Y
Y. Obayashi
Researcher at University of Tokyo
Publications - 86
Citations - 10301
Y. Obayashi is an academic researcher from University of Tokyo. The author has contributed to research in topics: Neutrino & Neutrino oscillation. The author has an hindex of 47, co-authored 79 publications receiving 9657 citations. Previous affiliations of Y. Obayashi include KEK & Institute for the Physics and Mathematics of the Universe.
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Journal ArticleDOI
The T2K Experiment
K. Abe,N. Abgrall,Hiroaki Aihara,Yasuo Ajima,Justin Albert,D. Allan,P. Amaudruz,C. Andreopoulos,B. Andrieu,Michael Anerella,C. Angelsen,Shigeki Aoki,O. Araoka,J. Argyriades,Akitaka Ariga,Tomoko Ariga,S. Assylbekov,J. P. A. M. de André,D. Autiero,A. Badertscher,O. Ballester,M. Barbi,Gareth J. Barker,P. Baron,G.D. Barr,L. Bartoszek,M. Batkiewicz,F. Bay,S. W. Bentham,Vincenzo Berardi,B. E. Berger,H. G. Berns,Iain Alexander Bertram,M. Besnier,J. Beucher,Dmitriy Beznosko,S. Bhadra,P. Birney,P. Birney,D. Bishop,Ewart W. Blackmore,F. d. M. Blaszczyk,J. Blocki,A. Blondel,A. Bodek,C. Bojechko,J. Bouchez,T. Boussuge,S. B. Boyd,M. Boyer,N. Braam,R. Bradford,A. Bravar,K. Briggs,J. Brinson,C. Bronner,D. G. Brook-Roberge,M. Bryant,N. J. Buchanan,Hs Budd,M. Cadabeschi,R. G. Calland,David Calvet,J. Caravaca Rodríguez,J. Carroll,S. L. Cartwright,A. Carver,R. Castillo,M. G. Catanesi,C. Cavata,A. Cazes,A. Cervera,J. P. Charrier,Carlos A. Chavez,Suyong Choi,S. Chollet,G. Christodoulou,P. Colas,J. P. Coleman,W. Coleman,G. Collazuol,Kevin Connolly,P. Cooke,A. Curioni,A. Dabrowska,I. Z. Danko,Rituparna Das,Gavin Davies,Scott Davis,M. Day,X. De La Broise,P. de Perio,G. De Rosa,T. Dealtry,T. Dealtry,A. Debraine,E. Delagnes,A. Delbart,C. Densham,F. Di Lodovico,S. Di Luise,P. Dinh Tran,J. Dobson,J. Doornbos,U. Dore,O. Drapier,F. Druillole,Frédéric Dufour,J. Dumarchez,T. Durkin,S. Dytman,Michal Dziewiecki,M. Dziomba,B. Ellison,S. W. K. Emery,Antonio Ereditato,J. Escallier,L. Escudero,Luigi Salvatore Esposito,W. Faszer,M. Fechner,A. Ferrero,Alexander Finch,C. Fisher,M. Fitton,R. Flight,D. A. Forbush,E. Frank,K. B. Fransham,Y. Fujii,Y. Fukuda,M. Gallop,V. Galymov,G. Ganetis,Fred Gannaway,A. Gaudin,J. Gaweda,A. Gendotti,M. A. George,S. Giffin,C. Giganti,K. Gilje,Ioannis Giomataris,J. Giraud,A.K. Ghosh,T. Golan,M. Goldhaber,J. J. Gomez-Cadenas,S. Gomi,M. Gonin,M. Goyette,Alastair Grant,N. Grant,Ferran Grañena,S. Greenwood,P. Gumplinger,P. Guzowski,M. D. Haigh,K. Hamano,C. Hansen,T. Hara,P. F. Harrison,B. Hartfiel,M. Hartz,M. Hartz,Tomiyoshi Haruyama,R. Hasanen,T. Hasegawa,N. C. Hastings,S. Hastings,A. Hatzikoutelis,K. Hayashi,Yoshinari Hayato,T. D. J. Haycock,C. Hearty,R. L. Helmer,Robert Henderson,S. Herlant,Norio Higashi,Joshua Hignight,Katsuki Hiraide,Eiichi Hirose,J. Holeczek,N. Honkanen,S. Horikawa,A. Hyndman,A. K. Ichikawa,K. Ieki,M. Ieva,M. Iida,M. Ikeda,J. Ilic,J. Imber,T. Ishida,C. Ishihara,T. Ishii,S. J. Ives,M. Iwasaki,K. Iyogi,A. Izmaylov,B. Jamieson,R. A. Johnson,K. K. Joo,G. Jover-Manas,C. K. Jung,H. Kaji,Takaaki Kajita,H. Kakuno,J. Kameda,K. Kaneyuki,D. Karlen,D. Karlen,Katsuyu Kasami,V. Kasey,I. Kato,Hiroyuki Kawamuko,E. Kearns,L. Kellet,M. M. Khabibullin,M. Khaleeq,Nadeem A. Khan,A. N. Khotjantsev,D. Kielczewska,T. Kikawa,J. Y. Kim,Soo-Bong Kim,N. Kimura,B. Kirby,J. Kisiel,P. Kitching,T. Kobayashi,G. Kogan,S. Koike,T. Komorowski,A. Konaka,L. L. Kormos,A. Korzenev,K. Koseki,Yusuke Koshio,Y. Kouzuma,K. Kowalik,V. Kravtsov,I. Kreslo,W. R. Kropp,Hidetoshi Kubo,J. Kubota,Yu. Kudenko,N. Kulkarni,Leonid Kurchaninov,Y. Kurimoto,R.P. Kurjata,Y. Kurosawa,T. Kutter,J. Lagoda,K. Laihem,R. Langstaff,R. Langstaff,Marco Laveder,T. B. Lawson,P. T. Le,A. Le Coguie,M. Le Ross,K. P. Lee,M. Lenckowski,M. Lenckowski,C. Licciardi,I. T. Lim,T. Lindner,R. P. Litchfield,R. P. Litchfield,A. Longhin,G. D. Lopez,Ping Lu,L. Ludovici,Thorsten Lux,M. Macaire,L. Magaletti,Kendall Mahn,Yasuhiro Makida,C. J. Malafis,M. Malek,S. Manly,A. Marchionni,C. Mark,A. D. Marino,A. D. Marino,Andrew Marone,J. Marteau,J. F. Martin,T. Maruyama,T. Maryon,J. Marzec,P. Masliah,E. L. Mathie,C. Matsumura,Kodai Matsuoka,Viktor Matveev,K. Mavrokoridis,E. Mazzucato,N. McCauley,Kevin Scott McFarland,C. McGrew,T. McLachlan,I. Mercer,M. Messina,W. Metcalf,C. J. Metelko,M. Mezzetto,P. Mijakowski,C. A. Miller,A. Minamino,Oleg Mineev,S. Mine,R. E. Minvielle,G. Mituka,M. Miura,K. Mizouchi,J.P. Mols,L. Monfregola,E. Monmarthe,F. Moreau,B. Morgan,S. Moriyama,D. Morris,A. Muir,A. Murakami,Joseph Muratore,M. Murdoch,S. Murphy,J. Myslik,G. Nagashima,T. Nakadaira,Masayuki Nakahata,Tatsushi Nakamoto,K. Nakamura,S. Nakayama,Tsuyoshi Nakaya,D. Naples,Barry L. Nelson,T. C. Nicholls,K. Nishikawa,H. Nishino,K. Nitta,F. Nizery,J. A. Nowak,M. Noy,Y. Obayashi,Toru Ogitsu,Hirokatsu Ohhata,Takahiro Okamura,Kimihiro Okumura,T. Okusawa,C. Ohlmann,K. Olchanski,R. Openshaw,S. M. Oser,Minoru Otani,R. A. Owen,Yuichi Oyama,T. Ozaki,M. Y. Pac,V. Palladino,V. Paolone,P. Paul,D. Payne,G. F. Pearce,C. J. Pearson,J. D. Perkin,M. Pfleger,F. Pierre,D. Pierrepont,P. Plonski,P. Poffenberger,E. Poplawska,B. A. Popov,B. A. Popov,M. Posiadala,J. M. Poutissou,R. Poutissou,Robert D. Preece,P. Przewlocki,W. Qian,J. L. Raaf,E. Radicioni,Kieran P. Ramos,P. N. Ratoff,T. M. Raufer,M. Ravonel,Michel Raymond,F. Retiere,D. Richards,J. L. Ritou,A. Robert,P. A. Rodrigues,E. Rondio,Michael Roney,M. Rooney,D. Ross,Biagio Rossi,S. Roth,André Rubbia,D. Ruterbories,R. Sacco,S. W. Sadler,Ken Sakashita,Federico Sanchez,A. Sarrat,K. Sasaki,P. Schaack,Julien Schmidt,Kate Scholberg,J. Schwehr,Mark Scott,D. I. Scully,Y. Seiya,T. Sekiguchi,Hiroyuki Sekiya,G. Sheffer,M. Shibata,Y. Shimizu,Masato Shiozawa,S. Short,M. Siyad,D. Smith,Richard J.H. Smith,M. B. Smy,Jan T. Sobczyk,Henry W. Sobel,S. Sooriyakumaran,M. Sorel,J. Spitz,Achim Stahl,P. Stamoulis,O. Star,J. Statter,L. Stawnyczy,J. Steinmann,J. Steffens,B. Still,Marek Stodulski,J. L. Stone,C. Strabel,T. Strauss,R. Sulej,P. Sutcliffe,A. Suzuki,K. Suzuki,S. Y. Suzuki,Sy Suzuki,Yoshihiro Suzuki,J. Swierblewski,T. Szeglowski,M. Szeptycka,R. Tacik,M. Tada,A. S. Tadepalli,M. Taguchi,Susumu Takahashi,Atsushi Takeda,Y. Takenaga,Y. Takeuchi,H.A. Tanaka,Kenichi Tanaka,Masashi Tanaka,M. M. Tanaka,N. Tanimoto,K. Tashiro,I. Taylor,I. Taylor,A. Terashima,D. Terhorst,R. Terri,Lester D.R. Thompson,A. Thorley,M. Thorpe,W. Toki,W. Toki,Takayuki Tomaru,Y. Totsuka,C. Touramanis,T. Tsukamoto,V. Tvaskis,M. Tzanov,M. Tzanov,Y. Uchida,Koh Ueno,M. Usseglio,Antonin Vacheret,M. Vagins,J. F. van Schalkwyk,Jean-Charles Vanel,G. Vasseur,Omar Veledar,P. Vincent,T. Wachala,A. V. Waldron,C. W. Walter,P. Wanderer,M. A. Ward,G. P. Ward,D. L. Wark,D. L. Wark,D. Warner,M. O. Wascko,A. C. Weber,A. C. Weber,R. A. Wendell,J. Wendland,N. West,Leigh H. Whitehead,G. Wikström,R. J. Wilkes,M. J. Wilking,Z. Williamson,J. R. Wilson,Robert Wilson,K. Wong,T. Wongjirad,Shinya Yamada,Yoshikazu Yamada,A. Yamamoto,Koji Yamamoto,Yutaka Yamanoi,Hiroshi Yamaoka,C. Yanagisawa,C. Yanagisawa,T. Yano,S. Yen,N. Yershov,Masashi Yokoyama,A. Zalewska,J. Zalipska,K. Zaremba,M. Ziembicki,E. D. Zimmerman,M. Zito,J. Zmuda +536 more
TL;DR: The T2K experiment as discussed by the authors is a long-baseline neutrino oscillation experiment whose main goal is to measure the last unknown lepton sector mixing angle by observing its appearance in a particle beam generated by the J-PARC accelerator.
Journal ArticleDOI
Measurement of atmospheric neutrino oscillation parameters by Super-Kamiokande I
Y. Ashie,J. Hosaka,K. Ishihara,Yoshitaka Itow,J. Kameda,Yusuke Koshio,A. Minamino,C. Mitsuda,M. Miura,Shigetaka Moriyama,Masayuki Nakahata,Toshio Namba,R. Nambu,Y. Obayashi,Masato Shiozawa,Yoshihiro Suzuki,Y. Takeuchi,K. Taki,Shinya Yamada,M. Ishitsuka,Takaaki Kajita,K. Kaneyuki,Shoei Nakayama,A. Okada,Ko Okumura,C. Saji,Y. Takenaga,S. Clark,Shantanu Desai,E. Kearns,S. Likhoded,J. L. Stone,L. R. Sulak,W. Wang,M. Goldhaber,David William Casper,J. P. Cravens,W. Gajewski,W. R. Kropp,D. W. Liu,S. Mine,Michael B. Smy,Henry W. Sobel,C. W. Sterner,Mark R. Vagins,K. S. Ganezer,John Hill,W. E. Keig,J. S. Jang,J. Y. Kim,I. T. Lim,Kate Scholberg,C. W. Walter,R. W. Ellsworth,S. Tasaka,G. Guillian,A. Kibayashi,John G. Learned,S. Matsuno,D. Takemori,M. D. Messier,Y. Hayato,A. K. Ichikawa,T. Ishida,T. Ishii,T. Iwashita,Takashi Kobayashi,T. Maruyama,Koji Nakamura,K. Nitta,Yuichi Oyama,Makoto Sakuda,Y. Totsuka,Atsumu Suzuki,Masaya Hasegawa,K. Hayashi,I. Kato,H. Maesaka,Taichi Morita,Tsuyoshi Nakaya,K. Nishikawa,T. Sasaki,S. Ueda,Shoji Yamamoto,Todd Haines,Todd Haines,S. Dazeley,S. Hatakeyama,R. Svoboda,E. Blaufuss,J. A. Goodman,G. W. Sullivan,D. Turcan,Alec Habig,Y. Fukuda,C. K. Jung,T. Kato,Katsuhiro Kobayashi,Magdalena Malek,C. Mauger,C. McGrew,A. Sarrat,E. Sharkey,C. Yanagisawa,T. Toshito,Kazumasa Miyano,N. Tamura,J. Ishii,Y. Kuno,Minoru Yoshida,S. B. Kim,J. Yoo,H. Okazawa,T. Ishizuka,Y. Choi,H. Seo,Y. Gando,Takehisa Hasegawa,Kunio Inoue,J. Shirai,A. Suzuki,Masatoshi Koshiba,Y. Nakajima,Kyoshi Nishijima,T. Harada,Hirokazu Ishino,Y. Watanabe,D. Kielczewska,D. Kielczewska,J. Zalipska,H. G. Berns,R. Gran,K. K. Shiraishi,A. L. Stachyra,K. Washburn,R. J. Wilkes +135 more
TL;DR: In this article, a combined analysis of fully-contained, partially-contained and upward-going muon atmospheric neutrino data from a 1489 d exposure of the Super-Kamiokande detector is presented.
Journal ArticleDOI
Measurement of neutrino oscillation by the K2K experiment
M. H. Ahn,E. Aliu,S. Andringa,Shigeki Aoki,Y. Aoyama,J. Argyriades,K. Asakura,R. Ashie,F. Berghaus,H. G. Berns,H. C. Bhang,A. Blondel,Silvia Borghi,J. Bouchez,S. C. Boyd,Jordi Burguet-Castell,David William Casper,J. Catala,C. Cavata,A. Cervera,Shaomin 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.J. Gómez-Cadenas,R. Gran,T. Hara,Masaya Hasegawa,Takehisa Hasegawa,K. Hayashi,Y. Hayato,R. L. Helmer,I. Higuchi,J. Hill,Katsuki Hiraide,E. Hirose,J. Hosaka,A. K. Ichikawa,Masaharu Ieiri,Masataka Iinuma,A. Ikeda,T. Inagaki,T. Ishida,K. Ishihara,H. Ishii,T. Ishii,Hirokazu Ishino,Masaki Ishitsuka,Yoshitaka Itow,T. Iwashita,H. I. Jang,J. S. Jang,E. J. Jeon,I. S. Jeong,K. K. Joo,G. Jover,C. K. Jung,Takaaki Kajita,J. Kameda,K. Kaneyuki,B. H. Kang,I. Kato,Y. Kato,E. Kearns,D. Kerr,C. O. Kim,M. M. Khabibullin,A. N. Khotjantsev,D. Kielczewska,Beom Jun Kim,Hyosun Kim,J.H. Kim,J. Y. Kim,S. B. Kim,M. Kitamura,P. Kitching,Katsuhiro Kobayashi,Takashi Kobayashi,M. Kohama,A. Konaka,Yusuke Koshio,W. R. Kropp,J. Kubota,Yu. Kudenko,G. Kume,Yoshitaka Kuno,Y. Kurimoto,T. Kutter,T. Kutter,John G. Learned,S. Likhoded,I. T. Lim,S. H. Lim,P. F. Loverre,L. Ludovici,H. Maesaka,J. Mallet,C. Mariani,K. Martens,Tomoyuki Maruyama,S. Matsuno,V. A. Matveev,C. Mauger,K. B. McConnel Mahn,C. McGrew,S P Mikheyev,M. Minakawa,A. Minamino,S. Mine,O. V. Mineev,C. Mitsuda,G. Mitsuka,M. Miura,Y. Moriguchi,Taichi Morita,Shigetaka Moriyama,T. Nakadaira,Masayuki Nakahata,K. Nakamura,Itsuo Nakano,F. Nakata,Tsuyoshi Nakaya,Shoei Nakayama,Toshio Namba,R. Nambu,S. Nawang,K. Nishikawa,H. Nishino,Shogo Nishiyama,K. Nitta,Susumu Noda,Hiroyuki Noumi,F. Nova,P. Novella,Y. Obayashi,A. Okada,Ko Okumura,M. Okumura,M. Onchi,T. Ooyabu,S. M. Oser,T. Otaki,Yuichi Oyama,M. Y. Pac,H. Park,F. Pierre,A. Rodriguez,C. Saji,A. Sakai,Makoto Sakuda,Nobuyuki Sakurai,Federico Sanchez,A. Sarrat,Takanori Sasaki,Hiroshi Sato,K. Sato,Kate Scholberg,Kate Scholberg,R. Schroeter,M. Sekiguchi,E. Seo,E. Sharkey,A. Shima,Masato Shiozawa,K. K. Shiraishi,G. Sitjes,Michael B. Smy,H. So,Henry W. Sobel,M. Sorel,J. L. Stone,Lawrence Sulak,Y. Suga,A. Suzuki,Yoshihiro Suzuki,M. Tada,Tadayuki Takahashi,M. Takasaki,M. Takatsuki,Y. Takenaga,K. Takenaka,H. Takeuchi,Y. Takeuchi,K. Taki,Y. Takubo,N. Tamura,H. Tanaka,Kenichi Tanaka,Masaaki Tanaka,Y. Tanaka,K. Tashiro,R. Terri,Stephane T'Jampens,A. Tornero-Lopez,T. Toshito,Y. Totsuka,S. Ueda,Mark R. Vagins,L. Whitehead,C. W. Walter,W. Wang,R. J. Wilkes,Shinya Yamada,Y. Yamada,Shoji Yamamoto,Y. Yamanoi,C. Yanagisawa,N. Yershov,H. Yokoyama,Masashi Yokoyama,J. Yoo,Minoru Yoshida,J. Zalipska +220 more
TL;DR: In this article, measurements of {nu}{sub {mu}} disappearance in K2K, the KEK to Kamioka long-baseline neutrino oscillation experiment are presented.
Journal ArticleDOI
Evidence for an Oscillatory Signature in Atmospheric Neutrino Oscillations
Y. Ashie,J. Hosaka,K. Ishihara,Yoshitaka Itow,J. Kameda,Yusuke Koshio,A. Minamino,C. Mitsuda,M. Miura,Shigetaka Moriyama,Masayuki Nakahata,Toshio Namba,R. Nambu,Y. Obayashi,Masato Shiozawa,Yasunari Suzuki,Y. Takeuchi,K. Taki,Shinya Yamada,Masaki Ishitsuka,Takaaki Kajita,K. Kaneyuki,Shoei Nakayama,A. Okada,Ko Okumura,T. Ooyabu,C. Saji,Y. Takenaga,Shantanu Desai,E. Kearns,S. Likhoded,J. L. Stone,L. R. Sulak,C. W. Walter,W. Wang,M. Goldhaber,David William Casper,J. P. Cravens,W. Gajewski,W. R. Kropp,D. W. Liu,S. Mine,Michael B. Smy,H. W. Sobel,C. W. Sterner,Mark R. Vagins,K. S. Ganezer,John Hill,W. E. Keig,J. S. Jang,J. Y. Kim,I. T. Lim,R. W. Ellsworth,S. Tasaka,G. Guillian,A. Kibayashi,John G. Learned,S. Matsuno,D. Takemori,M. D. Messier,Y. Hayato,A. K. Ichikawa,T. Ishida,T. Ishii,T. Iwashita,T. Kobayashi,Tomoyuki Maruyama,K. Nakamura,K. Nitta,Yuichi Oyama,Makoto Sakuda,Y. Totsuka,Atsumu Suzuki,Masaya Hasegawa,K. Hayashi,T. Inagaki,I. Kato,H. Maesaka,Taichi Morita,Tsuyoshi Nakaya,K. Nishikawa,T. Sasaki,S. Ueda,Shoji Yamamoto,Todd Haines,Todd Haines,S. Dazeley,S. Hatakeyama,R. Svoboda,E. Blaufuss,J. A. Goodman,G. W. Sullivan,D. Turcan,Kate Scholberg,Alec Habig,Y. Fukuda,C. K. Jung,T. Kato,Katsuhiro Kobayashi,Magdalena Malek,C. Mauger,C. McGrew,A. Sarrat,E. Sharkey,C. Yanagisawa,T. Toshito,Kazumasa Miyano,N. Tamura,J. Ishii,Y. Kuno,Y. Nagashima,M. Takita,Minoru Yoshida,S. B. Kim,J. Yoo,H. Okazawa,T. Ishizuka,Y. Choi,H. Seo,Y. Gando,Takehisa Hasegawa,Kunio Inoue,J. Shirai,A. Suzuki,Masatoshi Koshiba,Y. Nakajima,Kyoshi Nishijima,T. Harada,Hirokazu Ishino,R. Nishimura,Y. Watanabe,D. Kielczewska,D. Kielczewska,J. Zalipska,H. G. Berns,R. Gran,K. K. Shiraishi,A. L. Stachyra,K. Washburn,R. J. Wilkes +139 more
TL;DR: A dip in the L/E distribution was observed in the data, as predicted from the sinusoidal flavor transition probability of neutrino oscillation, which constrained nu(micro)<-->nu(tau) neutrinos oscillation parameters.
Posted Content
Letter of Intent: The Hyper-Kamiokande Experiment --- Detector Design and Physics Potential ---
K. Abe,T. Abe,Hiroaki Aihara,Y. Fukuda,Y. Hayato,K. Huang,A. K. Ichikawa,M. Ikeda,Kunio Inoue,Hirokazu Ishino,Yoshitaka Itow,T. Kajita,J. Kameda,Yasuhiro Kishimoto,M. Koga,Yusuke Koshio,K. P. Lee,A. Minamino,M. Miura,S. Moriyama,Masayuki Nakahata,K. Nakamura,Tsuyoshi Nakaya,Shoei Nakayama,K. Nishijima,Y. Nishimura,Y. Obayashi,Ko Okumura,Makoto Sakuda,Hiroyuki Sekiya,Masato Shiozawa,A. Suzuki,Yasunari Suzuki,Atsushi Takeda,Y. Takeuchi,Hiroyuki Tanaka,Shigeki Tasaka,T. Tomura,M. R. Vagins,J. Wang,Masashi Yokoyama +40 more
TL;DR: The Hyper-Kamiokande (Hyper-K) detector was proposed in this paper as a next generation underground water Cherenkov detector for neutrino oscillation experiments.