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arXiv · 1104.0055

Group Theory and Dynamics of Neutrino Mixing

C. S. Lam
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Abstract

There is a direct group-theoretical connection between neutrino mixing and horizontal symmetry that can be established without any dynamical input. Such a connection is reviewed and expanded in this article. For certain symmetry groups $\G$ including $A_4$ and $S_4$, it is shown that a generic $U(1)\x\G$ Higgs potential of a valon yields exactly the alignments dictated by the group-theoretic approach, but energy can now be used to discriminate different alignments. This mechanism possibly explains why starting from an $A_4$ group, the tribimaximal mixing matrix with an enhanced $S_4$ symmetry is more preferable than the one without it.

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C. S. Lam. 2011-05-25. Group Theory and Dynamics of Neutrino Mixing. https://doi.org/10.1103/physrevd.83.113002

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