scotogenic中微子质量模型中右-handed中微子暗物质 relic 的结构
Anatomy of RHN DM relic in the vanilla scotogenic neutrino mass model
AI总结：
本文研究了scotogenic中微子质量模型中右-handed中微子暗物质 relic 的结构，通过考虑多种过程和实验约束，确定了其可行的质量范围。
摘要：
scotogenic中微子质量模型是通过辐射机制产生轻中微子质量的非常受欢迎的选择。在这些模型中，循环中的粒子由于强加的$\mathcal{Z}_2$对称性而区别于标准模型，循环粒子是奇数。因此，循环中轻的粒子可以成为暗物质候选者。在本文中，我们重新审视最小的scotogenic中微子质量模型，并研究右-handed中微子（RHN）暗物质 relic 的结构，考虑了自湮灭、共湮灭、由转换驱动的过程以及通过冻结in机制产生的贡献。我们施加了来自直接检测和对撞机搜索的DM约束，包括muon异常磁矩、带电轻子味 violation 和低能中微子振荡数据，以证明最轻的RHN可以在质量范围：$M_{h}/2\lesssim M_{\rm DM}\lesssim2000 {\rm GeV}$（热DM）和$0.1 ~{\rm GeV}\lesssim M_{\rm DM}\lesssim 1000 {\rm GeV}$（非热DM）中成为可行的DM，其中$M_h$表示标准模型希格斯质量，$M_{\rm DM}$是RHN暗物质质量。我们还发现长寿命粒子的位移顶点特征，这些特征可以在未来的对撞机中探测。
英文摘要：
The scotogeneic neutrino mass models are very popular choices to generate light neutrino masses via radiative mechanism. In these models, the particles running in the loop are distinguished from the standard model due to an imposed $\mathcal{Z}_2$ symmetry under which the loop particles are odd. Therefore, the lightest particle running in the loop can be a viable dark matter candidate. In this paper, we revisit the minimal scotogenic neutrino mass model and study the anatomy of right handed neutrino (RHN) DM relic, taking into account contributions from self-annihilation, co-annihilation, conversion-driven processes, as well as production via the freeze-in mechanism. We impose the constraints from direct detection and collider searches of DM including anomalous magnetic moment of muon, charged lepton flavor violation and low-energy neutrino oscillation data to show that the lightest RHN can be a viable DM in the mass range: $M_{h}/2\lesssim M_{\rm DM}\lesssim2000 {\rm GeV}$ (thermal DM) and $0.1 ~{\rm GeV}\lesssim M_{\rm DM}\lesssim 1000 {\rm GeV}$ (non-thermal DM), where $M_h$ denotes the Standard Model Higgs mass and $M_{\rm DM}$ is the RHN dark matter mass. We also find the displaced vertex signatures of long lived particles which can be probed at future colliders.
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