Evidence for neutrino oscillations from the observation of ν̄e appearance in a ν̄μ beam

Authors

A. Aguilar, Los Alamos National Laboratory
L. B. Auerbach, Temple University
R. L. Burman, Los Alamos National Laboratory
D. O. Caldwell, University of California, Santa Barbara
E. D. Church, University of California, Riverside
A. K. Cochran, Southern University and A&M College
J. B. Donahue, Los Alamos National Laboratory
A. Fazely, Southern University and A&M College
G. T. Garvey, Los Alamos National Laboratory
R. M. Gunasingha, Southern University and A&M College
R. Imlay, Louisiana State University
W. C. Louis, Los Alamos National Laboratory
R. Majkic, Temple University
A. Malik, Louisiana State University
W. Metcalf, Louisiana State University
G. B. Mills, Los Alamos National Laboratory
V. Sandberg, Los Alamos National Laboratory
D. Smith, Embry-Riddle Aeronautical University, Prescott
I. Stancu, University of California, Riverside
M. Sung, Louisiana State University
R. Tayloe, Los Alamos National Laboratory
G. J. VanDalen, University of California, Riverside
W. Vernon, University of California, San Diego
N. Wadia, Louisiana State University
D. H. White, Los Alamos National Laboratory
S. Yellin, University of California, Santa Barbara

Document Type

Article

Publication Date

12-1-2001

Abstract

A search for ν̄μ→ν̄e oscillations was conducted by the Liquid Scintillator Neutrino Detector at the Los Alamos Neutron Science Center using ν̄μ from μ+ decay at rest. A total excess of 87.9±22.4±6.0 events consistent with ν̄ep→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 eV2/c4 Δm2 range, indicating a neutrino mass greater than 0.4 eV/c2. ©2001 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review D

Recommended Citation

Aguilar, A., Auerbach, L., Burman, R., Caldwell, D., Church, E., Cochran, A., Donahue, J., Fazely, A., Garvey, G., Gunasingha, R., Imlay, R., Louis, W., Majkic, R., Malik, A., Metcalf, W., Mills, G., Sandberg, V., Smith, D., Stancu, I., Sung, M., Tayloe, R., VanDalen, G., Vernon, W., Wadia, N., White, D., & Yellin, S. (2001). Evidence for neutrino oscillations from the observation of ν̄e appearance in a ν̄μ beam. Physical Review D, 64 (11) https://doi.org/10.1103/PhysRevD.64.112007