FIELDS, PARTICLES, AND NUCLEI

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

S. Bondarenko^ab, E. Dydyshko^ca, L. Kalinovskaya^a, L. Rumyantsev^a, R. Sadykov^a, V. Yermolchyk<sup>ac

a</sup> Joint Institute for Nuclear Research, Dubna, Moscow region, 141980 Russia
^b Dubna State University, Dubna, Moscow region, 141980 Russia
^c Institute for Nuclear Problems, Belarusian State University, Minsk, 220006 Belarus

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.

Received: 27.11.2023
Revised: 05.12.2023
Accepted: 06.12.2023

DOI: 10.31857/S1234567824020010

 English version: Journal of Experimental and Theoretical Physics Letters, 2024, 119:2, 71–77