Evidence for muon neutrino oscillation in an accelerator-based experiment

被引：363

作者：

Aliu, E ^{[1
]}

Andringa, S

Aoki, S

Argyriades, J

Asakura, K

Ashie, R

Berns, H

Bhang, H

Blondel, A

Borghi, S

Bouchez, J

Burguet-Castell, J

Casper, D

Cavata, C

Cervera, A

Cho, KO

Choi, JH

Dore, U

Espinal, X

Fechner, M

Fernandez, E

Fukuda, Y

Gomez-Cadenas, J

Gran, R

Hara, T

Hasegawa, M

Hasegawa, T

Hayashi, K

Hayato, Y

Helmer, RL

Hill, J

Hiraide, K

Hosaka, J

Ichikawa, AK

Iinuma, M

Ikeda, A

Inagaki, T

Ishida, T

Ishihara, K

Ishii, T

Ishitsuka, M

Itow, Y

Iwashita, T

Jang, HI

Jeon, EJ

Jeong, IS

Joo, K

Jover, G

Jung, CK

Kajita, T

机构：

[1] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08139 Bellaterra, Barcelona, Spain

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

[3] CEA Saclay, DAPNIA, F-91191 Gif Sur Yvette, France

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

[5] Dongshin Univ, Dept Phys, Naju 520714, South Korea

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

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

[8] Hiroshima Univ, Grad Sch Adv Sci Matter, Hiroshima 7398530, Japan

[9] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

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

[11] Korea Univ, Dept Phys, Seoul 136701, South Korea

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

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

[14] MIT, Dept Phys, Cambridge, MA 02139 USA

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

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

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

[18] Osaka Univ, Dept Phys, Osaka 5600043, Japan

[19] Univ Roma La Sapienza, I-000185 Rome, Italy

[20] Ist Nazl Fis Nucl, I-000185 Rome, Italy

[21] Seoul Natl Univ, Dept Phys, Seoul 151747, South Korea

[22] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

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

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

[25] Sci Univ Tokyo, Dept Phys, Noda, Chiba 2780022, Japan

[26] TRIUMF, Vancouver, BC V6T 2A3, Canada

[27] Univ Geneva, Sect Phys, DPNC, CH-1211 Geneva 4, Switzerland

[28] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

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

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

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

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

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.94.081802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present results for nu(mu) oscillation in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment. K2K uses an accelerator-produced nu(mu) beam with a mean energy of 1.3 GeV directed at the Super-Kamiokande detector. We observed the energy-dependent disappearance of nu(mu), which we presume have oscillated to nu(tau). The probability that we would observe these results if there is no neutrino oscillation is 0.0050% (4.0sigma).

引用

页数：5

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