Ablikim, M.Achasov, M. N.Adlarson, P.Albrecht, M.Aliberti, R.Amoroso, A.Çetin, Serkant Ali2024-05-192024-05-1920232470-00102470-0029https://doi.org10.1103/PhysRevD.107.052002https://hdl.handle.net/20.500.12713/5799The Cabibbo-allowed weak radiative decay A+c -> E+gamma has been searched for in a sample of A+c over bar A- c pairs produced in e+e- annihilations, corresponding to an integrated luminosity of 4.5 fb-1 collected with the BESIII detector at center-of-mass energies between 4.60 and 4.70 GeV. No excess of signal above background is observed, and we set an upper limit on the branching fraction of this decay to be B(A+c -> E+gamma) < 4.4 x 10-4 at a confidence level of 90%, which is in agreement with Standard Model expectations.eninfo:eu-repo/semantics/openAccessTofArticle1075WOS:0009894230000062-s2.0-85152020658N/A10.1103/PhysRevD.107.052002Q1