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; Super-Kamiokande Collaboration

doi:10.1103/PhysRevLett.97.171801

Measurement of atmospheric neutrino flux consistent with tau neutrino appearance

Phys Rev Lett. 2006 Oct 27;97(17):171801. doi: 10.1103/PhysRevLett.97.171801. Epub 2006 Oct 23.

Authors

K Abe¹, 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; Super-Kamiokande Collaboration

Affiliation

¹ Kamioka Observatory, Institute for Cosmic Ray Research, University of Tokyo, Kamioka, Gifu 506-1205, Japan.

PMID: 17155460
DOI: 10.1103/PhysRevLett.97.171801

Abstract

A search for the appearance of tau neutrinos from nu(mu) <--> nu(tau) 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.