I present a calculation of approximate N3LO corrections from NNLL soft-gluon resummation for differential distributions in top-antitop pair production in hadronic collisions. Soft-gluon corrections are the dominant contribution to top-quark production and closely approximate exact results through NNLO. I show aN3LO results for the total tt¯ cross section, the top-quark pT and rapidity distributions, and the top-quark forward-backward asymmetry. The higher-order corrections are significant and they reduce theoretical uncertainties.
Proceedings of Science
Kidonakis, Nikolaos, "N3LO Approximate Results for Top-quark Differential Cross Sections and Forward-backward Asymmetry" (2015). Faculty Publications. 3848.