标题： 希格斯耦合中威尔逊系数的意外抑制 显示英文标题

标题： Accidental Suppression of Wilson Coefficients in Higgs Coupling

摘要： 希格斯耦合是探索标准模型之外物理现象的重要探针，因为它们可能被新物理修改，例如通过希格斯通道相互作用$|H|^2\mathcal{O}$。这些修改通过形式为$ \left(\partial |H|^2\right)^2$和$|H|^6$的六维算符影响希格斯相互作用，通常预期它们的大小是相当的。本文讨论了一种意外抑制现象，其中$|H|^6$耦合显著小于$\left(\partial |H|^2\right)^2$。这种抑制源于树级有效势的截断，缺乏清晰的对称性解释，但在通道模型中仍然存在。本文旨在激发对没有对称性解释或一般框架来描述此类抑制的其他意外抑制实例的进一步研究。我们还讨论了在高亮度大型强子对撞机（HL-LHC）和未来对撞机上，对于具体模型的各种基准场景，这两个六维算符的威尔逊系数的约束。 显示英文摘要

摘要： Higgs couplings are essential probes for physics beyond the Standard Model (BSM) since they can be modified by new physics, such as through the Higgs portal interaction $|H|^2\mathcal{O}$. These modifications influence Higgs interactions via dimension-6 operators of the form $ \left(\partial |H|^2\right)^2$ and $|H|^6$, which are generally expected to be of comparable size. This paper discusses a phenomenon of accidental suppression, where the $|H|^6$ coupling is significantly smaller than $\left(\partial |H|^2\right)^2$. This suppression, arising from the truncation of the tree-level effective potential, lacks a clear symmetry explanation but persists in portal models. This paper aims to inspire further studies on additional instances of accidental suppression without symmetry explanations or a general framework to characterize such suppression. We also discuss constraints, at the HL-LHC and future colliders, on the Wilson coefficients of the two dimension-6 operators for various benchmark scenarios of the concrete model.