%0 Journal Article
%T Evidence for psi' decays into gamma pi^0 and gamma eta
%A The BESIII Collaboration
%J Physics
%D 2010
%I arXiv
%R 10.1103/PhysRevLett.105.261801
%X The decays psi'->gamma pi^0, gamma eta and gamma eta' are studied using data collected with the BESIII detector at the BEPCII e^+e^- collider. Processes psi'->gamma pi^0 and psi'->gamma eta are observed for the first time with signal significances of 4.6 sigma and 4.3 sigma, respectively. The branching fractions are determined to be: B(psi'->gamma pi^0)=(1.58+-0.40+-0.13)x10^{-6}, B(psi'->gamma eta)=(1.38+-0.48+-0.09)x10^{-6}, and B(psi'->gamma eta')=(126+-3+-8) x 10^{-6}, where the first errors are statistical and the second ones systematic.
%U http://arxiv.org/abs/1011.0885v1