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arXiv 1607.01749hep-ph
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在NNLO生产Z+喷气机

Z+jet production at NNLO

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

摘要:

本文简要介绍了我们对强子碰撞中Z+喷注产生的次-次-首阶(NNLO)QCD修正的计算。唯象的结果,其中包括各种微分分布为8 TeV的质子-质子碰撞。当我们从非线性光学转向非线性光学时,可以观察到尺度不确定性的显著降低。我们进一步讨论了如何使用这种计算来描述包含的Z玻色子生产在大的横向动量。为此,理论预测进行比较的测量进行的ATLAS和CMS的合作,在一个中心的质量能量为8 TeV。在这里,包括NNLO QCD效应被发现导致在理论和数据之间的协议的归一化分布的实质性改善。

英文摘要:

We give a brief overview of our calculation of the next-to-next-to-leading order (NNLO) QCD corrections to Z+jet production in hadronic collisions. Phenomenological results are presented which comprise various differential distributions for 8 TeV proton-proton collisions. A significant reduction of the scale uncertainties is observed throughout as we move from NLO to NNLO. We further discuss how this calculation can be used to describe the inclusive Z-boson production at large transverse momentum. To this end, the theory prediction is compared to the measurements performed by the ATLAS and CMS collaborations at a centre-of-mass energy of 8 TeV. Here, the inclusion of NNLO QCD effects are found to result in a substantial improvement in the agreement between theory and data for the normalised distributions.

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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