Charmonium decays to gamma pi(0), gamma eta, and gamma eta ' (Physical Review D, 2009)

(untitled) - Pedlar, T; Xavier, J; Cronin-Hennessy, D; Gao, K; Hietala, J; Klein, T; Poling, R; Zweber, P; Dobbs, S; Metreveli, Z; Seth, K; Tan, B; et al.