Complete reduction of integrals in two-loop five-light-parton scattering amplitudes
High Energy Physics - Phenomenology
2020-09-11 v3 High Energy Physics - Theory
Abstract
We reduce all the most complicated Feynman integrals in two-loop five-light-parton scattering amplitudes to basic master integrals, while other integrals can be reduced even easier. Our results are expressed as systems of linear relations in the block-triangular form, very efficient for numerical calculations. Our results are crucial for complete next-to-next-to-leading order quantum chromodynamics calculations for three-jet, photon, and/or hadron production at hadron colliders. To determine the block-triangular relations, we develop an efficient and general method, which may provide a practical solution to the bottleneck problem of reducing multiloop multiscale integrals.
Cite
@article{arxiv.1912.09294,
title = {Complete reduction of integrals in two-loop five-light-parton scattering amplitudes},
author = {Xin Guan and Xiao Liu and Yan-Qing Ma},
journal= {arXiv preprint arXiv:1912.09294},
year = {2020}
}
Comments
8 pages, 2 figures, version published at Chin.Phys.C