Getting at large theta_13 with almost maximal theta_23 from tri-bimaximal mixing
High Energy Physics - Phenomenology
2011-08-12 v3
Abstract
We introduce a small correction term, \delta M_\nu, in the neutrino sector and examine whether a large \theta_13 and an almost maximal \theta_23 can simultaneously be obtained starting from the tri-bimaximal neutrino mixing. It is found that one can easily gain \theta_13 \simeq 10^\circ, which is favored by the recent T2K experiment, by taking account of the enhancement due to the degeneracy among three neutrino masses. We also find that (\delta M_\nu)_22=(\delta M_\nu)_33 is a key condition for \theta_23 \simeq 45^\circ.
Cite
@article{arxiv.1106.5211,
title = {Getting at large theta_13 with almost maximal theta_23 from tri-bimaximal mixing},
author = {Takeshi Araki},
journal= {arXiv preprint arXiv:1106.5211},
year = {2011}
}
Comments
v1:7 pages, 1 figure; v2:added references and short comments; v3:typos corrected, final version