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Large θ 13 from finite quantum corrections in quasi-degenerate neutrino mass spectrum

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Abstract

We study finite quantum corrections for several well known neutrino mixing matrices and find that it is hard to account for the large value of θ 13 recently reported by T2K and MINOS. To nicely reproduce all experimentally favored neutrino mixing angles and masses, we propose a new neutrino mixing pattern.

We also demonstrate a simple realization by slightly extending the standard model to illustrate the quantum corrections.

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Authors and Affiliations

  1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China

    Takeshi Araki

  2. Department of Physics, National Tsing Hua University, Hsinchu, 300, Taiwan

    Chao-Qiang Geng

  3. Physics Division, National Center for Theoretical Sciences, Hsinchu, 300, Taiwan

    Chao-Qiang Geng

Authors
  1. Takeshi Araki
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  2. Chao-Qiang Geng
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Correspondence to Takeshi Araki.

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Araki, T., Geng, CQ. Large θ 13 from finite quantum corrections in quasi-degenerate neutrino mass spectrum. J. High Energ. Phys. 2011, 139 (2011). https://doi.org/10.1007/JHEP09(2011)139

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