1 | // SigmaOnia.h is a part of the PYTHIA event generator. |
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2 | // Copyright (C) 2012 Torbjorn Sjostrand. |
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3 | // PYTHIA is licenced under the GNU GPL version 2, see COPYING for details. |
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4 | // Please respect the MCnet Guidelines, see GUIDELINES for details. |
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5 | |
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6 | // Header file for charmonia/bottomonia process differential cross sections. |
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7 | // Contains classes derived from SigmaProcess via Sigma2Process. |
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8 | |
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9 | #ifndef Pythia8_SigmaOnia_H |
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10 | #define Pythia8_SigmaOnia_H |
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11 | |
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12 | #include "SigmaProcess.h" |
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13 | |
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14 | namespace Pythia8 { |
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15 | |
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16 | //========================================================================== |
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17 | |
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18 | // A derived class for g g -> QQbar[3S1(1)] g (Q = c or b). |
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19 | |
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20 | class Sigma2gg2QQbar3S11g : public Sigma2Process { |
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21 | |
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22 | public: |
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23 | |
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24 | // Constructor. |
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25 | Sigma2gg2QQbar3S11g(int idIn, int codeIn) : idNew(idIn), |
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26 | codeSave(codeIn) {} |
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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 d(sigmaHat)/d(tHat). |
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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 | // Info on the subprocess. |
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41 | virtual string name() const {return nameSave;} |
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42 | virtual int code() const {return codeSave;} |
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43 | virtual string inFlux() const {return "gg";} |
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44 | virtual int id3Mass() const {return idHad;} |
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45 | |
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46 | private: |
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47 | |
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48 | // Values stored for process type and colour flow selection. |
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49 | int idNew, idHad, codeSave; |
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50 | string nameSave; |
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51 | double oniumME, sigma; |
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52 | |
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53 | }; |
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54 | |
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55 | //========================================================================== |
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56 | |
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57 | // A derived class for g g -> QQbar[3PJ(1)] g (Q = c or b, J = 0, 1 or 2). |
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58 | |
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59 | class Sigma2gg2QQbar3PJ1g : public Sigma2Process { |
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60 | |
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61 | public: |
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62 | |
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63 | // Constructor. |
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64 | Sigma2gg2QQbar3PJ1g(int idIn, int jIn, int codeIn) : idNew(idIn), |
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65 | jSave(jIn), codeSave(codeIn) {} |
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66 | |
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67 | // Initialize process. |
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68 | virtual void initProc(); |
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69 | |
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70 | // Calculate flavour-independent parts of cross section. |
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71 | virtual void sigmaKin(); |
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72 | |
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73 | // Evaluate d(sigmaHat)/d(tHat). |
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74 | virtual double sigmaHat() {return sigma;} |
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75 | |
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76 | // Select flavour, colour and anticolour. |
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77 | virtual void setIdColAcol(); |
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78 | |
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79 | // Info on the subprocess. |
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80 | virtual string name() const {return nameSave;} |
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81 | virtual int code() const {return codeSave;} |
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82 | virtual string inFlux() const {return "gg";} |
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83 | virtual int id3Mass() const {return idHad;} |
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84 | |
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85 | private: |
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86 | |
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87 | // Values stored for process type and colour flow selection. |
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88 | int idNew, idHad, jSave, codeSave; |
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89 | string nameSave; |
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90 | double oniumME, sigma; |
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91 | |
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92 | }; |
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93 | |
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94 | //========================================================================== |
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95 | |
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96 | // A derived class for q g -> QQbar[3PJ(1)] q (Q = c or b, J = 0, 1 or 2). |
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97 | |
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98 | class Sigma2qg2QQbar3PJ1q : public Sigma2Process { |
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99 | |
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100 | public: |
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101 | |
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102 | // Constructor. |
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103 | Sigma2qg2QQbar3PJ1q(int idIn, int jIn, int codeIn) : idNew(idIn), |
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104 | jSave(jIn), codeSave(codeIn) {} |
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105 | |
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106 | // Initialize process. |
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107 | virtual void initProc(); |
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108 | |
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109 | // Calculate flavour-independent parts of cross section. |
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110 | virtual void sigmaKin(); |
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111 | |
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112 | // Evaluate d(sigmaHat)/d(tHat). |
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113 | virtual double sigmaHat() {return sigma;} |
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114 | |
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115 | // Select flavour, colour and anticolour. |
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116 | virtual void setIdColAcol(); |
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117 | |
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118 | // Info on the subprocess. |
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119 | virtual string name() const {return nameSave;} |
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120 | virtual int code() const {return codeSave;} |
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121 | virtual string inFlux() const {return "qg";} |
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122 | virtual int id3Mass() const {return idHad;} |
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123 | |
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124 | private: |
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125 | |
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126 | // Values stored for process type and colour flow selection. |
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127 | int idNew, idHad, jSave, codeSave; |
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128 | string nameSave; |
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129 | double oniumME, sigma; |
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130 | |
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131 | }; |
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132 | |
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133 | //========================================================================== |
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134 | |
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135 | // A derived class for q qbar -> QQbar[3PJ(1)] g (Q = c or b, J = 0, 1 or 2). |
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136 | |
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137 | class Sigma2qqbar2QQbar3PJ1g : public Sigma2Process { |
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138 | |
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139 | public: |
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140 | |
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141 | // Constructor. |
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142 | Sigma2qqbar2QQbar3PJ1g(int idIn, int jIn, int codeIn) : idNew(idIn), |
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143 | jSave(jIn), codeSave(codeIn) {} |
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144 | |
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145 | // Initialize process. |
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146 | virtual void initProc(); |
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147 | |
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148 | // Calculate flavour-independent parts of cross section. |
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149 | virtual void sigmaKin(); |
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150 | |
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151 | // Evaluate d(sigmaHat)/d(tHat). |
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152 | virtual double sigmaHat() {return sigma;} |
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153 | |
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154 | // Select flavour, colour and anticolour. |
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155 | virtual void setIdColAcol(); |
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156 | |
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157 | // Info on the subprocess. |
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158 | virtual string name() const {return nameSave;} |
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159 | virtual int code() const {return codeSave;} |
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160 | virtual string inFlux() const {return "qqbarSame";} |
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161 | virtual int id3Mass() const {return idHad;} |
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162 | |
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163 | private: |
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164 | |
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165 | // Values stored for process type and colour flow selection. |
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166 | int idNew, idHad, jSave, codeSave; |
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167 | string nameSave; |
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168 | double oniumME, sigma; |
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169 | |
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170 | }; |
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171 | |
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172 | //========================================================================== |
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173 | |
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174 | // A derived class for g g -> QQbar[X(8)] g (Q = c or b, X = 3S1, 1S0 or 3PJ). |
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175 | |
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176 | class Sigma2gg2QQbarX8g : public Sigma2Process { |
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177 | |
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178 | public: |
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179 | |
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180 | // Constructor. |
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181 | Sigma2gg2QQbarX8g(int idIn, int stateIn, int codeIn) : idNew(idIn), |
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182 | stateSave(stateIn), codeSave(codeIn) {} |
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183 | |
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184 | // Initialize process. |
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185 | virtual void initProc(); |
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186 | |
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187 | // Calculate flavour-independent parts of cross section. |
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188 | virtual void sigmaKin(); |
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189 | |
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190 | // Evaluate d(sigmaHat)/d(tHat). |
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191 | virtual double sigmaHat() {return sigma;} |
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192 | |
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193 | // Select flavour, colour and anticolour. |
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194 | virtual void setIdColAcol(); |
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195 | |
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196 | // Info on the subprocess. |
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197 | virtual string name() const {return nameSave;} |
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198 | virtual int code() const {return codeSave;} |
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199 | virtual string inFlux() const {return "gg";} |
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200 | virtual int id3Mass() const {return idHad;} |
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201 | |
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202 | private: |
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203 | |
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204 | // Values stored for process type and colour flow selection. |
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205 | int idNew, idHad, stateSave, codeSave; |
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206 | string nameSave; |
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207 | double oniumME, sigma; |
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208 | |
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209 | }; |
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210 | |
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211 | //========================================================================== |
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212 | |
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213 | // A derived class for q g -> QQbar[X(8)] q (Q = c or b, X = 3S1, 1S0 or 3PJ). |
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214 | |
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215 | class Sigma2qg2QQbarX8q : public Sigma2Process { |
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216 | |
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217 | public: |
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218 | |
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219 | // Constructor. |
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220 | Sigma2qg2QQbarX8q(int idIn, int stateIn, int codeIn) : idNew(idIn), |
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221 | stateSave(stateIn), codeSave(codeIn) {} |
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222 | |
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223 | // Initialize process. |
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224 | virtual void initProc(); |
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225 | |
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226 | // Calculate flavour-independent parts of cross section. |
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227 | virtual void sigmaKin(); |
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228 | |
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229 | // Evaluate d(sigmaHat)/d(tHat). |
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230 | virtual double sigmaHat() {return sigma;} |
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231 | |
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232 | // Select flavour, colour and anticolour. |
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233 | virtual void setIdColAcol(); |
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234 | |
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235 | // Info on the subprocess. |
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236 | virtual string name() const {return nameSave;} |
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237 | virtual int code() const {return codeSave;} |
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238 | virtual string inFlux() const {return "qg";} |
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239 | virtual int id3Mass() const {return idHad;} |
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240 | |
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241 | private: |
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242 | |
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243 | // Values stored for process type and colour flow selection. |
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244 | int idNew, idHad, stateSave, codeSave; |
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245 | string nameSave; |
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246 | double oniumME, sigma; |
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247 | |
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248 | }; |
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249 | |
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250 | //========================================================================== |
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251 | |
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252 | // A derived class for q qbar -> QQbar[X(8)] g (Q = c or b, |
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253 | // X = 3S1, 1S0 or 3PJ). |
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254 | |
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255 | class Sigma2qqbar2QQbarX8g : public Sigma2Process { |
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256 | |
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257 | public: |
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258 | |
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259 | // Constructor. |
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260 | Sigma2qqbar2QQbarX8g(int idIn, int stateIn, int codeIn) : idNew(idIn), |
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261 | stateSave(stateIn), codeSave(codeIn) {} |
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262 | |
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263 | // Initialize process. |
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264 | virtual void initProc(); |
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265 | |
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266 | // Calculate flavour-independent parts of cross section. |
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267 | virtual void sigmaKin(); |
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268 | |
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269 | // Evaluate d(sigmaHat)/d(tHat). |
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270 | virtual double sigmaHat() {return sigma;} |
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271 | |
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272 | // Select flavour, colour and anticolour. |
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273 | virtual void setIdColAcol(); |
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274 | |
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275 | // Info on the subprocess. |
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276 | virtual string name() const {return nameSave;} |
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277 | virtual int code() const {return codeSave;} |
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278 | virtual string inFlux() const {return "qqbarSame";} |
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279 | virtual int id3Mass() const {return idHad;} |
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280 | |
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281 | private: |
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282 | |
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283 | // Values stored for process type and colour flow selection. |
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284 | int idNew, idHad, stateSave, codeSave; |
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285 | string nameSave; |
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286 | double oniumME, sigma; |
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287 | |
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288 | }; |
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289 | |
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290 | //========================================================================== |
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291 | |
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292 | } // end namespace Pythia8 |
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293 | |
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294 | #endif // Pythia8_SigmaOnia_H |
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