Novel approach to investigate $\eta$ decays via ${\eta }^{\prime }\to \pi \pi \eta$

Xiaolin Kang, Yuyao Ji, Xiaoqing Yuan +5

To avoid the impact from the background events directly from $e^{+}{e}^{-}$ annihilations or $J/\psi$ decays, we propose a novel approach to investigate $\eta$ decays, in particular for its ra…