We present results from a complete next-to-leading order (NLO) calculation of e+e−→ZH in the standard model effective field theory (SMEFT) framework, including all contributions from dimension-six operators. At NLO, there are novel dependencies on CP violating parameters in the gauge sector, on modifications to the Higgs boson self-couplings, on alterations to the top quark Yukawa couplings, and on four-fermion operators involving the electron and the top quark, among others. We show that including only the logarithms resulting from renormalization group scaling can produce misleading results, and further, we explicitly demonstrate the constraining power of combining measurements from different energy scales. Published by the American Physical Society 2024

中文翻译：

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次序弱标准模型有效场论修正在 e+e−→ZH 中的影响


我们展示了在标准模型有效场论 （SMEFT） 框架中对 e+e-→ZH 进行完整的次前导 （NLO） 计算的结果，包括来自六维运算符的所有贡献。在 NLO 中，对规范扇区中违反 CP 参数、对希格斯玻色子自耦合的修改、对顶夸克汤川耦合的改变以及涉及电子和顶夸克的四费米子算子等存在新的依赖性。我们表明，仅包含重整化组缩放产生的对数会产生误导性结果，并且进一步，我们明确证明了组合来自不同能量尺度的测量的约束能力。 美国物理学会 2024 年出版