Çetin, Serkant Ali2020-12-042020-12-042017-09-25https://hdl.handle.net/11411/2776https://doi.org/10.1103/PhysRevD.96.052003Using a data sample of 448 x 10(6) psi(3686) events collected with the BESIII detector operating at the BEPCII storage ring, the decays psi(3686) -> gamma eta and psi(3686) -> gamma pi(0) are observed with a statistical significance of 7.3 sigma and 6.7 sigma, respectively. The branching fractions are measured to be B(psi(3686) -> gamma eta) = (0.85 +/- 0.18 +/- 0.05) x 10(-6) and B(psi(3686) ->gamma pi(0)) = (0.95 +/- 0.16 +/- 0.05) x 10(-6). In addition, we measure the branching fraction of psi(3686) -> gamma eta' to be B(psi(3686) -> gamma eta') = (125.1 +/- 2.2 +/- 6.2)x10(-6), which represents an improvement of precision over previous results.eninfo:eu-repo/semantics/openAccessArticle2-s2.0-8503110787910.1103/PhysRevD.96.052003Q1Q1WOS:000411579700001