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
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).
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页数:5
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