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arXiv 2102.11355hep-ph
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反跷跷板扩展NMSSM中的电子和μ子反常磁矩

Electron and Muon Anomalous Magnetic Moments in the Inverse Seesaw Extended NMSSM

Junjie Cao, Yangle He, Jingwei Lian, Di Zhang, Pengxuan Zhu

摘要:

最近改进的精细结构常数的观察导致了负的$2.4σ$异常的电子$g-2$。结合长期存在的正$4.2σ$差异的μ子异常磁矩,这是有趣的,很难解释这两个异常与一致的模型,而不引入味违反。我们发现,它们可以同时解释在逆跷跷板扩展次最小超对称标准模型(ISS-NMSSM)的Higgsino-sneutrino贡献的$(g-2)_e$和$(g-2)_μ$。光谱特征更倾向于轻$μ$,它可以自然地预测$m_Z$,并不难获得一个$τ$型的中微子暗物质候选者,这是与观测到的暗物质遗迹密度和暗物质直接探测实验的边界相兼容。由于超电子的压缩光谱和不可探测的衰变模式,它们可以逃避目前的大型强子对撞机(LHC)的限制。

英文摘要:

The recently improved observation of the fine structure constant has led to a negative $2.4σ$ anomaly of electron $g-2$. Combined with the long-existing positive $4.2σ$ discrepancy of the muon anomalous magnetic moment, it is interesting and difficult to explain these two anomalies with a consistent model without introducing flavor violations. We show that they can be simultaneously explained in the inverse seesaw extended next-to-minimal supersymmetric standard model (ISS-NMSSM) by the Higgsino--sneutrino contributions to $(g-2)_e$ and $(g-2)_μ$. The spectrum features prefer light $μ$, which can predict $m_Z$ naturally, and it is not difficult to obtain a $τ$-type sneutrino dark matter candidate that is compatible with the observed dark matter relic density and the bounds from dark matter direct detection experiments. Due to the compressed spectra and the undetectable decay mode of selectrons, they can evade the current Large Hadron Collider (LHC) constraints.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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