论文标题
Scotogenic三环中微子质量模型的现象学和宇宙学意义
Phenomenological and cosmological implications of a scotogenic three-loop neutrino mass model
论文作者
论文摘要
我们提出了一个术模型，用于通过三环Seesaw产生中微子质量。这是一种最小的扩展惰性双重模型，其自发损坏的全局对称$ u（1）'$和保留的$ \ mathbb {z} _2 $ symmetry。三环抑制使新粒子在TEV尺度上具有质量，而无需微调Yukawa耦合。该模型导致了丰富的现象学，同时满足了中微子双β衰减，带电的 - 莱普顿风味侵犯和Electroweak Precision可观察物所施加的所有当前限制。相对较大的Yukawa耦合导致了较大的违反Lepton风味的过程，远远超出了未来的实验范围。该模型还可以成功解释$ W $质量异常，并提供可行的费米子或标量暗物质候选者。
We propose a scotogenic model for generating neutrino masses through a three-loop seesaw. It is a minimally extended inert doublet model with a spontaneously broken global symmetry $U(1)'$ and a preserved $\mathbb{Z}_2$ symmetry. The three-loop suppression allows the new particles to have masses at the TeV scale without fine-tuning the Yukawa couplings. The model leads to a rich phenomenology while satisfying all the current constraints imposed by neutrinoless double-beta decay, charged-lepton flavor violation, and electroweak precision observables. The relatively large Yukawa couplings lead to sizable rates for charged lepton flavor violation processes, well within future experimental reach. The model could also successfully explain the $W$ mass anomaly and provides viable fermionic or scalar dark matter candidates.
