Radiative angular distributions from cc-bar states directly produced by pp-bar annihilation.

We present formulas, based on the helicity formalism, for the angular distributions of the radiative decay products involving eta/sub c//sup '/, psi, chi/sub J/, and /sup 1/P/sub 1/ cc-bar states formed in pp-bar collisions. Normalized joint angular observables are expressed in terms of allowed multipole transitions and the ratio of pp-bar production helicity amplitudes.