Correlation of normal neutrino mass ordering with upper octant ofθ23and third quadrant ofδvia RGE-inducedμ-τsymmetry breaking

  • The recent global analysis of three-flavor neutrino oscillation data indicates that the normal neutrino mass ordering is favored over the inverted one at the 3 σlevel, and the best-fit values of the largest neutrino mixing angle θ 23and the Dirac CP-violating phase δare located in the higher octant and third quadrant, respectively. We show that all these important issues can be naturally explained by the μ-τreflection symmetry breaking of massive neutrinos from a superhigh energy scale down to the electroweak scale owing to the one-loop renormalization-group equations (RGEs) in the minimal supersymmetric standard model (MSSM). The complete parameter space is explored for the first time in both the Majorana and Dirac cases, by allowing the smallest neutrino mass m 1and the MSSM parameter tan βto vary within their reasonable regions.
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Guo-yuan Huang, Zhi-zhong Xing and Jing-yu Zhu. Correlation of normal neutrino mass ordering with upper octant of θ 23and third quadrant of δvia RGE-induced μ-τsymmetry breaking[J]. Chinese Physics C, 2018, 42(12): 123108. doi: 10.1088/1674-1137/42/12/123108
Guo-yuan Huang, Zhi-zhong Xing and Jing-yu Zhu. Correlation of normal neutrino mass ordering with upper octant of θ 23and third quadrant of δvia RGE-induced μ-τsymmetry breaking[J]. Chinese Physics C, 2018, 42(12): 123108. doi:10.1088/1674-1137/42/12/123108 shu
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Received: 2018-07-26
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    Supported by the National Natural Science Foundation of China (11775231, 11775232)

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    Correlation of normal neutrino mass ordering with upper octant ofθ23and third quadrant ofδvia RGE-inducedμ-τsymmetry breaking

      Corresponding author:Guo-yuan Huang,
      Corresponding author:Zhi-zhong Xing,
      Corresponding author:Jing-yu Zhu,
    Fund Project:Supported by the National Natural Science Foundation of China (11775231, 11775232)

      Abstract:The recent global analysis of three-flavor neutrino oscillation data indicates that the normal neutrino mass ordering is favored over the inverted one at the 3σlevel, and the best-fit values of the largest neutrino mixing angleθ23and the Dirac CP-violating phaseδare located in the higher octant and third quadrant, respectively. We show that all these important issues can be naturally explained by theμ-τreflection symmetry breaking of massive neutrinos from a superhigh energy scale down to the electroweak scale owing to the one-loop renormalization-group equations (RGEs) in the minimal supersymmetric standard model (MSSM). The complete parameter space is explored for the first time in both the Majorana and Dirac cases, by allowing the smallest neutrino massm1and the MSSM parameter tanβto vary within their reasonable regions.

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