Measurement of atmospheric neutrino flux consistent with tau neutrino appearance

被引：102

作者：

Abe, K. ^{[1
]}

Hayato, Y.

Iida, T.

Ishihara, K.

Kameda, J.

Koshio, Y.

Minamino, A.

Mitsuda, C.

Miura, M.

Moriyama, S.

Nakahata, M.

Obayashi, Y.

Ogawa, H.

Shiozawa, M.

Suzuki, Y.

Takeda, A.

Takeuchi, Y.

Ueshima, K.

Higuchi, I.

Ishihara, C.

Ishitsuka, M.

Kajita, T.

Kaneyuki, K.

Mitsuka, G.

Nakayama, S.

Nishino, H.

Okumura, K.

Saji, C.

Takenaga, Y.

Totsuka, Y.

Clark, S.

Desai, S.

Dufour, F.

Kearns, E.

Likhoded, S.

Litos, M.

Raaf, J. L.

Stone, J. L.

Sulak, L. R.

Wang, W.

Goldhaber, M.

Casper, D.

Cravens, J. P.

Kropp, W. R.

Liu, D. W.

Mine, S.

Regis, C.

Smy, M. B.

Sobel, H. W.

Vagins, M. R.

机构：

[1] Univ Tokyo, Inst Cosm Ray Res, Kamioka Observ, Gifu 5061205, Japan

[2] Univ Tokyo, Inst Cosm Ray Res, Res Ctr Cosm Neutrinos, Chiba 2778582, Japan

[3] Boston Univ, Dept Phys, Boston, MA 02215 USA

[4] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[5] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[6] Calif State Univ Dominguez Hills, Dept Phys, Carson, CA 90747 USA

[7] Chonnam Natl Univ, Dept Phys, Kwangju 500757, South Korea

[8] Duke Univ, Dept Phys, Durham, NC 27708 USA

[9] George Mason Univ, Dept Phys, Fairfax, VA 22030 USA

[10] Gifu Univ, Dept Phys, Gifu 5011193, Japan

[11] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA

[12] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[13] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

[14] Kobe Univ, Dept Phys, Kobe, Hyogo 6578501, Japan

[15] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[16] Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87544 USA

[17] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[18] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[19] Univ Minnesota, Dept Phys, Duluth, MN 55812 USA

[20] Miyagi Univ Educ, Dept Phys, Sendai, Miyagi 9800845, Japan

[21] Nagoya Univ, Solar Terrestrial Environm Lab, Nagoya, Aichi 4648601, Japan

[22] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[23] Niigata Univ, Dept Phys, Niigata 9502181, Japan

[24] Okayama Univ, Dept Phys, Okayama 7008530, Japan

[25] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan

[26] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea

[27] Shizuoka Univ, Dept Syst Engn, Shizuoka 4328561, Japan

[28] Shizuoka Univ Welf, Dept Informat Social Welf, Shizuoka 4258611, Japan

[29] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea

[30] Tohoku Univ, Res Ctr Neutrino Sci, Sendai, Miyagi 9808578, Japan

[31] Tokai Univ, Dept Phys, Kanagawa 2591292, Japan

[32] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan

[33] Univ Tokyo, Tokyo 1130033, Japan

[34] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland

[35] Univ Washington, Dept Phys, Seattle, WA 98195 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 17期

基金：

新加坡国家研究基金会;

关键词：

D O I：

10.1103/PhysRevLett.97.171801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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)+15/-32(syst) events is obtained with an expectation of 78 +/- 26(syst). The hypothesis of no tau neutrino appearance is disfavored by 2.4 sigma.

引用

页数：6

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