Electroweak corrections to $γZ$ production at hadron colliders
W. Hollik, C. Meier
TL;DR
The paper presents full electroweak one-loop corrections to γZ production at hadron colliders, focusing on Tevatron and LHC energies. It computes the q qbar → γZ partonic process corrections and includes real-photon emission, with a clean separation between QED and purely weak contributions and explicit IR cancellation. Electroweak corrections are found to be numerically significant, especially at high γZ invariant mass and large photon transverse momentum, enhancing sensitivity to anomalous gauge-boson couplings. These results refine SM predictions for γZ production and support improved constraints on new physics in future collider analyses.
Abstract
In this paper we present the results from a calculation of the full electroweak one-loop corrections for $γZ$ vector-boson pair production at hadron colliders. The cases of proton--antiproton as well as proton--proton collisions, at the Tevatron and the LHC, respectively, are considered. Results are presented for the distribution of the $γZ$ invariant mass and for the transverse momentum of the final-state photon. The higher-order electroweak effects are numerically significant, in particular for probing possible anomalous gauge-boson couplings.