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

Understand

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.