[1] | 1 | // SusyCouplings.h is a part of the PYTHIA event generator. |
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| 2 | // Copyright (C) 2012 Torbjorn Sjostrand. |
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| 3 | // Main authors of this file: N. Desai, P. Skands |
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| 4 | // PYTHIA is licenced under the GNU GPL version 2, see COPYING for details. |
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| 5 | // Please respect the MCnet Guidelines, see GUIDELINES for details. |
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| 6 | |
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| 7 | // Header file for setup of common SUSY couplings. |
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| 8 | |
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| 9 | #ifndef Pythia8_SusyCouplings_H |
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| 10 | #define Pythia8_SusyCouplings_H |
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| 11 | |
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| 12 | #include "PythiaComplex.h" |
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| 13 | #include "Settings.h" |
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| 14 | #include "StandardModel.h" |
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| 15 | #include "SusyLesHouches.h" |
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| 16 | |
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| 17 | namespace Pythia8 { |
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| 18 | |
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| 19 | class ParticleData; |
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| 20 | |
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| 21 | //========================================================================== |
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| 22 | |
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| 23 | // CoupSUSY |
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| 24 | // Auxiliary class to compute and store various SM and SUSY couplings. |
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| 25 | |
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| 26 | class CoupSUSY : public Couplings{ |
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| 27 | |
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| 28 | public: |
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| 29 | |
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| 30 | // Constructor |
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| 31 | CoupSUSY() {isInit=false; isNMSSM = false; isSUSY=true;} |
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| 32 | |
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| 33 | // Initialize |
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| 34 | void initSUSY(SusyLesHouches* slhaPtrIn, Settings* settingsPtrIn, |
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| 35 | ParticleData* particleDataPtrIn); |
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| 36 | |
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| 37 | // Status flag. Flag for NMSSM. |
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| 38 | bool isInit, isNMSSM; |
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| 39 | |
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| 40 | // Z and W pole masses and widths |
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| 41 | double mWpole, wWpole, mZpole, wZpole; |
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| 42 | |
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| 43 | // Running masses and weak mixing angle |
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| 44 | // (default to pole values if no running available) |
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| 45 | double mW, mZ, sin2W, sinW, cosW; |
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| 46 | |
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| 47 | // Tanbeta |
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| 48 | double tanb, cosb, sinb; |
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| 49 | |
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| 50 | //Higgs-sector parameters |
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| 51 | double muHiggs, alphaHiggs, mAHiggs; |
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| 52 | |
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| 53 | // ~qq~g couplings |
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| 54 | complex LsddG[7][4], RsddG[7][4]; |
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| 55 | complex LsuuG[7][4], RsuuG[7][4]; |
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| 56 | // Assume generation index for Squark. Translate if PDG code instead. |
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| 57 | complex getLsqqG(int iGenSq, int idQ) {if (abs(iGenSq) > 1000000) |
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| 58 | iGenSq = 3*(abs(iGenSq)/2000000) + (abs(iGenSq)%10+1)/2; |
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| 59 | return (abs(idQ)%2 == 0) ? LsuuG[iGenSq][abs(idQ)/2] |
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| 60 | : LsddG[iGenSq][(abs(idQ)+1)/2] ;} |
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| 61 | complex getRsqqG(int iGenSq, int idQ) {if (abs(iGenSq) > 1000000) |
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| 62 | iGenSq = 3*(abs(iGenSq)/2000000) + (abs(iGenSq)%10+1)/2; |
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| 63 | return (abs(idQ)%2 == 0) ? RsuuG[iGenSq][abs(idQ)/2] |
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| 64 | : RsddG[iGenSq][(abs(idQ)+1)/2] ;} |
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| 65 | |
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| 66 | // ~chi0~chi0Z couplings |
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| 67 | complex OLpp[6][6], ORpp[6][6]; |
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| 68 | |
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| 69 | // ~chi+~chi-Z couplings |
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| 70 | complex OLp[3][3], ORp[3][3]; |
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| 71 | |
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| 72 | // ~chi0~chi+W couplings |
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| 73 | complex OL[6][3], OR[6][3]; |
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| 74 | |
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| 75 | // qqZ couplings |
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| 76 | double LqqZ[7], RqqZ[7]; |
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| 77 | |
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| 78 | // ~q~qZ couplings |
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| 79 | complex LsdsdZ[7][7], RsdsdZ[7][7]; |
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| 80 | complex LsusuZ[7][7], RsusuZ[7][7]; |
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| 81 | complex getLsqsqZ(int idSq1, int idSq2) { |
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| 82 | if (abs(idSq1)%2 != abs(idSq2)%2) return complex(0.0,0.0); |
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| 83 | int iGen1 = 3*(abs(idSq1)/2000000) + (abs(idSq1)%10+1)/2; |
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| 84 | int iGen2 = 3*(abs(idSq2)/2000000) + (abs(idSq2)%10+1)/2; |
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| 85 | return (abs(idSq1)%2 == 0) ? LsusuZ[iGen1][iGen2] : LsdsdZ[iGen1][iGen2];} |
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| 86 | complex getRsqsqZ(int idSq1, int idSq2) { |
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| 87 | if (abs(idSq1)%2 != abs(idSq2)%2) return complex(0.0,0.0); |
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| 88 | int iGen1 = 3*(abs(idSq1)/2000000) + (abs(idSq1)%10+1)/2; |
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| 89 | int iGen2 = 3*(abs(idSq2)/2000000) + (abs(idSq2)%10+1)/2; |
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| 90 | return (abs(idSq1)%2 == 0) ? RsusuZ[iGen1][iGen2] : RsdsdZ[iGen1][iGen2];} |
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| 91 | |
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| 92 | // udW couplings |
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| 93 | complex LudW[4][4], RudW[4][4]; |
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| 94 | |
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| 95 | // ~u~dW couplings |
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| 96 | complex LsusdW[7][7], RsusdW[7][7]; |
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| 97 | |
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| 98 | // ~qq~chi0 couplings |
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| 99 | complex LsddX[7][4][6], RsddX[7][4][6]; |
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| 100 | complex LsuuX[7][4][6], RsuuX[7][4][6]; |
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| 101 | complex getLsqqX(int iSq, int idQ, int iNeut) {return (abs(idQ)%2 == 0) |
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| 102 | ? LsuuX[iSq][abs(idQ)/2][iNeut] : LsddX[iSq][(abs(idQ)+1)/2][iNeut] ;} |
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| 103 | complex getRsqqX(int iSq, int idQ, int iNeut) {return (abs(idQ)%2 == 0) |
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| 104 | ? RsuuX[iSq][abs(idQ)/2][iNeut] : RsddX[iSq][(abs(idQ)+1)/2][iNeut] ;} |
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| 105 | |
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| 106 | // ~du~chi+ couplings |
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| 107 | complex LsduX[7][4][3], RsduX[7][4][3]; |
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| 108 | |
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| 109 | // ~ud~chi+ couplings |
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| 110 | complex LsudX[7][4][3], RsudX[7][4][3]; |
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| 111 | |
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| 112 | //llZ couplings |
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| 113 | double LllZ[7], RllZ[7]; |
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| 114 | |
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| 115 | //lvW couplings |
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| 116 | complex LlvW[4], RlvW[4]; |
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| 117 | |
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| 118 | // ~l~lZ couplings |
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| 119 | complex LslslZ[7][7],RslslZ[7][7]; |
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| 120 | complex LsvsvZ[7][7],RsvsvZ[7][7]; |
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| 121 | |
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| 122 | // ~l~vW couplings |
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| 123 | complex LslsvW[7][7], RslsvW[7][7]; |
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| 124 | |
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| 125 | // ~ll~chi0 couplings |
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| 126 | complex LsvvX[7][4][6], RsvvX[7][4][6]; |
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| 127 | complex LsllX[7][4][6], RsllX[7][4][6]; |
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| 128 | |
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| 129 | // ~vl~chi+ couplings |
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| 130 | complex LsvlX[7][4][3], RsvlX[7][4][3]; |
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| 131 | |
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| 132 | // ~lv~chi+ couplings |
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| 133 | complex LslvX[7][4][3], RslvX[7][4][3]; |
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| 134 | |
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| 135 | // RPV couplings |
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| 136 | double rvLLE[4][4][4], rvLQD[4][4][4], rvUDD[4][4][4]; |
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| 137 | // Flags for RPV couplings |
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| 138 | bool isLLE, isLQD, isUDD; |
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| 139 | |
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| 140 | //Squark mixing matrix: needed for RPV |
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| 141 | complex Rusq[7][7], Rdsq[7][7]; |
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| 142 | |
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| 143 | // Return neutralino, chargino, sup, sdown and slepton flavour codes. |
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| 144 | int idNeut(int idChi); |
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| 145 | int idChar(int idChi); |
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| 146 | int idSup(int iSup); |
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| 147 | int idSdown(int iSdown); |
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| 148 | int idSlep(int iSlep); |
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| 149 | |
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| 150 | //Reverse lookup for neutralinos and charginos |
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| 151 | int typeNeut(int idPDG); |
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| 152 | int typeChar(int idPDG); |
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| 153 | |
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| 154 | // Return a particle name, given the PDG code. |
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| 155 | string getName(int pdgCode); |
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| 156 | |
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| 157 | // Pointer to SLHA instance |
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| 158 | // Used in SusyResonanceWidths for checking if decay table exists |
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| 159 | SusyLesHouches* slhaPtr; |
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| 160 | |
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| 161 | private: |
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| 162 | // Debug flag |
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| 163 | static const bool DEBUG; |
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| 164 | |
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| 165 | |
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| 166 | // Pointer to the settings database. |
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| 167 | Settings* settingsPtr; |
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| 168 | |
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| 169 | // Pointer to the particle data table. |
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| 170 | ParticleData* particleDataPtr; |
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| 171 | |
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| 172 | }; |
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| 173 | |
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| 174 | //========================================================================== |
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| 175 | |
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| 176 | } // end namespace Pythia8 |
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| 177 | |
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| 178 | #endif // Pythia8_SusyCouplings_H |
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