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arXiv 1303.4394hep-ph
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最小超对称标准模型的A4扩展中的夸克-轻子质量关系和CKM混合

Quark-Lepton Mass Relation and CKM mixing in an A4 Extension of the Minimal Supersymmetric Standard Model

S. Morisi, M. Nebot, Ketan M. Patel, E. Peinado, J. W. F. Valle

摘要:

最近,在基于A4味对称性的超对称SU(3)_c \times SU(2)_L \times U(1)_Y模型中,预言了下型夸克和带电轻子之间有趣的质量关系。在这里,我们提出了一个简单的扩展,它提供了一个足够的夸克部门的全面描述。通过添加一对矢量类上夸克,我们展示了CKM项Vub,Vcb,Vtd和Vts是如何从幺正性的偏差中产生的。我们进行了分析,包括最相关的可观测的夸克部门,如振荡和罕见的衰变的K介子,Bd和Bs介子。在轻子部分,模型预测中微子质量的倒置等级,导致可能可观察到的无中微子双β衰变速率。

英文摘要:

An interesting mass relation between down type quarks and charged leptons has been recently predicted within a supersymmetric SU(3)_c \times SU(2)_L \times U(1)_Y model based on the A4 flavor symmetry. Here we propose a simple extension which provides an adequate full description of the quark sector. By adding a pair of vector-like up-quarks we show how the CKM entries Vub, Vcb, Vtd and Vts arise from deviations of the unitarity. We perform an analysis including the most relevant observables in the quark sector, such as oscillations and rare decays of Kaons, Bd and Bs mesons. In the lepton sector, model predicts an inverted hierarchy for the neutrino masses leading to a potentially observable rate of neutrinoless double beta decay.

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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