${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M071.15
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{14}$ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}}$ ($3.37$ $\pm0.06$) $ \times 10^{-2}$ S=1.2  199
Category: Decays into ${{\mathit J / \psi}{(1S)}}$ and anything
The following data is related to the above value:
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$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}})$ ${\times }$ $\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{14}\Gamma_{7}/\Gamma$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ 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$)$
$\Gamma_{8}/\Gamma_{10}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ neutrals$)/\Gamma_{\text{total}}$
$\Gamma_{11}/\Gamma$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}})/\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)$
$\Gamma_{12}/\Gamma_{10}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ neutrals$)/\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}})$
$\Gamma_{11}/\Gamma_{12}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \pi}^{0}}{{\mathit \pi}^{0}})/\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)$
$\Gamma_{13}/\Gamma_{10}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}})/\Gamma_{\text{total}}$
$\Gamma_{14}/\Gamma$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}})/\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)$
$\Gamma_{14}/\Gamma_{10}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}})/\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}})$
$\Gamma_{14}/\Gamma_{12}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \pi}^{0}})/\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}$ anything$)$
$\Gamma_{15}/\Gamma_{10}$