Remarkable virtual SUSY effects in $W^{\pm}$ production at high energy hadron colliders

TL;DR

This paper provides a detailed 1-loop electroweak correction analysis for $W^{}$ production at high-energy colliders, highlighting the significant virtual SUSY effects and their impact on helicity amplitudes and distributions.

Contribution

It offers the first comprehensive study of SUSY effects on $W^{}$ production at high energies, including detailed amplitude behavior and model dependence at the LHC.

Findings

SUSY virtual contributions significantly alter helicity amplitude behaviors.

High-energy asymptotic properties of amplitudes are clarified.

SUSY effects influence transverse momentum and angular distributions.

Abstract

We present a complete 1-loop study of the electroweak corrections to the process $ug\to dW^+$ in MSSM and SM. The occurrence of a number of remarkable properties in the behavior of the helicity amplitudes at high energies is stressed, and the crucial role of the virtual SUSY contributions in establishing them, is emphasized. The approach to asymptopia of these amplitudes is discussed, comparing the effects of the logarithmic and constant contributions to the mass suppressed ones, which are relevant at lower energies. Applying crossing to $ug\to d W^+$, we obtain all subprocesses needed for the 1-loop electroweak corrections to $W^\pm$-production at LHC. The SUSY model dependence of such a production is then studied, and illustrations are given for the transverse $W^{\pm}$ momentum distribution, as well as the angular distribution in the subprocess center of mass.