Study of the decays χ<i>_cJ</i> → Λ(Λ)over-barω

Using (27.12 +/- 0.14) x 10(8) psi(3686) events collected with the BESIII detector, we present the first observation of the decays chi(cJ) -> Lambda(Lambda) over bar omega, where J = 0, 1, 2, with statistical significances of 11.7s, 11.2s, and 11.8s. The branching fractions of these decays are determined to be B(chi(c0) -> Lambda(Lambda) over bar omega) = (2.37 +/- 0.22 +/- 0.25) x 10(-4), B(chi(c1) -> Lambda(Lambda) over bar omega) = (1.01 +/- 0.10 +/- 0.11) x 10(-4), and B(chi(c2) -> Lambda(Lambda) over bar omega) = (1.40 +/- 0.13 +/- 0.17) x 10(-4), where the first uncertainties are statistical and the second are systematic. We observe no clear intermediate structures.