We use the present upper bound on the neutron electric dipole moment to give an estimate for the upper limit of the CP-violating couplings of the η(η′) meson to the neutron. Using this result, we derive constraints on the CP-violating two-pion decays of the η(η′). Our results are relevant for the running and planned GlueX and LHCb measurements of rare meson decays.
@article{arxiv.1801.10101,
title = {Relating CP-violating decays to the neutron EDM},
author = {Thomas Gutsche and Astrid N. Hiller Blin and Sergey Kovalenko and Serguei Kuleshov and Valery E. Lyubovitskij and Manuel J. Vicente Vacas and Alexey Zhevlakov},
journal= {arXiv preprint arXiv:1801.10101},
year = {2018}
}