Tri-bimaximal neutrino mixing from discrete subgroups of SU(3) and SO(3) family symmetry
Tri-bimaximal neutrino mixing from discrete subgroups of SU(3) and SO(3) family symmetry
It has recently been shown how tri-bimaximal neutrino mixing can be achieved, using the see-saw mechanism with constrained sequential dominance, through the vacuum alignment of a broken non-Abelian gauged family symmetry such as SO(3) or SU(3). Generalising the approach of Altarelli and Feruglio developed for an A4 model we show how the reduction of the underlying symmetry to a discrete subgroup of SO(3) or SU(3) renders this alignment a generic property of such models. This means near tri-bimaximal mixing can be quite naturally accommodated in a complete unified theory of quark and lepton masses.
153-157
de Medeiros Varzielas, I.
88859f2a-833c-4bdb-a70d-c12bb5cfe5e4
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Ross, G.G.
d58064ce-8a29-4bfc-b438-ef29b0a16bcb
11 January 2007
de Medeiros Varzielas, I.
88859f2a-833c-4bdb-a70d-c12bb5cfe5e4
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Ross, G.G.
d58064ce-8a29-4bfc-b438-ef29b0a16bcb
de Medeiros Varzielas, I., King, S.F. and Ross, G.G.
(2007)
Tri-bimaximal neutrino mixing from discrete subgroups of SU(3) and SO(3) family symmetry.
Physics Letters B, 644 (2-3), .
(doi:10.1016/j.physletb.2006.11.015).
Abstract
It has recently been shown how tri-bimaximal neutrino mixing can be achieved, using the see-saw mechanism with constrained sequential dominance, through the vacuum alignment of a broken non-Abelian gauged family symmetry such as SO(3) or SU(3). Generalising the approach of Altarelli and Feruglio developed for an A4 model we show how the reduction of the underlying symmetry to a discrete subgroup of SO(3) or SU(3) renders this alignment a generic property of such models. This means near tri-bimaximal mixing can be quite naturally accommodated in a complete unified theory of quark and lepton masses.
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Published date: 11 January 2007
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Local EPrints ID: 57165
URI: http://eprints.soton.ac.uk/id/eprint/57165
ISSN: 0370-2693
PURE UUID: 9b31e5ac-c026-4795-a9da-2ba1e07b7c51
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Date deposited: 14 Aug 2008
Last modified: 15 Mar 2024 11:05
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Author:
I. de Medeiros Varzielas
Author:
G.G. Ross
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