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VOLUME 28 (1978) | ISSUE 7 | PAGE 490
Observation of decays of short-lived particles in an emulsion exposed to 400-GeV/c protons
The nine events of short-lived particle decay observed in an emulsion bombarded with 400-GeV/c protons are interpreted as decays of charmed particles (mainly baryons). An estimate of the lifetime yielded a value 1.2x10" 14 sec. The cross section for the production of charmed particles was found to be —100 μο/nucleon.