具有破缺的$\mu-\tau$对称性的中微子模型与具有二面体味对称性的无味轻子生成
Neutrino model with broken $μ-τ$ Symmetry and Unflavored Leptogenesis with Dihedral Flavor Symmetry
AI总结：
本文提出基于$D_{4}\times U(1)$味对称性的中微子模型，通过I型跷跷板机制实现破缺的$\mu-\tau$对称性，预测中微子质量与混合，并利用右手中微子衰变成功实现无味轻子生成以解释宇宙重子不对称性。
摘要：
我们提出了一种基于$D_{4}\times U(1)$味对称性的新中微子味模型，该模型对中微子质量和混合给出了预测，并成功生成了观测到的宇宙重子不对称性（BAU）。在味对称性自发破缺后，I型跷跷机制导致了一个具有破缺$\mu-\tau$对称性的轻中微子质量矩阵。通过数值分析，我们发现该模型倾向于正常质量层级，其中最轻中微子质量位于$m_{1}\in \lbrack 2.516,21.351]$ m$\mathrm{eV}$范围内。我们详细探讨了中微子部分的唯象含义并讨论了结果。此外，通过三个右手中微子$N_{i}$衰变的轻子生成机制解决了BAU的生成问题。通过对重子不对称性参数$Y_{B}$的解析和数值分析，在中微子唯象学所允许的参数空间内实现了成功的无味轻子生成。我们还检查了$Y_{B}$与低能可观测量之间的有趣关联，并对结果进行了全面讨论。
英文摘要：
We propose a new neutrino flavor model based on a $D_{4}\times U(1)$ flavor symmetry providing predictions for neutrino masses and mixing along with a successful generation of the observed Baryon Asymmetry of the Universe (BAU). After the spontaneous breaking of the flavor symmetry, the type I seesaw mechanism leads to a light neutrino mass matrix with broken $μ-τ$ symmetry. By performing a numerical analysis, we find that the model favors a normal mass hierarchy with the lightest neutrino mass lies in the range $m_{1}\in \lbrack 2.516,21.351]$ m$\mathrm{eV}$. The phenomenological implications of the neutrino sector are explored in detail and the results are discussed. Moreover, the generation of BAU is addressed via the leptogenesis mechanism from the decay of three right-handed neutrinos $N_{i}$. Through analytical and numerical analysis of the baryon asymmetry parameter $Y_{B}$, a successful unflavored leptogenesis takes place within the allowed parameter space obtained from neutrino phenomenology. We also examine interesting correlations between $Y_{B}$ and low energy observables and provide a comprehensive discussion of the results.
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。
