1210.5328 (Biswajit Adhikary et al.)

$θ_{13}$, $μτ$ symmetry breaking and neutrino Yukawa textures    [PDF]

Biswajit Adhikary, Ambar Ghosal, Probir Roy

Within the type-I see-saw and in the basis where charged lepton and heavy neutrino mass matrices are real and diagonal, $\mu\tau$ symmetric four and three zero neutrino Yukawa textures are perturbed by the most general $\mu\tau$ symmetry breaking terms treated to the lowest order. For reasonable values of those symmetry breaking parameters, current best-fit ranges of neutrino mass squared differences and mixing angles are shown to be accommodable, including a $\theta_{13}\sim 9^\circ$, provided the light neutrinos have an inverted mass ordering.

View original: http://arxiv.org/abs/1210.5328