${\boldsymbol {\boldsymbol c}}$ ${\boldsymbol {\overline{\boldsymbol c}}}$ MESONS
(including possibly non- ${\boldsymbol {\boldsymbol q}}$ ${\boldsymbol {\overline{\boldsymbol q}}}$ 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   $3686.097 \pm0.025$ MeV (S = 2.6)
${\mathit m}_{{{\mathit \psi}{(2S)}}}–{\mathit m}_{{{\mathit J / \psi}{(1S)}}}$   $589.188 \pm0.028$ 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
    constrained fit information