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Limits on the neutrino oscillations ν¯μν¯e and ν¯μν¯τ using a narrow-band beam

G. N. Taylor*, R. J. Cence, F. A. Harris, M. D. Jones, S. I. Parker, M. W. Peters, V. Z. Peterson, and V. J. Stenger

H. C. Ballagh, H. H. Bingham, T. Lawry, J. Lys, M. L. Stevenson, and G. P. Yost

D. Gee, F. R. Huson, E. Schmidt, W. Smart, and E. Treadwell

  • Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822

  • Department of Physics and Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720

  • Fermi National Accelerator Laboratory, Batavia, Illinois 60510

  • *Now at University of Oxford, Nuclear Physics Laboratory, Oxford, England.
  • Also at Department of Physics and Astronomy, University of Hawaii at Manoa, Honololu, Hawaii 96822.
  • Now at Department of Physics, University of Wisconsin—Madison, Madison, Wisconsin 53706.

Phys. Rev. D 28, 2705 – Published 1 December, 1983

DOI: https://doi.org/10.1103/PhysRevD.28.2705

Abstract

In an exposure of the Fermilab 15-ft bubble chamber to the dichromatic antineutrino beam, 427 ν¯μ charged-current interactions were obtained. Taking advantage of the small and well understood background flux of ν¯e's in the dichromatic ν¯μ beam, upper limits on the rates of antineutrino oscillations are obtained, with the precision limited by statistical rather than systematic errors, in contrast to previous experiments. The 90%-C.L. upper limits obtained for the average oscillation probabilities indicated are P(ν¯μν¯e)<6.5×103 and P(ν¯μν¯τ)<4.4×102. The mean value of the distance from the neutrino-production point to the bubble chamber divided by the neutrino energy, lE, is 0.03 m/MeV.

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