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
Constraints on neutrino oscillation parameters from the measurement of day-night solar neutrino fluxes at 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,P. G. Halverson,J. Hsu,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,Z. Conner,Z. Conner,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,T. Hasagawa,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,A. L. Stachyra,L. Wai,L. Wai,R. J. Wilkes,K. K. Young +124 more
TL;DR: In this article, a search for day-night variations in the solar neutrino flux resulting from neutrinos oscillations has been carried out using the 504 day sample of solar NE data obtained at Super-Kamiokande.
The Super-Kamiokande Collaboration
T. Futagami,Y. Fukuda,T. Hayakawa,Kunio Inoue,K. Ishihara,Hirokazu Ishino,Yoshitaka Itow,Takaaki Kajita,J. Kameda,S. Kasuga,Ken-ichiro Kobayashi,Y. Kobayashi,Yusuke Koshio,M. Miura,Masayuki Nakahata,S. Nakayama,Y. Obayashi,A. Okada,Kimihiro Okumura,Nobuyuki Sakurai,Masato Shiozawa,Yoshihiro Suzuki,H. Takeuchi,Y. Takeuchi,Y. Totsuka,Shoichi Yamada,M. Earl,Alec Habig,E. Kearns,M. D. Messier,Kate Scholberg,J. L. Stone,Lawrence Sulak,C. W. Walter,M. Goldhaber,T. Barszczak,David William Casper,W. Gajewski,W. R. Kropp,S. Mine,M. B. Smy,Henry W. Sobel,M. R. Vagins,K. S. Ganezer,W. E. Keig,R. W. Ellsworth,Shigeki Tasaka,A. Kibayashi,S. Matsuno,V. J. Stenger,D. Takemori,T. Ishii,Junichi Kanzaki,Takashi Kobayashi,K. Nakamura,K. Nishikawa,Y. Oyama,A. Sakai,Makoto Sakuda,Osamu Sasaki,S. Echigo,M. Kohama,A. T. Suzuki,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,W. Doki,M. Kirisawa,S. Inaba,H. Okazawa,M. Takahashi,K. Higuchi,Y. Nagashima,M. Takita,Takashi Yamaguchi,Michitoshi Yoshida,Soo-Bong Kim,M. Etoh,Akira Hasegawa,T. Hasegawa,S. Hatakeyama,T. Iwamoto,M. Koga,Tomoyuki Maruyama,H. Ogawa,J. Shirai,Atsumu Suzuki,F. Tsushima,M. Koshiba,Y. Hatakeyama,M. Koike,M. Nemoto,K. Nishijima,H. Fujiyasu,Y. Hayato,Y. Kanaya,K. Kaneyuki,Y. Watanabe,D. Kielczewska,A. L. Stachyra,R. J. Wilkes +112 more
TL;DR: A total of 614 upward through-going muons of minimum energy 1.6 GeV were observed by Super-Kamiokande during 537 detector live days as discussed by the authors.
Journal ArticleDOI
Atmospheric neutrino oscillation analysis with subleading effects in Super-Kamiokande I, II, and III
R. A. Wendell,C. Ishihara,K. Abe,Y. Hayato,T. Iida,M. Ikeda,K. Iyogi,J. Kameda,Ken-ichiro Kobayashi,Yusuke Koshio,Y. Kozuma,M. Miura,Shigetaka Moriyama,Masayuki Nakahata,Shoei Nakayama,Y. Obayashi,H. Ogawa,Hiroyuki Sekiya,Masato Shiozawa,Yasunari Suzuki,Atsushi Takeda,Y. Takenaga,Y. Takeuchi,Koh Ueno,K. Ueshima,Hiroshi Watanabe,S. Yamada,Tsutomu Yokozawa,S. Hazama,H. Kaji,Takaaki Kajita,K. Kaneyuki,T. McLachlan,Ko Okumura,Yasuhiro Shimizu,N. Tanimoto,Mark R. Vagins,Mark R. Vagins,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,Michael B. Smy,Michael 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,M. Fechner,Kate Scholberg,Kate Scholberg,C. W. Walter,C. W. Walter,S. Tasaka,J. G. Learned,S. Matsuno,Y. Watanabe,Takehisa Hasegawa,T. Ishida,T. Ishii,T. Kobayashi,T. Nakadaira,K. Nakamura,K. Nishikawa,H. Nishino,Yuichi Oyama,K. Sakashita,T. Sekiguchi,T. Tsukamoto,Atsumu Suzuki,A. Minamino,Tsuyoshi Nakaya,Tsuyoshi Nakaya,Y. Fukuda,Yoshitaka Itow,G. Mitsuka,Toshiyuki Tanaka,C. K. Jung,G. D. Lopez,C. McGrew,C. Yanagisawa,N. Tamura,Hirokazu Ishino,A. Kibayashi,S. Mino,T. Mori,Makoto Sakuda,H. Toyota,Y. Kuno,Minoru Yoshida,S. B. Kim,B. S. Yang,T. Ishizuka,H. Okazawa,Y. Choi,Kyoshi Nishijima,Y. Yokosawa,Masatoshi Koshiba,Masashi Yokoyama,Y. Totsuka,Song Chen,Y. Heng,Zishuo Yang,Huaqiao Zhang,D. Kielczewska,P. Mijakowski,K. Connolly,M. Dziomba,E. Thrane,E. Thrane,R. J. Wilkes +128 more
TL;DR: In this article, a search for nonzero {theta}{sub 13} and deviations of sin{sup 2{theta}}{sub 23} from 0.04(0.09) and 1.9(1.5) was conducted.
Journal ArticleDOI
Study of the atmospheric neutrino flux in the multi-GeV energy range
Y. Fukuda,T. Hayakawa,E. Ichihara,Kunio Inoue,K. Ishihara,H. Ishino,Yoshitaka Itow,Takaaki Kajita,J. Kameda,S. Kasuga,Ken-ichiro Kobayashi,Yohei Kobayashi,Yusuke Koshio,K. Martens,K. Martens,M. Miura,Masayuki Nakahata,S. Nakayama,A. Okada,M. Oketa,Ko Okumura,M. Ota,N. Sakurai,Masato Shiozawa,Yasunari Suzuki,Y. Takeuchi,Y. Totsuka,Shinya Yamada,M. Earl,Alec Habig,E. Kearns,S. B. Kim,S. B. Kim,M. D. Messier,Kate Scholberg,J. L. Stone,L. R. Sulak,C. W. Walter,M. Goldhaber,T. Barszczak,W. Gajewski,P. G. Halverson,J. Hsu,W. R. Kropp,L. R. Price,Frederick Reines,Henry W. Sobel,Mark R. Vagins,K. S. Ganezer,W. E. Keig,R. W. Ellsworth,Shigeki Tasaka,J. W. Flanagan,A. Kibayashi,John G. Learned,S. Matsuno,V. J. Stenger,D. Takemori,T. Ishii,Junichi Kanzaki,T. Kobayashi,K. Nakamura,K. Nishikawa,Yuichi Oyama,A. Sakai,Makoto Sakuda,O. Sasaki,S. Echigo,M. Kohama,A. T. Suzuki,Todd Haines,Todd Haines,E. Blaufuss,R. Sanford,R. Svoboda,M. L. Chen,Z. Conner,Z. Conner,J. A. Goodman,G. W. Sullivan,Masaki Mori,Masaki Mori,J. Hill,C. K. Jung,C. Mauger,C. McGrew,E. Sharkey,B. Viren,C. Yanagisawa,W. Doki,T. Ishizuka,T. Ishizuka,Y. Kitaguchi,H. Koga,Kazumasa Miyano,H. Okazawa,C. Saji,M. Takahata,A. Kusano,Y. Nagashima,M. Takita,Takashi Yamaguchi,Minoru Yoshida,M. Etoh,K. Fujita,Akira Hasegawa,Takehisa Hasegawa,S. Hatakeyama,T. Iwamoto,T. Kinebuchi,M. Koga,Tomoyuki Maruyama,Hiroshi Ogawa,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,A. L. Stachyra,L. Wai,J. Wilkes,K. K. Young +130 more
TL;DR: In this paper, the flavor ratio of the atmospheric neutrino flux and its zenith angle dependence have been studied in the multi-GeV energy range using an exposure of 25.5 kiloton-years of the Super-Kamiokande detector.
Journal ArticleDOI
Measurement of the Solar Neutrino Energy Spectrum Using Neutrino-Electron Scattering
Y. Fukuda,T. Hayakawa,E. Ichihara,Kunio Inoue,K. Ishihara,H. Ishino,Yoshitaka Itow,Takaaki Kajita,J. Kameda,S. Kasuga,Ken-ichiro Kobayashi,Yohei Kobayashi,Yusuke Koshio,M. Miura,Masayuki Nakahata,S. Nakayama,A. Okada,Ko Okumura,N. 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,P. G. Halverson,J. Hsu,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,A. T. Suzuki,Todd Haines,Todd Haines,E. Blaufuss,B. K. Kim,R. Sanford,R. Svoboda,M. L. Chen,Z. Conner,Z. Conner,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 +125 more
TL;DR: In this article, a measurement of the energy spectrum of recoil electrons from solar neutrino scattering in the Super-Kamiokande detector is presented, where the shape of the measured spectrum is compared with the expectation for solar {sup 8}B neutrinos.