Abstract

The mass spectra of recoil nucleon states from the inelastic production of ρ0 mesons by incident pions of 12 and 18 GeV/c have been studied in a spark chamber experiment. From over 2000 events, qualitative agreement with a one-pion-exchange calculation is found, both in the magnitudes of the cross-sections and in the missing mass spectra of the nucleon states. The dominance of this channel over elastic ρ0 production and the consequences of extending the model to very high energies are discussed.

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