${{\mathit \psi}{(4660)}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$   Decay Mode Summary INSPIRE   PDGID:
M189.2
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{2}$ ${{\mathit \psi}{(4660)}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ seen 809
The following data is related to the above value:
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$\Gamma($ ${{\mathit \psi}{(4660)}}$ $\rightarrow$ ${{\mathit D}^{0}}{{\mathit D}^{*-}}{{\mathit \pi}^{+}}$ $)/\Gamma($ ${{\mathit \psi}{(4660)}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $)$
$\Gamma_{4}/\Gamma_{2}$
$\Gamma($ ${{\mathit \psi}{(4660)}}$ $\rightarrow$ ${{\mathit \psi}{(2S)}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $)$ ${\times }$ $\Gamma($ ${{\mathit \psi}{(4660)}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{2}\Gamma_{1}/\Gamma$