Evidence for the Production of Prompt Like-Sign Dimuon Events by High-Energy Neutrinos
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We report the observation of 46 -- events in high-energy neutrino-nucleon collisions at Fermilab. Measurement of the production rate of the -- events relative to that of -+ events in targets of different hadronic absorption lengths give Nprompt(--)Nprompt(-+)=0.060.05 for p>5 GeV/c, and 0.120.05 for p>10 GeV/c. The properties and possible origins of these events are discussed. 1978 The American Physical Society.