In this letter we show that pseudoscalar meson leptonic decay data can be used to set stringent limits on the mass mWR of a right-handed vector boson, such as the one that appears in left-right symmetric models. We have shown that for a heavy neutrino with a mass mN in the range 50<mN/MeV<1900 one can constraint mWR≲(4−19) TeV at 90 % CL. This provides the most stringent experimental limits on the WR mass to date.
@article{arxiv.2307.04862,
title = {New limits on $W_R$ from meson decays},
author = {Gustavo F. S. Alves and Chee Sheng Fong and Luighi P. S. Leal and Renata Zukanovich Funchal},
journal= {arXiv preprint arXiv:2307.04862},
year = {2025}
}