Data on multiplicities of charged particles produced in proton-nucleus and nucleus-nucleus collisions at 200 GeV per nucleon are presented. It is shown that the mean multiplicity of negative particles is proportional to the mean number of nucleons participating in the collision both for nucleus-nucleus and proton-nucleus collisions. The apparent consistency of pion multiplicity data with the assumption of an incoherent superposition of nucleon-nucleon collisions is critically discussed.
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MULT NORMALIZED ON INELASTIC EVENTS IN A MODEL DEPENDENT FASION. LOOP-VER.
MULT IN YN ARE NORMYLIZED ON EVENTS WITH AT LEAST ONE CHARGED-.
MULT AND MULT2 IN THIS TABLE NORMALIZED ON EVENT VITH AT LEAST ONE CHARGED- IN THE FINAL STATE.