Evidence for muon neutrino oscillation in an accelerator-based experiment

Evidence for muon neutrino oscillation in an accelerator-based experiment

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 ha...

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Hauptverfasser: Aliu i Fusté, Ester, Fernandez, Enrique, Andringa, Sofia, Argyriades, Jeremy, Asakura, Ken, Ashie, R, Berns, Hans Gerd, Bhang, Hyoungchan, Blondel, Alain, Bouchez, Jacques, Burguet-Castell, Jordi, Casper, David W, Cervera-Villanueva, Anselmo, Cho, K. O, Choi, J. H, Dore, Ubaldo, Espinal Curull, Xavi, Fechner, Maximilien, Fukuda, Yoshiyuki, Gomez Cadenas, Juan Jose, Hasegawa, Takuya, Hayashi, K, Helmer, Richard L, Hill, James E, Hiraide, Katsuki, Hosaka, J, Ichikawa, Atsuko K, Iinuma, Masataka, Inagaki, Takao, Ishida, Taku, Ishihara, Kenji, Ishitsuka, Masaki, Jeong, I. S, Joo, Kyung Kwang, Jung, Chang-kee, Kajita, Takaaki, Kameda, Jun, Kaneyuki, Kenji, Kearns, Edward T, Kerr, D, Khotjantsev, Alexey, Kim, Soo-Bang, Kitching, Peter R, Kobayashi, Kazuyoshi, Kobayashi, Takashi, Kubota, J, Kuno, Yoshitaka, Learned, John G, Lim, In Taek, Loverre, Pier Ferruccio, Ludovici, Lucio, Maesaka, Hirokazu, Mariani, Camillo, Mauger, C, McConnel Mahn, Kendall Brianna, McGrew, C, Mikheyev, Stanislav P, Mine, Shun'ichi, Mitsuda, C, Miura, Makoto, Morita, Takeshi, Moriyama, Shigetaka, Nakamura, Kenzo, Nakano, Itsuo, Nakayama, Shoei, Nambu, R, Nambu, T, Nova, Federico, Novella, Pau, Obayashi, Yoshihisa, Okada, Atsushi, Oser, Scott M, Oyama, Yuichi, Pac, Myoung Youl, Pierre, François M, Rodríguez Marrero, Ana Yaiza, Saji, C, Sakuda, Makoto, Sánchez Nieto, Federico, Sarrat, A, Sasaki, Tetsuya, Scholberg, Kate, Schroeter, Raphaël, Shiraishi, K. K, Sitjes, G, Smy, Michael B, Sulak, Lawrence R, Suzuki, Atsumu T, T'Jampens, Stéphane, Takenaga, Yumiko, Takeuchi, Yasuo, Takubo, Yousuke, Tornero-Lopez, A. M, Walter, Christopher W, Wang, Wei F, Wilkes, R. Jeffrey, Yanagisawa, Chiaki, Yoo, Jonghee, K2K Collaboration, American Physical Society
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Zusammenfassung: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).