报告人：靳庆军

时 间：2019年11月29日下午2点

地 点：知新楼C座709会议室

邀请人：王 健 教授

内容简介：

We present analytic forms of three-loop four-gluon planar amplitudes in pure Yang-Mills theory in our recent work. Gauge invariant bases and a set of proper master integrals are chosen such that the amplitudes are explicitly invariant under cyclic permutations of external particles. The D-dimensional unitarity method and integration-by-parts reductions with cut conditions are performed to determine the coefficients of the master integrals. Helicity amplitudes in the conventional dimension regularization scheme are obtained by setting gauge invariant bases to helicity configurations. After renormalizing the ultraviolet divergences, remaining divergences of the amplitudes agree with known infrared divergence structures exactly. Our results provide an essential piece of three-loop amplitudes required for the N3LO order corrections to the production of dijet at hadron colliders.

报告人简介

靳庆军，2014年在宾夕法尼亚大学获得博士学位，先后在浙江大学和中科院理论物理研究所做博士后，2019年就职于中国工程物理研究院，任副研究员。主要研究方向是散射振幅的计算和应用。

欢迎感兴趣的师生参加！