${{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ 2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}$  Decay Mode Summary INSPIRE   PDGID:
M059.5
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level
P(MeV/c)  
$\Gamma_{4}$ ${{\mathit \eta}_{{{c}}}{(2S)}}$ $\rightarrow$ 2 ${{\mathit \pi}^{+}}$2 ${{\mathit \pi}^{-}}$ $<0.021$ CL= 90% 1792
The following data is related to the above value:
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