New Lepton Family Symmetry and Neutrino Tribimaximal Mixing

Details New Lepton Family Symmetry and Neutrino Tribimaximal Mixing New Lepton Family Symmetry and Neutrino Tribimaximal Mixing

2007-01-02

arxiv.org/abs/hep-ph/0701016v2

Europhys.Lett.79:61001,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, no figure

Scientific paper

10.1209/0295-5075/79/61001

The newly proposed finite symmetry Sigma(81) is applied to the problem of neutrino tribimaximal mixing. The result is more satisfactory than those of previous models based on A_4 in that the use of auxiliary symmetries (or mechanisms) may be avoided. Deviations from the tribimaximal pattern are expected, but because of its basic structure, only tan^2 (theta_12) may differ significantly from 0.5 (say 0.45) with sin^2 (2 theta_23) remaining very close to one, and theta_13 very nearly zero.

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