Determination of spin-parity quantum numbers of X(2370) as $0^{-+}$ from $J/\psi \to \gamma K_S^0{K}_S^0{\eta }^{\prime }$

BESIII Collaboration, M. Ablikim, M. N. Achasov +616

Based on $(10087\pm 44)\times 10^6$ $J/\psi$ events collected with the BESIII detector, a partial wave analysis of the decay $J/\psi \to \gamma K_S^0{K}_S^0{\eta }^{\prime }$ is performed…