Observation of an Anomalous Number of Dimuon Events in a High Energy Neutrino Beam

Abstract

A search for long-lived neutral particles (N^0's) with masses above 2.2 GeV/c^2 that decay into at least one muon has been performed using an instrumented decay channel at the NuTeV experiment at Fermilab. Data were examined for particles decaying into the final states mu mu, mu e, and mu pi. Three mu mu events were observed over an expected Standard Model background of 0.069 +/- 0.010 events; no events were observed in the other modes.

arXiv comment5 pages, 3 figures, Submitted to Phys. Rev. Lett

References in corpus (6)

• An Improved Determination of ${\alpha }_S$ From Neutrino-Nucleon Scattering
• Search for Neutral Heavy Leptons in a High-Energy Neutrino Beam
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• Precision Calibration of the NuTeV Calorimeter
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