2024-05-282024-05-282014-06-242470-00102470-0029https://journals.aps.org/prd/abstract/10.1103/PhysRevD.89.112006https://hdl.handle.net/11452/41537With 1.06 x 10(8) psi(3686) events collected with the BESIII detector, the branching fraction of psi(3686) -> omega K+K- is measured to be (1.54 +/- 0.04 +/- 0.11) x 10(-4). This is the most precise result to date, due to the largest psi(3686) sample, improved signal reconstruction efficiency, good simulation of the detector performance, and a more accurate knowledge of the continuum contribution. Using the branching fraction of J/psi -> omega K+K-, the ratio B(psi(3868) -> K+K-)/B(J/psi -> K+K-) is determined to be (18.4 +/- 3.7)%. This constitutes a significantly improved test of the 12% rule, with the uncertainty now dominated by the J/psi branching fraction.eninfo:eu-repo/semantics/closedAccessAstronomy & astrophysicsPhysicsNarrow resonanceDiscoveryArticle0003386421000022-s2.0-849036904048911https://doi.org/10.1103/PhysRevD.89.112006Astronomy & astrophysicsPhysics, particles & fieldsBaryon; Hadron; Physics