Three-body unitary coupled-channel approach to radiative $J/\psi$ decays and $\eta (1405/1475)$

S. X. Nakamura, Q. Huang, J. -J. Wu +3

Recent BESIII data on radiative $J/\psi$ decays from $\sim 10^{10}$ $J/\psi$ samples should significantly advance our understanding of the controversial nature of $\eta (1405/1475)$. This mo…