论文标题
在Gluon Fusion Higgs Boson生产中，SMEFT操作员的双重插入
Double insertions of SMEFT operators in gluon fusion Higgs boson production
论文作者
论文摘要
与标准模型（SM）偏离的偏差可以通过SM有效场理论（SMEFT）进行参数化，该理论通常在Dimension-6处被截断。在某些过程中，可能需要包括更高维操作员，以及考虑同时插入多个尺寸-6操作员 - 以正确捕获基础紫外线理论的属性。为了在Gluon融合过程中的Higgs玻色子产生中阐明这一点，我们研究了1循环虚拟振幅中Dimension-6运算符的双重插入。我们提出了所需的Feynman规则，最多可达$ \ MATHCAL {O}（1/λ^4）$，并且我们从数值上研究了各种近似值对$ \ Mathcal {O}（1/λ^4）$扩展的影响。
Deviations from the Standard Model (SM) can be parameterized in terms of the SM effective field theory (SMEFT), which is typically truncated at dimension-6. Including higher dimension operators -- as well as considering simultaneous insertions of multiple dimension-6 operators -- may be necessary in some processes, in order to correctly capture the properties of the underlying UV theory. As a step towards clarifying this in the Higgs boson production in gluon fusion process, we study double insertions of dimension-6 operators in the 1-loop virtual amplitude. We present needed Feynman rules up to $\mathcal{O}(1/Λ^4)$ and we numerically study the impact of various approximations to the $\mathcal{O}(1/Λ^4)$ expansion.
