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arXiv 1601.04569hep-ph
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Z玻色子加喷流产生的NNLO QCD修正

NNLO QCD corrections for Z boson plus jet production

A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover, A. Huss, T. A. Morgan

摘要:

我们讨论了与喷流有关的Z玻色子产生的次-次-主导阶(NNLO)QCD修正,包括所有颜色能级的所有部分子通道和Z玻色子的轻子衰变。我们专注于优化的数值评估的双实贡献,并证明我们的程序传播的Monte Carlo积分在$\mathcal{O}(1000)$核心和重组的结果,然后导致稳定的结果与合理的误差估计。我们应用代表性的削减喷流和带电轻子的横动量和赝快度在LHC的能量,并提出了带电轻子的横动量和快度分布。

英文摘要:

We discuss the next-to-next-to-leading order (NNLO) QCD corrections to Z boson production in association with a jet including all partonic channels at all color levels and including the leptonic decay of the Z boson. We focus on the optimization of the numerical evaluation of the double-real contribution and demonstrate that our procedure for spreading the Monte Carlo integration over $\mathcal{O}(1000)$ cores and recombining the results afterwards lead to stable results with sensible error estimates. We apply representative cuts on the jet and charged lepton transverse momenta and pseudorapidities at LHC energies and present the transverse momentum and rapidity distributions of the charged leptons.

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