of cross section; |
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362 | // first step when inflavours unknown. |
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363 | virtual void sigmaKin(); |
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364 | |
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365 | // Evaluate sigmaHat(sHat); second step for given inflavours. |
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366 | virtual double sigmaHat(); |
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367 | |
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368 | // Select flavour, colour and anticolour. |
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369 | virtual void setIdColAcol(); |
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370 | |
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371 | // Info on the subprocess. |
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372 | virtual string name() const {return |
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373 | (eDgraviton ? "g g -> G g" : "g g -> U g") ;} |
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374 | virtual int code() const {return (eDgraviton ? 5021 : 5045);} |
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375 | virtual string inFlux() const {return "gg";} |
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376 | virtual int id3Mass() const {return 5000039;} |
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377 | virtual int id4Mass() const {return 21;} |
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378 | |
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379 | private: |
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380 | |
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381 | bool eDgraviton; |
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382 | int eDspin, eDnGrav, eDidG, eDcutoff; |
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383 | double mG, mGS, eDsigma0, eDdU, eDLambdaU, eDlambda, eDconstantTerm, |
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384 | eDtff, eDcf; |
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385 | |
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386 | }; |
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387 | |
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388 | //========================================================================== |
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389 | |
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390 | // A derived class for q g -> U/G q (real graviton emission in |
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391 | // large extra dimensions or unparticle emission). |
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392 | |
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393 | class Sigma2qg2LEDUnparticleq : public Sigma2Process { |
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394 | |
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395 | public: |
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396 | |
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397 | // Constructor: bool Graviton = true, to use LED graviton settings. |
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398 | Sigma2qg2LEDUnparticleq( bool Graviton) : eDgraviton(Graviton) {} |
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399 | |
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400 | // Initialize process. |
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401 | virtual void initProc(); |
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402 | |
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403 | // Calculate flavour-independent parts of cross section; |
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404 | // first step when inflavours unknown. |
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405 | virtual void sigmaKin(); |
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406 | |
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407 | // Evaluate sigmaHat(sHat); second step for given inflavours. |
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408 | virtual double sigmaHat(); |
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409 | |
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410 | // Select flavour, colour and anticolour. |
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411 | virtual void setIdColAcol(); |
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412 | |
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413 | // Info on the subprocess. |
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414 | virtual string name() const {return |
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415 | (eDgraviton ? "q g -> G q" : "q g -> U q") ;} |
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416 | virtual int code() const {return (eDgraviton ? 5022 : 5046);} |
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417 | virtual string inFlux() const {return "qg";} |
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418 | virtual int id3Mass() const {return 5000039;} |
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419 | |
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420 | private: |
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421 | |
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422 | bool eDgraviton; |
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423 | int eDspin, eDnGrav, eDidG, eDcutoff; |
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424 | double mG, mGS, eDsigma0, eDdU, eDLambdaU, eDlambda, eDconstantTerm, |
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425 | eDtff, eDgf, eDcf; |
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426 | |
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427 | }; |
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428 | |
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429 | //========================================================================== |
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430 | |
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431 | // A derived class for q qbar -> U/G g (real graviton emission in |
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432 | // large extra dimensions or unparticle emission). |
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433 | |
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434 | class Sigma2qqbar2LEDUnparticleg : public Sigma2Process { |
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435 | |
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436 | public: |
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437 | |
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438 | // Constructor: bool Graviton = true, to use LED graviton settings. |
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439 | Sigma2qqbar2LEDUnparticleg( bool Graviton) : eDgraviton(Graviton) {} |
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440 | |
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441 | // Initialize process. |
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442 | virtual void initProc(); |
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443 | |
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444 | // Calculate flavour-independent parts of cross section; |
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445 | // first step when inflavours unknown. |
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446 | virtual void sigmaKin(); |
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447 | |
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448 | // Evaluate sigmaHat(sHat); second step for given inflavours. |
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449 | virtual double sigmaHat(); |
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450 | |
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451 | // Select flavour, colour and anticolour. |
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452 | virtual void setIdColAcol(); |
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453 | |
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454 | // Info on the subprocess. |
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455 | virtual string name() const {return |
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456 | (eDgraviton ? "q qbar -> G g" : "q qbar -> U g") ;} |
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457 | virtual int code() const {return (eDgraviton ? 5023 : 5047);} |
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458 | virtual string inFlux() const {return "qqbarSame";} |
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459 | virtual int id3Mass() const {return 5000039;} |
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460 | virtual int id4Mass() const {return 21;} |
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461 | |
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462 | private: |
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463 | |
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464 | bool eDgraviton; |
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465 | int eDspin, eDnGrav, eDidG, eDcutoff; |
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466 | double mG, mGS, eDsigma0, eDdU, eDLambdaU, eDlambda, eDconstantTerm, |
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467 | eDtff, eDgf, eDcf; |
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468 | |
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469 | }; |
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470 | |
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471 | //========================================================================== |
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472 | |
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473 | // A derived class for f fbar -> U/G Z (real graviton emission in |
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474 | // large extra dimensions or unparticle emission). |
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475 | |
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476 | class Sigma2ffbar2LEDUnparticleZ : public Sigma2Process { |
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477 | |
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478 | public: |
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479 | |
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480 | // Constructor: bool Graviton = true, to use LED graviton settings. |
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481 | Sigma2ffbar2LEDUnparticleZ( bool Graviton) : eDgraviton(Graviton) {} |
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482 | |
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483 | // Initialize process. |
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484 | virtual void initProc(); |
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485 | |
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486 | // Calculate flavour-independent parts of cross section; |
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487 | // first step when inflavours unknown. |
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488 | virtual void sigmaKin(); |
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489 | |
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490 | // Evaluate sigmaHat(sHat); second step for given inflavours. |
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491 | virtual double sigmaHat(); |
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492 | |
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493 | // Select flavour, colour and anticolour. |
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494 | virtual void setIdColAcol(); |
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495 | |
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496 | // Info on the subprocess. |
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497 | virtual string name() const {return |
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498 | (eDgraviton ? "f fbar -> G Z" : "f fbar -> U Z") ;} |
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499 | virtual int code() const {return (eDgraviton ? 5024 : 5041);} |
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500 | virtual string inFlux() const {return "ffbarSame";} |
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501 | virtual int id3Mass() const {return 5000039;} |
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502 | virtual int id4Mass() const {return 23;} |
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503 | virtual int resonanceA() const {return 23;} |
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504 | virtual int gmZmode() const {return 2;} |
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505 | |
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506 | private: |
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507 | |
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508 | // Constants: could only be changed in the code itself. |
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509 | static const double FIXRATIO; |
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510 | |
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511 | int eDspin, eDnGrav, eDcutoff, eDidG; |
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512 | bool eDgraviton; |
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513 | double eDdU, eDLambdaU, eDlambda, eDratio, eDlambdaPrime, |
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514 | eDtff, eDconstantTerm; |
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515 | double sHS, tHS, uHS, tHC, uHC, tHQ, uHQ, tHuH, mU, mUS, mZ, widZ, |
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516 | mZS, mwZS, thetaWRat, eDsigma0; |
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517 | |
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518 | }; |
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519 | |
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520 | //========================================================================== |
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521 | |
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522 | // A derived class for f fbar -> U/G gamma (real graviton emission in |
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523 | // large extra dimensions or unparticle emission). |
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524 | |
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525 | class Sigma2ffbar2LEDUnparticlegamma : public Sigma2Process { |
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526 | |
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527 | public: |
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528 | |
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529 | // Constructor: bool Graviton = true, to use LED graviton settings. |
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530 | Sigma2ffbar2LEDUnparticlegamma( bool Graviton) : eDgraviton(Graviton) {} |
---|
531 | |
---|
532 | // Initialize process. |
---|
533 | virtual void initProc(); |
---|
534 | |
---|
535 | // Calculate flavour-independent parts of cross section; |
---|
536 | // first step when inflavours unknown. |
---|
537 | virtual void sigmaKin(); |
---|
538 | |
---|
539 | // Evaluate sigmaHat(sHat); second step for given inflavours. |
---|
540 | virtual double sigmaHat(); |
---|
541 | |
---|
542 | // Select flavour, colour and anticolour. |
---|
543 | virtual void setIdColAcol(); |
---|
544 | |
---|
545 | // Info on the subprocess. |
---|
546 | virtual string name() const {return |
---|
547 | (eDgraviton ? "f fbar -> G gamma" : "f fbar -> U gamma") ;} |
---|
548 | virtual int code() const {return (eDgraviton ? 5025 : 5042);} |
---|
549 | virtual string inFlux() const {return "ffbarSame";} |
---|
550 | virtual int id3Mass() const {return 5000039;} |
---|
551 | virtual int id4Mass() const {return 22;} |
---|
552 | |
---|
553 | private: |
---|
554 | |
---|
555 | // Constants: could only be changed in the code itself. |
---|
556 | static const double FIXRATIO; |
---|
557 | |
---|
558 | int eDspin, eDnGrav, eDcutoff, eDidG; |
---|
559 | bool eDgraviton; |
---|
560 | double eDdU, eDLambdaU, eDlambda, eDratio, eDlambdaPrime, |
---|
561 | eDtff, eDconstantTerm; |
---|
562 | double sHS, tHS, uHS, tHC, uHC, tHQ, uHQ, tHuH, mU, mUS, mZ, widZ, |
---|
563 | mZS, mwZS, thetaWRat, eDsigma0; |
---|
564 | |
---|
565 | }; |
---|
566 | |
---|
567 | //========================================================================== |
---|
568 | |
---|
569 | // A derived class for f fbar -> (LED G*/U*) -> gamma gamma |
---|
570 | // (virtual graviton/unparticle exchange). |
---|
571 | |
---|
572 | class Sigma2ffbar2LEDgammagamma : public Sigma2Process { |
---|
573 | |
---|
574 | public: |
---|
575 | |
---|
576 | // Constructor: bool Graviton = true, to use LED graviton settings. |
---|
577 | Sigma2ffbar2LEDgammagamma( bool Graviton) : eDgraviton(Graviton) {} |
---|
578 | |
---|
579 | // Initialize process. |
---|
580 | virtual void initProc(); |
---|
581 | |
---|
582 | // Calculate flavour-independent parts of cross section; |
---|
583 | // first step when inflavours unknown. |
---|
584 | virtual void sigmaKin(); |
---|
585 | |
---|
586 | // Evaluate sigmaHat(sHat); second step for given inflavours. |
---|
587 | virtual double sigmaHat(); |
---|
588 | |
---|
589 | // Select flavour, colour and anticolour. |
---|
590 | virtual void setIdColAcol(); |
---|
591 | |
---|
592 | // Info on the subprocess. |
---|
593 | virtual string name() const {return |
---|
594 | (eDgraviton ? "f fbar -> (LED G*) -> gamma gamma" |
---|
595 | : "f fbar -> (U*) -> gamma gamma") ;} |
---|
596 | virtual int code() const {return (eDgraviton ? 5026 : 5043);} |
---|
597 | virtual string inFlux() const {return "ffbarSame";} |
---|
598 | |
---|
599 | private: |
---|
600 | |
---|
601 | int eDspin, eDcutoff, eDnGrav, eDnegInt; |
---|
602 | bool eDgraviton; |
---|
603 | double eDdU, eDLambdaU, eDlambda, eDlambda2chi, |
---|
604 | eDterm1, eDterm2, eDterm3, eDtff; |
---|
605 | |
---|
606 | }; |
---|
607 | |
---|
608 | //========================================================================== |
---|
609 | |
---|
610 | // A derived class for g g -> (LED G*/U*) -> gamma gamma |
---|
611 | // (virtual graviton/unparticle exchange). |
---|
612 | |
---|
613 | class Sigma2gg2LEDgammagamma : public Sigma2Process { |
---|
614 | |
---|
615 | public: |
---|
616 | |
---|
617 | // Constructor: bool Graviton = true, to use LED graviton settings. |
---|
618 | Sigma2gg2LEDgammagamma( bool Graviton) : eDgraviton(Graviton) {} |
---|
619 | |
---|
620 | // Initialize process. |
---|
621 | virtual void initProc(); |
---|
622 | |
---|
623 | // Calculate flavour-independent parts of cross section; |
---|
624 | // first step when inflavours unknown. |
---|
625 | virtual void sigmaKin(); |
---|
626 | |
---|
627 | // Evaluate sigmaHat(sHat); second step for given inflavours. |
---|
628 | virtual double sigmaHat(); |
---|
629 | |
---|
630 | // Select flavour, colour and anticolour. |
---|
631 | virtual void setIdColAcol(); |
---|
632 | |
---|
633 | // Info on the subprocess. |
---|
634 | virtual string name() const {return (eDgraviton |
---|
635 | ? "g g -> (LED G*) -> gamma gamma" : "g g -> (U*) -> gamma gamma") ;} |
---|
636 | virtual int code() const {return (eDgraviton ? 5027 : 5044);} |
---|
637 | virtual string inFlux() const {return "gg";} |
---|
638 | |
---|
639 | private: |
---|
640 | |
---|
641 | int eDspin, eDcutoff, eDnGrav; |
---|
642 | bool eDgraviton; |
---|
643 | double eDdU, eDLambdaU, eDlambda, eDlambda2chi, eDsigma0, eDtff; |
---|
644 | |
---|
645 | }; |
---|
646 | |
---|
647 | //========================================================================== |
---|
648 | |
---|
649 | // A derived class for f fbar -> (LED G*/U*) -> l lbar |
---|
650 | // (virtual graviton/unparticle exchange). |
---|
651 | // Does not include t-channel contributions relevant for e^+e^- to e^+e^- |
---|
652 | |
---|
653 | class Sigma2ffbar2LEDllbar : public Sigma2Process { |
---|
654 | |
---|
655 | public: |
---|
656 | |
---|
657 | // Constructor: bool Graviton = true, to use LED graviton settings. |
---|
658 | Sigma2ffbar2LEDllbar( bool Graviton) : eDgraviton(Graviton) {} |
---|
659 | |
---|
660 | // Initialize process. |
---|
661 | virtual void initProc(); |
---|
662 | |
---|
663 | // Calculate flavour-independent parts of cross section; |
---|
664 | // first step when inflavours unknown. |
---|
665 | virtual void sigmaKin(); |
---|
666 | |
---|
667 | // Evaluate sigmaHat(sHat); second step for given inflavours. |
---|
668 | virtual double sigmaHat(); |
---|
669 | |
---|
670 | // Select flavour, colour and anticolour. |
---|
671 | virtual void setIdColAcol(); |
---|
672 | |
---|
673 | // Info on the subprocess. |
---|
674 | virtual string name() const {return |
---|
675 | (eDgraviton ? "f fbar -> (LED G*) -> l l" : "f fbar -> (U*) -> l l") ;} |
---|
676 | virtual int code() const {return (eDgraviton ? 5028 : 5048);} |
---|
677 | virtual string inFlux() const {return "ffbarSame";} |
---|
678 | virtual bool isSChannel() const {return true;} |
---|
679 | |
---|
680 | private: |
---|
681 | |
---|
682 | int eDspin, eDcutoff, eDnGrav,eDnxx, eDnxy, eDnegInt; |
---|
683 | bool eDgraviton; |
---|
684 | double eDdU, eDLambdaU, eDlambda, eDlambda2chi, eDtff, |
---|
685 | eDmZ, eDmZS, eDGZ, eDGZS, eDabsMeU, eDdenomPropZ, eDrePropGamma, |
---|
686 | eDrePropZ, eDimPropZ, eDabsAS, eDreA, eDreABW, eDpoly1, eDpoly2, |
---|
687 | eDpoly3; |
---|
688 | |
---|
689 | }; |
---|
690 | |
---|
691 | //========================================================================== |
---|
692 | |
---|
693 | // A derived class for g g -> (LED G*/U*) -> l lbar |
---|
694 | // (virtual graviton/unparticle exchange). |
---|
695 | |
---|
696 | class Sigma2gg2LEDllbar : public Sigma2Process { |
---|
697 | |
---|
698 | public: |
---|
699 | |
---|
700 | // Constructor: bool Graviton = true, to use LED graviton settings. |
---|
701 | Sigma2gg2LEDllbar( bool Graviton) : eDgraviton(Graviton) {} |
---|
702 | |
---|
703 | |
---|
704 | // Initialize process. |
---|
705 | virtual void initProc(); |
---|
706 | |
---|
707 | // Calculate flavour-independent parts of cross section; |
---|
708 | // first step when inflavours unknown. |
---|
709 | virtual void sigmaKin(); |
---|
710 | |
---|
711 | // Evaluate sigmaHat(sHat); second step for given inflavours. |
---|
712 | virtual double sigmaHat() {return eDsigma0;} |
---|
713 | |
---|
714 | // Select flavour, colour and anticolour. |
---|
715 | virtual void setIdColAcol(); |
---|
716 | |
---|
717 | // Info on the subprocess. |
---|
718 | virtual string name() const {return |
---|
719 | (eDgraviton ? "g g -> (LED G*) -> l l" : "g g -> (U*) -> l l") ;} |
---|
720 | virtual int code() const {return (eDgraviton ? 5029 : 5049);} |
---|
721 | virtual string inFlux() const {return "gg";} |
---|
722 | |
---|
723 | private: |
---|
724 | |
---|
725 | int eDspin, eDcutoff, eDnGrav; |
---|
726 | bool eDgraviton; |
---|
727 | double eDdU, eDLambdaU, eDlambda, eDlambda2chi, eDsigma0, eDtff; |
---|
728 | |
---|
729 | }; |
---|
730 | |
---|
731 | //========================================================================== |
---|
732 | |
---|
733 | // A derived class for g g -> (LED G*) -> g g. |
---|
734 | |
---|
735 | class Sigma2gg2LEDgg : public Sigma2Process { |
---|
736 | |
---|
737 | public: |
---|
738 | |
---|
739 | // Constructor. |
---|
740 | Sigma2gg2LEDgg() {} |
---|
741 | |
---|
742 | // Initialize process. |
---|
743 | virtual void initProc(); |
---|
744 | |
---|
745 | // Calculate flavour-independent parts of cross section. |
---|
746 | virtual void sigmaKin(); |
---|
747 | |
---|
748 | // Evaluate d(sigmaHat)/d(tHat). |
---|
749 | virtual double sigmaHat() {return sigma;} |
---|
750 | |
---|
751 | // Select flavour, colour and anticolour. |
---|
752 | virtual void setIdColAcol(); |
---|
753 | |
---|
754 | // Info on the subprocess. |
---|
755 | virtual string name() const {return "g g -> (LED G*) -> g g";} |
---|
756 | virtual int code() const {return 5030;} |
---|
757 | virtual string inFlux() const {return "gg";} |
---|
758 | |
---|
759 | private: |
---|
760 | |
---|
761 | // Values stored for colour flow selection. |
---|
762 | double sigTS, sigUS, sigTU, sigSum, sigma; |
---|
763 | |
---|
764 | // Model parameters. |
---|
765 | int eDopMode, eDnGrav, eDcutoff, eDnegInt; |
---|
766 | double eDMD, eDLambdaT, eDtff; |
---|
767 | |
---|
768 | }; |
---|
769 | |
---|
770 | //========================================================================== |
---|
771 | |
---|
772 | // A derived class for g g -> (LED G*) -> q qbar. |
---|
773 | |
---|
774 | class Sigma2gg2LEDqqbar : public Sigma2Process { |
---|
775 | |
---|
776 | public: |
---|
777 | |
---|
778 | // Constructor. |
---|
779 | Sigma2gg2LEDqqbar() {} |
---|
780 | |
---|
781 | // Initialize process. |
---|
782 | virtual void initProc(); |
---|
783 | |
---|
784 | // Calculate flavour-independent parts of cross section. |
---|
785 | virtual void sigmaKin(); |
---|
786 | |
---|
787 | // Evaluate d(sigmaHat)/d(tHat). |
---|
788 | virtual double sigmaHat() {return sigma;} |
---|
789 | |
---|
790 | // Select flavour, colour and anticolour. |
---|
791 | virtual void setIdColAcol(); |
---|
792 | |
---|
793 | // Info on the subprocess. |
---|
794 | virtual string name() const {return "g g -> (LED G*) -> q qbar (uds)";} |
---|
795 | virtual int code() const {return 5031;} |
---|
796 | virtual string inFlux() const {return "gg";} |
---|
797 | |
---|
798 | private: |
---|
799 | |
---|
800 | // Number of quarks to be considered in massless approximation. |
---|
801 | int nQuarkNew; |
---|
802 | |
---|
803 | // Values stored for colour flow selection. |
---|
804 | int idNew; |
---|
805 | double mNew, m2New, sigTS, sigUS, sigSum, sigma; |
---|
806 | |
---|
807 | // Model parameters. |
---|
808 | int eDopMode, eDnGrav, eDcutoff, eDnegInt; |
---|
809 | double eDMD, eDLambdaT, eDtff; |
---|
810 | |
---|
811 | }; |
---|
812 | |
---|
813 | //========================================================================== |
---|
814 | |
---|
815 | // A derived class for q g -> (LED G*) -> q g. |
---|
816 | // Use massless approximation also for Q since no alternative. |
---|
817 | |
---|
818 | class Sigma2qg2LEDqg : public Sigma2Process { |
---|
819 | |
---|
820 | public: |
---|
821 | |
---|
822 | // Constructor. |
---|
823 | Sigma2qg2LEDqg() {} |
---|
824 | |
---|
825 | // Initialize process. |
---|
826 | virtual void initProc(); |
---|
827 | |
---|
828 | // Calculate flavour-independent parts of cross section. |
---|
829 | virtual void sigmaKin(); |
---|
830 | |
---|
831 | // Evaluate d(sigmaHat)/d(tHat). |
---|
832 | virtual double sigmaHat() {return sigma;} |
---|
833 | |
---|
834 | // Select flavour, colour and anticolour. |
---|
835 | virtual void setIdColAcol(); |
---|
836 | |
---|
837 | // Info on the subprocess. |
---|
838 | virtual string name() const {return "q g -> (LED G*) -> q g";} |
---|
839 | virtual int code() const {return 5032;} |
---|
840 | virtual string inFlux() const {return "qg";} |
---|
841 | |
---|
842 | private: |
---|
843 | |
---|
844 | // Values stored for colour flow selection. |
---|
845 | double mNew, m2New, sigTS, sigTU, sigSum, sigma; |
---|
846 | |
---|
847 | // Model parameters. |
---|
848 | int eDopMode, eDnGrav, eDcutoff, eDnegInt; |
---|
849 | double eDMD, eDLambdaT, eDtff; |
---|
850 | |
---|
851 | }; |
---|
852 | |
---|
853 | //========================================================================== |
---|
854 | |
---|
855 | // A derived class for q q(bar)' -> (LED G*) -> q q(bar)'. |
---|
856 | |
---|
857 | class Sigma2qq2LEDqq : public Sigma2Process { |
---|
858 | |
---|
859 | public: |
---|
860 | |
---|
861 | // Constructor. |
---|
862 | Sigma2qq2LEDqq() {} |
---|
863 | |
---|
864 | // Initialize process. |
---|
865 | virtual void initProc(); |
---|
866 | |
---|
867 | // Calculate flavour-independent parts of cross section. |
---|
868 | virtual void sigmaKin(); |
---|
869 | |
---|
870 | // Evaluate d(sigmaHat)/d(tHat). |
---|
871 | virtual double sigmaHat(); |
---|
872 | |
---|
873 | // Select flavour, colour and anticolour. |
---|
874 | virtual void setIdColAcol(); |
---|
875 | |
---|
876 | // Info on the subprocess. |
---|
877 | virtual string name() const {return "q q(bar)' -> (LED G*) -> q q(bar)'";} |
---|
878 | virtual int code() const {return 5033;} |
---|
879 | virtual string inFlux() const {return "qq";} |
---|
880 | |
---|
881 | private: |
---|
882 | |
---|
883 | // Values stored for colour flow selection. |
---|
884 | double sigT, sigU, sigTU, sigST, sigSum; |
---|
885 | double sigGrT1, sigGrT2, sigGrU, sigGrTU, sigGrST; |
---|
886 | |
---|
887 | // Model parameters. |
---|
888 | int eDopMode, eDnGrav, eDcutoff, eDnegInt; |
---|
889 | double eDMD, eDLambdaT, eDtff; |
---|
890 | |
---|
891 | }; |
---|
892 | |
---|
893 | //========================================================================== |
---|
894 | |
---|
895 | // A derived class for q qbar -> (LED G*) -> g g. |
---|
896 | |
---|
897 | class Sigma2qqbar2LEDgg : public Sigma2Process { |
---|
898 | |
---|
899 | public: |
---|
900 | |
---|
901 | // Constructor. |
---|
902 | Sigma2qqbar2LEDgg() {} |
---|
903 | |
---|
904 | // Initialize process. |
---|
905 | virtual void initProc(); |
---|
906 | |
---|
907 | // Calculate flavour-independent parts of cross section. |
---|
908 | virtual void sigmaKin(); |
---|
909 | |
---|
910 | // Evaluate d(sigmaHat)/d(tHat). |
---|
911 | virtual double sigmaHat() {return sigma;} |
---|
912 | |
---|
913 | // Select flavour, colour and anticolour. |
---|
914 | virtual void setIdColAcol(); |
---|
915 | |
---|
916 | // Info on the subprocess. |
---|
917 | virtual string name() const {return "q qbar -> (LED G*) -> g g";} |
---|
918 | virtual int code() const {return 5034;} |
---|
919 | virtual string inFlux() const {return "qqbarSame";} |
---|
920 | |
---|
921 | private: |
---|
922 | |
---|
923 | // Values stored for colour flow selection. |
---|
924 | double sigTS, sigUS, sigSum, sigma; |
---|
925 | |
---|
926 | // Model parameters. |
---|
927 | int eDopMode, eDnGrav, eDcutoff, eDnegInt; |
---|
928 | double eDMD, eDLambdaT, eDtff; |
---|
929 | |
---|
930 | }; |
---|
931 | |
---|
932 | //========================================================================== |
---|
933 | |
---|
934 | // A derived class for q qbar -> (LED G*) -> q' qbar'. |
---|
935 | |
---|
936 | class Sigma2qqbar2LEDqqbarNew : public Sigma2Process { |
---|
937 | |
---|
938 | public: |
---|
939 | |
---|
940 | // Constructor. |
---|
941 | Sigma2qqbar2LEDqqbarNew() {} |
---|
942 | |
---|
943 | // Initialize process. |
---|
944 | virtual void initProc(); |
---|
945 | |
---|
946 | // Calculate flavour-independent parts of cross section. |
---|
947 | virtual void sigmaKin(); |
---|
948 | |
---|
949 | // Evaluate d(sigmaHat)/d(tHat). |
---|
950 | virtual double sigmaHat() {return sigma;} |
---|
951 | |
---|
952 | // Select flavour, colour and anticolour. |
---|
953 | virtual void setIdColAcol(); |
---|
954 | |
---|
955 | // Info on the subprocess. |
---|
956 | virtual string name() const {return "q qbar -> (LED G*) -> q' qbar' (uds)";} |
---|
957 | virtual int code() const {return 5035;} |
---|
958 | virtual string inFlux() const {return "qqbarSame";} |
---|
959 | |
---|
960 | private: |
---|
961 | |
---|
962 | // Number of quarks to be considered in massless approximation. |
---|
963 | int nQuarkNew; |
---|
964 | |
---|
965 | // Values stored for colour flow selection. |
---|
966 | int idNew; |
---|
967 | double mNew, m2New, sigS, sigma; |
---|
968 | |
---|
969 | // Model parameters. |
---|
970 | int eDopMode, eDnGrav, eDcutoff; |
---|
971 | double eDMD, eDLambdaT, eDtff; |
---|
972 | |
---|
973 | }; |
---|
974 | |
---|
975 | //========================================================================== |
---|
976 | |
---|
977 | } // end namespace Pythia8 |
---|
978 | |
---|
979 | #endif // Pythia8_SigmaExtraDim_H |
---|