Ablikim, M.Achasov, M.N.Adlarson, P.Afedulidis, O.Ai, X.C.Aliberti, R.Çetin, Serkant Ali2024-05-192024-05-1920242470-0010https://doi.org/10.1103/PhysRevD.109.072003https://hdl.handle.net/20.500.12713/4520A search has been performed for the semileptonic decays D0?KS0K-e+?e, D+?KS0KS0e+?e, and D+?K+K-e+?e, using 7.9 fb-1 of e+e- annihilation data collected at the center-of-mass energy s=3.773 GeV by the BESIII detector operating at the BEPCII collider. No significant signals are observed, and upper limits are set at the 90% confidence level of 2.13×10-5, 1.54×10-5, and 2.10×10-5 for the branching fractions of D0?KS0K-e+?e, D+?KS0KS0e+?e, and D+?K+K-e+?e, respectively. © 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-s2.0-8518990604810.1103/PhysRevD.109.072003Q1