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

INSPIRE search

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

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

Decay Modes

$\Gamma_{1}$

${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit h}_{{c}}}$

seen

739

$\Gamma_{2}$

${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \psi}{(3770)}}$

possibly seen

512