Evidence for oscillation of atmospheric neutrinos

被引：4392

作者：

Fukuda, Y ^{[1
]}

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

机构：

[1] Univ Tokyo, Inst Cosm Ray Res, Tanashi, Tokyo 1888502, Japan

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

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

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

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

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

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

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

[9] High Energy Accelerator Res Org, KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 3050801, Japan

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

[11] Univ Calif Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87544 USA

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

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

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

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

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

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

[18] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[19] Univ Tokyo, Tokyo 1130033, Japan

[20] Tokai Univ, Dept Phys, Hiratsuka, Kanagawa 2591292, Japan

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

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

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

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.81.1562

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 nu(mu),<----> nu(tau) oscillations With sin(2) 2 theta > 0.82 and 5 x 10(-4) < Delta m(2) < 6 x 10(-3) eV(2) at 90% confidence level.

引用

页码：1562 / 1567

页数：6

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