We compute the master integrals required for the calculation of the double-real emission contributions to the matching coefficients of 0-jettiness beam functions at next-to-next-to-next-to-leading order in perturbative QCD. As an application, we combine these integrals and derive the double-real gluon emission contribution to the matching coefficient Iqq(t,z) of the quark beam function.
Cite
@article{arxiv.1809.06300,
title = {Double-real contribution to the quark beam function at N$^{3}$LO QCD},
author = {Kirill Melnikov and Robbert Rietkerk and Lorenzo Tancredi and Christopher Wever},
journal= {arXiv preprint arXiv:1809.06300},
year = {2019}
}
Comments
28 pages, 1 figure; updated ancillary file (accessible through url in the section "Results")