Ablikim, M.Achasov, M. N.Adlarson, P.Ahmed, S.Albrecht, M.Aliberti, R.Çetin, Serkant AliKolcu, Onur Buğra2021-12-222021-12-222021Ablikim, M., Achasov, M. N., Adlarson, P., Ahmed, S., Albrecht, M., Aliberti, R., ... & Kolcu, O. B. (2021). Observation of ψ (3686)→ Ξ (1530) 0 Ξ¯(1530) 0 and Ξ (1530) 0 Ξ¯ 0. Physical Review D, 104(9), 092012.2470-00102470-0029https://doi.org/10.1103/PhysRevD.104.092012https://hdl.handle.net/20.500.12713/2336Using (448.1 +/- 2.9) x 10(6) psi (3686) events collected with the BESIII detector and a single-baryon tagging technique, we present the first observation of the decays psi(3686)-> Xi (1530)(0) (Xi) over bar (1530)(0) and Xi (1530)(0) (Xi) over bar (0). The branching fractions are measured to be B psi (3686)-> Xi (1530)(0) (Xi) over bar (1530)(0)) = (6.77 +/- 0.14 +/- 0.39 x 10(- 5) and B (psi(3686)-> Xi (1530)(0) (Xi) over bar (0) = (0.53 +/- 0.04 +/- 0.03) x 10(-5). Here, the first and second uncertainties are statistical and systematic, respectively. In addition, the parameter associated with the angular distribution for the decay psi (3686) ->Xi (1530)(0) (Xi) over bar (1530)(0) is determined to be alpha= 1/4 0.32 +/- 0.19 +/- 0.07, in agreement with theoretical predictions within one standard deviation.eninfo:eu-repo/semantics/openAccessArticle1049WOS:000725012100029Q110.1103/PhysRevD.104.092012Q1