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Published June 17, 1974 | Published
Journal Article Open

Gauge-Theory Heavy Muons: An Experimental Search

Abstract

We have observed 1522 neutrino events with a μ- secondary and 8 events with a μ+ secondary from a beam consisting mostly of neutrinos. The μ+ events are consistent in number and kinematic properties with beam contamination by ν̅ μ. This experiment sees no evidence for production of heavy positively charged leptons. Assuming a coupling constant equal to the universal Fermi constant and a branching ratio to muons B=0.3, our 90% confidence lower limit corresponds to MY+≳8.4 GeV/c^2.

Additional Information

©1974 The American Physical Society. Received 1 April 1974. Work supported in part by the U.S. Atomic Energy Commission. Prepared under Contract AT(11-1)-68 for the San Francisco Operations Office, U.S. Atomic Energy Commission. [H.S. was a] Swiss National Fund for Scientific Research Fellow.

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