Speaker
Dr
Wen Chen
Description
According to the soft theorem, the scattering amplitude with soft emissions is factorized into the product of a hard function and a soft current. The soft current is process independent. We calculate the soft current with two hard-scattering particles and a single soft gluon emission to three loops in both QCD and ${\cal N} = 4$ super Yang-Mills theory. To calculate the relevant Feynman integrals, we develop a systematic method to calculate Feynman integrals recursively based on the Feynman-parameter representation.
Authors
HuaXing Zhu
(Zhejiang University)
Dr
Ming-xing Luo
(Beijing Computational Science Research Center)
Tongzhi Yang
Dr
Wen Chen
