Evidence for muon neutrino oscillation in an accelerator-based experiment

E. Aliu, S. Andringa, S. Aoki, J. Argyriades, K. Asakura, R. Ashie, H. Berns, H. Bhang, A. Blondel, S. Borghi, J. Bouchez, J. Burguet-Castell, D. Casper, C. Cavata, A. Cervera, K. O. Cho, J. H. Choi, U. Dore, X. Espinal, M. FechnerE. Fernandez, Y. Fukuda, J. Gomez-Cadenas, R. Gran, T. Hara, M. Hasegawa, T. Hasegawa, K. Hayashi, Y. Hayato, R. L. Helmer, J. Hill, K. Hiraide, J. Hosaka, A. K. Ichikawa, M. Iinuma, A. Ikeda, T. Inagaki, T. Ishida, K. Ishihara, T. Ishii, M. Ishitsuka, Y. Itow, T. Iwashita, H. I. Jang, E. J. Jeon, I. S. Jeong, K. Joo, G. Jover, C. K. Jung, T. Kajita, J. Kameda, K. Kaneyuki, I. Kato, E. Kearns, D. Kerr, C. O. Kim, M. Khabibullin, A. Khotjantsev, D. Kielczewska, J. Y. Kim, S. Kim, P. Kitching, K. Kobayashi, T. Kobayashi, A. Konaka, Y. Koshio, W. Kropp, J. Kubota, Y. Kudenko, Y. Kuno, T. Kutter, J. Learned, S. Likhoded, I. T. Lim, P. F. Loverre, L. Ludovici, H. Maesaka, J. Mallet, C. Mariani, T. Maruyama, S. Matsuno, V. Matveev, C. Mauger, K. McConnel, C. McGrew, S. Mikheyev, A. Minamino, S. Mine, O. Mineev, C. Mitsuda, M. Miura, Y. Moriguchi, T. Morita, S. Moriyama, T. Nakadaira, M. Nakahata, K. Nakamura, I. Nakano, T. Nakaya, S. Nakayama

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Abstract

We present results for νμ oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced νμ beam with a mean energy of 1.3 GeV directed at the Super-Kamiokande detector. We observed the energy-dependent disappearance of vmu;, which we presume have oscillated to ντ. The probability that we would observe these results if there is no neutrino oscillation is 0.0050% (4.0σ). © 2005 The American Physical Society.
Original languageEnglish
Article number081802
JournalPhysical Review Letters
Volume94
DOIs
Publication statusPublished - 4 Mar 2005

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    Aliu, E., Andringa, S., Aoki, S., Argyriades, J., Asakura, K., Ashie, R., Berns, H., Bhang, H., Blondel, A., Borghi, S., Bouchez, J., Burguet-Castell, J., Casper, D., Cavata, C., Cervera, A., Cho, K. O., Choi, J. H., Dore, U., Espinal, X., ... Nakayama, S. (2005). Evidence for muon neutrino oscillation in an accelerator-based experiment. Physical Review Letters, 94, [081802]. https://doi.org/10.1103/PhysRevLett.94.081802