6533b7d9fe1ef96bd126c47f

RESEARCH PRODUCT

Quark and gluon form factors to four loop order in QCD: the $N_f^3$ contributions

Andreas Von ManteuffelRobert M. Schabinger

subject

High Energy Physics - TheoryHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics - Theory (hep-th)High Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyFOS: Physical sciencesHigh Energy Physics::Experiment

description

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.

10.1103/physrevd.95.034030http://arxiv.org/abs/1611.00795