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arXiv 2406.01696hep-phhep-exhep-th
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来自味解构的中微子无政府状态

Neutrino Anarchy from Flavor Deconstruction

Admir Greljo, Gino Isidori

AI总结:

本文探讨了在带有右手中微子的通用模型中,中微子无政府状态如何由味解构产生,发现将解构应用于特定子群可使跷跷板公式中的层级相互抵消,从而解释中微子的大混合。

摘要:

味解构指非普适规范扩展,其中原始规范对称性被解构为每个家族一份的独立副本。对称性破缺的分层链为味难题提供了一个有吸引力的低标度解决方案,与味改变中性流和有限自然性相一致。尽管在解释夸克和带电轻子部门味层级起源方面很成功,但现有模型一直难以应对中微子振荡中观察到的大且看似无政府状态的混合。本文确定了在带有右手中微子的通用模型中,中微子无政府状态可能由味解构产生的条件。当将解构应用于扩展规范对称性精心挑选的子群时,跷跷板公式中的层级相互抵消。

英文摘要:

Flavor deconstruction refers to non-universal gauge extensions where the original gauge symmetry is deconstructed into separate copies, one for each family. A hierarchical chain of symmetry breaking provides an attractive low-scale solution to the flavor puzzle, consistent with flavor-changing neutral currents and finite naturalness. Although successful in explaining the origin of flavor hierarchies in the quark and charged lepton sectors, existing models have struggled with the large and seemingly anarchic mixing observed in neutrino oscillations. This letter identifies conditions under which neutrino anarchy may arise from flavor deconstruction in generic models with right-handed neutrinos. When deconstruction is applied to carefully chosen subgroups of the extended gauge symmetry, hierarchies in the seesaw formula cancel out.

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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