\ga\ga and g g decay rates for equal mass heavy quarkonia

James T. Laverty, Stanley F. Radford, Wayne W. Repko

We present a calculation of the two-photon and two-gluon widths for the equal mass quarkonium states ${}^1{S}_0$, ${}^3{P}_0$ and ${}^3{P}_2$ of the charmonium and upsilon systems. The approac…