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. Cervera; S. 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; H. 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; Y. 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; M. 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

doi:10.1103/PhysRevD.74.072003

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, H. 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, Y. 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, M. 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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

699 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 language	English
Article number	072003
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	74
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.74.072003
Publication status	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

Access to Document

10.1103/PhysRevD.74.072003

Cite this

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., ... Zalipska, J. (2006). Measurement of neutrino oscillation by the K2K experiment. Physical Review D - Particles, Fields, Gravitation and Cosmology, 74(7), Article 072003. https://doi.org/10.1103/PhysRevD.74.072003

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 - Particles, Fields, Gravitation and Cosmology, vol. 74, no. 7, 072003. https://doi.org/10.1103/PhysRevD.74.072003

@article{bb95e17ad8464ed0bbb415d89e834081,

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 H. 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 Y. 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 M. 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",

note = "Funding Information: This work was partly supported by RIKEN and Japan Atomic Energy Agency. The synchrotron radiation experiments were performed at BL22XU of SPring-8 with the approval of Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Nos. 2014A3713 and 2014B3713).",

year = "2006",

doi = "10.1103/PhysRevD.74.072003",

language = "English",

volume = "74",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

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, H.

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.

AU - Kim, J. Y.

AU - Kim, S. B.

AU - Kitamura, M.

AU - Kitching, P.

AU - Kobayashi, K.

AU - Kobayashi, T.

AU - Kohama, M.

AU - Konaka, A.

AU - Koshio, Y.

AU - Kropp, W.

AU - Kubota, J.

AU - Kudenko, Yu

AU - Kume, G.

AU - Kuno, Y.

AU - Kurimoto, Y.

AU - Kutter, T.

AU - Learned, J.

AU - Likhoded, S.

AU - Lim, I. T.

AU - Lim, S. H.

AU - Loverre, P. F.

AU - Ludovici, L.

AU - Maesaka, H.

AU - Mallet, J.

AU - Mariani, C.

AU - Martens, K.

AU - Maruyama, T.

AU - Matsuno, S.

AU - Matveev, V.

AU - Mauger, C.

AU - McConnel Mahn, K. B.

AU - McGrew, C.

AU - Mikheyev, S.

AU - Minakawa, M.

AU - Minamino, A.

AU - Mine, S.

AU - Mineev, O.

AU - Mitsuda, C.

AU - Mitsuka, G.

AU - Miura, M.

AU - Moriguchi, Y.

AU - Morita, T.

AU - Moriyama, S.

AU - Nakadaira, T.

AU - Nakahata, M.

AU - Nakamura, K.

AU - Nakano, I.

AU - Nakata, F.

AU - Nakaya, T.

AU - Nakayama, S.

AU - Namba, T.

AU - Nambu, R.

AU - Nawang, S.

AU - Nishikawa, K.

AU - Nishino, H.

AU - Nishiyama, S.

AU - Nitta, K.

AU - Noda, S.

AU - Noumi, H.

AU - Nova, F.

AU - Novella, P.

AU - Obayashi, Y.

AU - Okada, A.

AU - Okumura, K.

AU - Okumura, M.

AU - Onchi, M.

AU - T, Ooyabu

AU - Oser, S. M.

AU - Otaki, T.

AU - Oyama, Y.

AU - Pac, M. Y.

AU - Park, H.

AU - Pierre, F.

AU - Rodriguez, A.

AU - Saji, C.

AU - Sakai, A.

AU - Sakuda, M.

AU - Sakurai, N.

AU - Sanchez, F.

AU - Sarrat, A.

AU - Sasaki, T.

AU - Sato, H.

AU - Sato, K.

AU - Scholberg, K.

AU - Schroeter, R.

AU - Sekiguchi, M.

AU - Seo, E.

AU - Sharkey, E.

AU - Shima, A.

AU - Shiozawa, M.

AU - Shiraishi, K.

AU - Sitjes, G.

AU - Smy, M.

AU - So, H.

AU - Sobel, H.

AU - Sorel, M.

AU - Stone, J.

AU - Sulak, L.

AU - Suga, Y.

AU - Suzuki, A.

AU - Suzuki, Y.

AU - Tada, M.

AU - Takahashi, T.

AU - Takasaki, M.

AU - Takatsuki, M.

AU - Takenaga, Y.

AU - Takenaka, K.

AU - Takeuchi, H.

AU - Takeuchi, Y.

AU - Taki, K.

AU - Takubo, Y.

AU - Tamura, N.

AU - Tanaka, H.

AU - Tanaka, K.

AU - Tanaka, M.

AU - Tanaka, Y.

AU - Tashiro, K.

AU - Terri, R.

AU - T'Jampens, S.

AU - Tornero-Lopez, A.

AU - Toshito, T.

AU - Totsuka, Y.

AU - Ueda, S.

AU - Vagins, M.

AU - Whitehead, L.

AU - Walter, C. W.

AU - Wang, W.

AU - Wilkes, R. J.

AU - Yamada, S.

AU - Yamada, Y.

AU - Yamamoto, S.

AU - Yamanoi, Y.

AU - Yanagisawa, C.

AU - Yershov, N.

AU - Yokoyama, H.

AU - Yokoyama, M.

AU - Yoo, J.

AU - Yoshida, M.

AU - Zalipska, J.

N1 - Funding Information: This work was partly supported by RIKEN and Japan Atomic Energy Agency. The synchrotron radiation experiments were performed at BL22XU of SPring-8 with the approval of Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Nos. 2014A3713 and 2014B3713).

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.

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U2 - 10.1103/PhysRevD.74.072003

DO - 10.1103/PhysRevD.74.072003

M3 - Article

AN - SCOPUS:33750008864

SN - 1550-7998

VL - 74

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 7

M1 - 072003

ER -

Measurement of neutrino oscillation by the K2K experiment

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