Evidence for nu_mu -> nu_e Neutrino Oscillations from LSND
Abstract
A search for nu_mu -> nu_e oscillations has been conducted with the LSND apparatus at the Los Alamos Meson Physics Facility. Using nu_mu from pi^+ decay in flight, the nu_e appearance is detected via the charged-current reaction C(nu_e,e^-)X. Two independent analyses observe a total of 40 beam-on high-energy electron events (60 < E_e < 200 MeV) consistent with the above signature. This number is significantly above the 21.9 +- 2.1 events expected from the nu_e contamination in the beam and the beam-off background. If interpreted as an oscillation signal, the observed oscillation probability of (2.6 +- 1.0 +- 0.5) x 10^{-3} is consistent with the previously reported nu_mu_bar -> nu_e_bar oscillation evidence from LSND.
Keywords
Cite
@article{arxiv.nucl-ex/9709006,
title = {Evidence for nu_mu -> nu_e Neutrino Oscillations from LSND},
author = {LSND Collaboration and C. Athanassopoulos and L. B. Auerbach and R. L. Burman and D. O. Caldwell and E. D. Church and I. Cohen and J. B. Donahue and A. Fazely and F. J. Federspiel and G. T. Garvey and R. M. Gunasingha and R. Imlay and K. Johnston and H. J. Kim and W. C. Louis and R. Majkic and K. McIlhany and W. Metcalf and G. B. Mills and R. A. Reeder and V. Sandberg and D. Smith and I. Stancu and W. Strossman and R. Tayloe and G. J. VanDalen and W. Vernon and N. Wadia and J. Waltz and D. H. White and D. Works and Y. Xiao and S. Yellin},
journal= {arXiv preprint arXiv:nucl-ex/9709006},
year = {2008}
}
Comments
10 pages (LaTeX), 3 figures (PostScript), submitted to Phys.Rev.Lett. Additional information at http://nu1.lampf.lanl.gov/~lsnd