Eta c meson
= Eta c meson
{title2=$\eta_c$}
The ground-state <pseudoscalar meson> with <quark model> content $c\bar c$ is denoted $\eta_c(1S)$. It is a hidden-charm <quarkonium> state, with zero net charm, rather than an open-charm <D meson>.
= Eta c meson
{title2=$\eta_c$}
The ground-state <pseudoscalar meson> with <quark model> content $c\bar c$ is denoted $\eta_c(1S)$. It is a hidden-charm <quarkonium> state, with zero net charm, rather than an open-charm <D meson>.