论文标题
标准模型有效场理论中的可观察到的可观测值
Flavorful Electroweak Precision Observables in the Standard Model Effective Field Theory
论文作者
论文摘要
在W和Z极点测量的Electroweak Precision观测值（EWPO）在标准模型物理方案之外提供了严格的限制。在有效的田间理论（EFT）框架中，EWPO的临近序列QCD和Electroweak的结果对可能在树级别上不影响可观察力的可能的4 flymion operators的EWPO产生间接限制。在这里，我们计算出由风味非宇宙4 fermion相互作用引起的eWPO的临时校正，发现EFT系数上提取的限制对4-弗利米亚操作员的风味结构具有很强的依赖性。
Electroweak precision observables (EWPO) measured at the W and Z poles provide stringent limits on possible beyond the Standard Model physics scenarios. In an effective field theory (EFT) framework, the next-to-leading order QCD and electroweak results for EWPO yield indirect limits on possible 4-fermion operators that do not contribute to the observables at tree level. Here we calculate the next-to-leading corrections to EWPO induced by flavor non-universal 4-fermion interactions and find that the extracted limits on EFT coefficients have a strong dependence on the flavor structure of the 4-fermion operators.
