${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M071.63
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{185}$ ${{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}}$ ($5.4$ ${}^{+3.4}_{-2.9}$) $ \times 10^{-4}$ S=1.0  48
Category: Radiative decays
The following data is related to the above value:
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$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \eta}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{3}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ 2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{4}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit \rho}^{0}}{{\mathit \rho}^{0}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{8}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ 3 ${{\mathit \pi}^{+}}$3 ${{\mathit \pi}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{9}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{10}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit K}^{*0}}{{\overline{\mathit K}}^{*0}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{11}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{0}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{12}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit K}^{+}}{{\mathit K}^{-}}$2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{13}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit K}^{-}}$2 ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ + c.c.$)/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{14}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit \phi}}{{\mathit \phi}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{19}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit p}}{{\overline{\mathit p}}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{20}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit J / \psi}{(1S)}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{23}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \eta}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{24}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \eta}^{\,'}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{25}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \eta}_{{{c}}}{(1S)}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{26}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma$
$\Gamma({{\mathit \psi}{(2S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(2S)}})/\Gamma_{\text{total}}{\times }$ $\Gamma({{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ ${{\mathit K}}{{\overline{\mathit K}}}{{\mathit \pi}})/\Gamma_{\text{total}}$
$\Gamma_{185}/\Gamma{\times }\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}_{2}/\Gamma^{{{\mathit \eta}_{{{c}}}{(2S)}}}$