Observation of the Decay Ψ(3686) →σ<sup>0</sup>(σ)over-bar<sup>0</sup>ω

Using a dataset of (27.12 +/- 0.14) x 10(8) psi(3686) events collected by the BESIII detector operating at the BEPCII collider, we report the first observation of the decay psi(3686) -> Sigma(0)(Sigma) over bar (0)omega. with a statistical significance of 8.9 sigma. The measured branching fraction is (1.24 +/- 0.16(stat +/-) 0.11(sys)) x 10(-5), where the first uncertainty is statistical and the second is systematic. Additionally, we investigate potential intermediate states in the invariant mass distributions of Sigma(0) omega, (Sigma) over bar (0)omega. and Sigma(0)(Sigma) over bar (0)omega. A hint of a resonance is observed in the invariant mass distribution of M-Sigma 0 (Sigma) over bar0 omega, located around 2.06 GeV/c(2), with a significance of 2.5 sigma.

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Observation of the Decay Ψ(3686) →σ<sup>0</sup>(σ)over-bar<sup>0</sup>ω

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