论文标题
强子山利组的底部夸克产生：NNLO QCD中的完全差异预测
Bottom-quark production at hadron colliders: fully differential predictions in NNLO QCD
论文作者
论文摘要
我们将第一个完全差异的计算报告近隔到领先阶（NNLO）QCD辐射校正，以生产强子乘客的底部Quark对的产生。计算是通过使用$ q_t $扣除形式主义来处理和取消实际和虚拟贡献中的红外奇异性来执行的。该计算是在矩阵框架中实现的，从而使我们能够在四平方英尺方案中有效地计算任意的红外安全可观察物。我们介绍了Tevatron和LHC在不同对撞机的能量下的底价产生的选定预测，并与可用的实验结果进行了一些比较。我们发现NNLO更正很大，通常为$ 25 $ - $ 35 \％$，并且会大大减少扰动不确定性。因此，它们的包容对于对该过程的准确描述至关重要。
We report on the first fully differential calculation of the next-to-next-to-leading-order (NNLO) QCD radiative corrections to the production of bottom-quark pairs at hadron colliders. The calculation is performed by using the $q_T$ subtraction formalism to handle and cancel infrared singularities in real and virtual contributions. The computation is implemented in the Matrix framework, thereby allowing us to efficiently compute arbitrary infrared-safe observables in the four-flavour scheme. We present selected predictions for bottom-quark production at the Tevatron and at the LHC at different collider energies, and we perform some comparisons with available experimental results. We find that the NNLO corrections are sizeable, typically of the order of $25$-$35\%$, and they lead to a significant reduction of the perturbative uncertainties. Therefore, their inclusion is crucial for an accurate theoretical description of this process.
