$tW$ and $t{Z}^{\prime }$ production at hadron colliders

Abstract

We present theoretical results with soft-gluon corrections for two separate processes: (1) the production of a single top quark in association with a $W$ boson in the Standard Model; and (2) the production of a single top quark in association with a heavy $Z^{\prime }$ boson in new physics models with or without anomalous couplings. We show that the higher-order corrections from soft-gluon emission are dominant for a wide range of collider energies. Results are shown for the total cross sections and top-quark transverse-momentum and rapidity distributions for $tW$ and $t{Z}^{\prime }$ production at LHC and future collider energies up to 100 TeV. The uncertainties from scale dependence and parton distribution functions are also analyzed.

Comments: 6 pages, 5 figures; presented at the XXVIII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2021), Stony Brook University, New York, USA, 12-16 April 2021; for submission to SciPost Physics Proceedings