Abstract
Fifty jets recorded by an installation consisting of an ionization calorimeter and a cloud chamber have been analyzed. The mean energy of the primaries was 350 GeV and the mean number of charged secondary particles was [Formula: see text]. The target was made of carbon with a thickness of 0.08 interaction mean free path length. It is shown that in the energy region under investigation γc determined by Castagnoli's method is overestimated. It is also concluded that the distribution in Duller–Walker coordinates will give no information about the angles of emission of secondaries in their fireball rest system. If there are not more than two fireballs in the energy region [Formula: see text], then their mean mass is about 3 GeV. The distribution of 4-momentum transfers was measured; the mean value is of the order [Formula: see text]. It was possible to estimate the inelasticity coefficients by independent methods. The mean fraction of the energy transferred to π0 mesons was [Formula: see text] and to the charged mesons [Formula: see text], and the total inelasticity coefficient in the laboratory system was [Formula: see text].
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