1 | (* ****************************************************************** *)
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2 | (* ***** ***** *)
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3 | (* ***** FeynRules model file: Simplified s-channel DM models ***** *)
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4 | (* ***** Author: A. Martini, K. Mawatari ***** *)
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5 | (* ***** J. Wang, C.Zhang ***** *)
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6 | (* ***** ***** *)
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7 | (* ****************************************************************** *)
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8 |
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9 |
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10 | (* ************************** *)
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11 | (* ***** Information ***** *)
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12 | (* ************************** *)
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13 | M$ModelName = "DMsimp_s_spin0";
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14 |
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15 | M$Information = {
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16 | Authors -> {"A. Martini, K. Mawatari, J. Wang, C. Zhang"},
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17 | Institutions -> {"Universite catholique de Louvain, Vrije Universiteit Brussel, Johnnas Gutenberg University of Mainz, Brookhaven National Laboratory"},
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18 | Emails -> {"kentarou.mawatari@vub.ac.be","cenzhang@bnl.gov"},
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19 | URLs -> "http://feynrules.irmp.ucl.ac.be/wiki/DMsimp/",
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20 | References -> {"O. Mattelaer et al., arXiv:1508.00564",
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21 | "M. Backovic et al., arXiv:1508.05327",
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22 | "M. Neubert et al., arXiv:1508.xxxxx"},
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23 | Version -> "1.0",
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24 | Date -> "2015.08.24"
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25 | };
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26 |
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27 | (* ************************** *)
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28 | (* ***** Change log ***** *)
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29 | (* ************************** *)
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30 |
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31 | (* 2015.08.24 v1.0 - release version. *)
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32 |
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33 |
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34 | (***** Setting for interaction order (as e.g. used by MadGraph 5) ******)
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35 |
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36 | M$InteractionOrderLimit = {
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37 | {DMS, 2}
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38 | };
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39 |
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40 | M$InteractionOrderHierarchy = {
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41 | {QCD, 1}, {DMS, 2}, {QED, 2}
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42 | };
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43 |
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44 |
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45 | (* ************************** *)
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46 | (* ***** Fields ***** *)
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47 | (* ************************** *)
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48 | M$ClassesDescription = {
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49 |
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50 | S[7] == { ClassName -> Xr,
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51 | SelfConjugate -> True,
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52 | Mass -> {MXr, 10.},
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53 | Width -> 0,
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54 | PDG -> 5000001,
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55 | TeX -> Subscript[X,r],
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56 | FullName -> "Real scalar DM" },
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57 |
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58 | S[8] == { ClassName -> Xc,
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59 | SelfConjugate -> False,
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60 | Mass -> {MXc, 10.},
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61 | Width -> 0,
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62 | PDG -> 51,
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63 | TeX -> Subscript[X,c],
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64 | FullName -> "Complex scalar DM" },
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65 |
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66 | F[7] == { ClassName -> Xd,
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67 | SelfConjugate -> False,
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68 | Mass -> {MXd, 10.},
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69 | Width -> 0,
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70 | PDG -> 52,
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71 | TeX -> Subscript[X,d],
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72 | FullName -> "Dirac DM" },
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73 |
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74 | S[9] == { ClassName -> Y0,
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75 | SelfConjugate -> True,
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76 | Mass -> {MY0, 1000.},
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77 | Width -> {WY0, 10.},
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78 | PDG -> 54,
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79 | TeX -> Subscript[Y,0],
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80 | FullName -> "Scalar mediator" }
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81 |
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82 | };
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83 |
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84 |
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85 | (* ************************** *)
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86 | (* ***** Parameters ***** *)
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87 | (* ************************** *)
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88 | M$Parameters = {
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89 |
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90 | gSXr == {
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91 | ParameterType -> External,
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92 | InteractionOrder -> {DMS, 1},
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93 | BlockName -> DMINPUTS,
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94 | TeX -> Subscript[g,SXr],
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95 | Description -> "Xr-Y0 scalar coupling",
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96 | Value -> 0. },
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97 |
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98 | gSXc == {
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99 | ParameterType -> External,
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100 | InteractionOrder -> {DMS, 1},
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101 | BlockName -> DMINPUTS,
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102 | TeX -> Subscript[g,SXc],
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103 | Description -> "Xc-Y0 scalar coupling",
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104 | Value -> 0. },
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105 |
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106 | gSXd == {
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107 | ParameterType -> External,
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108 | InteractionOrder -> {DMS, 1},
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109 | BlockName -> DMINPUTS,
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110 | TeX -> Subscript[g,SXd],
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111 | Description -> "Xd-Y0 scalar coupling",
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112 | Value -> 1. },
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113 |
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114 | gPXd == {
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115 | ParameterType -> External,
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116 | InteractionOrder -> {DMS, 1},
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117 | BlockName -> DMINPUTS,
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118 | TeX -> Subscript[g,PXd],
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119 | Description -> "Xd-Y0 pseudoscalar coupling",
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120 | Value -> 0. },
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121 |
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122 | gSd11 == {
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123 | ParameterType -> External,
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124 | InteractionOrder -> {DMS, 1},
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125 | BlockName -> DMINPUTS,
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126 | TeX -> Subscript[g,Sd11],
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127 | Description -> "d-Y0 scalar coupling",
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128 | Value -> 1. },
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129 |
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130 | gSu11 == {
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131 | ParameterType -> External,
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132 | InteractionOrder -> {DMS, 1},
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133 | BlockName -> DMINPUTS,
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134 | TeX -> Subscript[g,Su11],
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135 | Description -> "u-Y0 scalar coupling",
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136 | Value -> 1. },
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137 |
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138 | gSd22 == {
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139 | ParameterType -> External,
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140 | InteractionOrder -> {DMS, 1},
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141 | BlockName -> DMINPUTS,
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142 | TeX -> Subscript[g,Sd22],
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143 | Description -> "s-Y0 scalar coupling",
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144 | Value -> 1. },
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145 |
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146 | gSu22 == {
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147 | ParameterType -> External,
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148 | InteractionOrder -> {DMS, 1},
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149 | BlockName -> DMINPUTS,
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150 | TeX -> Subscript[g,Su22],
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151 | Description -> "c-Y0 scalar coupling",
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152 | Value -> 1. },
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153 |
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154 | gSd33 == {
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155 | ParameterType -> External,
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156 | InteractionOrder -> {DMS, 1},
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157 | BlockName -> DMINPUTS,
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158 | TeX -> Subscript[g,Sd33],
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159 | Description -> "b-Y0 scalar coupling",
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160 | Value -> 1. },
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161 |
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162 | gSu33 == {
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163 | ParameterType -> External,
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164 | InteractionOrder -> {DMS, 1},
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165 | BlockName -> DMINPUTS,
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166 | TeX -> Subscript[g,Su33],
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167 | Description -> "t-Y0 scalar coupling",
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168 | Value -> 1. },
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169 |
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170 | gPd11 == {
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171 | ParameterType -> External,
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172 | InteractionOrder -> {DMS, 1},
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173 | BlockName -> DMINPUTS,
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174 | TeX -> Subscript[g,Pd11],
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175 | Description -> "d-Y0 pseudoscalar coupling",
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176 | Value -> 0. },
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177 |
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178 | gPu11 == {
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179 | ParameterType -> External,
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180 | InteractionOrder -> {DMS, 1},
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181 | BlockName -> DMINPUTS,
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182 | TeX -> Subscript[g,Pu11],
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183 | Description -> "u-Y0 pseudoscalar coupling",
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184 | Value -> 0. },
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185 |
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186 | gPd22 == {
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187 | ParameterType -> External,
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188 | InteractionOrder -> {DMS, 1},
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189 | BlockName -> DMINPUTS,
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190 | TeX -> Subscript[g,Pd22],
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191 | Description -> "s-Y0 pseudoscalar coupling",
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192 | Value -> 0. },
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193 |
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194 | gPu22 == {
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195 | ParameterType -> External,
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196 | InteractionOrder -> {DMS, 1},
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197 | BlockName -> DMINPUTS,
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198 | TeX -> Subscript[g,Pu22],
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199 | Description -> "c-Y0 pseudoscalar coupling",
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200 | Value -> 0. },
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201 |
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202 | gPd33 == {
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203 | ParameterType -> External,
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204 | InteractionOrder -> {DMS, 1},
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205 | BlockName -> DMINPUTS,
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206 | TeX -> Subscript[g,Pd33],
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207 | Description -> "b-Y0 pseudoscalar coupling",
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208 | Value -> 0. },
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209 |
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210 | gPu33 == {
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211 | ParameterType -> External,
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212 | InteractionOrder -> {DMS, 1},
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213 | BlockName -> DMINPUTS,
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214 | TeX -> Subscript[g,Pu33],
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215 | Description -> "t-Y0 pseudoscalar coupling",
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216 | Value -> 0. },
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217 |
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218 | Lambda == {
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219 | ParameterType -> External,
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220 | BlockName -> DMINPUTS,
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221 | TeX -> \[CapitalLambda],
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222 | Description -> "cutoff scale",
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223 | Value -> 10000. },
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224 |
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225 | gSg == {
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226 | ParameterType -> External,
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227 | BlockName -> DMINPUTS,
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228 | InteractionOrder -> {DMS, 1},
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229 | TeX -> Subscript[g,Sg],
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230 | Description -> "g-Y0 scalar coupling",
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231 | Value -> 0. },
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232 |
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233 | gPg == {
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234 | ParameterType -> External,
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235 | BlockName -> DMINPUTS,
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236 | InteractionOrder -> {DMS, 1},
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237 | TeX -> Subscript[g,Pg],
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238 | Description -> "g-Y0 pseudoscalar coupling",
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239 | Value -> 0. }
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240 |
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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 | (* ***** Lagrangian ***** *)
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246 | (* ************************** *)
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247 |
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248 | L0X := 1/2 MXr gSXr Xr Xr Y0 +
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249 | MXc gSXc Xcbar Xc Y0 +
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250 | Xdbar.(gSXd + I gPXd Ga[5]).Xd Y0;
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251 |
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252 | L0SM := 1/Sqrt[2] *
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253 | ( ydo dbar.(gSd11 + I gPd11 Ga[5]).d Y0 +
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254 | yup ubar.(gSu11 + I gPu11 Ga[5]).u Y0 +
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255 | ys sbar.(gSd22 + I gPd22 Ga[5]).s Y0 +
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256 | yc cbar.(gSu22 + I gPu22 Ga[5]).c Y0 +
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257 | yb bbar.(gSd33 + I gPd33 Ga[5]).b Y0 +
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258 | yt tbar.(gSu33 + I gPu33 Ga[5]).t Y0 );
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259 |
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260 | L0SMg := 1/Lambda FS[G,mu,nu,a] (gSg FS[G,mu,nu,a] +
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261 | gPg Dual[FS][G,mu,nu,a]) Y0;
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262 |
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263 | L0DM := L0X + L0SM;
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