Evidence for muon neutrino oscillation in an accelerator-based experiment

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Date
2005-03-04
Author
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.
Fechner, M.
Fernandez, E.
Fukuda, Y.
Gomez-Cadenas, J.
Gran, R.
Hara, T.
Hasegawa, M.
Hasegawa, T.
Hayashi, K.
Hayato, Y.
Helmer, R. L.
Hill, J.
Hiraide, K.
Hosaka, J.
Ichikawa, A. K.
Iinuma, M.
Ikeda, A.
Inagaki, T.
Ishida, T.
Ishihara, K.
Ishii, T.
Ishitsuka, M.
Itow, Y.
Iwashita, T.
Jang, H. I.
Jeon, E. J.
Jeong, I. S.
Joo, K.
Jover, G.
Jung, C. K.
Kajita, T.
Kameda, J.
Kaneyuki, K.
Kato, I.
Kearns, E.
Kerr, D.
Kim, C. O.
Khabibullin, M.
Khotjantsev, A.
Kielczewska, D.
Kim, J. Y.
Kim, S.
Kitching, P.
Kobayashi, K.
Kobayashi, T.
Konaka, A.
Koshio, Y.
Kropp, W.
Kubota, J.
Kudenko, Y.
Kuno, Y.
Kutter, T.
Learned, J.
Likhoded, S.
Lim, I. T.
Loverre, P. F.
Ludovici, L.
Maesaka, H.
Mallet, J.
Mariani, Camillo
Maruyama, T.
Matsuno, S.
Matveev, V.
Mauger, C.
McConnel, K.
McGrew, C.
Mikheyev, S.
Minamino, A.
Mine, S.
Mineev, O.
Mitsuda, C.
Miura, M.
Moriguchi, Y.
Morita, T.
Moriyama, S.
Nakadaira, T.
Nakahata, M.
Nakamura, K.
Nakano, I.
Nakaya, T.
Nakayama, S.
Namba, T.
Nambu, R.
Nawang, S.
Nishikawa, K.
Nitta, K.
Nova, F.
Novella, P.
Obayashi, Y.
Okada, A.
Okumura, K.
Oser, S. M.
Oyama, Y.
Pac, M. Y.
Pierre, F.
Rodriguez, A.
Saji, C.
Sakuda, M.
Sanchez, F.
Sarrat, A.
Sasaki, T.
Scholberg, K.
Schroeter, R.
Sekiguchi, M.
Sharkey, E.
Shiozawa, M.
Shiraishi, K.
Sitjes, G.
Smy, M.
Sobel, H.
Stone, J.
Sulak, L.
Suzuki, A.
Suzuki, Y.
Takahashi, T.
Takenaga, Y.
Takeuchi, Y.
Taki, K.
Takubo, Y.
Tamura, N.
Tanaka, M.
Terri, R.
T'Jampens, S.
Tornero-Lopez, A.
Totsuka, Y.
Ueda, S.
Vagins, M.
Walter, C. W.
Wang, W.
Wilkes, R. J.
Yamada, S.
Yamamoto, S.
Yanagisawa, C.
Yershov, N.
Yokoyama, H.
Yokoyama, M.
Yoo, J.
Yoshida, M.
Zalipska, J.
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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 νμ, 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).
URI
http://hdl.handle.net/10919/81646
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