Upper limits to νμ-ντ oscillation and νμ-τ coupling

N. Ushida, T. Kondo, G. Fujioka, H. Fukushima, Y. Takahashi, S. Tatsumi, C. Yokoyama, Y. Homma, Y. Tsuzuki, S. Bahk, C. Kim, J. Park, J. Song, D. Bailey, S. Conetti, J. Fischer, J. Trischuk, H. Fuchi, K. Hoshino, M. MiyanishiK. Niu, K. Niwa, H. Shibuya, Y. Yanagisawa, S. Errede, M. Gutzwiller, S. Kuramata, N. W. Reay, K. Reibel, T. A. Romanowski, R. Sidwell, N. R. Stanton, K. Moriyama, H. Shibata, T. Hara, O. Kusumoto, Y. Noguchi, M. Teranaka, H. Okabe, J. Yokota, J. Harnois, C. Hebert, J. Hebert, S. Lokanathan, B. McLeod, S. Tasaka, P. Davis, J. Martin, D. Pitman, J. D. Prentice, P. Sinervo, T. S. Yoon, H. Kimura, Y. Maeda

Research output: Contribution to journalArticlepeer-review


A search for τ lepton production in a sample of 1241 neutrino interactions with use of a hybrid emulsion spectrometer in the Fermilab wide-band neutrino beam is reported. No such events are seen and an upper limit to the νμ-τ coupling of 0.63% (90% C.L.) is set. For νμ-ντ oscillations this sets a limit of |mνμ2- mντ2|<3.0 eV2 (90% C.L.) for maximum mixing.

Original languageEnglish (US)
Pages (from-to)1694-1697
Number of pages4
JournalPhysical review letters
Issue number24
StatePublished - 1981
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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