Three-loop soft anomalous dimensions for top-quark production

Abstract

I present results through three loops for soft anomalous dimensions that control soft-gluon emission in processes involving the top quark. In particular I present results for channels in single-top production and top-pair production as well as for processes with new physics, including $tZ$, $t{Z}^{\prime }$, $t\gamma$, and $t{H}^{-}$ production. These calculations are ingredients to resummations at N${}^3$LL accuracy and to derivations of N${}^3$LO soft-gluon corrections.

Comments: 8 pages, 2 figures; presented at the European Physical Society Conference on High Energy Physics (EPS-HEP2019), Ghent, Belgium, 10-17 July 2019