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arXiv 0810.0452hep-ph
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与次主导阶QCD硬喷注相关的强子顶夸克对产生:Tevatron和LHC的唯象研究

Hadronic top-quark pair production in association with a hard jet at next-to-leading order QCD: Phenomenological studies for the Tevatron and the LHC

S. Dittmaier, P. Uwer, S. Weinzierl

摘要:

我们报告的计算次主导阶QCD的生产顶-反顶夸克对在Tevatron和在LHC与硬喷流的修正。积分和微分截面的结果。我们发现一个显着减少的规模依赖。在大多数情况下,修正值低于20%,表明微扰膨胀得到了很好的控制。此外,前-后电荷不对称的顶夸克,这是在Tevatron分析,研究了次领先的顺序。我们发现大的修正表明,观察到的定义必须细化。

英文摘要:

We report on the calculation of the next-to-leading order QCD corrections to the production of top--antitop-quark pairs in association with a hard jet at the Tevatron and at the LHC. Results for integrated and differential cross sections are presented. We find a significant reduction of the scale dependence. In most cases the corrections are below 20% indicating that the perturbative expansion is well under control. Moreover, the forward--backward charge asymmetry of the top-quark, which is analyzed at the Tevatron, is studied at next-to-leading order. We find large corrections suggesting that the definition of the observable has to be refined.

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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