Top-pair and $tW$ production at approximate N$^3$LO

TL;DR

This paper provides approximate N$^3$LO theoretical predictions for top-pair and $tW$ production, including cross sections and distributions, emphasizing soft-gluon corrections near threshold and comparing with LHC data.

Contribution

It introduces approximate N$^3$LO calculations for top production processes, incorporating soft-gluon effects and offering detailed distributions and comparisons with experimental data.

Findings

N$^3$LO corrections significantly improve theoretical accuracy.

Predictions align well with LHC measurements.

Soft-gluon effects dominate near threshold.

Abstract

I present approximate N$^3$LO theoretical results for top-antitop pair production, and for single-top production in association with a $W$ boson. The higher-order corrections are from soft-gluon radiation, which is dominant near partonic threshold. I present results for total cross sections as well as transverse-momentum and rapidity distributions of the top quark, and compare with data at LHC energies.