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arXiv 1009.2371hep-ph
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中微子质量和Cabibbo膨胀

Neutrino masses and the Cabibbo expansion

Fu-Sin Ling

摘要:

假设$λ= \sin θ_C$(其中$θ_C$是Cabibbo角)在中微子扇区中和在夸克扇区中一样是一个有用的膨胀参数,我们采用自下而上的方法来重建可能的中微子质量矩阵模式.对这些Cabibbo结构的数值分析表明,中微子振荡数据在统计学上支持一个倒置的层次谱。然后,我们讨论如何明显矛盾的质量和混合数据的夸克,带电轻子和中微子可以适合在一个统一的观点。我们表明,大的混合角可以出现通过跷跷板机制,即使中微子狄拉克质量矩阵有层次的本征值和小的混合角。最后,它表明,重马约拉纳质量矩阵的形式可能指向额外的维度理论。

英文摘要:

We adopt a bottom-up approach to reconstruct the possible neutrino mass matrix patterns, in the hypothesis that $λ= \sin θ_C$, where $θ_C$ is the Cabibbo angle, is a useful expansion parameter in the neutrino sector as it is in the quark sector. A numerical analysis of these Cabibbo structures shows that an inverted hierarchy spectrum is statistically favored by the neutrino oscillation data. We then discuss how apparently conflicting mass and mixing data for quarks, charged leptons and neutrinos can fit in a unified perspective. We show that large mixing angles can appear through the seesaw mechanism, even if the neutrino Dirac mass matrix has hierarchical eigenvalues and small mixing angles. Finally, it is shown that the form of the heavy Majorana mass matrix may point towards theories with extra-dimensions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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