Ablikim, M.Achasov, M. N.Adlarson, P.Aliberti, R.Amoroso, A.An, M. R.Çetin, Serkant Ali2024-05-192024-05-1920232470-00102470-0029https://doi.org10.1103/PhysRevD.108.012006https://hdl.handle.net/20.500.12713/5813Using o1.0087 similar to 0.0044THORN x 1010 J=. events collected by the BESIII detector at the BEPCII collider, we report the first search for the baryon and lepton number violating decays.0. K-ethorn with.oB - LTHORN 1/4 0 and.0. Kthorne- with j.oB - LTHORNj 1/4 2, where B (L) is the baryon (lepton) number. While no signal is observed, the upper limits on the branching fractions of these two decays are set to Bo.0. K-ethornTHORN < 3.6 x 10- 6 and Bo.0. Kthorne- THORN < 1.9 x 10- 6 at the 90% confidence level, respectively. These results offer a direct probe of baryon number violating interactions involving a strange quark.eninfo:eu-repo/semantics/openAccessOperator AnalysisTofArticle1081WOS:0010634727000032-s2.0-85164963608N/A10.1103/PhysRevD.108.012006Q1