| 1 |
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| 2 | (***************** This is the FeynRules model file for the Higgs characterisation project ***********)
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| 3 | (*****************************************************************************************************)
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| 4 | (* It contains parts of existing FR model files: *)
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| 5 | (* 1) HEFT, author: C. Duhr (https://feynrules.irmp.ucl.ac.be/wiki/HiggsEffectiveTheory) *)
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| 6 | (* 2) Minimal Zprime, author: L. Basso (https://feynrules.irmp.ucl.ac.be/wiki/B-L-SM) *)
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| 7 | (* 3) RS, author: P. de Aquino (https://feynrules.irmp.ucl.ac.be/wiki/RSmodel) *)
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| 8 | (* *)
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| 9 | (* Please contact Priscila de Aquino (paquino@vub.ac.be) for bugs and/or further information *)
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| 10 | (* *)
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| 11 | (* THE UFO FILE HAS BEEN MODIFIED BY HAND: COUPLINGS OF THE X2 TO THE PHOTONS MODIFIED TO *)
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| 12 | (* Ka AND INTERACTIONS BETWEEN RESONANCES REMOVED. *)
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| 13 | (* *)
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| 14 | (*****************************************************************************************************)
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| 15 | FeynmanGauge = False;
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| 16 |
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| 17 | M$ModelName = "Higgs_Characterization";
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| 18 | M$Information = {
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| 19 | Authors -> "P. de Aquino, K. Mawatari",
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| 20 | Version -> "2.0",
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| 21 | Date -> "15. 04. 2013"
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| 22 | };
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| 23 |
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| 24 | (* ************************** *)
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| 25 | (* ***** Gauge groups ***** *)
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| 26 | (* ************************** *)
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| 27 | M$GaugeGroups = {
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| 28 | U11Y == {
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| 29 | Abelian -> True,
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| 30 | CouplingConstant -> g1,
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| 31 | GaugeBoson -> X1,
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| 32 | Charge -> Y}
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| 33 | };
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| 34 |
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| 35 | (* The loop coefficient from the HEFT model *)
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| 36 |
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| 37 | sert[x_] := 1+ 7/30 x + 2/21 x^2 + 26/525 x^3;
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| 38 |
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| 39 | serw[xw_, xt_] := 1 + xw * 66/235 +xw^2 * 228/1645 + xw^3 * 696/8225 +
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| 40 | xw^4 * 5248/90475 +xw^5 * 1280/29939+ xw^6 * 54528/1646645-
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| 41 | xt * 56/705 - xt^2 * 32/987;
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| 42 |
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| 43 | serp[x_] := 1 + x/3 + x^2 * 8/45 + x^3 * 4/35;
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| 44 |
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| 45 | (***** Setting for interaction order (as e.g. used by MadGraph 5) ******)
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| 46 |
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| 47 | M$InteractionOrderLimit = {
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| 48 | {QNP, 99}
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| 49 | };
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| 50 |
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| 51 | (***** Parameter list ******)
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| 52 |
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| 53 | M$Parameters = {
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| 54 |
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| 55 | kq == {
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| 56 | ParameterType -> External,
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| 57 | Value -> 1,
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| 58 | InteractionOrder -> {QNP, 1},
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| 59 | Description -> "Coupling with light quarks"},
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| 60 |
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| 61 | kg == {
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| 62 | ParameterType -> External,
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| 63 | Value -> 1,
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| 64 | InteractionOrder -> {QNP, 1},
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| 65 | Description -> "Coupling with gluons"},
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| 66 |
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| 67 | ka == {
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| 68 | ParameterType -> External,
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| 69 | Value -> 1,
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| 70 | InteractionOrder -> {QNP, 1},
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| 71 | Description -> "Coupling with photons"},
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| 72 |
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| 73 | kv == {
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| 74 | ParameterType -> External,
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| 75 | Value -> 1,
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| 76 | InteractionOrder -> {QNP, 1},
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| 77 | Description -> "Coupling with vector boson"},
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| 78 |
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| 79 | kl == {
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| 80 | ParameterType -> External,
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| 81 | Value -> 1,
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| 82 | InteractionOrder -> {QNP, 1},
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| 83 | Description -> "Coupling with leptons"},
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| 84 |
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| 85 | ka1 == {
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| 86 | ParameterType -> External,
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| 87 | Value -> 0,
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| 88 | InteractionOrder -> {QNP, 1},
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| 89 | Description -> "Coupling with photons"},
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| 90 |
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| 91 |
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| 92 | kg1 == {
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| 93 | ParameterType -> External,
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| 94 | Value -> 0,
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| 95 | InteractionOrder -> {QNP, 1},
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| 96 | Description -> "Coupling with gluons"},
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| 97 |
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| 98 | ka2 == {
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| 99 | ParameterType -> External,
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| 100 | Value -> 0,
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| 101 | InteractionOrder -> {QNP, 1},
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| 102 | Description -> "Coupling with photons"},
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| 103 |
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| 104 | kg2 == {
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| 105 | ParameterType -> External,
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| 106 | Value -> 0,
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| 107 | InteractionOrder -> {QNP, 1},
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| 108 | Description -> "Coupling with gluons"},
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| 109 |
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| 110 |
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| 111 | Lambda == {
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| 112 | ParameterType -> External,
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| 113 | Value -> 1000,
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| 114 | Description -> "Spin-2 effective scale"},
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| 115 |
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| 116 | ksm == {
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| 117 | ParameterType -> External,
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| 118 | Value -> 1,
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| 119 | InteractionOrder -> {QNP, 1},
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| 120 | Description -> "Lower dimensional operator switch"},
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| 121 |
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| 122 | GHaa == {TeX -> Subscript[g, Haa],
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| 123 | ParameterType -> Internal,
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| 124 | Value -> ee^2/4/Pi/(Pi*vev)*(47/18)*serw[(MX0/2/MW)^2, (MX0/2/MT)^2]},
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| 125 |
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| 126 | GAaa == {TeX -> Subscript[g, Aaa],
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| 127 | ParameterType -> Internal,
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| 128 | Value -> ee^2/4/Pi/(Pi*vev)},
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| 129 |
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| 130 | GHza == {TeX -> Subscript[g, Hza],
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| 131 | ParameterType -> Internal,
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| 132 | Value -> ee^2/4/Pi/(Pi*vev)},
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| 133 |
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| 134 | GAza == {TeX -> Subscript[g, Aza],
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| 135 | ParameterType -> Internal,
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| 136 | Value -> ee^2/4/Pi/(Pi*vev)},
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| 137 |
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| 138 | GHgg == {TeX -> Subscript[g, Hgg],
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| 139 | ParameterType -> Internal,
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| 140 | Value -> -gs^2/(4Pi(3Pi vev)) sert[(MX0/2/MT)^2] },
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| 141 |
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| 142 | GAgg == {TeX -> Subscript[g, Agg],
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| 143 | ParameterType -> Internal,
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| 144 | Value -> -gs^2/4/Pi/(2*Pi*vev)*serp[(MX0/2/MT)^2]},
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| 145 |
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| 146 | kHff == {TeX -> Subscript[k, Hf],
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| 147 | ParameterType -> External,
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| 148 | InteractionOrder -> {QNP, 1},
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| 149 | Value -> 1},
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| 150 |
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| 151 | kAff == {TeX -> Subscript[k, Af],
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| 152 | ParameterType -> External,
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| 153 | InteractionOrder -> {QNP, 1},
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| 154 | Value -> 1},
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| 155 |
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| 156 | kHaa == {TeX -> Subscript[k, Haa],
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| 157 | ParameterType -> External,
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| 158 | InteractionOrder -> {QNP, 1},
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| 159 | Value -> 1},
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| 160 |
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| 161 | kAaa == {TeX -> Subscript[k, Aaa],
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| 162 | ParameterType -> External,
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| 163 | InteractionOrder -> {QNP, 1},
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| 164 | Value -> 1},
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| 165 |
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| 166 | kHza == {TeX -> Subscript[k, Hza],
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| 167 | ParameterType -> External,
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| 168 | InteractionOrder -> {QNP, 1},
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| 169 | Value -> 1},
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| 170 |
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| 171 | kAza == {TeX -> Subscript[k, Aza],
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| 172 | ParameterType -> External,
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| 173 | InteractionOrder -> {QNP, 1},
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| 174 | Value -> 1},
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| 175 |
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| 176 | kHgg == {TeX -> Subscript[k, Hgg],
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| 177 | ParameterType -> External,
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| 178 | InteractionOrder -> {QNP, 1},
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| 179 | Value -> 1},
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| 180 |
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| 181 | kAgg == {TeX -> Subscript[k, Agg],
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| 182 | ParameterType -> External,
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| 183 | InteractionOrder -> {QNP, 1},
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| 184 | Value -> 1},
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| 185 |
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| 186 | kHvv == {TeX -> Subscript[k, Hvv],
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| 187 | ParameterType -> External,
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| 188 | InteractionOrder -> {QNP, 1},
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| 189 | Value -> 0},
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| 190 |
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| 191 | kAvv == {TeX -> Subscript[k, Avv],
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| 192 | ParameterType -> External,
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| 193 | InteractionOrder -> {QNP, 1},
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| 194 | Value -> 0},
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| 195 |
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| 196 | afu == {
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| 197 | ParameterType -> Internal,
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| 198 | Value -> -gs/(2 cw)(1/2-4*sw2/3)},
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| 199 |
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| 200 | bfu == {
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| 201 | ParameterType -> Internal,
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| 202 | Value -> -gs/(2 cw)(1/2)},
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| 203 |
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| 204 | kfau == {
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| 205 | ParameterType -> External,
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| 206 | Value -> 1,
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| 207 | InteractionOrder -> {QNP, 1}},
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| 208 |
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| 209 | kfbu == {
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| 210 | ParameterType -> External,
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| 211 | Value -> 1,
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| 212 | InteractionOrder -> {QNP, 1}},
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| 213 |
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| 214 | afd == {
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| 215 | ParameterType -> Internal,
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| 216 | Value -> -gs/(2 cw)(-1/2+2*sw2/3)},
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| 217 |
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| 218 | bfd == {
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| 219 | ParameterType -> Internal,
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| 220 | Value -> -gs/(2 cw)(-1/2)},
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| 221 |
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| 222 | kfad == {
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| 223 | ParameterType -> External,
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| 224 | Value -> 1,
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| 225 | InteractionOrder -> {QNP, 1}},
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| 226 |
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| 227 | kfbd == {
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| 228 | ParameterType -> External,
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| 229 | Value -> 1,
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| 230 | InteractionOrder -> {QNP, 1}},
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| 231 |
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| 232 | gwwz == {
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| 233 | ParameterType -> Internal,
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| 234 | Value -> -ee cw/sw,
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| 235 | Description -> "SM coupling"},
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| 236 |
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| 237 | kv1 == {
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| 238 | ParameterType -> External,
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| 239 | Value -> 0,
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| 240 | InteractionOrder -> {QNP, 1},
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| 241 | Description -> "Couplings of spin-1 to X"},
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| 242 |
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| 243 | kv2 == {
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| 244 | ParameterType -> External,
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| 245 | Value -> 0,
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| 246 | InteractionOrder -> {QNP, 1},
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| 247 | Description -> "Couplings of spin-1 to X"},
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| 248 |
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| 249 | kv3 == {
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| 250 | ParameterType -> External,
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| 251 | Value -> 0,
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| 252 | InteractionOrder -> {QNP, 1},
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| 253 | Description -> "Couplings of spin-1 to X"},
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| 254 |
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| 255 | kv4 == {
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| 256 | ParameterType -> External,
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| 257 | Value -> 0,
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| 258 | InteractionOrder -> {QNP, 1},
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| 259 | Description -> "Couplings of spin-1 to X"},
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| 260 |
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| 261 | kv5 == {
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| 262 | ParameterType -> External,
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| 263 | Value -> 0,
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| 264 | InteractionOrder -> {QNP, 1},
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| 265 | Description -> "Couplings of spin-1 to X"},
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| 266 |
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| 267 |
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| 268 | (*tha == {Value -> 2.88,
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| 269 | TeX -> Subscript[\[Theta], a],
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| 270 | Description -> "Scalar mixing angle"},*)
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| 271 |
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| 272 | ca == {ParameterType -> External,
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| 273 | Value -> 1,
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| 274 | TeX -> Subscript[c,a],
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| 275 | InteractionOrder -> {QNP, 0},
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| 276 | Description -> "Cos of the scalar mixing angle"},
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| 277 |
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| 278 | sa == {ParameterType -> Internal,
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| 279 | Value -> Sqrt[1-ca^2],
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| 280 | TeX -> Subscript[s,a],
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| 281 | InteractionOrder -> {QNP, 0},
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| 282 | Description -> "Sin of the scalar mixing angle"}
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| 283 | };
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| 284 |
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| 285 |
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| 286 | (***** Particle classes list ******)
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| 287 |
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| 288 | M$ClassesDescription = {
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| 289 | V[7] == {
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| 290 | ClassName -> X1,
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| 291 | SelfConjugate -> True,
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| 292 | Indices -> {},
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| 293 | Mass -> {MX1, 125.0},
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| 294 | Width -> {WX1, 0.07567860},
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| 295 | PropagatorLabel -> "X1",
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| 296 | ParticleName -> "X1",
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| 297 | PropagatorType -> Sine,
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| 298 | PropagatorArrow -> None,
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| 299 | PDG -> 5000002,
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| 300 | FullName -> "X1"},
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| 301 |
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| 302 | (*V[8] == {
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| 303 | ClassName -> X1p,
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| 304 | SelfConjugate -> True,
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| 305 | Indices -> {},
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| 306 | Mass -> {MX1p, 125.0},
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| 307 | Width -> {WX1p, 0.07567860},
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| 308 | PropagatorLabel -> "X1p",
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| 309 | ParticleName -> "X1p",
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| 310 | PropagatorType -> Sine,
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| 311 | PropagatorArrow -> None,
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| 312 | PDG -> 5000003,
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| 313 | FullName -> "X1m"},*)
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| 314 |
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| 315 | S[3] == {
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| 316 | ClassName -> X0x,
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| 317 | SelfConjugate -> True,
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| 318 | Mass -> {MX0,125},
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| 319 | Width -> {WX0, 0.07567860},
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| 320 | PDG -> 5000001,
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| 321 | ParticleName -> "X0"},
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| 322 |
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| 323 |
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| 324 | T[1] == {
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| 325 | ClassName -> X2,
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| 326 | SelfConjugate -> True,
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| 327 | ParticleName ->"X2",
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| 328 | PDG -> 5000004,
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| 329 | Symmetric -> True,
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| 330 | Mass -> {MX2, 125.0},
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| 331 | Width -> {WX2,0.07567860}}
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| 332 |
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| 333 | };
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| 334 |
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| 335 | (**************************************** Lagrangian *************************************)
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| 336 | (*****************************************************************************************)
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| 337 |
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| 338 | (* Spin-0 ********************************************************************************)
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| 339 | (*****************************************************************************************)
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| 340 |
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| 341 | LG0:= - 1/4 ( ca kHgg GHgg FS[G, mu, nu, b] FS[G, mu, nu, b] +
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| 342 | sa kAgg GAgg FS[G, mu, nu, b] Dual[FS][G, mu, nu, b]) X0x -
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| 343 | 1/4 ( ca kHaa GHaa (del[A[nu], mu] - del[A[mu], nu])(del[A[nu], mu] - del[A[mu], nu]) +
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| 344 | sa kAaa GAaa (del[A[nu], mu] - del[A[mu], nu])(1/2)Eps[mu,nu,rho,sig](del[A[sig], rho]-del[A[rho], sig])) X0x -
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| 345 | 1/4 ( ca kHza GHza (del[Z[nu], mu] - del[Z[mu], nu])(del[A[nu], mu] - del[A[mu], nu]) +
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| 346 | sa kAza GAza (del[Z[nu], mu] - del[Z[mu], nu])(1/2)Eps[mu,nu,rho,sig](del[A[sig], rho]-del[A[rho], sig])) X0x -
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| 347 | 1/4( ca kHvv ((del[Z[nu], mu] - del[Z[mu], nu])(del[Z[nu], mu] - del[Z[mu], nu]) +
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| 348 | (del[Wbar[nu], mu] - del[Wbar[mu], nu])(del[W[nu], mu] - del[W[mu], nu])) +
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| 349 | sa kAvv ((del[Z[nu], mu] - del[Z[mu], nu])(1/2)Eps[mu,nu,rho,sig](del[Z[sig], rho] - del[Z[rho], sig]) +
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| 350 | (del[Wbar[nu], mu] - del[Wbar[mu], nu])(1/2)Eps[mu,nu,rho,sig](del[W[sig], rho] - del[W[rho], sig]))) X0x;
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| 351 |
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| 352 |
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| 353 | (*****************************************************************************************)
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| 354 |
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| 355 | (* RS ************************************************************************************)
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| 356 | (*****************************************************************************************)
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| 357 |
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| 358 |
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| 359 | (********************** Gravitational Coupling ******************************************)
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| 360 | (********************** Defining the cov derivatives *************************************)
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| 361 |
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| 362 | covdelU[field_, mu_] :=
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| 363 | Module[{j, a}, del[field, mu] - I gs G[mu, a] T[a].field
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| 364 | - I ee/cw 4/3 B[mu]/2 ProjP.field - I ee/cw/3 B[mu]/2 ProjM.field - I ee/sw/2 ProjM.field Wi[mu,3]];
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| 365 |
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| 366 | covdelD[field_, mu_] :=
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| 367 | Module[{j, a}, del[field, mu] - I gs G[mu, a] T[a].field
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| 368 | + I ee/cw 2/3 B[mu]/2 ProjP.field - I ee/cw/3 B[mu]/2 ProjM.field + I ee/sw/2 ProjM.field Wi[mu,3]];
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| 369 |
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| 370 | covdelE[field_, mu_] :=
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| 371 | Module[{j, a}, del[field, mu]
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| 372 | + I ee/cw 2 B[mu]/2 ProjP.field + I ee/cw B[mu]/2 ProjM.field + I ee/sw/2 ProjM.field Wi[mu,3]];
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| 373 |
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| 374 | (* Version 2.0 => fixed a sign problem and a factor 2 missing in the above derivative *)
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| 375 |
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| 376 | covdelN[field_, mu_] :=
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| 377 | Module[{j, a}, del[field, mu] + I ee/cw B[mu]/2 ProjM.field - I ee/sw/2 ProjM.field Wi[mu,3]];
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| 378 |
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| 379 | (******************** Defining the field strenght tensors:********************************)
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| 380 |
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| 381 | FG[mu_,nu_,a1_,a2_,a3_] := del[G[nu, a1], mu] - del[G[mu, a1], nu] + gs f[a1, a2, a3] G[mu, a2] G[nu, a3];
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| 382 |
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| 383 | FA[mu_,nu_] := del[B[nu], mu] - del[B[mu], nu];
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| 384 |
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| 385 | FW[mu_,nu_,i1_,i2_,i3_] := del[Wi[nu, i1], mu] - del[Wi[mu, i1], nu] + ee/sw Eps[i1, i2, i3] Wi[mu, i2] Wi[nu, i3];
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| 386 |
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| 387 | (******************* Defining the energy-momentum tensor T[mu,nu] ************************)
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| 388 |
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| 389 | (* Gauge bosons *)
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| 390 |
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| 391 | TG[mu_,nu_]:= ( - ME[mu,nu]. (-1/4 (-kv) FA[rho, sig] FA[rho,sig] - 1/4 (-kv)FW[rho,sig,i1,i2,i3] FW[rho,sig, i1,i4,i5] - 1/4 (-kg)FG[rho,sig,a1,a2,a3] FG[rho,sig, a1,a4,a5])
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| 392 | - (-kv)FA[mu,rho] FA[nu,rho] - (-kv)FW[mu,rho,i1,i2,i3] FW[nu,rho, i1,i4,i5] - (-kg) FG[mu,rho,a1,a2,a3] FG[nu,rho, a1,a2,a3]);
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| 393 | (* Fermions *)
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| 394 |
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| 395 | TF[mu_,nu_] := (-ME[mu,nu] ((-kq) (I uqbar.(Ga[rho].covdelU[uq, rho]) -1/2 del[I uqbar.Ga[rho].uq, rho]
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| 396 | + I dqbar.(Ga[rho].covdelD[dq, rho]) -1/2 del[I dqbar.Ga[rho].dq, rho])
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| 397 | +(-kl)(+ I vlbar.(Ga[rho].covdelN[vl, rho]) -1/2 del[I vlbar.Ga[rho].vl, rho]
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| 398 | + I lbar.(Ga[rho].covdelE[l, rho] ) -1/2 del[I lbar.Ga[rho].l, rho])
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| 399 |
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| 400 | + ee/sw/Sqrt[2] ((-kq) uqbar.Ga[rho].ProjM.CKM.dq W[rho] + (-kq) dqbar.Ga[rho].ProjM.HC[CKM].uq Wbar[rho]
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| 401 | + (-kl) vlbar.Ga[rho].ProjM.l W[rho] + (-kq) lbar.Ga[rho].ProjM.vl Wbar[rho]) )
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| 402 | + ( (-kq) (I/2 uqbar.Ga[mu].covdelU[uq, nu] - 1/4 I del[uqbar.Ga[nu].uq, mu]
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| 403 | + I/2 uqbar.Ga[nu].covdelU[uq, mu] - 1/4 I del[uqbar.Ga[mu].uq, nu]
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| 404 | + I/2 dqbar.Ga[mu].covdelD[dq, nu] - 1/4 I del[dqbar.Ga[nu].dq, mu]
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| 405 | + I/2 dqbar.Ga[nu].covdelD[dq, mu] - 1/4 I del[dqbar.Ga[mu].dq, nu])+
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| 406 | (-kl) (I/2 vlbar.Ga[mu].covdelN[vl, nu] - 1/4 I del[vlbar.Ga[nu].vl, mu]
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| 407 | + I/2 vlbar.Ga[nu].covdelN[vl, mu] - 1/4 I del[vlbar.Ga[mu].vl, nu]
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| 408 | + I/2 lbar.Ga[mu].covdelE[l, nu] - 1/4 I del[lbar.Ga[nu].l, mu]
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| 409 | + I/2 lbar.Ga[nu].covdelE[l, mu] - 1/4 I del[lbar.Ga[mu].l, nu]) )
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| 410 |
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| 411 | + ee/sw/2/Sqrt[2] ((-kq)(uqbar.Ga[mu].ProjM.CKM.dq W[nu] + dqbar.Ga[mu].ProjM.HC[CKM].uq Wbar[nu]
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| 412 | + uqbar.Ga[nu].ProjM.CKM.dq W[mu] + dqbar.Ga[nu].ProjM.HC[CKM].uq Wbar[mu])
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| 413 | + (-kl)(vlbar.Ga[mu].ProjM.l W[nu] + lbar.Ga[mu].ProjM.vl Wbar[nu]
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| 414 | + vlbar.Ga[nu].ProjM.l W[mu] + lbar.Ga[nu].ProjM.vl Wbar[mu])));
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| 415 |
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| 416 | TFAxial[mu_,nu_] := (-ME[mu,nu] ((-kq)(I uqbar.(Ga[rho].Ga[5].covdelU[uq, rho]) -1/2 del[I uqbar.Ga[rho].Ga[5].uq, rho]
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| 417 | + I dqbar.(Ga[rho].Ga[5].covdelD[dq, rho]) -1/2 del[I dqbar.Ga[rho].Ga[5].dq, rho])
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| 418 | + (-kl)( I vtbar.(Ga[rho].Ga[5].covdelN[vt, rho]) -1/2 del[I vtbar.Ga[rho].Ga[5].vt, rho]
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| 419 | + I lbar.(Ga[rho].Ga[5].covdelE[l, rho] ) -1/2 del[I lbar.Ga[rho].Ga[5].l, rho])
|
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| 420 |
|
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| 421 | + ee/sw/Sqrt[2] (-kq uqbar.Ga[rho].Ga[5].ProjM.CKM.dq W[rho] + (-kq) dqbar.Ga[rho].Ga[5].ProjM.HC[CKM].uq Wbar[rho]
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| 422 | + (-kl) vtbar.Ga[rho].Ga[5].ProjM.l W[rho] + (-kl) lbar.Ga[rho].Ga[5].ProjM.vt Wbar[rho]) )
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| 423 | + ((-kq)(I/2 uqbar.Ga[mu].Ga[5].covdelU[uq, nu] - 1/4 I del[uqbar.Ga[nu].Ga[5].uq, mu]
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| 424 | + I/2 uqbar.Ga[nu].Ga[5].covdelU[uq, mu] - 1/4 I del[uqbar.Ga[mu].Ga[5].uq, nu]
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| 425 | + I/2 dqbar.Ga[mu].Ga[5].covdelD[dq, nu] - 1/4 I del[dqbar.Ga[nu].Ga[5].dq, mu]
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| 426 | + I/2 dqbar.Ga[nu].Ga[5].covdelD[dq, mu] - 1/4 I del[dqbar.Ga[mu].Ga[5].dq, nu])
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| 427 | + (-kl) (I/2 vtbar.Ga[mu].Ga[5].covdelN[vt, nu] - 1/4 I del[vtbar.Ga[nu].Ga[5].vt, mu]
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| 428 | + I/2 vtbar.Ga[nu].Ga[5].covdelN[vt, mu] - 1/4 I del[vtbar.Ga[mu].Ga[5].vt, nu]
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|---|
| 429 | + I/2 lbar.Ga[mu].Ga[5].covdelE[l, nu] - 1/4 I del[lbar.Ga[nu].Ga[5].l, mu]
|
|---|
| 430 | + I/2 lbar.Ga[nu].Ga[5].covdelE[l, mu] - 1/4 I del[lbar.Ga[mu].Ga[5].l, nu]))
|
|---|
| 431 |
|
|---|
| 432 | + ee/sw/2/Sqrt[2] ((-kq) (uqbar.Ga[mu].Ga[5].ProjM.CKM.dq W[nu] + dqbar.Ga[mu].Ga[5].ProjM.HC[CKM].uq Wbar[nu]
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| 433 | + uqbar.Ga[nu].Ga[5].ProjM.CKM.dq W[mu] + dqbar.Ga[nu].Ga[5].ProjM.HC[CKM].uq Wbar[mu])
|
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| 434 | +(-kl) (vtbar.Ga[mu].Ga[5].ProjM.l W[nu] + lbar.Ga[mu].Ga[5].ProjM.vt Wbar[nu]
|
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| 435 | + vtbar.Ga[nu].Ga[5].ProjM.l W[mu] + lbar.Ga[nu].Ga[5].ProjM.vt Wbar[mu])));
|
|---|
| 436 |
|
|---|
| 437 |
|
|---|
| 438 | (* Definitions for Higgs and Yukawa *)
|
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| 439 |
|
|---|
| 440 | TH[mu_, nu_] := Block[{ii,mu, feynmangaugerules},
|
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| 441 | feynmangaugerules = If[Not[FeynmanGauge], {G0|GP|GPbar ->0}, {}];
|
|---|
| 442 |
|
|---|
| 443 | ExpandIndices[-ME[mu,nu].(DC[PhiHbar[ii],rho] DC[PhiH[ii],rho])+DC[PhiHbar[ii],mu] DC[PhiH[ii],nu]+DC[PhiHbar[ii],nu] DC[PhiH[ii],mu], FlavorExpand->{SU2D,SU2W}]/.feynmangaugerules
|
|---|
| 444 | ];
|
|---|
| 445 |
|
|---|
| 446 | (* Yukawa *)
|
|---|
| 447 |
|
|---|
| 448 | TYuk := Block[{sp,ii,jj,cc,ff1,ff2,ff3,yuk,feynmangaugerules},
|
|---|
| 449 | feynmangaugerules = If[Not[FeynmanGauge], {G0|GP|GPbar ->0}, {}];
|
|---|
| 450 |
|
|---|
| 451 | yuk = ExpandIndices[
|
|---|
| 452 | -yd[ff2, ff3] CKM[ff1, ff2] QLbar[sp, ii, ff1, cc].dR [sp, ff3, cc] PhiH[ii] -
|
|---|
| 453 | yl[ff1, ff3] LLbar[sp, ii, ff1].lR [sp, ff3] PhiH[ii] -
|
|---|
| 454 | yu[ff1, ff2] QLbar[sp, ii, ff1, cc].uR [sp, ff2, cc] PhiHbar[jj] Eps[ii, jj], FlavorExpand -> SU2D];
|
|---|
| 455 | yuk = yuk /. { CKM[a_, b_] Conjugate[CKM[a_, c_]] -> IndexDelta[b, c], CKM[b_, a_] Conjugate[CKM[c_, a_]] -> IndexDelta[b, c]};
|
|---|
| 456 | yuk+HC[yuk]/.feynmangaugerules
|
|---|
| 457 | ];
|
|---|
| 458 |
|
|---|
| 459 | TY[mu_,nu_] := -ME[mu,nu](TYuk + HC[TYuk]);
|
|---|
| 460 |
|
|---|
| 461 |
|
|---|
| 462 | (* Gauge fixing term is here because Madgraph takes the Feynman gauge for massless gauge boson propagators and unitary gauge for massive gauge boson propagators. *)
|
|---|
| 463 |
|
|---|
| 464 | TGF[mu_, nu_]:= (-ME[mu,nu].( (-kg)del[del[G[sig, a1], sig], rho].G[rho, a1] + (-ka)del[del[A[sig], sig], rho].A[rho] +
|
|---|
| 465 | 1/2 (-kg)del[G[rho, a1], rho].del[G[rho, a1], rho] + 1/2 (-ka)del[A[rho], rho].del[A[rho], rho])
|
|---|
| 466 | + ((-kg)del[del[G[rho, a1], rho], mu].G[nu, a1] + (-ka)del[del[A[rho], rho], mu].A[nu] +(-kg)
|
|---|
| 467 | del[del[G[rho, a1], rho], nu].G[mu, a1] + (-ka)del[del[A[rho], rho], nu].A[mu] ));
|
|---|
| 468 |
|
|---|
| 469 | (******************************* Writing the lagrangian *********************************)
|
|---|
| 470 |
|
|---|
| 471 | LagG := 1/Lambda (X2[mu,nu] (TG[mu,nu] + TGF[mu,nu])); (*ka,kg,kv are defined with TG[mu,nu]*)
|
|---|
| 472 | LagF := 1/Lambda(X2[mu,nu] TF[mu,nu]);
|
|---|
| 473 | LagHY := -kq/Lambda(X2[mu,nu] TY[mu,nu]) -kv/Lambda(X2[mu,nu] TH[mu,nu]);
|
|---|
| 474 | LagRS := LagG + LagF + LagHY;
|
|---|
| 475 |
|
|---|
| 476 | (********** Beta implementation of the 2+ (higher dimensional) and 2- resonance ***********)
|
|---|
| 477 |
|
|---|
| 478 | TA2m[mu_, nu_] := (-del[del[(-1/4 FA[rho, sig] FA[rho, sig]), mu], nu]);
|
|---|
| 479 | TA2mAxial[mu_, nu_] := (-del[del[(-1/8 FA[rho, sig] Eps[rho, sig, alpha, beta] FA[alpha, beta]), mu], nu]);
|
|---|
| 480 |
|
|---|
| 481 | TW2m[mu_, nu_] := (-del[del[(-1/4 FW[rho, sig, i1, i2, i3] FW[rho, sig, i1, i4, i5]), mu], nu]);
|
|---|
| 482 | TW2mAxial[mu_, nu_] := (-del[del[(-1/8 FW[rho, sig, i1, i2, i3] Eps[rho, sig, alpha, beta] FW[alpha, beta, i1, i4, i5]), mu], nu]);
|
|---|
| 483 |
|
|---|
| 484 | TG2m[mu_, nu_] := (-del[del[(-1/4 FG[rho, sig, a1, a2, a3] FG[rho, sig, a1, a4, a5]),mu],nu]);
|
|---|
| 485 | TG2mAxial[mu_, nu_] := (-del[del[(-1/8 FG[rho, sig, a1, a2, a3] Eps[rho, sig, alpha, beta] FG[alpha, beta, a1, a4, a5]), mu], nu]);
|
|---|
| 486 |
|
|---|
| 487 | LG2m := X2[mu,nu] (-ka2/Lambda^3 TA2mAxial[mu,nu] -kv2/Lambda^3 TW2mAxial[mu,nu] -kg2/Lambda^3 TG2mAxial[mu,nu]);
|
|---|
| 488 | LGHD := X2[mu,nu] (-ka1/Lambda^3 TA2m[mu,nu] -kv1/Lambda^3 TW2m[mu,nu] -kg1/Lambda^3 TG2m[mu,nu]);
|
|---|
| 489 |
|
|---|
| 490 | (*****************************************************************************************)
|
|---|
| 491 | (* Spin-1 - vector and pseudo-vector *****************************************************)
|
|---|
| 492 | (*****************************************************************************************)
|
|---|
| 493 |
|
|---|
| 494 | (* Defining one arbitrary coupling of the spin-1 with W+ W- *)
|
|---|
| 495 |
|
|---|
| 496 | LBprightPsVec =
|
|---|
| 497 | kfbu bfu X1[mu] uqbar[s,n,i].Ga[mu,s,v].Ga[5,v,x].ProjP[x,r].uq[r,n,i] +
|
|---|
| 498 | kfbd bfd X1[mu] dqbar[s,n,i].Ga[mu,s,v].Ga[5,v,x].ProjP[x,r].dq[r,n,i];
|
|---|
| 499 |
|
|---|
| 500 | LBpleftPsVec =
|
|---|
| 501 | kfbu bfu X1[mu] uqbar[s,n,i].Ga[mu,s,v].Ga[5,v,x].ProjM[x,r].uq[r,n,i] +
|
|---|
| 502 | kfbd bfd X1[mu] dqbar[s,n,i].Ga[mu,s,v].Ga[5,v,x].ProjM[x,r].dq[r,n,i];
|
|---|
| 503 |
|
|---|
| 504 | LBprightVec =
|
|---|
| 505 | kfau afu X1[mu] uqbar[s,n,i].Ga[mu,s,v].ProjP[v,r].uq[r,n,i] +
|
|---|
| 506 | kfad afd X1[mu] dqbar[s,n,i].Ga[mu,s,v].ProjP[v,r].dq[r,n,i];
|
|---|
| 507 |
|
|---|
| 508 | LBpleftVec =
|
|---|
| 509 | kfau afu X1[mu] uqbar[s,n,i].Ga[mu,s,v].ProjM[v,r].uq[r,n,i] +
|
|---|
| 510 | kfad afd X1[mu] dqbar[s,n,i].Ga[mu,s,v].ProjM[v,r].dq[r,n,i];
|
|---|
| 511 |
|
|---|
| 512 |
|
|---|
| 513 | LF= LBprightVec + LBpleftVec + LBprightPsVec + LBpleftPsVec;
|
|---|
| 514 |
|
|---|
| 515 |
|
|---|
| 516 | LWW=( I kv1 gwwz(del[Wbar[nu], mu] - del[Wbar[mu], nu]) W[mu] X1[nu] - I kv1 gwwz Wbar[mu] X1[nu] (del[W[nu], mu] - del[W[mu], nu])
|
|---|
| 517 | +I kv2 gwwz Wbar[mu]W[nu]FS[X1,mu,nu]
|
|---|
| 518 | -kv3 Wbar[mu]W[nu](del[X1[nu],mu]+del[X1[mu],nu])
|
|---|
| 519 | -kv5 Eps[mu,nu,rho,sig](Wbar[mu]del[W[nu],rho]-del[Wbar[mu],rho]W[nu])X1[sig]
|
|---|
| 520 | +I kv4 Wbar[mu]W[nu](1/2)Eps[mu,nu,rho,sig](del[X1[sig],rho]-del[X1[rho],sig])
|
|---|
| 521 | );
|
|---|
| 522 | LZZ= -kv3 X1[mu]del[Z[mu],nu]Z[nu]- kv5 Eps[mu,nu,rho,sig]X1[mu]Z[nu]del[Z[sig],rho];
|
|---|
| 523 |
|
|---|
| 524 | (* LWW and LZZ based on the reference: K.Hagiwara et al, Nucl. Phys. B282 (1987) 253-307 *)
|
|---|
| 525 | (*****************************************************************************************)
|
|---|
| 526 |
|
|---|
| 527 | Ltot:= LSM + LF +LagRS + LG0 + LWW + LZZ + LGHD + LG2m;
|
|---|
| 528 |
|
|---|