Study of ${\chi }_{cJ}\to \eta \eta {\eta }^{\prime }$ via intermediate charmed meson loop mechanisms and its implications for non-observation of ${\eta }_1(1855)$ in ${\chi }_{cJ}$ decays

Xin-Ru Wang, Shu-Qi Wang, Shi-Dong Liu +3

Recently, the BESIII Collaboration reported the first observation of the decays ${\chi }_{cJ}\to \eta \eta {\eta }^{\prime }$ in order to search for the $1^{-+}$ exotic state ${\eta }_1(1855)$. A partial wave…