QCD corrections in $tq\gamma$ production at hadron colliders

Abstract

We study QCD corrections for the associated production of a single top quark and a photon ($tq\gamma$ production) at hadron colliders. We calculate the NLO cross section at LHC and future collider energies for a variety of kinematical cuts, and we estimate uncertainties from scale dependence and from parton distributions. We also calculate differential distributions in top-quark transverse-momentum and rapidity as well as photon energy. Finally, we study higher-order corrections from soft-gluon emission for this process, and we provide approximate NNLO (aNNLO) results for the cross section and top-quark differential distributions. We also compare our calculations with recent measurements from CMS and ATLAS at the LHC and find that the aNNLO corrections improve the comparison between the data and the Standard Model predictions.

arXiv comment15 pages, 7 figures, 10 tables; v2 has a lot of additional new material

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Cited by in corpus (8)

• Higher-order corrections in $t\bar{t}\gamma$ cross sections
• Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector
• Soft-gluon corrections for $tqZ$ production
• Soft-gluon corrections in $t\bar{t}W$ production
• SMEFT chromomagnetic dipole operator contributions to $t\bar{t}$ production at approximate NNLO in QCD
• Resummation for $s$-channel single-top production
• Single-top quark physics at the LHC: from precision measurements to rare processes and top quark properties
• Higher-order QCD and electroweak corrections for $t\bar{t}H$ production