It is shown that in interactions of protons at 200, 300, and 400 GeV, and negative pions at 300 GeV with emulsion nuclei, the scaling of the multiplicity of relativistic charged secondaries is valid and described by a linear function of the scaling variable, z.
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Total reaction cross sections of 20 MeV π − and 30 MeV π + and π − have been measured for carbon and nickel targets. The experimental results are in very good agreement with calculations based on commonly accepted pion-nucleus potentials but disagree with calculations based on the potentials associated with the so-called pionic atom anomaly.
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