${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything  Decay Mode Summary INSPIRE   PDGID:
M071.11
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{10}$ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything ($61.5$ $\pm0.7$) $ \times 10^{-2}$ S=1.3 
Category: Decays into ${{\mathit J / \psi}{(1S)}}$ and anything
The following data is related to the above value:
 ▸ expand all datablocks
$\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)/\Gamma_{\text{total}}$
$\Gamma_{10}/\Gamma$
$\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}})/\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)$
$\Gamma_{7}/\Gamma_{10}$
$\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}})/\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)$
$\Gamma_{8}/\Gamma_{10}$
$\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}})/\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)$
$\Gamma_{12}/\Gamma_{10}$
$\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}})/\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)$
$\Gamma_{13}/\Gamma_{10}$
$\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}})/\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)$
$\Gamma_{14}/\Gamma_{10}$
$\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \pi}^{0}})/\Gamma($ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)$
$\Gamma_{15}/\Gamma_{10}$