Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/670
Título: Renormalization-group constraints on Yukawa alignment in multi-Higgs-doublet models
Autor: Ferreira, P. M.
Lavoura, L.
Silva, João P.
Palavras-chave: Multi-Higgs models
Renormalization group equations
lavor changing neutral currents
Data: 10-Mai-2010
Editora: Elsevier Science BV
Citação: Ferreira P M, Lavoura L, Silva J P.Renormalization-group constraints on Yukawa alignment in multi-Higgs-doublet models. Physics Letters B, 688 (4-5). 2010; 341-344.
Relatório da Série N.º: 4-5;
Resumo: We write down the renormalization-group equations for the Yukawa-coupling matrices in a general multi-Higgs-doublet model. We then assume that the matrices of the Yukawa couplings of the various Higgs doublets to right-handed fermions of fixed quantum numbers are all proportional to each other. We demonstrate that, in the case of the two-Higgs-doublet model, this proportionality is preserved by the renormalization-group running only in the cases of the standard type-I, II, X, and Y models. We furthermore show that a similar result holds even when there are more than two Higgs doublets: the Yukawa-coupling matrices to fermions of a given electric charge remain proportional under the renormalization-group running if and only if there is a basis for the Higgs doublets in which all the fermions of a given electric charge couple to only one Higgs doublet.
Peer review: yes
URI: http://hdl.handle.net/10400.21/670
ISSN: 0370-2693
Aparece nas colecções:ISEL - Física - Artigos

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