Changes between Version 10 and Version 11 of BSMCharacterisation
 Timestamp:
 Oct 14, 2015 5:21:33 PM (3 years ago)
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BSMCharacterisation
v10 v11 1 == The EFT mass basismodel ==1 == The BSM Characterisation model == 2 2 3 3 === Authors === 4 4 * Benjamin Fuks (IPHC Strasbourg / U. Strasbourg) 5 * Kentarou Mawatari ( Vrije Universiteit Brussel)6 * Emails: benjamin.fuks @ iphc.cnrs.fr, kentarou.mawatari @ vub.ac.be5 * Kentarou Mawatari (LPSC Grenoble) 6 * Emails: benjamin.fuks @ iphc.cnrs.fr, kentarou.mawatari @ lpsc.in2p3.fr 7 7 8 8 === Description of the model === 9 9 10 Th is is a model file based on the Standard Model (SM) effectivefieldtheory (EFT) Lagrangian in the mass basis. We adopt the notation of the Lagrangian in the Higgs basis proposal for LHC HXSWG and additionally consider all couplings external parameters that can be tuned according to the needs of the user. More information on the parameterization can be found on [https://twiki.cern.ch/twiki/bin/view/LHCPhysics/LHCHXSWGEFTbases the HXSWG page]. All the coefficients of the operators in the mass basis are hence implemented as external parameters in the !FeynRules implementation (i.e. independent parameters), although a large fraction of them are dependent as soon as one considers a gaugeinvariant set of independent operators in the SM EFT, as done e.g. in the Warsaw or SILH bases. The translation of the coefficients from those bases to the mass basis can be done by [http://www.sussex.ac.uk/tpp/research/heptools Rosetta], and an output parameter card from Rosetta can be used as an input card for FeynRules and for event generators (e.g. MadGraph5_aMC@NLO), with the massbasis (MB) model file. See more details in10 The BSM Characterisation (BSMC) model is an extension of the [/wiki/HiggsCharacterisation Higgs Characterisation (HC)] model and is based on the Standard Model (SM) effectivefieldtheory (EFT) Lagrangian in the masseigen basis. 11 11 12 * [arXiv:1508.05895] : A. Falkowksi, B. Fuks, K. Mawatari, K. Mimasu, F. Riva, V. Sanz, "Rosetta: an operator basis translator for Standard Model effective field theory". 12 We adopt the notation of the Lagrangian in the Higgs basis proposal for LHC HXSWG and additionally consider all couplings external parameters that can be tuned according to the needs of the user. More information on the parameterization can be found on [https://twiki.cern.ch/twiki/bin/view/LHCPhysics/LHCHXSWGEFTbases the HXSWG page]. All the coefficients of the operators in the BSMC model are hence implemented as external parameters in the !FeynRules implementation (i.e. independent parameters), although a large fraction of them are dependent as soon as one considers a gaugeinvariant set of independent operators in the SM EFT, as done e.g. in the Warsaw or SILH bases. The translation of the coefficients from those bases to the Higgs basis can be done by [http://www.sussex.ac.uk/tpp/research/heptools Rosetta], and an output parameter card from Rosetta can be used as an input card for FeynRules and for event generators (e.g. MadGraph5_aMC@NLO), with the BSMC model file. See more details in 13 13 14 This is an extension of the [/wiki/HiggsCharacterisation Higgs characterisation model].14 * [arXiv:1508.05895] : A. Falkowski, B. Fuks, K. Mawatari, K. Mimasu, F. Riva, V. Sanz, "Rosetta: an operator basis translator for Standard Model effective field theory". 15 15 16 16 … … 24 24 25 25 === Version updates === 26 * xx.10.2015  v2.0: 26 27 * 30.07.2015  v1.1: modification of the handling of the flavor structure. Update to the Higgs basis note of Aug/15. 27 28 * 14.07.2015  v1.0: release version (based on the Higgs basis note (Jun/14)).