Heavy-quark production at NNLO

TL;DR

This paper reports the calculation of next-to-next-to-leading order (NNLO) QCD corrections for heavy-quark production, enhancing theoretical precision for top and bottom quark processes in particle physics.

Contribution

The authors implement NNLO QCD corrections in the extsc{Matrix} framework for stable top quarks and extend calculations to bottom quark production and potential top-quark decay and associated Higgs production.

Findings

NNLO corrections improve prediction accuracy for heavy-quark production.

Updated extsc{Matrix} enables multidifferential predictions for top quarks.

Extension to $tar tH$ processes discussed.

Abstract

We present the calculation of QCD radiative corrections to heavy-quark production at NNLO. The calculation is implemented in an updated version of \textsc{Matrix}, which allows us to obtain multidifferential predictions for stable top quarks. We also report on the NNLO calculation for $b{\bar b}$ production and comment on the inclusion of top-quark decays and of the extension of our results to $t\bar tH$.