%0 Journal Article
%T Search for $¦Ð^0 \to ¦Í_¦Ì\bar¦Í_¦Ì$ Decay in LSND
%A L. B. Auerbach
%A R. L. Burman
%A D. O. Caldwell
%A E. D. Church
%A A. K. Cochran
%A J. B. Donahue
%A A. R. Fazely
%A G. T. Garvey
%A R. M. Gunasingha
%A R. L. Imlay
%A G. Kahrimanis
%A W. C. Louis
%A R. Majkic
%A A. Malik
%A K. L. McIlhany
%A W. J. Metcalf
%A G. B. Mills
%A D. Rupnik
%A V. D. Sandberg
%A D. Smith
%A R. F. Somodi
%A I. Stancu
%A W. D. Strossman
%A M. Sung
%A R. Tayloe
%A G. J. VanDalen
%A W. Vernon
%A N. Wadia
%A D. H. White
%A S. Yellin
%A H. Yi
%J Statistics
%D 2003
%I arXiv
%R 10.1103/PhysRevLett.92.091801
%X We observe a net beam-excess of $8.7 \pm 6.3$ (stat) $\pm 2.4$ (syst) events, above 160 MeV, resulting from the charged-current reaction of $\nu_{\mu}$ and/or $\bar\nu_{\mu}$ on C and H in the LSND detector. No beam related muon background is expected in this energy regime. Within an analysis framework of $\pi^0 \to \nu_{\mu}\bar\nu_{\mu}$, we set a direct upper limit for this branching ratio of $\Gamma(\pi^0 \to \nu_\mu \bar\nu_\mu) / \Gamma(\pi^0 \to all) < 1.6 \times 10^{-6}$ at 90% confidence level.
%U http://arxiv.org/abs/hep-ex/0310060v1