The Scotogenic model is an economical scenario that generates neutrino masses at the 1-loop level and includes a dark matter candidate. This is achieved by means of an ad-hoc ${\mathbb{Z}}_2$ symmetry, which forbids the tree-level generation of neutrino masses and stabilizes the lightest ${\mathbb{Z}}_2$-odd state. Neutrino masses are also suppressed by a quartic coupling, usually denoted by ${\lambda }_5$. While the smallness of this parameter is natural, it is not explained in the context of the Scotogenic model. We construct an ultraviolet completion of the Scotogenic model that provides a natural explanation for the smallness of the ${\lambda }_5$ parameter and induces the ${\mathbb{Z}}_2$ parity as the low-energy remnant of a global $\mathrm{U}(\mathrm{1})$ symmetry at high energies. The low-energy spectrum contains, besides the usual Scotogenic states, a massive scalar and a massless Goldstone boson, hence leading to novel phenomenological predictions in flavor observables, dark matter physics and colliders.

Scotogenic 模型是一个经济的场景，它在 1 环水平上产生中微子质量，并包括一个暗物质候选者。这是通过一个特别的 ${\mathbb{Z}}_2$ 对称性，禁止中微子质量的树级生成并稳定最轻的中微子 ${\mathbb{Z}}_2$- 奇怪的状态。中微子质量也被四次耦合抑制，通常表示为${\lambda }_5$. 虽然这个参数的小是自然的，但它没有在 Scotogenic 模型的背景下解释。我们构建了 Scotogenic 模型的紫外线完成，为${\lambda }_5$ 参数并诱导 ${\mathbb{Z}}_2$ 平价作为全球低能源残余 $\mathrm{你}(\mathrm{1})$高能对称。除了通常的 Scotogenic 状态之外，低能谱还包含一个巨大的标量和一个无质量的戈德斯通玻色子，因此导致了味道可观测、暗物质物理学和对撞机方面的新现象学预测。