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

#### ${{\boldsymbol \psi}{(2S)}}$

$I^G(J^{PC})$ = $0^-(1^{- -})$
See the Review on “${{\mathit \psi}{(2S)}}$ and ${{\mathit \chi}_{{c}}}$ branching ratios” before the ${{\mathit \chi}_{{c0}}{(1P)}}$ Listings.
 ${{\mathit \psi}{(2S)}}$ MASS $3686.10 \pm0.06$ MeV (S = 5.9)
 ${\mathit m}_{{{\mathit \psi}{(2S)}}}–{\mathit m}_{{{\mathit J / \psi}{(1S)}}}$ $589.188 \pm0.028$ MeV
 ${{\mathit \psi}{(2S)}}$ WIDTH $294 \pm8$ keV
 $\Gamma_{1}$ hadrons $(97.85\pm{0.13})\%$
 $\Gamma_{2}$ virtual ${{\mathit \gamma}}$ $\rightarrow$ hadrons $(1.73\pm{0.14})\%$ S=1.5
 $\Gamma_{3}$ ${{\mathit g}}{{\mathit g}}{{\mathit g}}$ $(10.6\pm{1.6})\%$
 $\Gamma_{4}$ ${{\mathit \gamma}}{{\mathit g}}{{\mathit g}}$ $(1.03\pm{0.29})\%$
 $\Gamma_{5}$ light hadrons $(15.4\pm{1.5})\%$
 $\Gamma_{6}$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $(7.93\pm{0.17})\times 10^{-3}$ 1843
 $\Gamma_{7}$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ $(8.0\pm{0.6})\times 10^{-3}$ 1840
 $\Gamma_{8}$ ${{\mathit \tau}^{+}}{{\mathit \tau}^{-}}$ $(3.1\pm{0.4})\times 10^{-3}$ 489
 FOOTNOTES