γ production and multiplicity correlations between neutral and charged pions in pp interactions at 69 GeV/c

Abstract From 3500 γ's observed in the 4.7 m HBC MIRABELLE at Sepukhov, we obtain the dependence on n − of the average number of produced π 0, s, 〈 n 0 〉, and the π 0 π 0 correlation parameter, ƒ 2 00 . We present also the ƒ 2 −− and ƒ 2 +0 parameters and information concerning KNO scaling. Various momentum distributions are given. The invariant γ cross sections distributions are compared with corresponding data at other energies.