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SO(10)大统一理论中的费米子质量、轴子暗物质与轻子生成

Fermion mass, Axion dark matter, and Leptogenesis in SO(10) GUT

Ajay Kaladharan, Shaikh Saad

AI总结:

本研究针对最小参数SO(10)大统一理论中费米子质量与混合的观测张力,通过引入基础表示费米子和旋量表示标量扩展框架,既实现Peccei-Quinn对称性、拟合费米子质谱,又解释轴子暗物质与宇宙正反物质不对称。

摘要:

汤川区参数最少的SO(10)大统一理论采用可解决强CP问题的Peccei-Quinn(皮塞-奎恩)对称性。这种经济的汤川区极具吸引力,已在文献中得到广泛研究。然而,当考虑汤川耦合的重整化群方程跑动时,该方案与观测到的费米子质量和混合存在一定张力。在本工作中,我们提出对最小框架的一种扩展,仅引入少量新参数即可缓解这一张力。所提出的模型包含一个基础表示的费米子和一个旋量表示的标量。后者是成功实现Peccei-Quinn对称性所必需的,而两者的存在对于获得与费米子质谱的极佳拟合至关重要。在我们的模型中,轴子充当暗物质的角色,且右手中微子的非平衡衰变可成功产生宇宙的正反物质不对称性。

英文摘要:

SO(10) grand unified theory with minimum parameters in the Yukawa sector employs the Peccei-Quinn symmetry that solves the strong CP problem. Such an economical Yukawa sector is highly appealing and has been extensively studied in the literature. However, when the running of the renormalization group equations of the Yukawa couplings are considered, this scenario shows somewhat tension with the observed fermion masses and mixing. In this work, we propose an extension of the minimal framework that alleviates this tension by introducing only a few new parameters. The proposed model consists of a fermion in the fundamental and a scalar in the spinorial representations. While the latter is needed to implement the Peccei-Quinn symmetry successfully, the presence of both is essential in obtaining an excellent fit to the fermion mass spectrum. In our model, axions serve the role of dark matter, and the out-of-equilibrium decays of the right-handed neutrinos successfully generate the matter-antimatter symmetry of the Universe.

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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