Evidence for oscillation of atmospheric neutrinos

Y. Fukuda, T. Hayakawa, E. Ichihara, K. Inoue, K. Ishihara, Hirokazu Ishino, Y. Itow, T. Kajita, J. Kameda, S. Kasuga, K. Kobayashi, Y. Kobayashi, Yusuke Koshio, M. Miura, M. Nakahata, S. Nakayama, A. Okada, K. Okumura, N. Sakurai, M. Shiozawa & 101 others Y. Suzuki, Y. Takeuchi, Y. Totsuka, S. Yamada, M. Earl, A. Habig, E. Kearns, M. D. Messier, K. Scholberg, J. L. Stone, L. R. Sulak, C. W. Walter, M. Goldhaber, T. Barszczxak, D. Casper, W. Gajewski, P. G. Halverson, J. Hsu, W. R. Kropp, L. R. Price, F. Reines, M. Smy, H. W. Sobel, M. R. Vagins, K. S. Ganezer, W. E. Keig, R. W. Ellsworth, S. Tasaka, J. W. Flanagan, A. Kibayashi, J. G. Learned, S. Matsuno, V. J. 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, A. T. Suzuki, T. J. Haines, E. Blaufuss, B. K. Kim, R. Sanford, R. Svoboda, M. L. Chen, Z. Conner, J. A. Goodman, G. W. Sullivan, J. Hill, C. K. 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, S. B. 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, R. A. Doyle, J. S. George, A. L. Stachyra, L. L. Wai, R. J. Wilkes, K. K. Young

Research output: Contribution to journalArticle

3937 Citations (Scopus)

Abstract

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 sin2 2θ > 0.82 and 5 × 10-4 <Δm2 <6 × 10-3 eV2 at 90% confidence level.

Original languageEnglish
Pages (from-to)1562-1567
Number of pages6
JournalPhysical Review Letters
Volume81
Issue number8
Publication statusPublished - Aug 24 1998
Externally publishedYes

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neutrinos
oscillations
zenith
muons
confidence
detectors
cross sections
predictions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Fukuda, Y., Hayakawa, T., Ichihara, E., Inoue, K., Ishihara, K., Ishino, H., ... Young, K. K. (1998). Evidence for oscillation of atmospheric neutrinos. Physical Review Letters, 81(8), 1562-1567.

Evidence for oscillation of atmospheric neutrinos. / Fukuda, Y.; Hayakawa, T.; Ichihara, E.; Inoue, K.; Ishihara, K.; Ishino, Hirokazu; Itow, Y.; Kajita, T.; Kameda, J.; Kasuga, S.; Kobayashi, K.; Kobayashi, Y.; Koshio, Yusuke; 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, M. D.; Scholberg, K.; Stone, J. L.; Sulak, L. R.; Walter, C. W.; Goldhaber, M.; Barszczxak, T.; Casper, D.; Gajewski, W.; Halverson, P. G.; Hsu, J.; Kropp, W. R.; Price, L. R.; Reines, F.; Smy, M.; Sobel, H. W.; Vagins, M. R.; Ganezer, K. S.; Keig, W. E.; Ellsworth, R. W.; Tasaka, S.; Flanagan, J. W.; Kibayashi, A.; Learned, J. G.; Matsuno, S.; Stenger, V. J.; Takemori, D.; Ishii, T.; Kanzaki, J.; Kobayashi, T.; Mine, S.; Nakamura, K.; Nishikawa, K.; Oyama, Y.; Sakai, A.; Sakuda, Makoto; Sasaki, O.; Echigo, S.; Kohama, M.; Suzuki, A. T.; Haines, T. J.; Blaufuss, E.; Kim, B. K.; Sanford, R.; Svoboda, R.; Chen, M. L.; Conner, Z.; Goodman, J. A.; Sullivan, G. W.; Hill, J.; Jung, C. K.; Martens, K.; Mauger, C.; McGrew, 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, S. B.; Etoh, M.; Fujita, K.; Hasegawa, A.; Hasegawa, T.; Hatakeyama, S.; Iwamoto, T.; Koga, M.; Maruyama, T.; Ogawa, H.; Shirai, J.; Suzuki, A.; Tsushima, F.; Koshiba, M.; Nemoto, M.; Nishijima, K.; Futagami, T.; Hayato, Y.; Kanaya, Y.; Kaneyuki, K.; Watanabe, Y.; Kielczewska, D.; Doyle, R. A.; George, J. S.; Stachyra, A. L.; Wai, L. L.; Wilkes, R. J.; Young, K. K.

In: Physical Review Letters, Vol. 81, No. 8, 24.08.1998, p. 1562-1567.

Research output: Contribution to journalArticle

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, McGrew, 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, Hasegawa, A, Hasegawa, T, Hatakeyama, S, Iwamoto, T, Koga, M, Maruyama, T, Ogawa, H, Shirai, J, Suzuki, A, Tsushima, F, Koshiba, M, Nemoto, M, Nishijima, K, Futagami, T, Hayato, Y, Kanaya, Y, Kaneyuki, K, Watanabe, Y, Kielczewska, D, Doyle, RA, George, JS, Stachyra, AL, Wai, LL, Wilkes, RJ & Young, KK 1998, 'Evidence for oscillation of atmospheric neutrinos', Physical Review Letters, vol. 81, no. 8, pp. 1562-1567.
Fukuda Y, Hayakawa T, Ichihara E, Inoue K, Ishihara K, Ishino H et al. Evidence for oscillation of atmospheric neutrinos. Physical Review Letters. 1998 Aug 24;81(8):1562-1567.
Fukuda, Y. ; Hayakawa, T. ; Ichihara, E. ; Inoue, K. ; Ishihara, K. ; Ishino, Hirokazu ; Itow, Y. ; Kajita, T. ; Kameda, J. ; Kasuga, S. ; Kobayashi, K. ; Kobayashi, Y. ; Koshio, Yusuke ; 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, M. D. ; Scholberg, K. ; Stone, J. L. ; Sulak, L. R. ; Walter, C. W. ; Goldhaber, M. ; Barszczxak, T. ; Casper, D. ; Gajewski, W. ; Halverson, P. G. ; Hsu, J. ; Kropp, W. R. ; Price, L. R. ; Reines, F. ; Smy, M. ; Sobel, H. W. ; Vagins, M. R. ; Ganezer, K. S. ; Keig, W. E. ; Ellsworth, R. W. ; Tasaka, S. ; Flanagan, J. W. ; Kibayashi, A. ; Learned, J. G. ; Matsuno, S. ; Stenger, V. J. ; Takemori, D. ; Ishii, T. ; Kanzaki, J. ; Kobayashi, T. ; Mine, S. ; Nakamura, K. ; Nishikawa, K. ; Oyama, Y. ; Sakai, A. ; Sakuda, Makoto ; Sasaki, O. ; Echigo, S. ; Kohama, M. ; Suzuki, A. T. ; Haines, T. J. ; Blaufuss, E. ; Kim, B. K. ; Sanford, R. ; Svoboda, R. ; Chen, M. L. ; Conner, Z. ; Goodman, J. A. ; Sullivan, G. W. ; Hill, J. ; Jung, C. K. ; Martens, K. ; Mauger, C. ; McGrew, 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, S. B. ; Etoh, M. ; Fujita, K. ; Hasegawa, A. ; Hasegawa, T. ; Hatakeyama, S. ; Iwamoto, T. ; Koga, M. ; Maruyama, T. ; Ogawa, H. ; Shirai, J. ; Suzuki, A. ; Tsushima, F. ; Koshiba, M. ; Nemoto, M. ; Nishijima, K. ; Futagami, T. ; Hayato, Y. ; Kanaya, Y. ; Kaneyuki, K. ; Watanabe, Y. ; Kielczewska, D. ; Doyle, R. A. ; George, J. S. ; Stachyra, A. L. ; Wai, L. L. ; Wilkes, R. J. ; Young, K. K. / Evidence for oscillation of atmospheric neutrinos. In: Physical Review Letters. 1998 ; Vol. 81, No. 8. pp. 1562-1567.
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T1 - Evidence for oscillation of atmospheric neutrinos

AU - Fukuda, Y.

AU - Hayakawa, T.

AU - Ichihara, E.

AU - Inoue, K.

AU - Ishihara, K.

AU - Ishino, Hirokazu

AU - Itow, Y.

AU - Kajita, T.

AU - Kameda, J.

AU - Kasuga, S.

AU - Kobayashi, K.

AU - Kobayashi, Y.

AU - Koshio, Yusuke

AU - Miura, M.

AU - Nakahata, M.

AU - Nakayama, S.

AU - Okada, A.

AU - Okumura, K.

AU - Sakurai, N.

AU - Shiozawa, M.

AU - Suzuki, Y.

AU - Takeuchi, Y.

AU - Totsuka, Y.

AU - Yamada, S.

AU - Earl, M.

AU - Habig, A.

AU - Kearns, E.

AU - Messier, M. D.

AU - Scholberg, K.

AU - Stone, J. L.

AU - Sulak, L. R.

AU - Walter, C. W.

AU - Goldhaber, M.

AU - Barszczxak, T.

AU - Casper, D.

AU - Gajewski, W.

AU - Halverson, P. G.

AU - Hsu, J.

AU - Kropp, W. R.

AU - Price, L. R.

AU - Reines, F.

AU - Smy, M.

AU - Sobel, H. W.

AU - Vagins, M. R.

AU - Ganezer, K. S.

AU - Keig, W. E.

AU - Ellsworth, R. W.

AU - Tasaka, S.

AU - Flanagan, J. W.

AU - Kibayashi, A.

AU - Learned, J. G.

AU - Matsuno, S.

AU - Stenger, V. J.

AU - Takemori, D.

AU - Ishii, T.

AU - Kanzaki, J.

AU - Kobayashi, T.

AU - Mine, S.

AU - Nakamura, K.

AU - Nishikawa, K.

AU - Oyama, Y.

AU - Sakai, A.

AU - Sakuda, Makoto

AU - Sasaki, O.

AU - Echigo, S.

AU - Kohama, M.

AU - Suzuki, A. T.

AU - Haines, T. J.

AU - Blaufuss, E.

AU - Kim, B. K.

AU - Sanford, R.

AU - Svoboda, R.

AU - Chen, M. L.

AU - Conner, Z.

AU - Goodman, J. A.

AU - Sullivan, G. W.

AU - Hill, J.

AU - Jung, C. K.

AU - Martens, K.

AU - Mauger, C.

AU - McGrew, C.

AU - Sharkey, E.

AU - Viren, B.

AU - Yanagisawa, C.

AU - Doki, W.

AU - Miyano, K.

AU - Okazawa, H.

AU - Saji, C.

AU - Takahata, M.

AU - Nagashima, Y.

AU - Takita, M.

AU - Yamaguchi, T.

AU - Yoshida, M.

AU - Kim, S. B.

AU - Etoh, M.

AU - Fujita, K.

AU - Hasegawa, A.

AU - Hasegawa, T.

AU - Hatakeyama, S.

AU - Iwamoto, T.

AU - Koga, M.

AU - Maruyama, T.

AU - Ogawa, H.

AU - Shirai, J.

AU - Suzuki, A.

AU - Tsushima, F.

AU - Koshiba, M.

AU - Nemoto, M.

AU - Nishijima, K.

AU - Futagami, T.

AU - Hayato, Y.

AU - Kanaya, Y.

AU - Kaneyuki, K.

AU - Watanabe, Y.

AU - Kielczewska, D.

AU - Doyle, R. A.

AU - George, J. S.

AU - Stachyra, A. L.

AU - Wai, L. L.

AU - Wilkes, R. J.

AU - Young, K. K.

PY - 1998/8/24

Y1 - 1998/8/24

N2 - 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 sin2 2θ > 0.82 and 5 × 10-4 <Δm2 <6 × 10-3 eV2 at 90% confidence level.

AB - 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 sin2 2θ > 0.82 and 5 × 10-4 <Δm2 <6 × 10-3 eV2 at 90% confidence level.

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EP - 1567

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JF - Physical Review Letters

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