Updated predictions for toponium production at the LHC

TL;DR

This paper updates QCD-based predictions for top-quark pair production near threshold at the LHC, incorporating bound state effects and resummation techniques to improve accuracy for experimental analysis.

Contribution

It introduces refined theoretical calculations including Coulomb and threshold resummation for top-quark pairs at the LHC, enhancing prediction precision.

Findings

Improved invariant mass distribution predictions for top-quark pairs.

Quantified uncertainties in the QCD predictions.

Proposed use of these predictions in experimental analyses.

Abstract

We provide an update on QCD predictions for top-quark pair production close to threshold including bound state effects at the Large Hadron Collider. We compute the top-quark pair invariant mass distribution $d\sigma/dM_{t\bar{t}}$, including Coulomb resummation for bound-state effects, as well as threshold resummation for emissions of soft and collinear gluons. We discuss uncertainty estimates and present a proposal for the use of these predictions in experimental analyses.