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arXiv · 1106.5211

Getting at large theta_13 with almost maximal theta_23 from tri-bimaximal mixing

Takeshi Araki
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Abstract

We introduce a small correction term, δM_ν, in the neutrino sector and examine whether a large θ_13 and an almost maximal θ_23 can simultaneously be obtained starting from the tri-bimaximal neutrino mixing. It is found that one can easily gain θ_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 (δM_ν)_22=(δM_ν)_33 is a key condition for θ_23 \simeq 45^\circ.

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Takeshi Araki. 2011-08-02. Getting at large theta_13 with almost maximal theta_23 from tri-bimaximal mixing. https://doi.org/10.1103/physrevd.84.037301

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