论文标题
SMEFT上的四局Z-Boson衰减约束
Four-lepton Z-boson decay constraints on the SMEFT
论文作者
论文摘要
我们讨论了在标准模型有效场理论(SMEFT)的参数空间中,当前未约束的平面方向的Z-boson探针的四腿衰变是如何的。我们从SMEFT中的四局运算符上的这些衰减中得出了约束,并展示了该过程的LHC数据如何补充中微子三型生产中的探针。使用高亮度数据的未来差分测量可以强烈限制四局操作员,并删除SMEFT的四兆部部门中的所有平坦方向。我们简要评论将稀有的Z-Depays与Tau-Leptons使用SMEFT参数空间中未经测试的方向进行探测。
We discuss how four-lepton decays of the Z-boson probe currently unconstrained flat directions in the parameter space of the Standard Model Effective Field Theory (SMEFT). We derive the constraints from these decays on four-lepton operators in the SMEFT and show how the LHC data for this process complements probes from neutrino-trident production. Future differential measurements with high-luminosity data can strongly constrain four-lepton operators and remove all flat directions in the four-muon sector of the SMEFT. We comment briefly on the possibility of using rare Z-decays to tau-leptons to probe untested directions in the SMEFT parameter space.