Search for ${\eta }_1(1855)$ in ${\chi }_{cJ}\to \eta \eta {\eta }^{\prime }$ decays

BESIII Collaboration, M. Ablikim, M. N. Achasov +689

Based on a sample of $2.7\times 10^9$ $\psi (3686)$ events collected by the BESIII detector operating at the BEPCII collider, an analysis of the decay $ψ(3686)\toγχ_{cJ}, χ_{cJ}\toηηη…