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Measurement of atmospheric neutrino flux consistent with tau neutrino appearance

  • K. Abe
  • , Y. Hayato
  • , T. Iida
  • , K. Ishihara
  • , J. Kameda
  • , Y. Koshio
  • , A. Minamino
  • , C. Mitsuda
  • , M. Miura
  • , S. Moriyama
  • , M. Nakahata
  • , Y. Obayashi
  • , H. Ogawa
  • , M. Shiozawa
  • , Y. Suzuki
  • , A. Takeda
  • , Y. Takeuchi
  • , K. Ueshima
  • , I. Higuchi
  • , C. Ishihara
  • M. Ishitsuka, T. Kajita, K. Kaneyuki, G. Mitsuka, S. Nakayama, H. Nishino, K. Okumura, C. Saji, Y. Takenaga, Y. Totsuka, S. Clark, S. Desai, F. Dufour, E. Kearns, S. Likhoded, M. Litos, J. L. Raaf, J. L. Stone, L. R. Sulak, W. Wang, M. Goldhaber, D. Casper, J. P. Cravens, W. R. Kropp, D. W. Liu, S. Mine, C. Regis, M. B. Smy, H. W. Sobel, M. R. Vagins, K. S. Ganezer, J. E. Hill, W. E. Keig, J. S. Jang, J. Y. Kim, I. T. Lim, K. Scholberg, N. Tanimoto, C. W. Walter, R. Wendell, R. W. Ellsworth, S. Tasaka, E. Guillian, J. G. Learned, S. Matsuno, M. D. Messier, A. K. Ichikawa, T. Ishida, T. Ishii, T. Iwashita, T. Kobayashi, T. Nakadaira, K. Nakamura, K. Nitta, Y. Oyama, A. T. Suzuki, M. Hasegawa, I. Kato, H. Maesaka, T. Nakaya, K. Nishikawa, T. Sasaki, H. Sato, S. Yamamoto, M. Yokoyama, T. J. Haines, S. Dazeley, S. Hatakeyama, R. Svoboda, G. W. Sullivan, A. Habig, R. Gran, Y. Fukuda, T. Sato, Y. Itow, T. Koike, C. K. Jung, T. Kato, K. Kobayashi, M. Malek, C. McGrew, A. Sarrat, R. Terri, C. Yanagisawa, N. Tamura, M. Sakuda, M. Sugihara, Y. Kuno, M. Yoshida, S. B. Kim, J. Yoo, T. Ishizuka, H. Okazawa, Y. Choi, H. K. Seo, Y. Gando, T. Hasegawa, K. Inoue, H. Ishii, K. Nishijima, H. Ishino, Y. Watanabe, M. Koshiba, D. Kielczewska, J. Zalipska, H. G. Berns, K. K. Shiraishi, K. Washburn, R. J. Wilkes
  • The University of Tokyo
  • Boston University
  • Brookhaven National Laboratory
  • University of California at Irvine
  • California State University Dominguez Hills
  • Chonnam National University
  • Duke University
  • George Mason University
  • Gifu University
  • University of Hawai'i at Mānoa
  • Indiana University Bloomington
  • High Energy Accelerator Research Organization, Tsukuba
  • Kobe University
  • Kyoto University
  • Los Alamos National Laboratory
  • Louisiana State University
  • University of Maryland, College Park
  • University of Minnesota Duluth
  • Miyagi University of Education
  • Nagoya University
  • Stony Brook University
  • Niigata University
  • Okayama University
  • The University of Osaka
  • Seoul National University
  • Shizuoka University
  • Shizuoka University of Welfare
  • Sungkyunkwan University
  • Tohoku University
  • Tokai University
  • Institute of Science Tokyo
  • University of Warsaw
  • University of Washington

Research output: Contribution to journalArticlepeer-review

134 Scopus citations

Abstract

A search for the appearance of tau neutrinos from νμ↔ντ oscillations in the atmospheric neutrinos has been performed using 1489.2 days of atmospheric neutrino data from the Super-Kamiokande-I experiment. A best fit tau neutrino appearance signal of 138±48(stat)-32+15(syst) events is obtained with an expectation of 78±26(syst). The hypothesis of no tau neutrino appearance is disfavored by 2.4 sigma.

Original languageEnglish
Article number171801
JournalPhysical Review Letters
Volume97
Issue number17
DOIs
StatePublished - 2006

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