Abstract
We calculate the four-loop massless QCD corrections with three closed quark lines to quark and gluon form factors. We apply a novel integration by parts algorithm based on modular arithmetic and compute all relevant master integrals for arbitrary values of the space-time dimension. This is the first calculation of a gluon form factor at this perturbative order in QCD.
- Received 17 November 2016
DOI:https://doi.org/10.1103/PhysRevD.95.034030
© 2017 American Physical Society
Physics Subject Headings (PhySH)
Particles & Fields