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arXiv · 2511.10856

Top-quark production cross sections at higher perturbative orders

Nikolaos Kidonakis
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Abstract

I present calculations of higher-order corrections to top-quark production via three different processes: the production of a top-antitop pair and a $Z$ boson; single-top quark production in the $s$-channel; and top-antitop production with a Higgs boson. It is shown that the contributions from soft-gluon corrections are numerically dominant and large in all these processes. I present approximate NNLO (aNNLO) and approximate N$^3$LO (aN$^3$LO) cross sections that include soft-gluon corrections added to the exact NLO QCD results. Electroweak corrections through NLO are also included for $t{\bar t}Z$ and $t{\bar t}H$ production. The theoretical predictions are compared to LHC measurements of total cross sections for these processes.

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Nikolaos Kidonakis. 2025-11-13. Top-quark production cross sections at higher perturbative orders. https://arxiv.org/abs/2511.10856

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