Some results on heavy-and shower-particle multiplicities produced in interactions of 340-GeV pions in nuclear emulsion are presented and compared with similar results in proton-nucleus interactions at different energies. Values of (A',) in a-A interactions are found to be less than its value in p A interactions at similar energies. This is understood in terms of additive quark model. The result on mean normalized multiplicity reveals that the values of R,, are almost constant in the forward direction for all …
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