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Phys. Rev. Lett. 77, 3082 - 3085 (1996)

Evidence for ν̅ μ→ν̅ e Oscillations from the LSND Experiment at the Los Alamos Meson Physics Facility

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C. Athanassopoulos et al. LSND Collaboration
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Received 9 May 1996

A search for ν̅ μ→ν̅ e oscillations has been conducted at the Los Alamos Meson Physics Facility by using ν̅ μ from μ+ decay at rest. The ν̅ e are detected via the reaction ν̅ e p→e+ n, correlated with a γ from np→dγ ( 2.2 MeV). The use of tight cuts to identify e+ events with correlated γ rays yields 22 events with e+ energy between 36 and 60 MeV and only 4.6±0.6 background events. A fit to the e+ events between 20 and 60 MeV yields a total excess of 51.0-19.5+20.2±8.0 events. If attributed to ν̅ μ→ν̅ e oscillations, this corresponds to an oscillation probability of ( 0.31±0.12±0.05)%.


©1996 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.77.3082
DOI: 10.1103/PhysRevLett.77.3082
PACS: 14.60.Pq, 13.15.+g

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