The transverse momentum spectra of weak gauge bosons and their ratios probe the underlying dynamics and are crucial in testing our understanding of the standard model. They are an essential ingredient in precision measurements, such as the $W$ boson mass extraction. To fully exploit the potential of the LHC data, we compute the second-order [next-to-next-to-leading-order (NNLO)] QCD corrections to the inclusive-$p_T^W$ spectrum as well as to the ratios of spectra for $W^{-}/W^{+}$ and $Z/W$. We find that the inclusion of NNLO QCD corrections considerably improves the theoretical description of the experimental CMS data and results in a substantial reduction of the residual scale uncertainties.

中文翻译：

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弱规范玻色子的横向动量分布的下一个到下一个领先的QCD校正

弱规格玻色子的横向动量谱及其比率探查了潜在的动力学，对于测试我们对标准模型的理解至关重要。它们是精密测量中必不可少的成分，例如$\mathrm{w\; ^}$玻色子质量提取。为了充分利用LHC数据的潜力，我们计算了包含以下内容的二阶[next-to-next-lead-order（NNLO）] QCD修正值：$p_{Ť}^{\mathrm{w\; ^}}$ 光谱以及光谱比率 ${\mathrm{w\; ^}}^{-}/{\mathrm{w\; ^}}^{+}$ 和 $ž/\mathrm{w\; ^}$。我们发现，将NNLO QCD校正包括在内可大大改善实验CMS数据的理论描述，并显着减少剩余规模不确定性。