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arXiv 0903.0125hep-ph
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A4跷跷板模型和形状优势

A4 See-Saw Models and Form Dominance

Mu-Chun Chen, Stephen F. King

摘要:

我们在(I型)跷跷板机制中引入了形式优势的概念,即一个特定的右手中微子质量本征态与一个特定的物理中微子质量本征态相关联,从而得到一个形式可对角化的有效中微子质量矩阵.形式优势,它允许一个任意的中微子质量谱,可以被看作是一个推广的约束顺序优势,只允许强层次的中微子质量。我们考虑的替代实现的跷跷板机制在最小的A4跷跷板模型,并表明,这种模型满足形式的优势,导致中微子质量和规则预测紧密间隔的中微子质量与正常或倒置的中微子质量排序。为了避免这种模型中固有的部分抵消,我们提出了自然形式的优势,其中不同的flavon与每个物理中微子质量本征态。

英文摘要:

We introduce the idea of Form Dominance in the (type I) see-saw mechanism, according to which a particular right-handed neutrino mass eigenstate is associated with a particular physical neutrino mass eigenstate, leading to a form diagonalizable effective neutrino mass matrix. Form Dominance, which allows an arbitrary neutrino mass spectrum, may be regarded as a generalization of Constrained Sequential Dominance which only allows strongly hierarchical neutrino masses. We consider alternative implementations of the see-saw mechanism in minimal A4 see-saw models and show that such models satisfy Form Dominance, leading to neutrino mass sum rules which predict closely spaced neutrino masses with a normal or inverted neutrino mass ordering. To avoid the partial cancellations inherent in such models we propose Natural Form Dominance, in which a different flavon is associated with each physical neutrino mass eigenstate.

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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