H
Hideki Watanabe
Researcher at Tohoku University
Publications - 77
Citations - 7346
Hideki Watanabe is an academic researcher from Tohoku University. The author has contributed to research in topics: Neutrino & Neutrino oscillation. The author has an hindex of 28, co-authored 76 publications receiving 6669 citations. Previous affiliations of Hideki Watanabe include National Institute of Advanced Industrial Science and Technology & Canon Inc..
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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
Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen.
A. Gando,Y. Gando,T. Hachiya,A. Hayashi,S. Hayashida,H. Ikeda,Kunio Inoue,Koji Ishidoshiro,Y. Karino,M. Koga,S. Matsuda,T. Mitsui,K. Nakamura,S. Obara,T. Oura,H. Ozaki,I. Shimizu,Y. Shirahata,J. Shirai,A. Suzuki,T. Takai,K. Tamae,Y. Teraoka,K. Ueshima,Hideki Watanabe,A. Kozlov,Y. Takemoto,S. Yoshida,Ken-Ichi Fushimi,T. I. Banks,B. E. Berger,B. K. Fujikawa,T. O'Donnell,Lindley Winslow,Yuri Efremenko,Hugon J Karwowski,D. M. Markoff,Werner Tornow,J. A. Detwiler,Sanshiro Enomoto,M. P. Decowski +40 more
TL;DR: An improved search for neutrinoless double-beta (0νββ) decay of ^{136}Xe in the KamLAND-Zen experiment is presented and a significant reduction of the xenon-loaded liquid scintillator contaminant identified in previous searches is achieved.
Journal ArticleDOI
Limit on neutrinoless ββ decay of Xe136 from the first phase of KamLAND-Zen and comparison with the positive claim in Ge76
A. Gando,Y. Gando,H. Hanakago,H. Ikeda,Kunio Inoue,Kunio Inoue,Koji Ishidoshiro,R. Kato,M. Koga,M. Koga,S. Matsuda,T. Mitsui,D. Motoki,T. Nakada,K. Nakamura,K. Nakamura,A. Obata,A. Oki,Y. Ono,M. Otani,I. Shimizu,J. Shirai,A. Suzuki,Y. Takemoto,K. Tamae,K. Ueshima,Hideki Watanabe,B. D. Xu,Sumio Yamada,Hidetomo Yoshida,A. Kozlov,S. Yoshida,T. I. Banks,T. I. Banks,Stuart J. Freedman,Stuart J. Freedman,Stuart J. Freedman,B. K. Fujikawa,B. K. Fujikawa,B. K. Fujikawa,Ke Han,Ke Han,T. O'Donnell,T. O'Donnell,B. E. Berger,Yu. Efremenko,Yu. Efremenko,Hugon J Karwowski,D. M. Markoff,Werner Tornow,J. A. Detwiler,Sanshiro Enomoto,Sanshiro Enomoto,M. P. Decowski,M. P. Decowski +54 more
TL;DR: The combined results from KamLAND-Zen and EXO-200 give T(1/2)(0ν)>3.4×10(25) yr at 90% C.L., which corresponds to a Majorana neutrino mass limit of <(120-250) meV based on a representative range of available matrix element calculations.
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
Constraints on θ13 from a three-flavor oscillation analysis of reactor antineutrinos at KamLAND
A. Gando,Y. Gando,Koichi Ichimura,H. Ikeda,Kunio Inoue,Kunio Inoue,Y. Kibe,Y. Kibe,Yasuhiro Kishimoto,M. Koga,M. Koga,Y. Minekawa,T. Mitsui,T. Morikawa,N. Nagai,K. Nakajima,K. Nakamura,K. Nakamura,K. Narita,I. Shimizu,Yasuhiro Shimizu,J. Shirai,F. Suekane,A. Suzuki,H. Takahashi,N. Takahashi,Y. Takemoto,K. Tamae,Hideki Watanabe,B. D. Xu,H. Yabumoto,Hiroshi Yoshida,Shijun Yoshida,Sanshiro Enomoto,Sanshiro Enomoto,A. Kozlov,Hitoshi Murayama,Hitoshi Murayama,C. Grant,G. Keefer,G. Keefer,A. Piepke,A. Piepke,T. I. Banks,T. Bloxham,J. A. Detwiler,Stuart J. Freedman,Stuart J. Freedman,B. K. Fujikawa,B. K. Fujikawa,Ke Han,R. W. Kadel,T. O'Donnell,H. M. Steiner,D. A. Dwyer,R. D. McKeown,Chao Zhang,B. E. Berger,C. E. Lane,J. Maricic,T. Miletic,T. Miletic,M. Batygov,J. G. Learned,S. Matsuno,M. Sakai,G. A. Horton-Smith,G. A. Horton-Smith,K. E. Downum,Giorgio Gratta,Yu. Efremenko,Yu. Efremenko,O. Perevozchikov,O. Perevozchikov,Hugon J Karwowski,Hugon J Karwowski,D. M. Markoff,D. M. Markoff,Werner Tornow,Werner Tornow,K. M. Heeger,K. M. Heeger,M. P. Decowski,M. P. Decowski +83 more
TL;DR: In this article, the neutrino oscillation parameters Δm^2_(21), θ-, 12, and θ_(13) from a three-flavor analysis of solar and KamLAND data are presented.