Evidence for neutrino oscillations from the observation of (ν)over-barc appearance in a (ν)over-barμ beam -: art. no. 112007

A search for <()over bar>(mu) --><()over bar>(e) oscillations was conducted by the Liquid Scintillator Neutrino Detector at the Los Alamos Neutron Science Center using <()over bar>(mu) from mu (+) decay at rest. A total excess of 87.9+/-22.4+/-6.0 events consistent with <()over bar>(e)p-->e(+) n scattering was observed above the expected background. This excess corresponds to an oscillation probability of (0.264+/-0.067+/-0.045)%, which is consistent with an earlier analysis. In conjunction with other known limits on neutrino oscillations, the LSND data suggest that neutrino oscillations occur in the 0.2-10 eV(2)/c(4) Deltam(2) range, indicating a neutrino mass greater than 0.4 eV/c(2).