Large theta_13 from a model with broken L_e-L_mu-L_tau symmetry

Details Large theta_13 from a model with broken L_e-L_mu-L_tau symmetry Large theta_13 from a model with broken L_e-L_mu-L_tau symmetry

2011-10-24

arxiv.org/abs/1110.5210v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 2 figures. v2: comments and references added, as published in JHEP

Scientific paper

Recent data in the neutrino sector point towards a relatively large value of the reactor angle, incompatible with a vanishing theta_ 13 at about 3 sigma. In order to explain such a result, we propose a SUSY model based on the broken L_e-L_mu-L_tau symmetry, where large deviations from the symmetric limit theta_12 = pi/4, tan(theta_23) \sim O(1) and theta_13 = 0 mainly come from the charged lepton sector. We show that a description of all neutrino data is possible if the charged lepton mass matrix has a special pattern of complex matrix elements.

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