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arXiv 0912.0853hep-thhep-ph
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F-theory GUT中基于E8的Froggatt-Nielsen模型

Froggatt-Nielsen models from E8 in F-theory GUTs

Emilian Dudas, Eran Palti

摘要:

本文研究了F理论SU(5)大统一模型,其中三代标准模型来自三条不同的曲线。所有的物质都来自于在增强的E8规范对称性的点相交的曲线。给一些GUT单峰赋予vev自然地实现了Froggatt-Nielsen方法来实现风味结构。对所有可能的模型进行扫描,并使用现象学约束过滤结果。我们发现一个独特的模型,适合夸克和轻子的质量和混合很好的观察。这个模型有两个缺点:R-宇称必须手工施加,并且存在双重三重态分裂问题。

英文摘要:

This paper studies F-theory SU(5) GUT models where the three generations of the standard model come from three different curves. All the matter is taken to come from curves intersecting at a point of enhanced E8 gauge symmetry. Giving a vev to some of the GUT singlets naturally implements a Froggatt-Nielsen approach to flavour structure. A scan is performed over all possible models and the results are filtered using phenomenological constraints. We find a unique model that fits observations of quark and lepton masses and mixing well. This model suffers from two drawbacks: R-parity must be imposed by hand and there is a doublet-triplet splitting problem.

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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