We perform a study of W-boson production in polarized proton-proton collisions through next-to-next-to-leading order (NNLO) in perturbative QCD. This calculation is required to extend the extraction of polarized parton distribution functions to NNLO accuracy. We present differential distributions at $\sqrt{s}=510$ GeV, relevant for comparison to measurements from the Relativistic Heavy Ion Collider (RHIC). The NNLO QCD corrections significantly reduce the scale dependence of the cross section. We compare the longitudinal single-spin asymmetries as a function of lepton pseudorapidity to RHIC data. The asymmetries exhibit excellent stability under perturbative QCD corrections.

我们通过扰动QCD中的下一个至前一个领先顺序（NNLO）对极化质子-质子碰撞中的W玻色子产生进行了研究。需要进行此计算才能将极化parton分布函数的提取扩展到NNLO精度。我们在下面介绍差分分布$\sqrt{s}=510$GeV，与相对论重离子对撞机（RHIC）的测量结果进行比较时有关。NNLO QCD校正显着降低了横截面的比例依赖性。我们将纵向单旋不对称性作为轻子假快速反应与RHIC数据的函数进行比较。在微扰QCD校正下，不对称表现出出色的稳定性。