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

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Abstract

We re-evaluate neutrino mixing patterns according to the latest T2K result for a larger mixing angle θ 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 θ ν12 + θ ν13 ⋍ 45°, and find such a new mixing pattern in leading order can provide a rather good description of the data.

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Authors and Affiliations

  1. School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871, Beijing, China

    Ya-juan Zheng & Bo-Qiang Ma

  2. Department of Physics, Shandong University, 250100, Shandong, China

    Ya-juan Zheng

  3. Center for High Energy Physics, Peking University, 100871, Beijing, China

    Bo-Qiang Ma

Authors
  1. Ya-juan Zheng
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  2. Bo-Qiang Ma
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Correspondence to Bo-Qiang Ma.

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Zheng, Yj., Ma, BQ. Re-evaluation of neutrino mixing pattern according to latest T2K result. Eur. Phys. J. Plus 127, 7 (2012). https://doi.org/10.1140/epjp/i2012-12007-1

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  • DOI: https://doi.org/10.1140/epjp/i2012-12007-1

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