Ablikim, Medina N.Achasov, M. N.Adlarson, PatrikAlbrecht, MalteAliberti, Riccardo2022-11-072022-11-072022Ablikim, M., Achasov, M. N., Adlarson, P., Albrecht, M., Aliberti, R., Amoroso, A., . . . (BESIII Collaboration). (2022). Measurement of branching fractions of singly cabibbo-suppressed decays λc+ → ς0K+ and ς+ KS0. Physical Review D, 106(5) doi:10.1103/PhysRevD.106.052003https://doi.org/10.1103/PhysRevD.106.052003https://hdl.handle.net/20.500.12713/3237Based on a sample of 4.5 fb-1 of e+e- annihilation data collected in the energy region between 4.6 GeV and 4.7 GeV with the BESIII detector at BEPCII, two singly Cabibbo-suppressed decays ?c+??0K+ and ?c+??+KS0 are studied. The ratio of the branching fraction B(?c+??0K+) relative to B(?c+??0?+) is measured to be 0.0361±0.0073(stat.)±0.0005(syst.), and the ratio of B(?c+??+KS0) relative to B(?c+??+?+?-) is measured to be 0.0106±0.0031(stat.)±0.0004(syst.). After taking the world-average branching fractions of the reference decay channels, the branching fractions B(?c+??0K+) and B(?c+??+KS0) are determined to be (4.7±0.9(stat.)±0.1(syst.)±0.3(ref.))×10-4 and (4.8±1.4(stat.)±0.2(syst.)±0.3(ref.))×10-4, respectively. The branching fraction of the ?c+??+KS0 decay is measured for the first time. © 2022 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/openAccessArticle1065WOS:0008906651000012-s2.0-85139953926Q110.1103/PhysRevD.106.052003N/A