Two-loop five-point massless QCD amplitudes within the IBP approach
High Energy Physics - Phenomenology
2019-08-13 v2 High Energy Physics - Theory
Abstract
We solve the integration-by-parts (IBP) identities needed for the computation of any planar two-loop five-point massless amplitude in QCD. We also derive some new results for the most complicated non-planar topology with irreducible numerators of power as high as six. We do this by applying a new strategy for solving the IBP identities which scales better for problems with a large number of scales and/or master integrals. Our results are a proof of principle that the remaining non-planar contributions for all two-loop five-point massless QCD amplitudes can be computed in analytic form.
Cite
@article{arxiv.1805.09182,
title = {Two-loop five-point massless QCD amplitudes within the IBP approach},
author = {Herschel A. Chawdhry and Matthew A. Lim and Alexander Mitov},
journal= {arXiv preprint arXiv:1805.09182},
year = {2019}
}
Comments
6 pages, 1 ancillary file, results available from "http://www.precision.hep.phy.cam.ac.uk/results/amplitudes/". v2 (published version): added references