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  • Open Access

Implications of asymptotic safety in two minimal Z-prime models

Christopher D. Carone*

  • High Energy Theory Group, Department of Physics, William & Mary, Williamsburg, Virginia 23187-8795, USA

  • *Contact author: cdcaro@wm.edu
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Phys. Rev. D 113, 035027 – Published 23 February, 2026

DOI: https://doi.org/10.1103/yrr4-vhdw

Abstract

We consider the implications of asymptotic safety on two U(1) gauge extensions of the standard model that are minimal in the sense that anomaly cancellation only requires the presence of right-handed neutrinos. We study the UV fixed points of the gauge couplings taking into account kinetic mixing between hypercharge and the new U(1) gauge field. We consider the possibility that the top-bottom mass splitting originates from the effect of differing gauge charges on the nontrivial fixed-point values of their respective Yukawa couplings and assess the impact of the extended gauge symmetry on the viability of this picture.

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Phys. Rev. D 113, 035027– Published 23 February, 2026
  • Received 19 December 2025
  • Accepted 4 February 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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