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arXiv 0909.2543hep-ph
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非超对称SO(10)大统一理论中的中间尺度

Intermediate scales in non-supersymmetric SO(10) grand unified theories

Michal Malinsky

摘要:

人们经常争论,在非超对称SO(10)大统一理论中,几乎没有任何空间来调和质子衰变搜索中出现的GUT标度位置的下限和中微子振荡实验中得出的中微子绝对质量标度的下限与规范耦合统一约束。最近对轨距运行的两个回路重新评估提供了第一个完整的情况,在几个方面补充了现有的研究。改进的分析揭示了参数空间中的一个新空间,可以支持一类非超对称SO(10)模型,这些模型可能与所有当前的物理数据兼容,包括对夸克和轻子质量和混合产生的相关Yukawa扇区的约束。这反过来又带回了一些最简单的非超对称大统一理论场景的可行性问题。

英文摘要:

It is often argued that in the class of non-supersymmetric SO(10) grand unified theories there is barely any room for reconciling the lower bound on the position of the GUT scale emerging from the proton decay searches and the lower limit on the absolute neutrino mass scale derived from the neutrino oscillation experiments with the gauge coupling unification constraints. The recent two-loop reassessment of the gauge running provides the first complete picture of the situation, complementing the existing studies in several aspects. The improved analysis reveals a new room in the parametric space that could support a class of non-supersymmetric SO(10) models potentially compatible with all current physical data, including constraints on the relevant Yukawa sector emerging from the quark and lepton masses and mixings. This, in turn, brings back the question of viability of some of the simplest non-supersymmetric GUT scenarios.

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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