Measurement of neutrino oscillation by the K2K experiment

M. H. Ahn, E. Aliu, S. Andringa, S. Aoki, Y. Aoyama, J. Argyriades, K. Asakura, R. Ashie, F. Berghaus, H. G. Berns, H. Bhang, A. Blondel, S. Borghi, J. Bouchez, S. C. Boyd, J. Burguet-Castell, D. Casper, J. Catala, C. Cavata, A. CerveraS. M. Chen, K. O. Cho, J. H. Choi, U. Dore, S. Echigo, X. Espinal, M. Fechner, E. Fernandez, K. Fujii, Y. Fujii, S. Fukuda, Y. Fukuda, J. Gomez-Cadenas, R. Gran, T. Hara, M. Hasegawa, T. Hasegawa, K. Hayashi, Y. Hayato, R. L. Helmer, I. Higuchi, J. Hill, K. Hiraide, E. Hirose, J. Hosaka, A. K. Ichikawa, M. Ieiri, M. Iinuma, A. Ikeda, T. Inagaki, T. Ishida, K. Ishihara, H. Ishii, T. Ishii, Hirokazu Ishino, M. Ishitsuka, Y. Itow, T. Iwashita, H. I. Jang, J. S. Jang, E. J. Jeon, I. S. Jeong, K. K. Joo, G. Jover, C. K. Jung, T. Kajita, J. Kameda, K. Kaneyuki, B. H. Kang, I. Kato, Y. Kato, E. Kearns, D. Kerr, C. O. Kim, M. Khabibullin, A. Khotjantsev, D. Kielczewska, B. J. Kim, H. I. Kim, J. H. Kim, J. Y. Kim, S. B. Kim, M. Kitamura, P. Kitching, K. Kobayashi, T. Kobayashi, M. Kohama, A. Konaka, Yusuke Koshio, W. Kropp, J. Kubota, Yu Kudenko, G. Kume, Y. Kuno, Y. Kurimoto, T. Kutter, J. Learned, S. Likhoded, I. T. Lim, S. H. Lim, P. F. Loverre, L. Ludovici, H. Maesaka, J. Mallet, C. Mariani, K. Martens, T. Maruyama, S. Matsuno, V. Matveev, C. Mauger, K. B. McConnel Mahn, C. McGrew, S. Mikheyev, M. Minakawa, A. Minamino, S. Mine, O. Mineev, C. Mitsuda, G. Mitsuka, M. Miura, Y. Moriguchi, T. Morita, S. Moriyama, T. Nakadaira, M. Nakahata, K. Nakamura, I. Nakano, F. Nakata, T. Nakaya, S. Nakayama, T. Namba, R. Nambu, S. Nawang, K. Nishikawa, H. Nishino, S. Nishiyama, K. Nitta, S. Noda, H. Noumi, F. Nova, P. Novella, Y. Obayashi, A. Okada, K. Okumura, M. Okumura, M. Onchi, Ooyabu T, S. M. Oser, T. Otaki, Y. Oyama, M. Y. Pac, H. Park, F. Pierre, A. Rodriguez, C. Saji, A. Sakai, Makoto Sakuda, N. Sakurai, F. Sanchez, A. Sarrat, T. Sasaki, H. Sato, K. Sato, K. Scholberg, R. Schroeter, M. Sekiguchi, E. Seo, E. Sharkey, A. Shima, M. Shiozawa, K. Shiraishi, G. Sitjes, M. Smy, H. So, H. Sobel, M. Sorel, J. Stone, L. Sulak, Y. Suga, A. Suzuki, Y. Suzuki, Y. Suzuki, M. Tada, T. Takahashi, M. Takasaki, M. Takatsuki, Y. Takenaga, K. Takenaka, H. Takeuchi, Y. Takeuchi, K. Taki, Y. Takubo, N. Tamura, H. Tanaka, K. Tanaka, M. Tanaka, Y. Tanaka, K. Tashiro, R. Terri, S. T'Jampens, A. Tornero-Lopez, T. Toshito, Y. Totsuka, S. Ueda, M. Vagins, L. Whitehead, C. W. Walter, W. Wang, R. J. Wilkes, S. Yamada, Y. Yamada, S. Yamamoto, Y. Yamanoi, C. Yanagisawa, N. Yershov, H. Yokoyama, M. Yokoyama, J. Yoo, M. Yoshida, J. Zalipska

Research output: Contribution to journalArticle

612 Citations (Scopus)

Abstract

We present measurements of νμ disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment. One-hundred and twelve beam-originated neutrino events are observed in the fiducial volume of Super-Kamiokande with an expectation of 158.1-8.6+9.2 events without oscillation. A distortion of the energy spectrum is also seen in 58 single-ring muonlike events with reconstructed energies. The probability that the observations are explained by the expectation for no neutrino oscillation is 0.0015% (4.3σ). In a two-flavor oscillation scenario, the allowed Δm2 region at sin 22θ=1 is between 1.9 and 3.5×10-3eV2 at the 90% C.L. with a best-fit value of 2.8×10-3eV2.

Original languageEnglish
Article number072003
JournalPhysical Review D
Volume74
Issue number7
DOIs
Publication statusPublished - 2006

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Neutrino Oscillations
neutrinos
oscillations
Coversine
Oscillation
Experiment
Energy Spectrum
Neutrinos
neutrino beams
Baseline
Ring
Scenarios
energy spectra
Energy
rings
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

Ahn, M. H., Aliu, E., Andringa, S., Aoki, S., Aoyama, Y., Argyriades, J., ... Zalipska, J. (2006). Measurement of neutrino oscillation by the K2K experiment. Physical Review D, 74(7), [072003]. https://doi.org/10.1103/PhysRevD.74.072003

Measurement of neutrino oscillation by the K2K experiment. / Ahn, M. H.; Aliu, E.; Andringa, S.; Aoki, S.; Aoyama, Y.; Argyriades, J.; Asakura, K.; Ashie, R.; Berghaus, F.; Berns, H. G.; Bhang, H.; Blondel, A.; Borghi, S.; Bouchez, J.; Boyd, S. C.; Burguet-Castell, J.; Casper, D.; Catala, J.; Cavata, C.; Cervera, A.; Chen, S. M.; Cho, K. O.; Choi, J. H.; Dore, U.; Echigo, S.; Espinal, X.; Fechner, M.; Fernandez, E.; Fujii, K.; Fujii, Y.; Fukuda, S.; Fukuda, Y.; Gomez-Cadenas, J.; Gran, R.; Hara, T.; Hasegawa, M.; Hasegawa, T.; Hayashi, K.; Hayato, Y.; Helmer, R. L.; Higuchi, I.; Hill, J.; Hiraide, K.; Hirose, E.; Hosaka, J.; Ichikawa, A. K.; Ieiri, M.; Iinuma, M.; Ikeda, A.; Inagaki, T.; Ishida, T.; Ishihara, K.; Ishii, H.; Ishii, T.; Ishino, Hirokazu; Ishitsuka, M.; Itow, Y.; Iwashita, T.; Jang, H. I.; Jang, J. S.; Jeon, E. J.; Jeong, I. S.; Joo, K. K.; Jover, G.; Jung, C. K.; Kajita, T.; Kameda, J.; Kaneyuki, K.; Kang, B. H.; Kato, I.; Kato, Y.; Kearns, E.; Kerr, D.; Kim, C. O.; Khabibullin, M.; Khotjantsev, A.; Kielczewska, D.; Kim, B. J.; Kim, H. I.; Kim, J. H.; Kim, J. Y.; Kim, S. B.; Kitamura, M.; Kitching, P.; Kobayashi, K.; Kobayashi, T.; Kohama, M.; Konaka, A.; Koshio, Yusuke; Kropp, W.; Kubota, J.; Kudenko, Yu; Kume, G.; Kuno, Y.; Kurimoto, Y.; Kutter, T.; Learned, J.; Likhoded, S.; Lim, I. T.; Lim, S. H.; Loverre, P. F.; Ludovici, L.; Maesaka, H.; Mallet, J.; Mariani, C.; Martens, K.; Maruyama, T.; Matsuno, S.; Matveev, V.; Mauger, C.; McConnel Mahn, K. B.; McGrew, C.; Mikheyev, S.; Minakawa, M.; Minamino, A.; Mine, S.; Mineev, O.; Mitsuda, C.; Mitsuka, G.; Miura, M.; Moriguchi, Y.; Morita, T.; Moriyama, S.; Nakadaira, T.; Nakahata, M.; Nakamura, K.; Nakano, I.; Nakata, F.; Nakaya, T.; Nakayama, S.; Namba, T.; Nambu, R.; Nawang, S.; Nishikawa, K.; Nishino, H.; Nishiyama, S.; Nitta, K.; Noda, S.; Noumi, H.; Nova, F.; Novella, P.; Obayashi, Y.; Okada, A.; Okumura, K.; Okumura, M.; Onchi, M.; T, Ooyabu; Oser, S. M.; Otaki, T.; Oyama, Y.; Pac, M. Y.; Park, H.; Pierre, F.; Rodriguez, A.; Saji, C.; Sakai, A.; Sakuda, Makoto; Sakurai, N.; Sanchez, F.; Sarrat, A.; Sasaki, T.; Sato, H.; Sato, K.; Scholberg, K.; Schroeter, R.; Sekiguchi, M.; Seo, E.; Sharkey, E.; Shima, A.; Shiozawa, M.; Shiraishi, K.; Sitjes, G.; Smy, M.; So, H.; Sobel, H.; Sorel, M.; Stone, J.; Sulak, L.; Suga, Y.; Suzuki, A.; Suzuki, Y.; Suzuki, Y.; Tada, M.; Takahashi, T.; Takasaki, M.; Takatsuki, M.; Takenaga, Y.; Takenaka, K.; Takeuchi, H.; Takeuchi, Y.; Taki, K.; Takubo, Y.; Tamura, N.; Tanaka, H.; Tanaka, K.; Tanaka, M.; Tanaka, Y.; Tashiro, K.; Terri, R.; T'Jampens, S.; Tornero-Lopez, A.; Toshito, T.; Totsuka, Y.; Ueda, S.; Vagins, M.; Whitehead, L.; Walter, C. W.; Wang, W.; Wilkes, R. J.; Yamada, S.; Yamada, Y.; Yamamoto, S.; Yamanoi, Y.; Yanagisawa, C.; Yershov, N.; Yokoyama, H.; Yokoyama, M.; Yoo, J.; Yoshida, M.; Zalipska, J.

In: Physical Review D, Vol. 74, No. 7, 072003, 2006.

Research output: Contribution to journalArticle

Ahn, MH, Aliu, E, Andringa, S, Aoki, S, Aoyama, Y, Argyriades, J, Asakura, K, Ashie, R, Berghaus, F, Berns, HG, Bhang, H, Blondel, A, Borghi, S, Bouchez, J, Boyd, SC, Burguet-Castell, J, Casper, D, Catala, J, Cavata, C, Cervera, A, Chen, SM, Cho, KO, Choi, JH, Dore, U, Echigo, S, Espinal, X, Fechner, M, Fernandez, E, Fujii, K, Fujii, Y, Fukuda, S, Fukuda, Y, Gomez-Cadenas, J, Gran, R, Hara, T, Hasegawa, M, Hasegawa, T, Hayashi, K, Hayato, Y, Helmer, RL, Higuchi, I, Hill, J, Hiraide, K, Hirose, E, Hosaka, J, Ichikawa, AK, Ieiri, M, Iinuma, M, Ikeda, A, Inagaki, T, Ishida, T, Ishihara, K, Ishii, H, Ishii, T, Ishino, H, Ishitsuka, M, Itow, Y, Iwashita, T, Jang, HI, Jang, JS, Jeon, EJ, Jeong, IS, Joo, KK, Jover, G, Jung, CK, Kajita, T, Kameda, J, Kaneyuki, K, Kang, BH, Kato, I, Kato, Y, Kearns, E, Kerr, D, Kim, CO, Khabibullin, M, Khotjantsev, A, Kielczewska, D, Kim, BJ, Kim, HI, Kim, JH, Kim, JY, Kim, SB, Kitamura, M, Kitching, P, Kobayashi, K, Kobayashi, T, Kohama, M, Konaka, A, Koshio, Y, Kropp, W, Kubota, J, Kudenko, Y, Kume, G, Kuno, Y, Kurimoto, Y, Kutter, T, Learned, J, Likhoded, S, Lim, IT, Lim, SH, Loverre, PF, Ludovici, L, Maesaka, H, Mallet, J, Mariani, C, Martens, K, Maruyama, T, Matsuno, S, Matveev, V, Mauger, C, McConnel Mahn, KB, McGrew, C, Mikheyev, S, Minakawa, M, Minamino, A, Mine, S, Mineev, O, Mitsuda, C, Mitsuka, G, Miura, M, Moriguchi, Y, Morita, T, Moriyama, S, Nakadaira, T, Nakahata, M, Nakamura, K, Nakano, I, Nakata, F, Nakaya, T, Nakayama, S, Namba, T, Nambu, R, Nawang, S, Nishikawa, K, Nishino, H, Nishiyama, S, Nitta, K, Noda, S, Noumi, H, Nova, F, Novella, P, Obayashi, Y, Okada, A, Okumura, K, Okumura, M, Onchi, M, T, O, Oser, SM, Otaki, T, Oyama, Y, Pac, MY, Park, H, Pierre, F, Rodriguez, A, Saji, C, Sakai, A, Sakuda, M, Sakurai, N, Sanchez, F, Sarrat, A, Sasaki, T, Sato, H, Sato, K, Scholberg, K, Schroeter, R, Sekiguchi, M, Seo, E, Sharkey, E, Shima, A, Shiozawa, M, Shiraishi, K, Sitjes, G, Smy, M, So, H, Sobel, H, Sorel, M, Stone, J, Sulak, L, Suga, Y, Suzuki, A, Suzuki, Y, Suzuki, Y, Tada, M, Takahashi, T, Takasaki, M, Takatsuki, M, Takenaga, Y, Takenaka, K, Takeuchi, H, Takeuchi, Y, Taki, K, Takubo, Y, Tamura, N, Tanaka, H, Tanaka, K, Tanaka, M, Tanaka, Y, Tashiro, K, Terri, R, T'Jampens, S, Tornero-Lopez, A, Toshito, T, Totsuka, Y, Ueda, S, Vagins, M, Whitehead, L, Walter, CW, Wang, W, Wilkes, RJ, Yamada, S, Yamada, Y, Yamamoto, S, Yamanoi, Y, Yanagisawa, C, Yershov, N, Yokoyama, H, Yokoyama, M, Yoo, J, Yoshida, M & Zalipska, J 2006, 'Measurement of neutrino oscillation by the K2K experiment', Physical Review D, vol. 74, no. 7, 072003. https://doi.org/10.1103/PhysRevD.74.072003
Ahn MH, Aliu E, Andringa S, Aoki S, Aoyama Y, Argyriades J et al. Measurement of neutrino oscillation by the K2K experiment. Physical Review D. 2006;74(7). 072003. https://doi.org/10.1103/PhysRevD.74.072003
Ahn, M. H. ; Aliu, E. ; Andringa, S. ; Aoki, S. ; Aoyama, Y. ; Argyriades, J. ; Asakura, K. ; Ashie, R. ; Berghaus, F. ; Berns, H. G. ; Bhang, H. ; Blondel, A. ; Borghi, S. ; Bouchez, J. ; Boyd, S. C. ; Burguet-Castell, J. ; Casper, D. ; Catala, J. ; Cavata, C. ; Cervera, A. ; Chen, S. M. ; Cho, K. O. ; Choi, J. H. ; Dore, U. ; Echigo, S. ; Espinal, X. ; Fechner, M. ; Fernandez, E. ; Fujii, K. ; Fujii, Y. ; Fukuda, S. ; Fukuda, Y. ; Gomez-Cadenas, J. ; Gran, R. ; Hara, T. ; Hasegawa, M. ; Hasegawa, T. ; Hayashi, K. ; Hayato, Y. ; Helmer, R. L. ; Higuchi, I. ; Hill, J. ; Hiraide, K. ; Hirose, E. ; Hosaka, J. ; Ichikawa, A. K. ; Ieiri, M. ; Iinuma, M. ; Ikeda, A. ; Inagaki, T. ; Ishida, T. ; Ishihara, K. ; Ishii, H. ; Ishii, T. ; Ishino, Hirokazu ; Ishitsuka, M. ; Itow, Y. ; Iwashita, T. ; Jang, H. I. ; Jang, J. S. ; Jeon, E. J. ; Jeong, I. S. ; Joo, K. K. ; Jover, G. ; Jung, C. K. ; Kajita, T. ; Kameda, J. ; Kaneyuki, K. ; Kang, B. H. ; Kato, I. ; Kato, Y. ; Kearns, E. ; Kerr, D. ; Kim, C. O. ; Khabibullin, M. ; Khotjantsev, A. ; Kielczewska, D. ; Kim, B. J. ; Kim, H. I. ; Kim, J. H. ; Kim, J. Y. ; Kim, S. B. ; Kitamura, M. ; Kitching, P. ; Kobayashi, K. ; Kobayashi, T. ; Kohama, M. ; Konaka, A. ; Koshio, Yusuke ; Kropp, W. ; Kubota, J. ; Kudenko, Yu ; Kume, G. ; Kuno, Y. ; Kurimoto, Y. ; Kutter, T. ; Learned, J. ; Likhoded, S. ; Lim, I. T. ; Lim, S. H. ; Loverre, P. F. ; Ludovici, L. ; Maesaka, H. ; Mallet, J. ; Mariani, C. ; Martens, K. ; Maruyama, T. ; Matsuno, S. ; Matveev, V. ; Mauger, C. ; McConnel Mahn, K. B. ; McGrew, C. ; Mikheyev, S. ; Minakawa, M. ; Minamino, A. ; Mine, S. ; Mineev, O. ; Mitsuda, C. ; Mitsuka, G. ; Miura, M. ; Moriguchi, Y. ; Morita, T. ; Moriyama, S. ; Nakadaira, T. ; Nakahata, M. ; Nakamura, K. ; Nakano, I. ; Nakata, F. ; Nakaya, T. ; Nakayama, S. ; Namba, T. ; Nambu, R. ; Nawang, S. ; Nishikawa, K. ; Nishino, H. ; Nishiyama, S. ; Nitta, K. ; Noda, S. ; Noumi, H. ; Nova, F. ; Novella, P. ; Obayashi, Y. ; Okada, A. ; Okumura, K. ; Okumura, M. ; Onchi, M. ; T, Ooyabu ; Oser, S. M. ; Otaki, T. ; Oyama, Y. ; Pac, M. Y. ; Park, H. ; Pierre, F. ; Rodriguez, A. ; Saji, C. ; Sakai, A. ; Sakuda, Makoto ; Sakurai, N. ; Sanchez, F. ; Sarrat, A. ; Sasaki, T. ; Sato, H. ; Sato, K. ; Scholberg, K. ; Schroeter, R. ; Sekiguchi, M. ; Seo, E. ; Sharkey, E. ; Shima, A. ; Shiozawa, M. ; Shiraishi, K. ; Sitjes, G. ; Smy, M. ; So, H. ; Sobel, H. ; Sorel, M. ; Stone, J. ; Sulak, L. ; Suga, Y. ; Suzuki, A. ; Suzuki, Y. ; Suzuki, Y. ; Tada, M. ; Takahashi, T. ; Takasaki, M. ; Takatsuki, M. ; Takenaga, Y. ; Takenaka, K. ; Takeuchi, H. ; Takeuchi, Y. ; Taki, K. ; Takubo, Y. ; Tamura, N. ; Tanaka, H. ; Tanaka, K. ; Tanaka, M. ; Tanaka, Y. ; Tashiro, K. ; Terri, R. ; T'Jampens, S. ; Tornero-Lopez, A. ; Toshito, T. ; Totsuka, Y. ; Ueda, S. ; Vagins, M. ; Whitehead, L. ; Walter, C. W. ; Wang, W. ; Wilkes, R. J. ; Yamada, S. ; Yamada, Y. ; Yamamoto, S. ; Yamanoi, Y. ; Yanagisawa, C. ; Yershov, N. ; Yokoyama, H. ; Yokoyama, M. ; Yoo, J. ; Yoshida, M. ; Zalipska, J. / Measurement of neutrino oscillation by the K2K experiment. In: Physical Review D. 2006 ; Vol. 74, No. 7.
@article{13b8edbd4e0947aba8bad564b3c494a0,
title = "Measurement of neutrino oscillation by the K2K experiment",
abstract = "We present measurements of νμ disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment. One-hundred and twelve beam-originated neutrino events are observed in the fiducial volume of Super-Kamiokande with an expectation of 158.1-8.6+9.2 events without oscillation. A distortion of the energy spectrum is also seen in 58 single-ring muonlike events with reconstructed energies. The probability that the observations are explained by the expectation for no neutrino oscillation is 0.0015{\%} (4.3σ). In a two-flavor oscillation scenario, the allowed Δm2 region at sin 22θ=1 is between 1.9 and 3.5×10-3eV2 at the 90{\%} C.L. with a best-fit value of 2.8×10-3eV2.",
author = "Ahn, {M. H.} and E. Aliu and S. Andringa and S. Aoki and Y. Aoyama and J. Argyriades and K. Asakura and R. Ashie and F. Berghaus and Berns, {H. G.} and H. Bhang and A. Blondel and S. Borghi and J. Bouchez and Boyd, {S. C.} and J. Burguet-Castell and D. Casper and J. Catala and C. Cavata and A. Cervera and Chen, {S. M.} and Cho, {K. O.} and Choi, {J. H.} and U. Dore and S. Echigo and X. Espinal and M. Fechner and E. Fernandez and K. Fujii and Y. Fujii and S. Fukuda and Y. Fukuda and J. Gomez-Cadenas and R. Gran and T. Hara and M. Hasegawa and T. Hasegawa and K. Hayashi and Y. Hayato and Helmer, {R. L.} and I. Higuchi and J. Hill and K. Hiraide and E. Hirose and J. Hosaka and Ichikawa, {A. K.} and M. Ieiri and M. Iinuma and A. Ikeda and T. Inagaki and T. Ishida and K. Ishihara and H. Ishii and T. Ishii and Hirokazu Ishino and M. Ishitsuka and Y. Itow and T. Iwashita and Jang, {H. I.} and Jang, {J. S.} and Jeon, {E. J.} and Jeong, {I. S.} and Joo, {K. K.} and G. Jover and Jung, {C. K.} and T. Kajita and J. Kameda and K. Kaneyuki and Kang, {B. H.} and I. Kato and Y. Kato and E. Kearns and D. Kerr and Kim, {C. O.} and M. Khabibullin and A. Khotjantsev and D. Kielczewska and Kim, {B. J.} and Kim, {H. I.} and Kim, {J. H.} and Kim, {J. Y.} and Kim, {S. B.} and M. Kitamura and P. Kitching and K. Kobayashi and T. Kobayashi and M. Kohama and A. Konaka and Yusuke Koshio and W. Kropp and J. Kubota and Yu Kudenko and G. Kume and Y. Kuno and Y. Kurimoto and T. Kutter and J. Learned and S. Likhoded and Lim, {I. T.} and Lim, {S. H.} and Loverre, {P. F.} and L. Ludovici and H. Maesaka and J. Mallet and C. Mariani and K. Martens and T. Maruyama and S. Matsuno and V. Matveev and C. Mauger and {McConnel Mahn}, {K. B.} and C. McGrew and S. Mikheyev and M. Minakawa and A. Minamino and S. Mine and O. Mineev and C. Mitsuda and G. Mitsuka and M. Miura and Y. Moriguchi and T. Morita and S. Moriyama and T. Nakadaira and M. Nakahata and K. Nakamura and I. Nakano and F. Nakata and T. Nakaya and S. Nakayama and T. Namba and R. Nambu and S. Nawang and K. Nishikawa and H. Nishino and S. Nishiyama and K. Nitta and S. Noda and H. Noumi and F. Nova and P. Novella and Y. Obayashi and A. Okada and K. Okumura and M. Okumura and M. Onchi and Ooyabu T and Oser, {S. M.} and T. Otaki and Y. Oyama and Pac, {M. Y.} and H. Park and F. Pierre and A. Rodriguez and C. Saji and A. Sakai and Makoto Sakuda and N. Sakurai and F. Sanchez and A. Sarrat and T. Sasaki and H. Sato and K. Sato and K. Scholberg and R. Schroeter and M. Sekiguchi and E. Seo and E. Sharkey and A. Shima and M. Shiozawa and K. Shiraishi and G. Sitjes and M. Smy and H. So and H. Sobel and M. Sorel and J. Stone and L. Sulak and Y. Suga and A. Suzuki and Y. Suzuki and Y. Suzuki and M. Tada and T. Takahashi and M. Takasaki and M. Takatsuki and Y. Takenaga and K. Takenaka and H. Takeuchi and Y. Takeuchi and K. Taki and Y. Takubo and N. Tamura and H. Tanaka and K. Tanaka and M. Tanaka and Y. Tanaka and K. Tashiro and R. Terri and S. T'Jampens and A. Tornero-Lopez and T. Toshito and Y. Totsuka and S. Ueda and M. Vagins and L. Whitehead and Walter, {C. W.} and W. Wang and Wilkes, {R. J.} and S. Yamada and Y. Yamada and S. Yamamoto and Y. Yamanoi and C. Yanagisawa and N. Yershov and H. Yokoyama and M. Yokoyama and J. Yoo and M. Yoshida and J. Zalipska",
year = "2006",
doi = "10.1103/PhysRevD.74.072003",
language = "English",
volume = "74",
journal = "Physical review D: Particles and fields",
issn = "0556-2821",
publisher = "American Physical Society",
number = "7",

}

TY - JOUR

T1 - Measurement of neutrino oscillation by the K2K experiment

AU - Ahn, M. H.

AU - Aliu, E.

AU - Andringa, S.

AU - Aoki, S.

AU - Aoyama, Y.

AU - Argyriades, J.

AU - Asakura, K.

AU - Ashie, R.

AU - Berghaus, F.

AU - Berns, H. G.

AU - Bhang, H.

AU - Blondel, A.

AU - Borghi, S.

AU - Bouchez, J.

AU - Boyd, S. C.

AU - Burguet-Castell, J.

AU - Casper, D.

AU - Catala, J.

AU - Cavata, C.

AU - Cervera, A.

AU - Chen, S. M.

AU - Cho, K. O.

AU - Choi, J. H.

AU - Dore, U.

AU - Echigo, S.

AU - Espinal, X.

AU - Fechner, M.

AU - Fernandez, E.

AU - Fujii, K.

AU - Fujii, Y.

AU - Fukuda, S.

AU - Fukuda, Y.

AU - Gomez-Cadenas, J.

AU - Gran, R.

AU - Hara, T.

AU - Hasegawa, M.

AU - Hasegawa, T.

AU - Hayashi, K.

AU - Hayato, Y.

AU - Helmer, R. L.

AU - Higuchi, I.

AU - Hill, J.

AU - Hiraide, K.

AU - Hirose, E.

AU - Hosaka, J.

AU - Ichikawa, A. K.

AU - Ieiri, M.

AU - Iinuma, M.

AU - Ikeda, A.

AU - Inagaki, T.

AU - Ishida, T.

AU - Ishihara, K.

AU - Ishii, H.

AU - Ishii, T.

AU - Ishino, Hirokazu

AU - Ishitsuka, M.

AU - Itow, Y.

AU - Iwashita, T.

AU - Jang, H. I.

AU - Jang, J. S.

AU - Jeon, E. J.

AU - Jeong, I. S.

AU - Joo, K. K.

AU - Jover, G.

AU - Jung, C. K.

AU - Kajita, T.

AU - Kameda, J.

AU - Kaneyuki, K.

AU - Kang, B. H.

AU - Kato, I.

AU - Kato, Y.

AU - Kearns, E.

AU - Kerr, D.

AU - Kim, C. O.

AU - Khabibullin, M.

AU - Khotjantsev, A.

AU - Kielczewska, D.

AU - Kim, B. J.

AU - Kim, H. I.

AU - Kim, J. H.

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PY - 2006

Y1 - 2006

N2 - We present measurements of νμ disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment. One-hundred and twelve beam-originated neutrino events are observed in the fiducial volume of Super-Kamiokande with an expectation of 158.1-8.6+9.2 events without oscillation. A distortion of the energy spectrum is also seen in 58 single-ring muonlike events with reconstructed energies. The probability that the observations are explained by the expectation for no neutrino oscillation is 0.0015% (4.3σ). In a two-flavor oscillation scenario, the allowed Δm2 region at sin 22θ=1 is between 1.9 and 3.5×10-3eV2 at the 90% C.L. with a best-fit value of 2.8×10-3eV2.

AB - We present measurements of νμ disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment. One-hundred and twelve beam-originated neutrino events are observed in the fiducial volume of Super-Kamiokande with an expectation of 158.1-8.6+9.2 events without oscillation. A distortion of the energy spectrum is also seen in 58 single-ring muonlike events with reconstructed energies. The probability that the observations are explained by the expectation for no neutrino oscillation is 0.0015% (4.3σ). In a two-flavor oscillation scenario, the allowed Δm2 region at sin 22θ=1 is between 1.9 and 3.5×10-3eV2 at the 90% C.L. with a best-fit value of 2.8×10-3eV2.

UR - http://www.scopus.com/inward/record.url?scp=33750008864&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33750008864&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.74.072003

DO - 10.1103/PhysRevD.74.072003

M3 - Article

AN - SCOPUS:33750008864

VL - 74

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 7

M1 - 072003

ER -