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arXiv 2207.11264hep-ph
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在LHC对外壳外$\mathrm{t}\mathrm{Z}\mathrm{j}$生产进行NLO QCD和EW纠正

NLO QCD and EW corrections to off-shell $\mathrm{t}\mathrm{Z}\mathrm{j}$ production at the LHC

Ansgar Denner, Giovanni Pelliccioli, Christopher Schwan

摘要:

在大型强子对撞机上,一个顶夸克与一个$\mathrm{Z}$玻色子($\mathrm{t}\mathrm{Z}\mathrm{j}$产生)的产生是对标准模型的电弱部分的一个相关探测,也是一个可能的新物理效应的窗口。越来越多的实验兴趣,在这个过程中进行差分测量需要一个改进的理论模型,在现实的基准区域。在这篇文章中,我们提出了一个NLO精确的$\mathrm{t}\mathrm{Z}\mathrm{j}$计算,包括完整的离壳效应和自旋相关,结合QCD和电弱辐射修正的LO信号。积分和微分截面示出了由三个带电轻子,两个射流,和失踪的能量为特征的基准设置。

英文摘要:

The production of a single top quark in association with a $\mathrm{Z}$ boson ($\mathrm{t}\mathrm{Z}\mathrm{j}$ production) at the LHC is a relevant probe of the electroweak sector of the Standard Model as well as a window to possible new-physics effects. The growing experimental interest in performing differential measurements for this process demands an improved theoretical modelling in realistic fiducial regions. In this article we present an NLO-accurate $\mathrm{t}\mathrm{Z}\mathrm{j}$ calculation that includes complete off-shell effects and spin correlations, combining QCD and electroweak radiative corrections to the LO signal. Integrated and differential cross-sections are shown for a fiducial setup characterized by three charged leptons, two jets, and missing energy.

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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