A parametrization of the CKM mixing matrix from a scheme of S3L x S3R symmetry breaking

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dc.creatorMondragon, A.
dc.creatorRodriguez-Jauregui, E.
dc.date1998-04-10
dc.date.accessioned2026-07-07T04:03:42Z
dc.date.available2026-07-07T04:03:42Z
dc.descriptionRecent interest in flavour or horizontal symmetry building (mass textures) has been spurred mainly by the large top mass and, hence, the strong hierarchy in quark masses. Recently, various symmetry breaking schemes have been proposed based on the discrete, non-Abelian group S3L x S3R, which is broken according to S3L x S3R > S3_diag > S2_diag. The group S3 treats three objects symmetrically, while the hierarchical nature of the Yukawa matrices is a consequence of the representation structure, 1 + 2, of S3, which treats the generations differently. Different ansaetze for the breaking of the sub-nuclear democracy give different Hermitian mass matrices, M, of the same modified Fritzsch type which differ in the numerical value of the ratio M_23/M_22. A fit to the experimentally determined absolute values of the elements of the CKM matrix gives bounds on the possible values of the CP violating phase and gives a clear indication on the preferred symmetry breaking scheme. A parametrization of the CKM mixing matrix in terms of four quark mass ratios and one CP violating phase in very good agreement with the absolute value of the experimentally determined values of the CKM matrix elements is obtained.
dc.descriptionPresented at the XXI Symposium on Nuclear Physics, Oaxtepec, Mexico, January 1998. 10 pages, 1 fig
dc.identifierhttps://arxiv.org/abs/hep-ph/9804267
dc.identifierhttp://arxiv.org/abs/hep-ph/9804267
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/47770
dc.subjectHigh Energy Physics - Phenomenology
dc.titleA parametrization of the CKM mixing matrix from a scheme of S3L x S3R symmetry breaking
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