Re-evaluation of neutrino mixing pattern according to latest T2K result

Abstract

We re-evaluate neutrino mixing patterns according to the latest T2K result for a larger mixing angle ${\theta }_{13}$, and find that the PMNS mixing matrix has larger deviations from bimaximal (BM) and tribimaximal (TB) mixing patterns than previously expected. We also find that several schemes connecting PMNS and CKM mixing matrices can accommodate the latest T2K result nicely. As necessary updates to former works, we make new triminimal expansions of PMNS mixing matrix based on BM and TB mixing patterns. We also propose a new mixing pattern with a self-complementary relation between the mixing angles ${\theta }_{12}^{\nu }+{\theta }_{13}^{\nu }\simeq 45^{\circ }$, and find such a new mixing pattern in leading order can provide a rather good description of the data.

9 latex pages, no figure, final version for journal publication

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