arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1006.4682hep-ph
收藏

超次领先阶的顶夸克对产生

Top-Quark Pair Production Beyond Next-to-Leading Order

V. Ahrens, A. Ferroglia, M. Neubert, B. D. Pecjak, L. L. Yang

摘要:

报道了强子对撞机上顶夸克对产生的微分截面的计算结果。结果是微分相对于顶部对不变质量和部分子散射角。在这些计算中,这是通过采用软共线有效理论技术进行的,我们将阈值矩阵表示为次到次到前导对数阶。从微分截面出发,有可能获得不变质量分布和总截面的理论预测。我们总结了这些观测量的结果,并将它们与不同计算方法得到的结果进行了比较。

英文摘要:

We report on recent calculations of the differential cross section for top-quark pair production at hadron colliders. The results are differential with respect to the top-pair invariant mass and to the partonic scattering angle. In these calculations, which were carried out by employing soft-collinear effective theory techniques, we resummed threshold logarithms up to next-to-next-to-leading logarithmic order. Starting from the differential cross section, it is possible to obtain theoretical predictions for the invariant-mass distribution and the total cross section. We summarize here our results for these observables, and we compare them with the results obtained from different calculational methods.

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。

↑