论文标题
B-LSSM中的电子和Muon $（G-2）$
Electron and muon $(g-2)$ in the B-LSSM
论文作者
论文摘要
标准模型（SM）中的理论预测以及MUON和电子的异常磁偶极矩（MDM）上的测量值很精确，因此MUON和Electron的MDMS与SM之外的新物理（NP）之间的关系密切相关。最近，测得的电子MDM与SM预测之间的负$ \sim2.4σ$差异是由于最近改善了细胞结构常数的确定。结合大约$ \sim3.7σ$的长期持久muon MDM差异，在不引入大型风味侵入效果的情况下，很难在一致模型中解释偏差的大小和相反符号。分析表明，可以在SM的最小超对称扩展（MSSM）中使用本地$ B-L $量规对称（B-LSSM）进行解释。与MSSM相比，B-LSSM中的新参数可能会影响Lepton MDMS的理论预测，并探索它们的效果。
The theoretical predictions in the standard model (SM) and measurements on the anomalous magnetic dipole moments (MDM) of muon and electron have great precision, hence the MDMs of muon and electron have close relation with the new physics (NP) beyond the SM. Recently, a negative $\sim2.4σ$ discrepancy between the measured electron MDM and the SM prediction results from a recent improved determination of the fine structure constant. Combined with the long-lasting muon MDM discrepancy which is about $\sim3.7σ$, it is difficult to explain both the magnitude and opposite signs of the deviations in a consistent model, without introducing large flavour-violating effects. The analysis shows that they can be explained in the minimal supersymmetric extension (MSSM) of the SM with local $B-L$ gauge symmetry (B-LSSM). Comparing with the MSSM, new parameters in the B-LSSM can affect the theoretical predictions on lepton MDMs, and the effects of them are explored.
