论文标题
B-LSSM中的Electroweak Baryogenogeny和Electon EDM
Electroweak baryogenesis and electron EDM in the B-LSSM
论文作者
论文摘要
Electroweak baryogenesis (EWB) and electric dipole moment (EDM) have close relation with the new physics beyond the standard model (SM), because the SM CP-violating (CPV) interactions are not sufficient to provide the baryon asymmetry of the universe by many orders of magnitude, and the theoretical predictions for the EDM of electron ($d_e$) in the SM are too tiny to be detected in near future.在这项工作中，我们探讨了SM的最小超对称扩展（MSSM）对EWB和电子EDM的CPV效果，并使用局部$ b-l $ gauge对称（B-LSSM）效果。并讨论了该模型中通过树效应的两步过渡。包括对$ d_e $的两层校正以及考虑到更新的实验数据的约束，数值结果表明，B-LSSM可以考虑观察到的Baryon不对称性。此外，当发生$ d_e $的不同贡献之间的取消时，EWB偏爱的区域可以与相应的EDM绑定兼容。
Electroweak baryogenesis (EWB) and electric dipole moment (EDM) have close relation with the new physics beyond the standard model (SM), because the SM CP-violating (CPV) interactions are not sufficient to provide the baryon asymmetry of the universe by many orders of magnitude, and the theoretical predictions for the EDM of electron ($d_e$) in the SM are too tiny to be detected in near future. In this work, we explore the CPV effects on EWB and the electron EDM in the minimal supersymmetric extension (MSSM) of the SM with local $B-L$ gauge symmetry (B-LSSM). And the two-step transition via tree-effects in this model is discussed. Including two-loop corrections to $d_e$ and considering the constrains from updated experimental data, the numerical results show that the B-LSSM can account for the observed baryon asymmetry. In addition, when the cancellation between different contributions to $d_e$ takes place, the region favored by EWB can be compatible with the corresponding EDM bound.
