A Study of J/psi-->gamma gamma V(rho,phi) Decays with the BESII Detector

BES Collaboration

Using a sample of $58\times 10^6$ $J/\psi$ events collected with the BESII detector, radiative decays $J/\psi \to \gamma \gamma V$, where $V=\rho$ or $\varphi$, are studied. A resonance around 1420 MeV/c${}^2$ (…