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

${{\mathit \eta}_{{{c}}}{(1S)}}$ $I^G(J^{PC})$ = $0^+(0^{- +})$ 

${{\mathit \eta}_{{{c}}}{(1S)}}$ MASS   $2984.1 \pm0.4$ MeV (S = 1.2)
${{\mathit \eta}_{{{c}}}{(1S)}}$ WIDTH   $30.5 \pm0.5$ MeV (S = 1.2)
    fit information