Observation of ${\chi }_{cJ}\to \Lambda \bar{\Lambda }\eta$

BESIII Collaboration, M. Ablikim, M. N. Achasov +566

By analyzing $(448.1\pm 2.9)\times 10^6$ $\psi (3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decays of ${\chi }_{cJ}\to \Lambda \bar{\Lambda }\eta$ ($J=0$, 1 and 2) ar…