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Observation of the decay ?(3686) ? ? ?? ¯ + and measurement of its angular distribution
(Springer link, 2022) Ablikim M.; Achasov M.N.; Adlarson P.; Albrecht M.; Aliberti R.; Amoroso A.; An M.R.; An Q.; Bai X.H.; Bai Y.; Bakina O.; Baldini Ferroli R.; Çetin, Serkant Ali; Kolcu, Onur Buğra
Using (448.1 ± 2.9) × 106?(3686) events collected with the BESIII detector at the BEPCII collider, the decay ?(3686) ?? ?? ¯ + is observed for the first time with a branching fraction of (2.82 ± 0.04stat.± 0.08syst.) × 10?4, and the angular parameter ??? is measured to be 0.96 ± 0.09stat.± 0.03syst.. [Figure not available: see fulltext.] © 2022, The Author(s).
Search for the weak decay ?(3686) ? ?+c ?¯? + c.c.
(2023) Achasov M.N.; Adlarson P.; Albrecht M.; Amoroso A.; An M.R.; Çetin, Serkant Ali; Kolcu, Onur Buğra
Using (448.1±2.9)×106 ?(3686) events collected with the BESIII detector, we perform the first search for the weak baryonic decay ?(3686) ? ?+c ?¯? + c.c.. The analysis procedure is optimized using a blinded method. No significant signal is observed, and the upper limit on the branching fraction (B) of ?(3686) ? ?+c ?¯? + c.c. is set as 1.4 × 10?5 at the 90% confidence level. © 2023 Institute of Physics Publishing. All rights reserved.