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arXiv 1606.08463hep-phhep-ex
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NNLO QCD对t通道单顶夸克产生和衰变的修正

NNLO QCD Corrections to t-channel Single Top-Quark Production and Decay

Edmond L. Berger, Jun Gao, C. -P. Yuan, Hua Xing Zhu

摘要:

在窄宽近似下,忽略入射质子间的串扰,采用全微分次-次-主导阶方法计算了LHC中t通道单顶夸克的产生和衰变.我们对13 TeV的基准截面进行了研究,发现次-次-首阶QCD修正可以达到-6%。比例变化被减少到百分之一的水平。我们的结果可用于改进实验的可接受性估计和单顶夸克产生截面和顶夸克电弱耦合的测量。

英文摘要:

We present a fully differential next-to-next-to-leading order calculation of t-channel single top-quark production and decay at the LHC under narrow-width approximation and neglecting cross-talk between incoming protons. We focus on the fiducial cross sections at 13 TeV, finding that the next-to-next-to-leading order QCD corrections can reach the level of -6%. The scale variations are reduced to the level of a percent. Our results can be used to improve experimental acceptance estimates and the measurements of the single top-quark production cross section and the top-quark electroweak couplings.

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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