K
K. Nishikawa
Researcher at KEK
Publications - 242
Citations - 28547
K. Nishikawa is an academic researcher from KEK. The author has contributed to research in topics: Neutrino & Neutrino oscillation. The author has an hindex of 74, co-authored 221 publications receiving 27043 citations. Previous affiliations of K. Nishikawa include University of Tokyo & Kyoto University.
Papers
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Journal ArticleDOI
Atmospheric vμ ve ratio in the multi-GeV energy range
Y. Fukuda,T. Hayakawa,Kunio Inoue,Takanori Ishida,S. Joukou,Takaaki Kajita,S. Kasuga,Yusuke Koshio,T. Kumita,Kunio Matsumoto,Masayuki Nakahata,K. Nakamura,Akito Sakai,Masato Shiozawa,J. Suzuki,Yasunari Suzuki,Y. Totsuka,K. S. Hirata,K. Kihara,Masaki Mori,Yuichi Oyama,A. T. Suzuki,M. Yamada,M. Koshiba,K. Nishijima,T. Kajimura,T. Suda,Atsumu Suzuki,T. Ishizuka,M. Koga,Kazumasa Miyano,H. Miyata,H. Okazawa,H. Takei,T. Hara,N. Kishi,Y. Nagashima,M. Takita,A. Yoshimoto,Y. Hayato,K. Kaneyuki,Y. Takeuchi,Toru Tanimori,Shigeki Tasaka,K. Nishikawa,E. W. Beier,E. D. Frank,W. Frati,Soo-Bong Kim,A.K. Mann,F. M. Newcomer,R. Van Berg,Weiya Zhang +52 more
TL;DR: In this article, the Kamiokande detector was used to study the atmospheric (v μ + v μ ) (v e + v e ) ratio in the multi-GeV energy range.
Journal ArticleDOI
Solar neutrino measurements in Super-Kamiokande-II
J. P. Cravens,K. Abe,T. Iida,K. Ishihara,J. Kameda,Yusuke Koshio,A. Minamino,C. Mitsuda,M. Miura,Shigetaka Moriyama,Masayuki Nakahata,Shoei Nakayama,Y. Obayashi,Hiroshi Ogawa,Hiroyuki Sekiya,Masato Shiozawa,Yasunari Suzuki,Atsushi Takeda,Y. Takeuchi,K. Ueshima,Haruki Watanabe,Shinya Yamada,I. Higuchi,C. Ishihara,M. Ishitsuka,Takaaki Kajita,K. Kaneyuki,G. Mitsuka,H. Nishino,Ko Okumura,C. Saji,Y. Takenaga,S. Clark,Shantanu Desai,Shantanu Desai,Frédéric Dufour,E. Kearns,S. Likhoded,Michael Litos,J. L. Raaf,J. L. Stone,Lawrence Sulak,W. Wang,M. Goldhaber,David William Casper,J. Dunmore,W. R. Kropp,D. W. Liu,S. Mine,C. Regis,Michael B. Smy,H. W. Sobel,H. W. Sobel,Mark R. Vagins,K. S. Ganezer,John Hill,W. E. Keig,J. S. Jang,J. Y. Kim,I. T. Lim,M. Fechner,Kate Scholberg,N. Tanimoto,C. W. Walter,R. A. Wendell,R. W. Ellsworth,Shigeki Tasaka,G. Guillian,John G. Learned,S. Matsuno,M. D. Messier,Y. Watanabe,Y. Hayato,A. K. Ichikawa,T. Ishida,T. Ishii,T. Iwashita,T. Kobayashi,T. Nakadaira,K. Nakamura,K. Nitta,Yuichi Oyama,Y. Totsuka,Atsumu Suzuki,Masaya Hasegawa,Katsuki Hiraide,I. Kato,I. Kato,H. Maesaka,Tsuyoshi Nakaya,K. Nishikawa,Takanori Sasaki,Hiroshi Sato,Shoji Yamamoto,Masashi Yokoyama,T. J. Haines,T. J. Haines,S. Dazeley,S. Hatakeyama,R. Svoboda,G. W. Sullivan,D. Turcan,Alec Habig,Y. Fukuda,T. Sato,Yoshitaka Itow,T. Koike,Toshiyuki Tanaka,C. K. Jung,T. Kato,Katsuhiro Kobayashi,Magdalena Malek,C. McGrew,A. Sarrat,R. Terri,C. Yanagisawa,N. Tamura,Y. Idehara,M. Ikeda,Makoto Sakuda,M. Sugihara,Y. Kuno,Minoru Yoshida,Soo-Bong Kim,B. S. Yang,J. Yoo,T. Ishizuka,H. Okazawa,Y. Choi,H. Seo,Y. Gando,Takehisa Hasegawa,Kunio Inoue,Y. Furuse,H. Ishii,Kyoshi Nishijima,Hirokazu Ishino,Masatoshi Koshiba,Shaomin Chen,Zhi Deng,Yueh-Feng Liu,D. Kielczewska,D. Kielczewska,H. G. Berns,R. Gran,R. Gran,K. K. Shiraishi,A. L. Stachyra,E. Thrane,K. Washburn,R. J. Wilkes +150 more
TL;DR: The results of the second phase of the Super-Kamiokande solar neutrino measurement are presented and compared to the first phase in this paper, showing no evidence of systematic tendencies between the first and second phases.
Journal ArticleDOI
Measurement of the Flux and Zenith-Angle Distribution of Upward Throughgoing Muons by Super-Kamiokande
Y. Fukuda,T. Hayakawa,E. Ichihara,Kunio Inoue,K. Ishihara,H. Ishino,Yoshitaka Itow,Takaaki Kajita,J. Kameda,S. Kasuga,Ken-ichiro Kobayashi,Y. Kobayashi,Yusuke Koshio,M. Miura,Masayuki Nakahata,Shoei Nakayama,A. Okada,Ko Okumura,Nobuyuki Sakurai,Masato Shiozawa,Yasunari Suzuki,Y. Takeuchi,Y. Totsuka,Shinya Yamada,M. Earl,Alec Habig,E. Kearns,M. D. Messier,Kate Scholberg,J. L. Stone,L. R. Sulak,C. W. Walter,M. Goldhaber,T. Barszczak,David William Casper,W. Gajewski,W. R. Kropp,L. R. Price,Frederick Reines,Michael B. Smy,H. W. Sobel,Mark R. Vagins,K. S. Ganezer,W. E. Keig,R. W. Ellsworth,S. Tasaka,J. W. Flanagan,A. Kibayashi,John G. Learned,S. Matsuno,V. J. Stenger,D. Takemori,T. Ishii,Junichi Kanzaki,T. Kobayashi,S. Mine,K. Nakamura,K. Nishikawa,Yuichi Oyama,A. Sakai,Makoto Sakuda,Osamu Sasaki,S. Echigo,M. Kohama,Atsumu Suzuki,Todd Haines,Todd Haines,E. Blaufuss,B. K. Kim,R. Sanford,R. Svoboda,M. L. Chen,J. A. Goodman,G. W. Sullivan,J. Hill,C. K. Jung,K. Martens,C. Mauger,C. McGrew,E. Sharkey,B. Viren,C. Yanagisawa,W. Doki,Kazumasa Miyano,H. Okazawa,C. Saji,M. Takahata,Y. Nagashima,M. Takita,Takashi Yamaguchi,Minoru Yoshida,Soo-Bong Kim,M. Etoh,K. Fujita,Akira Hasegawa,Takehisa Hasegawa,S. Hatakeyama,T. Iwamoto,M. Koga,Tomoyuki Maruyama,Hiroshi Ogawa,J. Shirai,A. Suzuki,F. Tsushima,Masatoshi Koshiba,M. Nemoto,Kyoshi Nishijima,T. Futagami,Y. Hayato,Y. Kanaya,K. Kaneyuki,Y. Watanabe,D. Kielczewska,D. Kielczewska,R. A. Doyle,J. S. George,J. S. George,A. L. Stachyra,L. Wai,L. Wai,R. J. Wilkes,K. K. Young +121 more
TL;DR: A total of 614 upward throughgoing muons were observed by Super-Kamiokande during 537 detector live days and the measured muon flux is [1.74{plus_minus} 0.02(sys)]{times} 10{sup {minus}13} cm{sup 2}thinsp2{theta} {gt}0.
Journal ArticleDOI
Solar neutrino results in Super-Kamiokande-III
K. Abe,Y. Hayato,T. Iida,M. Ikeda,M. Ikeda,C. Ishihara,K. Iyogi,J. Kameda,Ken-ichiro Kobayashi,Yusuke Koshio,Y. Kozuma,M. Miura,S. Moriyama,Masayuki Nakahata,S. Nakayama,Y. Obayashi,H. Ogawa,Hiroyuki Sekiya,Masato Shiozawa,Yasunari Suzuki,Atsushi Takeda,Y. Takenaga,Koh Ueno,K. Ueshima,Hiroshi Watanabe,S. Yamada,T. Yokozawa,S. Hazama,H. Kaji,Takaaki Kajita,K. Kaneyuki,T. McLachlan,Ko Okumura,Y. Shimizu,N. Tanimoto,M. R. Vagins,M. R. Vagins,L. Labarga,L. M. Magro,Frédéric Dufour,E. Kearns,E. Kearns,Michael Litos,J. L. Raaf,J. L. Stone,J. L. Stone,L. R. Sulak,W. Wang,W. Wang,M. Goldhaber,K. Bays,David William Casper,J. P. Cravens,W. R. Kropp,S. Mine,C. Regis,A. L. Renshaw,M. B. Smy,M. B. Smy,H. W. Sobel,H. W. Sobel,K. S. Ganezer,John Hill,W. E. Keig,J. S. Jang,J. Y. Kim,I. T. Lim,Justin Albert,R. A. Wendell,T. Wongjirad,Kate Scholberg,Kate Scholberg,C. W. Walter,C. W. Walter,T. Ishizuka,S. Tasaka,John G. Learned,S. Matsuno,Y. Watanabe,Takehisa Hasegawa,T. Ishida,T. Ishii,T. Kobayashi,T. Nakadaira,Koji Nakamura,K. Nishikawa,H. Nishino,Yuichi Oyama,Ken Sakashita,T. Sekiguchi,T. Tsukamoto,A. T. Suzuki,Y. Takeuchi,Y. Takeuchi,A. Minamino,Tsuyoshi Nakaya,Tsuyoshi Nakaya,Y. Fukuda,Yoshitaka Itow,G. Mitsuka,T. Tanaka,C. K. Jung,G. D. Lopez,C. McGrew,R. Terri,C. Yanagisawa,N. Tamura,Hirokazu Ishino,A. Kibayashi,S. Mino,Takaaki Mori,Makoto Sakuda,H. Toyota,Y. Kuno,Minoru Yoshida,S. B. Kim,B. S. Yang,H. Okazawa,Y. Choi,K. Nishijima,Y. Yokosawa,M. Koshiba,Y. Totsuka,Masashi Yokoyama,Song Chen,Y. Heng,Zishuo Yang,Haoxiong Zhang,D. Kielczewska,P. Mijakowski,K. Connolly,M. Dziomba,E. Thrane,E. Thrane,R. J. Wilkes +134 more
TL;DR: The results of the third phase of the Super-Kamiokande solar neutrino measurement are presented and compared to the first and second phase results in this article, where improved detector calibrations, a full detector simulation, and improved analysis methods are estimated to be approximately 2.1%, which is about two thirds of the systematic uncertainty for the first phase.
Journal ArticleDOI
Evidence for Muon Neutrino Oscillation in an Accelerator-Based Experiment
E. Aliu,S. Andringa,Shigeki Aoki,J. Argyriades,K. Asakura,R. Ashie,H. G. Berns,H. C. Bhang,A. Blondel,Silvia Borghi,J. Bouchez,Jordi Burguet-Castell,David William Casper,C. Cavata,A. Cervera,K. O. Cho,J. H. Choi,U. Dore,X. Espinal,M. Fechner,E. Fernandez,Y. Fukuda,J.J. Gómez-Cadenas,R. Gran,T. Hara,Masaya Hasegawa,Takehisa Hasegawa,K. Hayashi,Y. Hayato,R. L. Helmer,J. Hill,Katsuki Hiraide,J. Hosaka,A. K. Ichikawa,Masataka Iinuma,A. Ikeda,T. Inagaki,T. Ishida,K. Ishihara,T. Ishii,M. Ishitsuka,Yoshitaka Itow,T. Iwashita,H. I. Jang,E. J. Jeon,I. S. Jeong,K. K. Joo,G. Jover,C. K. Jung,Takaaki Kajita,J. Kameda,K. Kaneyuki,I. Kato,E. Kearns,D. Kerr,C. O. Kim,M. M. Khabibullin,A. N. Khotjantsev,D. Kielczewska,J. Y. Kim,S. B. Kim,P. Kitching,Katsuhiro Kobayashi,T. Kobayashi,A. Konaka,Yusuke Koshio,W. R. Kropp,J. Kubota,Yu. Kudenko,Yoshitaka Kuno,T. Kutter,T. Kutter,John G. Learned,S. Likhoded,I. T. Lim,P. F. Loverre,L. Ludovici,H. Maesaka,J. Mallet,C. Mariani,Tomoyuki Maruyama,S. Matsuno,V. A. Matveev,C. Mauger,K. McConnel,C. McGrew,S P Mikheyev,A. Minamino,S. Mine,O. V. Mineev,C. Mitsuda,M. Miura,Y. Moriguchi,Taichi Morita,Shigetaka Moriyama,T. Nakadaira,Masayuki Nakahata,K. Nakamura,Itsuo Nakano,Tsuyoshi Nakaya,Shoei Nakayama,Toshio Namba,R. Nambu,S. Nawang,K. Nishikawa,K. Nitta,F. Nova,P. Novella,Y. Obayashi,A. Okada,Ko Okumura,S. M. Oser,Yuichi Oyama,M. Y. Pac,F. Pierre,A. Rodriguez,C. Saji,Makoto Sakuda,Federico Sanchez,A. Sarrat,T. Sasaki,Kate Scholberg,Kate Scholberg,R. Schroeter,M. Sekiguchi,E. Sharkey,Masato Shiozawa,K. K. Shiraishi,G. Sitjes,Michael B. Smy,H. W. Sobel,J. L. Stone,Lawrence Sulak,A. Suzuki,Yoshihiro Suzuki,Tadayuki Takahashi,Y. Takenaga,Y. Takeuchi,K. Taki,Y. Takubo,N. Tamura,Masaaki Tanaka,R. Terri,Stephane T'Jampens,A. Tornero-Lopez,Y. Totsuka,S. Ueda,Mark R. Vagins,C. W. Walter,W. Wang,R. J. Wilkes,S. Yamada,Shoji Yamamoto,C. Yanagisawa,N. Yershov,H. Yokoyama,Masashi Yokoyama,J. Yoo,Minoru Yoshida,J. Zalipska +159 more
TL;DR: The energy-dependent disappearance of nu(mu), which the authors presume have oscillated to nu(tau), is observed in the KEK to Kamioka (K2K) long-baseline neutrino oscillation experiment.