论文标题
与顶级对相关的希格斯玻色子生产中的双环红外奇异性
Two-loop infrared singularities in the production of a Higgs boson associated with a top-quark pair
论文作者
论文摘要
Higgs玻色子和顶级Quark对的相关产生对于探测顶级夸克的Yukawa耦合很重要，并要求进行更好的理论建模。在本文中，我们计算了$ t \ bar {t} h $生产的两环红外发散。为此，我们计算一环振幅为尺寸调节器$ε$中的较高订单。红外线的数字结果作为参考在几个代表性的相空间点上给出。该工作服务器的结果是在近代到领先的订单下进行$ t \ bar {t} h $ cross部分的持续努力的一部分。
The associated production of a Higgs boson and a top-quark pair is important for probing the Yukawa coupling of the top quark, and calls for better theoretical modeling. In this paper, we calculate the two-loop infrared divergences in $t\bar{t}H$ production at hadron colliders. To do that we compute the one-loop amplitudes to higher orders in the dimensional regulator $ε$. Numeric results for the infrared poles are given as a reference at several representative phase-space points. The result in this work servers as a part of the ongoing efforts towards the $t\bar{t}H$ cross sections at the next-to-next-to-leading order.
