Talk:Bottom eta meson

Difference between Upsilon meson and Bottom eta meson?
I'm out of my depth here: what is, if any, the difference between these two mesons? Both are seemingly formed by a quark–antiquark pair of. From my limited understanding, that should mean they are equivalent (and the articles should, then, be merged).

But they currently list some differences: mass (9.46 GeV vs. 9.39 GeV); C parity (−1 vs. +1) and discovery (E288 experiment (1977) vs. SLAC (2008)). So I'm not gonna touch anything. But, ideally, their difference should be more clearly stated :) — Avelludo (Talk / Contribs / Log) 01:32, 8 June 2024 (UTC)