S
S. Kato
Researcher at University of Tokyo
Publications - 89
Citations - 1112
S. Kato is an academic researcher from University of Tokyo. The author has contributed to research in topics: Annihilation & Photon. The author has an hindex of 17, co-authored 89 publications receiving 1089 citations. Previous affiliations of S. Kato include Tokyo Institute of Technology & Yamagata University.
Papers
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Journal ArticleDOI
New upper bound on the electron anti-neutrino mass☆
Hirokane Kawakami,S. Kato,T. Ohshima,S. Shibata,Kumataro Ukai,Naotake Morikawa,Norio Nogawa,K. Haga,T. Nagafuchi,M. Shigeta,Yasutaka Fukushima,T. Taniguchi +11 more
TL;DR: In this paper, an upper bound ofmv < 13 eV at 95% CL has been obtained on the electron anti-neutrino mass, which is based on a more than tenfold improvement in data relative to previous measurements of the β-spectrum in 3H decay.
Journal ArticleDOI
Measurement of the electromagnetic coupling at large momentum transfer
I. Levine,D.S. Koltick,B. Howell,E. I. Shibata,Junpei Fujimoto,Toshiaki Tauchi,Kazuo Abe,Tomohiro Abe,I. Adachi,K. Adachi,Masato Aoki,K. Emi,Ryoji Enomoto,H. Fujii,Keisuke Fujii,Toshitsugu Fujii,N. Fujiwara,H. Hayashii,H. Hirano,Hirokazu Ikeda,Y. Inoue,S. Itami,R. Itoh,Hiroyuki Iwasaki,M. Iwasaki,R. Kajikawa,K. Kaneyuki,S. Kato,S. Kawabata,H. Kichimi,Masakazu Kobayashi,H. Mamada,K. Miyabayashi,Akiya Miyamoto,Koichi Nagai,K. Nakabayashi,M. Nakamura,E. Nakano,O. Nitoh,S. Noguchi,A. Ochi,F. Ochiai,N. Ohishi,Yukiyoshi Ohnishi,Yasuhiro Ohshima,Hideki Okuno,T. Okusawa,A. Sugiyama,Shiro Suzuki,Kasuke Takahashi,T. Takahashi,Toru Tanimori,Y. Teramoto,Makoto Tomoto,T. Tsukamoto,T. Tsumura,S. Uno,K. Watanabe,Y. X. Watanabe,Akira Yamamoto,M. Yamauchi +60 more
TL;DR: In this article, the first purely electroweak measurement of the strengthening of the electromagnetic coupling was reported by comparing the process e{sup +}e{sup -r_arrow} with increasing momentum transfer Q{sup 2.
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Measurement of inclusive particle spectra and test of MLLA prediction in e+e− annihilation at s=58Gev
R. Itoh,M. Yamauchi,A. Yamaguchi,K. Abe,Tomohiro Abe,Iki Adachi,K. Adachi,Masato Aoki,S. Awa,K. Emi,Ryoji Enomoto,H. Fujii,Keisuke Fujii,T. Fujii,J. Fujimoto,K. Fujita,N. Fujiwara,H. Hayashii,B. Howell,N. Iida,Y. Inoue,Hiroyuki Iwasaki,M. Iwasaki,K. Kaneyuki,R. Kajikawa,S. Kato,S. Kawabata,H. Kichimi,Masakazu Kobayashi,D.S. Koltick,I. Levine,S. Minami,K. Miyabayashi,A. Miyamoto,K. Muramatsu,Koichi Nagai,K. Nakabayashi,E. Nakano,O. Nitoh,S. Noguchi,A. Ochi,F. Ochiai,N. Ohishi,Y. Ohnishi,Yasuhiro Ohshima,Hideki Okuno,T. Okusawa,T. Shinohara,A. Sugiyama,Shiro Suzuki,K. Takahashi,T. Takahashi,Toru Tanimori,Toshiaki Tauchi,Y. Teramoto,N. Toomi,T. Tsukamoto,O. Tsumura,S. Uno,Tsuyoshi Watanabe,Y. Watanabe,Akira Yamamoto +61 more
TL;DR: In this article, the authors compared the MLLA model with a modified leading log approximation (MLLA) model to measure the energy dependence of the peak positions of the spectra.
Journal ArticleDOI
Photoproduction of charged π mesons from protons and neutrons in the energy range between 250 and 790 MeV
T. Fujii,T. Kondo,F. Takasaki,Shoichi Yamada,S. Homma,K. Huke,S. Kato,Hideki Okuno,Ichita Endo,H. Fujii +9 more
TL;DR: In this paper, a magnetic spectrometer with three layers of scintillation hodoscope was used to detect charged π mesons and the differential cross sections for γp→π+n from hydrogen and the π − π + ratios from deuterium were measured at nine c.m. angles between 30° and 150° for laboratory photon energies between 260 and 800 MeV.
Journal ArticleDOI
Measurement of the inclusive cross section of jets in γγ interactions at TRISTAN
H. Hayashii,A. Miyamoto,M. Iwasaki,S. Noguchi,N. Fujiwara,T. Abe,K. Abe,I. Adachi,M. Aoki,S. Awa,R. Belusevic,K. Emi,Ryoji Enomoto,H. Fujii,Keisuke Fujii,T. Fujii,J. Fujimoto,K. Fujita,B. Howell,N. Iida,Hirokazu Ikeda,R. Itoh,Hiroyuki Iwasaki,R. Kajikawa,S. Kato,S. Kawabata,H. Kichimi,Masakazu Kobayashi,D.S. Koltick,I. Levine,K. Miyabayashi,K. Muramatsu,Koichi Nagai,T. Nagira,E. Nakano,K. Nakabayashi,Osamu Nitoh,F. Ochiai,Y. Ohnishi,Hideki Okuno,T. Okusawa,K. Shimozawa,T. Shinohara,A. Sugiyama,N. Sugiyama,Shiro Suzuki,K. Takahashi,T. Takahashi,M. Takemoto,Toru Tanimori,T. Tauchi,F. Teramae,Y. Teramoto,N. Toomi,T. Toyama,T. Tsukamoto,S. Uno,Y. Watanabe,A. Yamaguchi,A. Yamamoto,M. Yamauchi +60 more
TL;DR: In this article, the authors investigated the properties of jet production in almost real γγ collisions at √s=58 GeV with the TOPAZ detector at the TRISTAN e+e− collider.