Associated top-pair production with a heavy boson production through NLO+NNLL accuracy at the LHC

TL;DR

This paper presents advanced calculations of top-antitop pair production with heavy bosons at the LHC, achieving high accuracy through NLO+NNLL resummation in Mellin space to improve theoretical predictions.

Contribution

It introduces a novel application of threshold resummation in direct QCD for precise NLO+NNLL calculations of associated top-pair and heavy boson production at the LHC.

Findings

Enhanced cross section predictions with reduced uncertainties

Improved distribution accuracy for top-pair and heavy boson production

Demonstrated the effectiveness of Mellin-space resummation techniques

Abstract

In this talk we present results of our recent calculations of cross sections and distributions for the associate production of top-antitop quark pairs with a heavy boson (Higgs, W, Z) at the LHC, obtained using threshold resummation in direct QCD, i.e. in the Mellin-space approach.