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arXiv 2006.12019hep-ph
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中微子质量矩阵的新混合织构

New Hybrid Textures for Neutrino Mass Matrices

S. Dev, Desh Raj

摘要:

利用最近的中微子振荡数据,对具有两个纹理零和两个非零矩阵元相等的Majorana中微子质量矩阵$M_ν$的纹理结构进行了系统的研究.在42种可能的织构中,发现只有8种织构在3 $σ$ C. L.在这些现象学上可行的纹理,六个遵循正常的质量排序,而其余两个满足中微子质谱的逆质量排序。在数值分析中,我们对所有可行模式的可能空间进行了扫描。我们提出了三个混合角(太阳,反应堆和大气),轻子CP破坏,中微子质量标度和中微子双β衰变表明振荡参数之间的强相关性的每个允许模式的影响。最后给出了一种可行纹理的对称实现。

英文摘要:

We perform a systematic investigation of the texture structures of Majorana neutrino mass matrix $M_ν$ having two texture zeros and an equality between two nonzero matrix elements, in the light of recent neutrino oscillation data. Among forty-two possible textures, it is found that only eight textures are compatible with the current experimental data at 3$σ$ C.L. Out of these phenomenologically viable textures, six follow normal mass ordering while remaining two satisfy the inverted mass ordering of neutrino mass spectrum. In the numerical analysis, we carry out a scan over the possible space of all viable patterns. We present the implications of each allowed patterns for three mixing angles (solar, reactor and atmospheric), leptonic CP-violation, neutrino mass scale and the neutrinoless double beta decay indicating strong correlations between oscillation parameters. The symmetry realization of one of the viable textures is also presented.

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