Ablikim, M.Achasov, M.N.Adlarson, P.Ai, X.C.Aliberti, R.Amoroso, A.Çetin, Serkant Ali2024-05-192024-05-1920242470-0010https://doi.org/10.1103/PhysRevD.109.072010https://hdl.handle.net/20.500.12713/4522Based on 4.5 fb-1 of e+e- collision data accumulated at center-of-mass energies between 4599.53 and 4698.82 MeV with the BESIII detector, we measure the absolute branching fraction of the Cabibbo-favored decay ?c+?nKS0?+ with the precision improved by a factor of 2.8 and report the first evidence for the singly-Cabibbo-suppressed decay ?c+?nKS0K+. The branching fractions for ?c+?nKS0?+ and ?c+?nKS0K+ are determined to be (1.86±0.08±0.04)×10-2 and (3.9-1.4+1.7±0.3)×10-4, respectively, where the first uncertainties are statistical and the second ones are systematic. © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.eninfo:eu-repo/semantics/openAccessArticle10972-s2.0-8519107583510.1103/PhysRevD.109.072010Q1