论文标题
NNLO QCD校正为$ WB \ bar {b} $生产在LHC
NNLO QCD corrections to $Wb\bar{b}$ production at the LHC
论文作者
论文摘要
我们计算了在QCD中以近代到邻接领先顺序（NNLO）在HADRON COLLIDERS上生产W玻璃体的理论预测，包括W-Boson的Leptonic衰减，同时将底部夸克视为无质量。该计算构成了第一个$ 2 \ 3 $工艺，其巨大的外部粒子要以这种扰动顺序进行研究。我们通过使用有限场方法的领先颜色近似值中所需的两环五粒子振幅得出了一个分析表达。横截面的数值结果和差异分布显示了$ \ sqrt {s} = 8 $ tev的大型强子对撞机。我们观察到包含NNLO QCD校正后的包容性情况的扰动收敛性以及射流否决的预测。
We compute theoretical predictions for the production of a W-boson in association with a bottom-quark pair at hadron colliders at next-to-next-to-leading order (NNLO) in QCD, including the leptonic decay of the W-boson, while treating the bottom quark as massless. This calculation constitutes the very first $2 \to 3$ process with a massive external particle to be studied at such a perturbative order. We derive an analytic expression for the required two-loop five-particle amplitudes in the leading colour approximation employing finite-field methods. Numerical results for the cross section and differential distributions are presented for the Large Hadron Collider at $\sqrt{s} = 8$ TeV. We observe an improvement of the perturbative convergence for the inclusive case and for the prediction with a jet veto upon the inclusion of the NNLO QCD corrections.
