论文标题
违反W-Boson质量测量的托管对称性
Violation of custodial symmetry from W-boson mass measurements
论文作者
论文摘要
CDF协作中$ W $ -BOSON质量的新测量表明，标准模型预测有很大的张力。我们在对电动精度数据的最新分析中量化了这种差异，并仔细检查了在第六维时产生的标准模型有效场理论的主要变形。我们找到了$ t $参数的非零值的证据，即，对于违反托管对称性的新颖来源，指向4.5 $σ$级别的标准模型以外的物理学。根据粒子物理学中其他当前异常情况，我们将发现的含义与之相关。
The new measurement of the $W$-boson mass from the CDF collaboration shows a significant tension with the Standard Model prediction. We quantify this discrepancy within a state-of-the-art analysis of electroweak precision data and scrutinize the leading deformations of the Standard Model Effective Field Theory arising at dimension six. We find evidence for a non-zero value of the $T$ parameter, i.e. for a novel source of violation of custodial symmetry, pointing to physics beyond the Standard Model at the 4.5$σ$ level. We contextualize the implications of our findings in light of other present anomalies in Particle Physics.
