W boson production cross section at the Large Hadron Collider with script $O(\alpha_{s}^{2})$ corrections
W boson production cross section at the Large Hadron Collider with script $O(\alpha_{s}^{2})$ corrections
复制标题
大型强子对撞机的 W 玻色子产生截面，带有脚本 $O(alpha_{s}^{2})$ 修正
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
F. Petriello
中科院分区：
文献类型：
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作者：
K. Melnikov;F. Petriello
我们计算了对全微分截面pp {yields} WX {yields} {ell}{nu}X的{Omicron}（{alpha}{sub s}{sup 2}）QCD修正，保留了自旋关联的所有影响。这些修正的知识使得有可能计算高精度的W玻色子的生产率和接受在大型强子对撞机，受到现实削减的轻子和丢失的能量分布。对于某些选择的削减，我们发现大的修正时，从下一个到领先的顺序（NLO）到下一个到下一个到领先的顺序（NNLO）在微扰理论。这些修正是显着大于部分子簇射事件发生器合并NLO计算得到的。我们的计算可以用来评估和显着减少QCD的不确定性，在许多研究计划在大型强子对撞机的W玻色子生产。
We compute the {Omicron}({alpha}{sub s}{sup 2}) QCD corrections to the fully differential cross-section pp {yields} WX {yields} {ell}{nu}X, retaining all effects from spin correlations. The knowledge of these corrections makes it possible to calculate with high precision the W boson production rate and acceptance at the LHC, subject to realistic cuts on the lepton and missing energy distributions. For certain choices of cuts we find large corrections when going from next-to-leading order (NLO) to next-to-next-to-leading order (NNLO) in perturbation theory. These corrections are significantly larger than those obtained by parton-shower event generators merged with NLO calculations. Our calculation may be used to assess and significantly reduce the QCD uncertainties in the many studies of W boson production planned at the LHC.