论文标题
暗物质辅助Lepton异常磁矩和中微子质量
Dark matter assisted lepton anomalous magnetic moments and neutrino masses
论文作者
论文摘要
我们提出了一个框架来解决中微子质量的起源，解释了电子和MUON异常磁矩（AMMS）数据中观察到的差异，并结合了暗物质（DM）遗物丰度。中微子质量和Lepton AM均在由公共一组标准模型（SM）状态介导的一环水平上产生。在这类模型中，SM以矢量般的带电费米亚和标量多数为单位，所有这些都奇怪的是在强加的$ \ Mathcal {z} _2 $对称性下，它稳定了其中一个位于其中一个的费米子或标量DM候选者。在AMM环中出现了两个标量多重组，因此允许其贡献的不同符号，与观察到的差异一致，这是电子和穆恩的相反符号。媒介般的费米子通过与质量成正比的术语为Lepton AMM产生了大量的新物理贡献。为了证明该框架的生存能力，我们对特定模型进行了详细的研究，为中微子质量拟合并与Lepton Ams混合在一起。此外，还探索了DM现象学和对撞机的签名。
We propose a framework that addresses the origin of neutrino mass, explains the observed discrepancies in the electron and the muon anomalous magnetic moments (AMMs) data and incorporates the dark matter (DM) relic abundance. Both the neutrino mass and the lepton AMMs are generated at one-loop level mediated by a common set of beyond the Standard Model (SM) states. In this class of models, the SM is extended with vector-like charged fermion and scalar multiplets, all odd under an imposed $\mathcal{Z}_2$ symmetry, which stabilizes the fermionic or scalar DM candidate residing in one of them. Two scalar multiplets appear in the AMM loops, thus allowing for different signs of their contributions, in agreement with the observed discrepancies which are of opposite sign for electron and muon. The vector-like fermions give rise to large new physics contributions to the lepton AMMs via chirally enhanced terms that are proportional to their mass. To demonstrate the viability of this framework, we perform a detailed study of a particular model for which a fit to the neutrino masses and mixing together with lepton AMMs are provided. Furthermore, DM phenomenology and collider signatures are explored.
