论文标题
MUON和Electron $ G-2 $异常和暗物质的解释
An explanation for the muon and electron $g-2$ anomalies and dark matter
论文作者
论文摘要
We propose simple models with a flavor-dependent global $U(1)_\ell$ and a discrete $\mathbb{Z}_2$ symmetries to explain the anomalies in the measured anomalous magnetic dipole moments of muon and electron, $(g-2)_{μ,e}$, while simultaneously accommodating a dark matter candidate.引入这些新的对称性不仅是为了避免带电瘦素的危险的Lepton风味侵略衰变，还可以确保暗物质的稳定性。我们的模型可以通过涉及新的矢量样瘦素的单循环图实现对MUON和Electron $ G-2 $的相反符号贡献。在真空稳定性和扰动单位性边界以及来自暗物质直接搜索和相关LHC数据的约束下，我们找到合适的参数空间，以同时解释$（g-2）_ {μ，E} $和Relic密度。在此参数空间中，Higgs玻色子与MUON的耦合可以从其标准模型值中最多可通过$ \ sim 38 \％$增强，可以在将来的对撞机实验中进行测试。
We propose simple models with a flavor-dependent global $U(1)_\ell$ and a discrete $\mathbb{Z}_2$ symmetries to explain the anomalies in the measured anomalous magnetic dipole moments of muon and electron, $(g-2)_{μ,e}$, while simultaneously accommodating a dark matter candidate. These new symmetries are introduced not only to avoid the dangerous lepton flavor-violating decays of charged leptons, but also to ensure the stability of the dark matter. Our models can realize the opposite-sign contributions to the muon and electron $g-2$ via one-loop diagrams involving new vector-like leptons. Under the vacuum stability and perturbative unitarity bounds as well as the constraints from the dark matter direct searches and related LHC data, we find suitable parameter space to simultaneously explain $(g-2)_{μ,e}$ and the relic density. In this parameter space, the coupling of the Higgs boson with muons can be enhanced by up to $\sim 38\%$ from its Standard Model value, which can be tested in future collider experiments.
