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arXiv · 2305.12305

aNNLO results for $t{\bar t}\gamma$ cross sections

Nikolaos Kidonakis·Alberto Tonero
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Abstract

We present theoretical calculations of total cross sections and top-quark transverse-momentum and rapidity distributions in the associated production of a top-antitop pair with a photon ($t{\bar t}\gamma$ production). We include complete QCD and electroweak corrections at NLO as well as soft-gluon corrections at approximate NNLO (aNNLO). The aNNLO corrections are very significant, they decrease theoretical uncertainties, and they are needed for better comparison with data from the LHC.

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Nikolaos Kidonakis, Alberto Tonero. 2023-05-21. aNNLO results for $t{\bar t}\gamma$ cross sections. https://arxiv.org/abs/2305.12305

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