Tri-bimaximal neutrino mixing from discrete subgroups of SU(3) and SO(3) family symmetry

被引:167
作者
Varzielas, I. de Medeiros
King, S. F. [1 ]
Ross, G. G.
机构
[1] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England
[2] Univ Oxford, Dept Phys Theoret Phys, Oxford OX1 3NP, England
关键词
D O I
10.1016/j.physletb.2006.11.015
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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 A(4) 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. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:153 / 157
页数:5
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