${\boldsymbol {\boldsymbol c}}$ ${\boldsymbol {\overline{\boldsymbol c}}}$ MESONS
(including possibly non- ${\boldsymbol {\boldsymbol q}}$ ${\boldsymbol {\overline{\boldsymbol q}}}$ states)
INSPIRE search

${{\boldsymbol \psi}{(4390)}}$ $I^G(J^{PC})$ = $0^-(1^{- -})$


was ${{\mathit X}{(4390)}}$
This state shows properties different from a conventional ${{\mathit q}}{{\overline{\mathit q}}}$ state. A candidate for an exotic structure. See the review on non- ${{\mathit q}}{{\overline{\mathit q}}}$ states.
${{\mathit \psi}{(4390)}}$ MASS   $4392 \pm7$ MeV 
${{\mathit \psi}{(4390)}}$ WIDTH   $140 {}^{+16}_{-21}$ MeV 
$\Gamma_{1}$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit h}_{{c}}}$ seen739