${{\mathit \psi}{(4160)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit X}{(3940)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$   Decay Mode Summary INSPIRE   PDGID:
M025.37
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{37}$ ${{\mathit \psi}{(4160)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit X}{(3940)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $<1.47 \times 10^{-4}$ CL= 90%
The following data is related to the above value:
$\Gamma($ ${{\mathit \psi}{(4160)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit X}{(3940)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit J / \psi}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{37}/\Gamma$