K
K. Owada
Researcher at Tohoku University
Publications - 13
Citations - 3929
K. Owada is an academic researcher from Tohoku University. The author has contributed to research in topics: Neutrino oscillation & Solar neutrino. The author has an hindex of 9, co-authored 13 publications receiving 3748 citations.
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Journal ArticleDOI
First results from KamLAND: evidence for reactor antineutrino disappearance.
K. Eguchi,Sanshiro Enomoto,K. Furuno,J. Goldman,H. Hanada,H. Ikeda,Kiyohiro Ikeda,Kunio Inoue,K. Ishihara,W. Itoh,T. Iwamoto,Tomoya Kawaguchi,T. Kawashima,H. Kinoshita,Yasuhiro Kishimoto,M. Koga,Y. Koseki,T. Maeda,T. Mitsui,M. Motoki,K. Nakajima,M. Nakajima,T. Nakajima,Hiroshi Ogawa,K. Owada,T. Sakabe,I. Shimizu,J. Shirai,F. Suekane,A. Suzuki,K. Tada,Osamu Tajima,T. Takayama,K. Tamae,Hideki Watanabe,J. Busenitz,Z. Djurcic,K. McKinny,Dongming Mei,A. Piepke,E. Yakushev,B. E. Berger,Y. D. Chan,M. P. Decowski,D. A. Dwyer,Stuart J. Freedman,Y. Fu,B. K. Fujikawa,K. M. Heeger,K. T. Lesko,K. B. Luk,Hitoshi Murayama,D. R. Nygren,C. E. Okada,A. W. P. Poon,H. M. Steiner,Lindley Winslow,G. A. Horton-Smith,R. D. McKeown,J. Ritter,B. Tipton,Petr Vogel,C. E. Lane,T. Miletic,Peter Gorham,G. Guillian,John G. Learned,J. Maricic,S. Matsuno,Sandip Pakvasa,S. Dazeley,S. Hatakeyama,M. Murakami,R. Svoboda,B. D. Dieterle,M. DiMauro,J. A. Detwiler,Giorgio Gratta,K. Ishii,N. Tolich,Y. Uchida,M. Batygov,W. M. Bugg,H. O. Cohn,Yuri Efremenko,Yuri Kamyshkov,A. Kozlov,Y. Nakamura,L. De Braeckeleer,L. De Braeckeleer,C. R. Gould,C. R. Gould,Hugon J Karwowski,Hugon J Karwowski,D. M. Markoff,D. M. Markoff,J. A. Messimore,J. A. Messimore,Koji Nakamura,Koji Nakamura,Ryan Rohm,Ryan Rohm,Werner Tornow,Werner Tornow,Albert Young,Albert Young,Y. F. Wang +106 more
TL;DR: In the context of two-flavor neutrino oscillations with CPT invariance, all solutions to the solar neutrinos problem except for the "large mixing angle" region are excluded.
Journal ArticleDOI
Measurement of neutrino oscillation with KamLAND: evidence of spectral distortion.
T. Araki,K. Eguchi,Sanshiro Enomoto,K. Furuno,Koichi Ichimura,H. Ikeda,Kunio Inoue,K. Ishihara,K. Ishihara,T. Iwamoto,T. Iwamoto,T. Kawashima,Yasuhiro Kishimoto,M. Koga,Y. Koseki,T. Maeda,T. Mitsui,M. Motoki,K. Nakajima,Hiroshi Ogawa,K. Owada,J. S. Ricol,I. Shimizu,J. Shirai,F. Suekane,A. Suzuki,K. Tada,Osamu Tajima,K. Tamae,Y. Tsuda,Hiroko Watanabe,J. Busenitz,T. Classen,Z. Djurcic,G. Keefer,K. McKinny,Dongming Mei,Dongming Mei,A. Piepke,E. Yakushev,B. E. Berger,B. E. Berger,Y. D. Chan,Y. D. Chan,M. P. Decowski,M. P. Decowski,D. A. Dwyer,D. A. Dwyer,Stuart J. Freedman,Stuart J. Freedman,Y. Fu,Y. Fu,B. K. Fujikawa,B. K. Fujikawa,J. Goldman,J. Goldman,Frederick Gray,Frederick Gray,K. M. Heeger,K. M. Heeger,K. T. Lesko,K. T. Lesko,Kam Biu Luk,Kam Biu Luk,Hitoshi Murayama,Hitoshi Murayama,A. W. P. Poon,A. W. P. Poon,H. M. Steiner,H. M. Steiner,Lindley Winslow,Lindley Winslow,G. A. Horton-Smith,G. A. Horton-Smith,C. Mauger,R. D. McKeown,Petr Vogel,C. E. Lane,T. Miletic,Peter Gorham,G. Guillian,John G. Learned,J. Maricic,S. Matsuno,Sandip Pakvasa,S. Dazeley,S. Hatakeyama,A. Rojas,Robert Svoboda,B. D. Dieterle,J. A. Detwiler,Giorgio Gratta,K. Ishii,N. Tolich,Y. Uchida,Y. Uchida,M. Batygov,W. M. Bugg,Yuri Efremenko,Y. Kamyshkov,A. Kozlov,Y. Nakamura,C. R. Gould,C. R. Gould,Hugon J Karwowski,Hugon J Karwowski,D. M. Markoff,D. M. Markoff,J. A. Messimore,J. A. Messimore,Koji Nakamura,Koji Nakamura,Ryan Rohm,Ryan Rohm,Werner Tornow,Werner Tornow,R. Wendell,R. Wendell,Albert Young,Albert Young,M. J. Chen,Y. F. Wang,F. Piquemal +122 more
TL;DR: In this article, a study of neutrino oscillation based on a 766 ton/year exposure of KamLAND to reactor antineutrinos is presented, where the observed energy spectrum disagrees with the expected spectral shape.
Journal ArticleDOI
Experimental investigation of geologically produced antineutrinos with KamLAND
T. Araki,Sanshiro Enomoto,K. Furuno,Y. Gando,Koichi Ichimura,H. Ikeda,Kunio Inoue,Yasuhiro Kishimoto,M. Koga,Y. Koseki,T. Maeda,T. Mitsui,M. Motoki,K. Nakajima,Hiroshi Ogawa,M. Ogawa,K. Owada,J. S. Ricol,I. Shimizu,J. Shirai,F. Suekane,A. Suzuki,K. Tada,Sakae Takeuchi,K. Tamae,Y. Tsuda,Hideki Watanabe,J. Busenitz,T. Classen,Z. Djurcic,G. Keefer,David Leonard,A. Piepke,E. Yakushev,B. E. Berger,Y. D. Chan,M. P. Decowski,D. A. Dwyer,Stuart J. Freedman,B. K. Fujikawa,J. Goldman,Frederick Gray,K. M. Heeger,L. Hsu,K. T. Lesko,K. B. Luk,Hitoshi Murayama,T. O'Donnell,A. W. P. Poon,H. M. Steiner,Lindley Winslow,C. Mauger,R. D. McKeown,Petr Vogel,C. E. Lane,T. Miletic,G. Guillian,John G. Learned,J. Maricic,S. Matsuno,Sandip Pakvasa,G. A. Horton-Smith,S. Dazeley,S. Hatakeyama,A. Rojas,R. Svoboda,B. D. Dieterle,J. A. Detwiler,Giorgio Gratta,K. Ishii,N. Tolich,Y. Uchida,M. Batygov,W. M. Bugg,Yuri Efremenko,Yuri Kamyshkov,A. Kozlov,Y. Nakamura,Hugon J Karwowski,Hugon J Karwowski,Hugon J Karwowski,D. M. Markoff,D. M. Markoff,D. M. Markoff,Koji Nakamura,Koji Nakamura,Koji Nakamura,Ryan Rohm,Ryan Rohm,Ryan Rohm,Werner Tornow,Werner Tornow,Werner Tornow,R. A. Wendell,R. A. Wendell,R. A. Wendell,M. J. Chen,Y. F. Wang,F. Piquemal +98 more
TL;DR: Although the present data have limited statistical power, they nevertheless provide by direct means an upper limit for the radiogenic power of U and Th in the Earth, a quantity that is currently poorly constrained.
Journal ArticleDOI
High sensitivity search for nu;e's from the sun and other sources at KamLAND.
K. Eguchi,Sanshiro Enomoto,K. Furuno,H. Ikeda,Kiyohiro Ikeda,Kunio Inoue,K. Ishihara,T. Iwamoto,T. Kawashima,Yasuhiro Kishimoto,M. Koga,Y. Koseki,T. Maeda,T. Mitsui,M. Motoki,K. Nakajima,Hiroshi Ogawa,K. Owada,F. Piquemal,I. Shimizu,J. Shirai,F. Suekane,A. Suzuki,K. Tada,Osamu Tajima,T. Takayama,K. Tamae,Hideki Watanabe,J. Busenitz,Z. Djurcic,K. McKinny,Dongming Mei,A. Piepke,E. Yakushev,B. E. Berger,Y. D. Chan,M. P. Decowski,D. A. Dwyer,Stuart J. Freedman,Y. Fu,B. K. Fujikawa,J. Goldman,K. M. Heeger,K. T. Lesko,Kam-Biu Luk,Hitoshi Murayama,D. R. Nygren,C. E. Okada,A. W. P. Poon,H. M. Steiner,Lindley Winslow,G. A. Horton-Smith,C. Mauger,R. D. McKeown,B. Tipton,Petr Vogel,C. E. Lane,T. Miletic,Peter Gorham,G. Guillian,J. G. Learned,J. Maricic,S. Matsuno,Sandip Pakvasa,S. Dazeley,S. Hatakeyama,R. Svoboda,B. D. Dieterle,M. DiMauro,J. A. Detwiler,Giorgio Gratta,K. Ishii,N. Tolich,Y. Uchida,M. Batygov,W. M. Bugg,Yu. Efremenko,Yuri Kamyshkov,A. Kozlov,Y. Nakamura,C. R. Gould,Hugon J Karwowski,D. M. Markoff,J. A. Messimore,K. Nakamura,Ryan Rohm,Werner Tornow,Albert Young,M. J. Chen,Y. F. Wang +89 more
TL;DR: In this paper, the authors obtained an upper bound of $3.7 for the expected background of $1.4$ events in the energy range of 0.28 kton yr.
Journal Article
High Sensitivity Search for ν̄e's from the Sun and Other Sources at KamLAND
K. Eguchi,Sanshiro Enomoto,K. Furuno,H. Ikeda,Kiyohiro Ikeda,Kunio Inoue,K. Ishihara,K. Ishihara,Iwamoto,Iwamoto,T. Kawashima,Yasuhiro Kishimoto,M. Koga,Y. Koseki,T. Maeda,T. Mitsui,M. Motoki,K. Nakajima,Hiroshi Ogawa,K. Owada,F. Piquemal,I. Shimizu,J. Shirai,F. Suekane,A. Suzuki,K. Tada,Osamu Tajima,T. Takayama,K. Tamae,Hideki Watanabe,J. Busenitz,Z. Djurcic,K. McKinny,Dongming Mei,A. Piepke,E. Yakushev,B. E. Berger,Y. D. Chan,M. P. Decowski,D. A. Dwyer,Stuart J. Freedman,Y. Fu,B. K. Fujikawa,J. Goldman,K. M. Heeger,K. T. Lesko,Kam-Biu Luk,Hitoshi Murayama,D. R. Nygren,C. E. Okada,A. W. P. Poon,H. M. Steiner,Lindley Winslow,G. A. Horton-Smith,C. Mauger,R. D. McKeown,B. Tipton,Petr Vogel,C. E. Lane,T. Miletic,Peter Gorham,G. Guillian,J. G. Learned,J. Maricic,S. Matsuno,Sandip Pakvasa,S. Dazeley,S. Hatakeyama,R. Svoboda,B. D. Dieterle,M. DiMauro,J. A. Detwiler,Giorgio Gratta,K. Ishii,N. Tolich,Y. Uchida,M. Batygov,W. M. Bugg,Yu. Efremenko,Yuri Kamyshkov,A. Kozlov,Y. Nakamura,C. R. Gould,Hugon J Karwowski,D. M. Markoff,J. A. Messimore,K. Nakamura,Ryan Rohm,Werner Tornow,Albert Young,M. J. Chen,Y. F. Wang +91 more