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Neutrino tri-bi-maximal mixing from a non-Abelian discrete family symmetry

De Medeiros Varzielas, I., King, S.F. and Ross, G.G. (2007) Neutrino tri-bi-maximal mixing from a non-Abelian discrete family symmetry Physics Letters B, 648, (2-3), pp. 201-206. (doi:10.1016/j.physletb.2007.03.009).

Record type: Article


The observed neutrino mixing, having a near maximal atmospheric neutrino mixing angle and a large solar mixing angle, is close to tri-bi-maximal. We argue that this structure suggests a family symmetric origin in which the magnitude of the mixing angles are related to the existence of a discrete non-Abelian family symmetry. We construct a model in which the family symmetry is the non-Abelian discrete group ?(27), a subgroup of SU(3) in which the tri-bi-maximal mixing directly follows from the vacuum structure enforced by the discrete symmetry. In addition to the lepton mixing angles, the model accounts for the observed quark and lepton masses and the CKM matrix. The structure is also consistent with an underlying stage of Grand Unification.

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Published date: 3 May 2007


Local EPrints ID: 57164
ISSN: 0370-2693
PURE UUID: 731d65da-9ef8-4047-9740-0fe41afab675

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Date deposited: 14 Aug 2008
Last modified: 17 Jul 2017 14:29

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Author: I. De Medeiros Varzielas
Author: S.F. King
Author: G.G. Ross

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