AI 中文总结
研究基于\(L_{\mu}-L_{\tau}\)阿贝尔规范对称性模型，通过引入无反常手征费米子作为右手型中微子起源，利用高维算符产生中微子狄拉克质量，规范对称性破缺后出现准狄拉克中微子情形，可产生现实中微子物理。
AI 中文摘要
在具有\(L_{\mu}-L_{\tau}\)阿贝尔规范对称性的模型中，引入作为右手型中微子起源的无反常手征费米子（标准模型单态）。该\(\mathsf{U}(1)\)对称性使右手型中微子马约拉纳质量为零。中微子微小的非零狄拉克质量源于具有自然耦合常数的高维算符。规范对称性破缺后自然出现准狄拉克中微子情形并产生现实的中微子物理，还讨论了该模型的现象学和宇宙学方面。
英文摘要
In a model with $L_μ - L_τ$ Abelian gauge symmetry, anomaly-free chiral fermions, which are Standard Model singlets, are introduced as the origin of right-handed neutrinos. This $\mathsf{U} (1)$ symmetry keeps the right-handed neutrinos Majorana massless. Tiny nonvanishing Dirac masses of neutrinos are due to higher-dimensional operators with natural coupling constants. After gauge symmetry breaking, a quasi-Dirac neutrino scenario naturally appears, and realistic neutrino physics can be produced. Phenomenological and cosmological aspects of the model are discussed.
Comments19 pages
