Theoretical status and prospects for top-quark pair production at hadron colliders
Theoretical status and prospects for top-quark pair production at hadron colliders
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DOI：
10.1103/physrevd.78.034003
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发表时间：
2008-04
影响因子：
5
通讯作者：
S. Moch;P. Uwer
中科院分区：
文献类型：
--
作者：
S. Moch;P. Uwer
我们更新了 Tevatron 和大型强子对撞机顶夸克对产生横截面的理论预测。特别是，我们采用了由于软胶子恢复而达到的对数精度的改进。我们扩展了恢复的结果，并通过次次领先的顺序导出分析有限阶横截面，这些横截面在阈值附近的所有对数增强项中都是精确的。这些结果是目前对顶夸克对产生截面的最佳估计。我们研究了尺度依赖性以及对部分子光度的敏感性。
We present an update of the theoretical predictions for the cross section of top-quark pair production at Tevatron and LHC. In particular, we employ improvements due to soft-gluon resummation at next-to-next-to-leading logarithmic accuracy. We expand the resummed results and derive analytical finite-order cross sections through next-to-next-to-leading order which are exact in all logarithmically enhanced terms near threshold. These results are the best present estimates for the top-quark pair production cross section. We investigate the scale dependence as well as the sensitivity on the parton luminosities.