arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0903.2120hep-ph
收藏

强子对撞机上矢量玻色子的产生:NNLO上完全排他的QCD计算

Vector boson production at hadron colliders: a fully exclusive QCD calculation at NNLO

S. Catani, L. Cieri, G. Ferrera, D. de Florian, M. Grazzini

摘要:

我们考虑了强子碰撞中W和Z玻色子产生的QCD辐射修正。本文在QCD微扰理论中给出了一个直到次-次-首阶(NNLO)的完全排他计算。为了执行此NNLO计算,我们使用最近提出的版本的减法形式主义。计算包括γ-Z干涉、有限宽度效应、矢量玻色子轻子衰变和相应的自旋关联。我们的计算是在一个部分子水平的蒙特卡罗程序中实现的。该程序允许用户对末态轻子和相关的喷流活动进行任意的运动学切割,并以bin直方图的形式计算相应的分布。我们选择的数值结果在Tevatron和LHC。

英文摘要:

We consider QCD radiative corrections to the production of W and Z bosons in hadron collisions. We present a fully exclusive calculation up to next-to-next-to-leading order (NNLO) in QCD perturbation theory. To perform this NNLO computation, we use a recently proposed version of the subtraction formalism. The calculation includes the gamma-Z interference, finite-width effects, the leptonic decay of the vector bosons and the corresponding spin correlations. Our calculation is implemented in a parton level Monte Carlo program. The program allows the user to apply arbitrary kinematical cuts on the final-state leptons and the associated jet activity, and to compute the corresponding distributions in the form of bin histograms. We show selected numerical results at the Tevatron and the LHC.

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。

↑