This investigation was performed with a 24-liter propane bubble chamber [i] and is a continu- ation of our previous work on the production of strange particles by 7-8-BeV 1r- mesons on hydrogen and carbon. [ 2 - 5 ] The properties of 1r 0 mesons inferred from the y quanta accom- panying A and K 0 production are given, and are compared with the properties of 1r+ and 7r- mesons emitted in A and K 0 production processes. The possibility of a resonance with radi- ative decay is noted.
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The c .m.s. angular distributions of protons and 1r mesons emitted in emulsions in protonproton collisions were measured. The proton angular distribution is symmetric and possesses a pronounced anisotropy. The n-meson distribution is symmetric and more isotropic. The angular dependence of the total energy in the c .m .s. has been determined for protons. It is shown that, on the average, protons expend about 74% of their energy in the c.m.s. on meson production. Within the limits of experimental error, the mean values of the transverse momentum and the total energy in the c .m.s. are the same for various multiplicities.
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