Partial wave analysis of $J/\psi \to \gamma {\eta }^{\prime }{\eta }^{\prime }$

BESIII Collaboration, M. Ablikim, M. N. Achasov +511

Using a sample of $(10.09\pm 0.04)\times 10^{9}J/\psi$ events collected with the BESIII detector, a partial wave analysis of $J/\psi \to \gamma {\eta }^{\prime }{\eta }^{\prime }$ is performed. The masses a…