Gamma and pizero production in e+e- annihilation

Inclusive cross sections of γ's and π0 mesons in hadronic events produced by electron-positron annihilation for the center-of-mass energy range 4.9 to 7.4 GeV are presented. Scale invariance of the inclusive spectra is exhibited in this energy range, and their normalization and shape are seen to be consistent with those of spectra arising from the decay of the π0. The fraction of center-of-mass energy carried away by the γ's at high energies is found to be < E/sub γ//E/sub c.m./> = 0.24 +- 0.01. The π0 inclusive cross section is seen to be consistent in normalization and shape with half the charged-π cross section between x = 0.15 and 0.75, with an integrated inclusive cross-section ratio of sigma(π0)/[sigma(π+) + sigma(π-)] = 0.48 +- 0.05. 60 figures, 7 tables