论文标题
探测异常$ z \，z \，γ$和$ z \，γ\，γ$耦合在$ e^+\，e^+\，e^ - $ colliders使用最佳观察技术
Probing anomalous $Z\,Z\,γ$ and $Z\,γ\,γ$ Couplings at the $e^+\,e^-$ Colliders using Optimal Observable Technique
论文作者
论文摘要
我们研究了可以通过$ e^+ \，e^ - $ colliders探测的异常$ZZγ$和$Zγ$耦合。我们采用标准模型有效场理论（SMEFT）方法，以独立的方式检查这些异常的中性三重量规耦合。有四个独立的Dimension-8运算符会产生这些规格的相互作用，其中之一是CP支持，其余三个是CP侵入的。我们采用最佳的可观察技术来提取这些异常耦合可以在未来$ e^+e^ - $ colliders探测的敏感性，然后将结果与LHC获得的最新实验限制进行比较。我们还研究了这些精确测量中光束极化的影响和优势。已经详细讨论了各个异常耦合以及各种耦合之间的相关性的统计极限（95 \％c.l.）。
We study the anomalous $ZZγ$ and $Zγγ$ couplings that can be probed via $Zγ$ production at the $e^+ \, e^-$ colliders. We take Standard Model Effective Field Theory (SMEFT) approach to examine these anomalous neutral triple gauge couplings in a model independent way. There are four independent dimension-8 operators that generate these gauge interactions, one of them is CP-conserving and rest three are CP-violating. We adopt optimal observable technique to extract the sensitivity at which these anomalous couplings can be probed at future $e^+e^-$ colliders and then compare the results with the latest experimental limit obtained at the LHC. We also study the impact and advantage of beam polarization in these precision measurements. Statistical limit (95\% C.L.) on individual anomalous couplings as well as the correlation between various couplings have been discussed in detail.
