A two-loop induced neutrino mass model, dark matter, and LFV processes ℓ → ℓγ, and μe → ee in a hidden local U(1) symmetry
A two-loop induced neutrino mass model, dark matter, and LFV processes ℓ → ℓγ, and μe → ee in a hidden local U(1) symmetry
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双环诱导中微子质量模型、暗物质和 LFV 在隐藏的局部 U(1) 对称性中处理 ℓ→ℓγ 和 μe→ee
DOI：
10.1016/j.nuclphysb.2020.115236
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Y. Uesaka
中科院分区：
文献类型：
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作者：
Takaaki Nomura;H. Okada;Y. Uesaka
我们讨论了一个基于隐藏U (1) X规范对称的模型，在该模型中，隐藏扇区中的粒子与标准模型轻子之间的相互作用在双环水平上诱导中微子质量。由于中微子质量被双环抑制，其汤川耦合可能相当大，并且会影响轻子味现象。我们分析了U (1) X隐藏扇区中标准模型轻子与粒子相互作用引起的中微子质量矩阵、轻子风味违反过程、电子/ μ子g−2和暗物质湮灭截面，发现它们的相互作用在我们的场景中是相当大的。通过数值分析，我们使用允许的参数显示了这些过程的期望比率，这些参数可以拟合中微子数据并满足风味约束。
We discuss a model based on a hidden U (1) X gauge symmetry in which neutrino mass is induced at two-loop level by effects of interactions among particles in hidden sector and the Standard Model leptons. Since neutrino mass is suppressed by two-loop, its associate Yukawa couplings can be sizable and it would affect lepton flavor phenomenology. We analyze neutrino mass matrix, lepton flavor violating processes, electron/muon g− 2 and dark matter annihilation cross section which are induced via interactions among Standard Model leptons and particles in U (1) X hidden sector, and their interactions can be sizable in our scenario. Performing numerical analysis, we show expected ratios for these processes using allowed parameters which can fit the neutrino data and satisfy flavor constraints.