论文标题
探测光子 - 普罗顿碰撞中的异常tqgamma耦合
Probing the anomalous tqgamma couplings in photon-proton collisions
论文作者
论文摘要
在标准模型中，最大的夸克风味变化中性流程被极大抑制。然而，除了标准模型之外，可以在新的物理模型中增强它们。在新物理学方面，调查顶级夸克的风味变化的中性电流相互作用将是一个重要的测试。在这项工作中，我们检查了该过程的潜力$ {e^{ - }} {p} {\ rightarrow} {e^{ - }}γ^{*} {p} {\ rightArrow} {\ rightArrow} {e^{ - }} {J} {\ bar {j}} bγ^{*} $和$ {e^{ - }} {p} {p} {\ rightarrow} {\ rightArrow} {e^{ - }}}}}γ^^{*} {*} {p} {p} {p} { γ^{*} {\ rightArrow} {e^{ - }} \ textit {l}ν_\ textit {l}bγ^{*} $，带有$ \ sqrt {s} = 7.08 $ and $ 10.0 $ tev $ in the fcc-eh，可用于研究anomal $ tq的$ cou。我们在三个FCC-EH能量和各种集成的亮度上的异常耦合参数上获得了$ 95 {\％} $置信度敏感性。我们发现，我们的限制至少比当前的LHC实验结果好两个数量级。
The top quark flavor changing neutral current processes are extremely suppressed within the Standard Model. Nevertheless, they could be enhanced in a new physics model beyond the Standard Model. Investigating the top quark's flavor changing neutral current interactions at colliders would be an important test in terms of new physics. In this work, we examine the potentials of the processes ${e^{-}} {p} {\rightarrow} {e^{-}} γ^{*} {p} {\rightarrow} {e^{-}} W^{+} b γ^{*}{\rightarrow} {e^{-}} {j} {\bar{j}} b γ^{*} $ and ${e^{-}} {p} {\rightarrow} {e^{-}} γ^{*} {p} {\rightarrow} {e^{-}} W^{+} b γ^{*}{\rightarrow} {e^{-}} \textit{l} ν_\textit{l} b γ^{*} $ at the FCC-eh with $\sqrt{s} = 7.08 $ and $ 10.0 TeV $ to study anomalous $tqγ$ couplings via effective Lagrangians. We obtain $95{\%}$ confidence level sensitivities on the anomalous coupling parameters at the three FCC-eh energies and various integrated luminosities. We find that our limits are at least two orders of magnitude better than the current LHC experimental results.
