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arXiv · 2406.15773

Theoretical predictions for $t{\bar t}W$ cross sections at approximate N$^3$LO

Nikolaos Kidonakis·Chris Foster
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Abstract

We present theoretical calculations of higher-order QCD and electroweak corrections for the associated production of a top-antitop quark pair and a $W$ boson ($t{\bar t}W$ production) at LHC energies. We show predictions for cross sections at approximate N$^3$LO (aN$^3$LO) which include second-order and third-order soft-gluon corrections added to the exact NLO QCD+electroweak result. We compare our results to recent measurements from the LHC, and we find that our predictions provide improved agreement with the data. We also calculate the top-quark transverse momentum and rapidity distributions in $t{\bar t}W$ production. We find significant enhancements from the higher-order corrections to the total and differential cross sections for this process.

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Nikolaos Kidonakis, Chris Foster. 2024-06-22. Theoretical predictions for $t{\bar t}W$ cross sections at approximate N$^3$LO. https://arxiv.org/abs/2406.15773

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