Study of $\psi \left(3686\right)\to \Lambda \overline{\Lambda }\omega $

Based on a data sample of $\left(448.1±2.9\right)×{10}^{6}\text{}\text{}\psi \left(3686\right)$ events collected with the BESIII detector at the BEPCII collider, the branching fraction of $\psi \left(3686\right)\to \Lambda \overline{\Lambda }\omega $ is measured to be $\left(3.30±0.34\left(\mathrm{stat}\right)±0.29\left(\mathrm{syst}\right)\right)×{10}^{-5}$ for the first time. In addition, the $\Lambda \omega $ (or $\overline{\Lambda }\omega $) invariant mass spectra is studied and the potential presence of excited $\Lambda $ states has been investigated.