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arXiv 2102.02516hep-phhep-th
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强子对撞机上产生$Wb\bar{b}$的双环QCD修正

Two-loop QCD corrections to $Wb\bar{b}$ production at hadron colliders

Simon Badger, Heribertus Bayu Hartanto, Simone Zoia

摘要:

本文采用色夸克近似和无质量底夸克近似,解析计算了在壳层$W$ -玻色子对$u\bar{d}\to W^+b\bar{b}$的双圈QCD修正。我们执行的非偏振平方矩阵元素,使用有限场重建技术的集成部分减少,并确定一个独立的基础上的特殊功能,允许分析减法的红外和紫外线极点。这个基础是有效的所有平面拓扑结构的五粒子散射与离壳腿。

英文摘要:

We present an analytic computation of the two-loop QCD corrections to $u\bar{d}\to W^+b\bar{b}$ for an on-shell $W$-boson using the leading colour and massless bottom quark approximations. We perform an integration-by-parts reduction of the unpolarised squared matrix element using finite field reconstruction techniques and identify an independent basis of special functions that allows an analytic subtraction of the infrared and ultraviolet poles. This basis is valid for all planar topologies for five-particle scattering with an off-shell leg.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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