K. Kubo
Kyoto University
12 Papers
42 Citations
K. Kubo is an academic researcher from Kyoto University. The author has contributed to research in topics: Annihilation & Lepton. The author has an hindex of 7, co-authored 12 publications.
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Papers
Search for new charged leptons decaying into massive neutrinos and new stable charged leptons in e+e- collisions.
Koji Abe,K. Amako,Y. Arai,Y. Asano,Masami Chiba,Y. Chiba,Motomasa Daigo,Tsuneo Emura,Ichita Endo,Mineo Fukawa,Toru Fukui,Yasutaka Fukushima,J. Haba,D. Haidt,I. Hayashibara,Yasuo Hemmi,Masato Higuchi,Tachishige Hirose,Y. Hojyo,Yasuhiro Homma,Y. Hoshi,Y. Ikegami,Nobuhiro Ishihara,T. Kamitani,Nobuyuki Kanematsu,Junichi Kanzaki,Ryusaburo Kikuchi,T. Kondo,T. Koseki,K. Kubo,Hisaya Kurashige,T. Matsui,M. Minami,Kozo Miyake,Shigeki Mori,Y. Nagashima,Teruo Nakamura,I. Nakano,Shigeru Odaka,K. Ogawa,Taro Ohama,T. Ohsugi,A. Ono,H. Osabe,H. Saito,H. Sakae,Hiroshi Sakamoto,S. Sakamoto,M. Sakano,Makoto Sakuda,Noboru Sasao,M. Sato,M. Shioden,J. Shirai,F. Suekane,S. Sugimoto,T. Sumiyoshi,Yoshishige Suzuki,Y. Takada,Fumihiko Takasaki,A. Taketani,N. Tamura,R. Tanaka,Keijiro Tobimatsu,Toru Tsuboyama,A. Tsukamoto,S. Uehara,Y. Unno,M. Wakai,T. Watanabe,Yoshiyuki Watase,Y. Yamada,T. Yamagata,T. Yamashita,H. Yoshida +74 more
TL;DR: A new mass limit on the charged heavy leptons was obtained as a function of the mass of the associated neutrinos as well as the integrated luminosity of 5.3 pb/sup -1/.
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Experimental limits on extra-Z bosons from e+e− annihilation data with the VENUS detector at s=50–64 GeV
Koji Abe,K. Amako,Y. Arai,Y. Asano,Masami Chiba,Y. Chiba,Motomasa Daigo,Tsuneo Emura,Ichita Endo,Mineo Fukawa,Toru Fukui,Yasutaka Fukushima,J. Haba,I. Hayashibara,Yasuo Hemmi,Masato Higuchi,Tachishige Hirose,Y. Hojyo,Yasuhiro Homma,Y. Hoshi,Y. Ikegami,Nobuhiro Ishihara,T. Kamitani,Nobuyuki Kanematsu,Junichi Kanzaki,Ryusaburo Kikuchi,T. Kondo,T. Koseki,K. Kubo,Hisaya Kurashige,T. Matsui,M. Minami,Kozo Miyake,Shigeki Mori,Y. Nagashima,Teruo Nakamura,I. Nakano,Y. Narita,Shigeru Odaka,K. Ogawa,Taro Ohama,T. Ohsugi,A. Okamoto,A. Ono,H. Osabe,T. Oyama,H. Saito,H. Sakae,Hiroshi Sakamoto,S. Sakamoto,M. Sakano,Makoto Sakuda,N. Sasao,M. Sato,M. Shioden,J. Shirai,M. Shirakata,F. Suekane,S. Sugimoto,T. Sumiyoshi,A. Suzuki,Yoshishige Suzuki,Y. Takada,Fumihiko Takasaki,A. Taketani,M. Takita,N. Tamura,R. Tanaka,N. Terunuma,K. Tobimatsu,Toru Tsuboyama,A. Tsukamoto,S. Uehara,Yoshinobu Unno,M. Utsumi,M. Wakai,T. Watanabe,Yoshiyuki Watase,F. Yabuki,Y. Yamada,T. Yamagata,T. Yamashita,Yasushige Yonezawa,H. Yoshida +83 more
TL;DR: In this article, the authors obtained 90% confidence-level lower limits of 105, 125 and 231 GeV for the masses of ZΨ, Zη and Zχ bosons which are expected from the E6 grand unified theory.
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Charge asymmetry of hadron jets and limits on the compositeness scales in the e+e-→qq̄ reaction at 〈√s〉 = 57.6 GeV
Koji Abe,K. Amako,Y. Arai,Y. Asano,Masami Chiba,Y. Chiba,Motomasa Daigo,Tsuneo Emura,Ichita Endo,Mineo Fukawa,Toru Fukui,Yasutaka Fukushima,J. Haba,D. Haidt,I. Hayashibara,Yasuo Hemmi,Masato Higuchi,Tachishige Hirose,Y. Hojyo,Yasuhiro Homma,Y. Hoshi,Y. Ikegami,Nobuhiro Ishihara,T. Kamitani,Nobuyuki Kanematsu,Junichi Kanzaki,Ryusaburo Kikuchi,T. Kondo,T. Koseki,K. Kubo,Hisaya Kurashige,T. Matsui,M. Minami,Kozo Miyake,Shigeki Mori,Y. Nagashima,Teruo Nakamura,I. Nakano,Y. Narita,Shigeru Odaka,K. Ogawa,Taro Ohama,T. Ohsugi,A. Okamoto,A. Ono,H. Osabe,T. Oyama,H. Saito,H. Sakae,Hiroshi Sakamoto,S. Sakamoto,M. Sakano,Makoto Sakuda,N. Sasao,M. Sato,M. Shioden,J. Shirai,S. Shirakata,F. Suekane,S. Sugimoto,T. Sumiyoshi,S. Suzuki,Yoshishige Suzuki,Y. Takada,Fumihiko Takasaki,A. Taketani,M. Takita,N. Tamura,R. Tanaka,N. Terunuma,K. Tobimatsu,Toru Tsuboyama,A. Tsukamoto,S. Uehara,Yoshinobu Unno,M. Utsumi,M. Wakai,T. Watanabe,Yoshiyuki Watase,F. Yabuki,Y. Yamada,T. Yamagata,T. Yamashita,Yasushige Yonezawa,H. Yoshida +84 more
TL;DR: In this article, a charge asymmetry has been measured in hadron jets from e + e − annihilation at energies between 52 and 614 geV (√ s 〉=576 GeV) and is consistent with the prediction of the standard model of the electroweak theory.
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Measurement of the reactions e+e-→μ+μ- and e+e-→τ+τ- between {Mathematical expression} and 60.8 GeV
Koji Abe,K. Amako,Y. Arai,Y. Asano,Masami Chiba,Y. Chiba,Motomasa Daigo,Tsuneo Emura,Ichita Endo,Mineo Fukawa,Toru Fukui,Yasutaka Fukushima,J. Haba,D. Haidt,I. Hayashibara,Yasuo Hemmi,Masato Higuchi,Tachishige Hirose,Y. Hojyo,Yasuhiro Homma,Y. Hoshi,Y. Ikegami,Nobuhiro Ishihara,T. Kamitani,Nobuyuki Kanematsu,Junichi Kanzaki,Ryusaburo Kikuchi,T. Kondo,T. Koseki,K. Kubo,Hisaya Kurashige,T. Matsui,M. Minami,Kozo Miyake,Shigeki Mori,Y. Nagashima,T. Nakamura,I. Nakano,Y. Narita,Shigeru Odaka,K. Ogawa,Taro Ohama,T. Ohsugi,A. Okamoto,A. Ono,H. Osabe,T. Oyama,H. Saito,H. Sakae,Hiroshi Sakamoto,S. Sakamoto,M. Sakano,Makoto Sakuda,N. Sasao,M. Sato,M. Shioden,J. Shirai,F. Suekane,S. Sugimoto,T. Sumiyoshi,Yoshishige Suzuki,Y. Takada,Fumihiko Takasaki,A. Taketani,N. Tamura,R. Tanaka,N. Terunuma,K. Tobimatsu,Toru Tsuboyama,A. Tsukamoto,S. Uehara,Yoshinobu Unno,M. Utsumi,M. Wakai,T. Watanabe,Yoshiyuki Watase,Y. Yamada,T. Yamagata,T. Yamashita,Yasushige Yonezawa,H. Yoshida +80 more
TL;DR: The angular distribution of the reactione+e−→μ+μ− and e+e+→τ+τ− have been measured between\(\sqrt s = 50\) and 60.8 GeV with the VENUS detector at TRISTAN as mentioned in this paper.
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A search for excited electrons in the e+e− reactions up to the √s of 56 GeV
Koji Abe,K. Amako,Y. Arai,Y. Asano,Masami Chiba,Y. Chiba,Motomasa Daigo,Tsuneo Emura,Ichita Endo,Mineo Fukawa,Toru Fukui,Yasutaka Fukushima,J. Haba,D. Haidt,I. Hayashibara,Yasuo Hemmi,Masato Higuchi,Tachishige Hirose,Y. Hojyo,Yasuhiro Homma,Y. Hoshi,Y. Ikegami,Nobuhiro Ishihara,T. Kamitani,Nobuyuki Kanematsu,Junichi Kanzaki,Ryusaburo Kikuchi,T. Kondo,T. Koseki,K. Kubo,Hisaya Kurashige,T. Matsui,M. Minami,Kozo Miyake,Shigeki Mori,Y. Nagashima,Teruo Nakamura,I. Nakano,Shigeru Odaka,K. Ogawa,Taro Ohama,T. Ohsugi,A. Ono,H. Osabe,H. Saito,H. Sakae,Hiroshi Sakamoto,S. Sakamoto,M. Sakano,Makoto Sakuda,N. Sasao,M. Sato,M. Shioden,J. Shirai,F. Suekane,S. Sugimoto,T. Sumiyoshi,Yoshishige Suzuki,Y. Takada,Fumihiko Takasaki,A. Taketani,N. Tamura,R. Tanaka,Keijiro Tobimatsu,Toru Tsuboyama,A. Tsukamoto,S. Uehara,Yoshinobu Unno,M. Wakai,T. Watanabe,Yoshiyuki Watase,Y. Yamada,T. Yamagata,T. Yamashita,H. Yoshida +74 more
TL;DR: In this paper, a lower limit for the mass of excited electrons, e ∗' s, has been obtained by making use of the processes e + e − →e + e− γγ and e − γ ( e ) (quasi-real Compton scattering).
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