| Mode (*) | Fraction ($\Gamma_i$ / $\Gamma$) | Scale Factor/ Conf. Level |
P(MeV/c) | |||
| $\Gamma_{246}$ | ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{c}}}{(1S)}}$ $\rightarrow$ 3 ${{\mathit \gamma}}$ | seen | ||||
| Category: | Radiative decays |
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