论文标题
通过$νγ$生产搜索异常的$ZZγ$和$Zγ$耦合
Search for the anomalous $ZZγ$ and $Zγγ$ couplings via $ννγ$ production at the CLIC
论文作者
论文摘要
标准模型的非亚洲仪表结构意味着存在多个玻色子自我相互作用。这些相互作用的实验和理论研究中的精确测量不仅允许测试标准模型的性质,而且还可以测试来自超越标准模型的新物理贡献。这些相互作用可以在有效理论方法中使用模型独立的方式来检查,该方法构成了本研究的动机部分。在本文中,我们通过该过程研究了异常的$ZZγ$和$Zγγ$中性三重量规耦合,$ e^{ - } e^{+} \ tozγ$ tozγ$,用于$ z $ boson的neutrino- antineutrino对衰减。它已经在紧凑型线性对撞机上使用$ \ sqrt {s} = 3 $ tev执行的是偏振和极化的电子梁。该研究的重点是$ cp $ -converving $ c _ {\ widetilde {b} w}/{λ^4} $和$ cp $ - violating $ c_ {bb}/{λ^4} $,$ c_ {bw}/{bw}/{bw}/{λ^4} $,$ c_}具有$ 95 \%$置信度的对异常中性三重量学耦合的敏感性,具有$ 0 \%$,$ 5 \%$和$ 10 \%$的系统不确定性的untolarized,$ -80 \%\%$ $和$ 80 \%\%$ $ 80 \%$ $ 80 \%$ $ ccat l} _ {\ text {int}} = 5 $ $ \ rm ab^{ - 1} $,$ {\ cal l} _ {\ text {int}} = 4 $ $ $ \ rm ab^{ - 1} $ 分别。比较最新的实验限制和相关的现象学研究,我们对异常中性量规耦合的结果设定了更严格的敏感性。
The non-Abelian gauge structure of the Standard Model implies the presence of the multi-boson self-interactions. Precise measurements in experimental and theoretical studies of these interactions allow not only testing the nature of the Standard Model but also new physics contribution coming from the beyond Standard Model. These interactions can be examined using a model-independent way in effective theory approach that composes the motivation part of this study. In this paper, we examine the anomalous $ZZγ$ and $Zγγ$ neutral triple gauge couplings via the process $e^{-} e^{+}\to Zγ$ for the neutrino-antineutrino pair decay of $Z$ boson. It has performed with both unpolarized and polarized electron beams at the Compact Linear Collider with $\sqrt{s}= 3$ TeV. The study focused on $CP$-conserving $C_{\widetilde{B}W}/{Λ^4}$ and $CP$-violating $C_{BB}/{Λ^4}$, $C_{BW}/{Λ^4}$, $C_{WW}/{Λ^4}$ couplings. Obtained sensitivities on the anomalous neutral triple gauge couplings with $95\%$ Confidence Level are given with systematic uncertainties of $0\%$, $5\%$ and $10\%$ for unpolarized, $-80\%$ and $80\%$ polarized electron beams with integrated luminosities of ${\cal L}_{\text{int}}=5$ $\rm ab^{-1}$, ${\cal L}_{\text{int}}=4$ $\rm ab^{-1}$ and ${\cal L}_{\text{int}}=1$ $\rm ab^{-1}$, respectively. Comparing the latest experimental limits and related phenomenological studies, our results on the anomalous neutral gauge couplings are set more stringent sensitivity between 10-30 times of magnitude.