The contribution of the weak interaction to the hyperfine splitting of the ground state of muonium is investigated. The amplitudes of the one- and two-quantum exchange determined by the Z and W bosons are calculated. One-loop corrections in the photon and Z boson propagators and their contribution to the hyperfine structure of the spectrum are obtained.
@article{arxiv.2603.04026,
title = {Weak Interaction Contribution to the Muonium Hyperfine Structure in the Standard Model},
author = {F. A. Martynenko and A. P. Martynenko and K. A. Seredina},
journal= {arXiv preprint arXiv:2603.04026},
year = {2026}
}