Authors
Yoshiyuki Fukuda, T Hayakawa, E Ichihara, K Inoue, K Ishihara, Hirokazu Ishino, Y Itow, T Kajita, J Kameda, S Kasuga, K Kobayashi, Y Kobayashi, Y Koshio, M Miura, Masayuki Nakahata, S Nakayama, A Okada, K Okumura, N Sakurai, M Shiozawa, Y Suzuki, Y Takeuchi, Y Totsuka, S Yamada, M Earl, A Habig, E Kearns, MD Messier, K Scholberg, JL Stone, LR Sulak, CW Walter, M Goldhaber, T Barszczxak, D Casper, W Gajewski, PG Halverson, J Hsu, WR Kropp, LR Price, F Reines, M Smy, HW Sobel, MR Vagins, KS Ganezer, WE Keig, RW Ellsworth, S Tasaka, JW Flanagan, A Kibayashi, JG Learned, S Matsuno, VJ Stenger, D Takemori, T Ishii, J Kanzaki, T Kobayashi, S Mine, K Nakamura, K Nishikawa, Y Oyama, A Sakai, Makoto Sakuda, O Sasaki, S Echigo, M Kohama, AT Suzuki, TJ Haines, E Blaufuss, BK Kim, R Sanford, R Svoboda, ML Chen, Z Conner, JA Goodman, GW Sullivan, J Hill, CK Jung, K Martens, C Mauger, C McGrew, E Sharkey, B Viren, C Yanagisawa, W Doki, K Miyano, H Okazawa, C Saji, M Takahata, Y Nagashima, M Takita, T Yamaguchi, M Yoshida, SB Kim, M Etoh, K Fujita, A Hasegawa, T Hasegawa, S Hatakeyama, T Iwamoto, M Koga, T Maruyama, H Ogawa, J Shirai, A Suzuki, F Tsushima, M Koshiba, M Nemoto, K Nishijima, T Futagami, Y Hayato, Y Kanaya, K Kaneyuki, Y Watanabe, D Kielczewska, RA Doyle, JS George, AL Stachyra, LL Wai, RJ Wilkes, KK Young, Super-Kamiokande Collaboration
Publication date
1998/8/24
Journal
Physical review letters
Volume
81
Issue
8
Pages
1562
Publisher
American Physical Society
Description
We present an analysis of atmospheric neutrino data from a 33.0 kton yr (535-day) exposure of the Super-Kamiokande detector. The data exhibit a zenith angle dependent deficit of muon neutrinos which is inconsistent with expectations based on calculations of the atmospheric neutrino flux. Experimental biases and uncertainties in the prediction of neutrino fluxes and cross sections are unable to explain our observation. The data are consistent, however, with two-flavor ν μ↔ ν τ oscillations with sin 2 2 θ> 0.82 and 5× 10− 4< Δ m 2< 6× 1 0− 3 eV 2 at 90% confidence level.
Total citations
Scholar articles
Y Fukuda, T Hayakawa, E Ichihara, K Inoue, K Ishihara… - Physical review letters, 1998