Evidence for oscillation of atmospheric neutrinos

Published

Journal Article

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 νμ↔ντ oscillations with sin22θ>0.82 and 5×10−4<Δm2<6×10−3eV2 at 90% confidence level. © 1998 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Fukuda, Y; Hayakawa, T; Ichihara, E; Inoue, K; Ishihara, K; Ishino, H; Itow, Y; Kajita, T; Kameda, J; Kasuga, S; Kobayashi, K; Kobayashi, Y; Koshio, Y; Miura, M; Nakahata, M; Nakayama, S; Okada, A; Okumura, K; Sakurai, N; Shiozawa, M; Suzuki, Y; Takeuchi, Y; Totsuka, Y; Yamada, S; Earl, M; Habig, A; Kearns, E; Messier, MD; Scholberg, K; Stone, JL; Sulak, LR; Walter, CW; Goldhaber, M; Barszczxak, T; Casper, D; Gajewski, W; Halverson, PG; Hsu, J; Kropp, WR; Price, LR; Reines, F; Smy, M; Sobel, HW; Vagins, MR; Ganezer, KS; Keig, WE; Ellsworth, RW; Tasaka, S; Flanagan, JW; Kibayashi, A; Learned, JG; Matsuno, S; Stenger, VJ; Takemori, D; Ishii, T; Kanzaki, J; Kobayashi, T; Mine, S; Nakamura, K; Nishikawa, K; Oyama, Y; Sakai, A; Sakuda, M; Sasaki, O; Echigo, S; Kohama, M; Suzuki, AT; Haines, TJ; Blaufuss, E; Kim, BK; Sanford, R; Svoboda, R; Chen, ML; Conner, Z; Goodman, JA; Sullivan, GW; Hill, J; Jung, CK; Martens, K; Mauger, C; Mc Grew, C; Sharkey, E; Viren, B; Yanagisawa, C; Doki, W; Miyano, K; Okazawa, H; Saji, C; Takahata, M; Nagashima, Y; Takita, M; Yamaguchi, T; Yoshida, M; Kim, SB; Etoh, M; Fujita, K

Published Date

  • January 1, 1998

Published In

Volume / Issue

  • 81 / 8

Start / End Page

  • 1562 - 1567

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/PhysRevLett.81.1562

Citation Source

  • Scopus