Çetin, Serkant Ali2020-06-022020-06-022019-09-302470-00292470-0010https://hdl.handle.net/11411/2129https://doi.org/10.1103/PhysRevD.100.052015Using a data sample of 1.31 x 10(9) J/psi events collected with the BESIII detector, a search for eta' -> gamma gamma eta via J/psi ->gamma eta' is performed for the first time. No significant eta' signal is observed in the gamma gamma eta invariant mass spectrum, and the branching fraction of eta' -> gamma gamma eta is determined to be less than 1.33 x 10(-4) at the 90% confidence level.eninfo:eu-repo/semantics/openAccessArticle2-s2.0-8507297627010.1103/PhysRevD.100.052015Q1WOS:000488261300001