Abstract
Abstract A detailed investigation into nuclear collisions of energy between 1012-1013 ev is reported. The ratio of πo-mesons to charged shower particles has been determined with high statistical accuracy yielding a value R = 0.383+0.044. The central cores of the ‘jets’ have been carefully scanned to detect secondary interactions produced by the shower particles and the ratio, Q, of the number of interactions produced by neutral to the number produced by charged shower particles has been obtained. Q = 0.25+0.09. If we assume that in nuclear collisions of very high energy, neutral and charged particles (other than π-mesons) are created in approximately equal numbers and that the interaction mean free path for such praticles does not differ appreciably from that of π-mesons, the values R and Q enable an estimate to be made of the fraction of shower particles which are not π-mesons. The results indicate that ∼25% of the shower particles must be heavy mesons, hyperons, nucleon-antinucleon pairs, and ejected nu...
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