Department
Physics
Document Type
Article
Publication Date
8-4-2022
Embargo Period
11-12-2022
Abstract
We study QCD corrections for the associated production of a single top quark and a photon (tqγ 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.
Journal Title
European Physical Journal C
Journal ISSN
14346052
Volume
82
First Page
670
Digital Object Identifier (DOI)
10.1140/epjc/s10052-022-10643-z