One-loop electroweak radiative corrections to polarized $e^+e^- \to \gamma Z$ process

TL;DR

This paper provides precise theoretical predictions for the polarized $e^+e^- o \gamma Z$ process, including one-loop electroweak corrections, to aid future collider experiments like CEPC.

Contribution

It presents the first complete one-loop electroweak radiative corrections for the polarized $e^+e^- o \gamma Z$ process using the SANC system, relevant for upcoming collider analyses.

Findings

Numerical results for cross sections at $\sqrt{s} = 250-1000$ GeV.

Electroweak corrections significantly affect the cross sections.

Results are provided for various polarization degrees and schemes.

Abstract

This paper gives high-precision theoretical predictions for cross sections of the process $e^+e^- \to \gamma Z$ for future electron-positron colliders. The calculations are performed using the SANC system. They include complete one-loop electroweak radiative corrections, as well as longitudinal polarization of the initial state. Numerical results are given for the center-of-mass system energy range $\sqrt{s} = 250 - 1000$ GeV with various polarization degrees in the $\alpha(0)$ and $G_\mu$ EW schemes. This study is a contribution to the research program of the CEPC project being under development in China.