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arXiv 1801.01136hep-ph
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SMEFT中希格斯衰变到$ZZ$和$Zγ$的NLO分析

Higgs Decays to $ZZ$ and $Zγ$ in the SMEFT: an NLO analysis

Sally Dawson, Pier Paolo Giardino

AI总结:

本文在SMEFT维度-6扩展下计算了希格斯衰变到$ZZ$和$Zγ$的单圈电弱修正,发现重整化群演化的对数贡献大于有限NLO贡献,并首次给出了$G_μ$有限修正的完整结果。

摘要:

我们计算了标准模型有效场论(SMEFT)在维度-6扩展下,包容性$H\rightarrow ZZ$和$H\rightarrow Zγ$衰变的完整单圈电弱修正。$H\rightarrow ZZ$的修正是针对在壳$Z$玻色子计算的,这是物理$H\rightarrow Z f {\overline{f}}$计算的先导。我们给出了结果的紧凑数值公式,并证明由SMEFT系数的重整化群演化产生的对数贡献大于衰变宽度的有限NLO贡献。作为计算的副产品,我们获得了SMEFT中$G_μ$有限修正的首个完整结果。

英文摘要:

We calculate the complete one-loop electroweak corrections to the inclusive $H\rightarrow ZZ$ and $H\rightarrow Zγ$ decays in the dimension-$6$ extension of the Standard Model Effective Field Theory (SMEFT). The corrections to $H\rightarrow ZZ$ are computed for on-shell $Z$ bosons and are a precursor to the physical $H\rightarrow Z f {\overline{f}}$ calculation. We present compact numerical formulas for our results and demonstrate that the logarithmic contributions that result from the renormalization group evolution of the SMEFT coefficients are larger than the finite NLO contributions to the decay widths. As a by-product of our calculation, we obtain the first complete result for the finite corrections to $G_μ$ in the SMEFT.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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