M. Shirakata
University of Tsukuba
15 Papers
69 Citations
M. Shirakata is an academic researcher from University of Tsukuba. The author has contributed to research in topics: Annihilation & Quantum chromodynamics. The author has an hindex of 7, co-authored 15 publications.
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Papers
Determination of the QCD scale parameter ΛMS with QCD cascade on the basis of the next-to-leading logarithmic approximation
Koji Abe,K. Amako,Y. Arai,Y. Asano,Masami Chiba,Y. Chiba,Motomasa Daigo,Tsuneo Emura,Mineo Fukawa,Toru Fukui,Yasutaka Fukushima,J. Haba,D. Haidt,I. Hayashibara,Yasuo Hemmi,Masato Higuchi,Tachishige Hirose,Yoshifumi Hojo,Yasuhiro Homma,Y. Hoshi,Y. Ikegami,Nobuhiro Ishihara,T. Kamitani,Nobuyuki Kanematsu,Junichi Kanzaki,Ryusaburo Kikuchi,T. Kondo,T. Koseki,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,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 +81 more
TL;DR: In this article, the relative production ratio of 3-jet events to the total number of hadronic events was studied in e+e− annihilations at center-of-mass energies between 54 and 61.4 GeV.
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Experimental study of color degree of freedom of gluons in e+e- annihilation at s around 60 GeV
Koji Abe,K. Amako,Y. Arai,Y. Asano,Masami Chiba,Y. Chiba,Motomasa Daigo,Tsuneo Emura,Mineo Fukawa,Toru Fukui,Yasutaka Fukushima,J. Haba,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. T. Korhonen,T. Koseki,Hisaya Kurashige,T. Matsui,M. Minami,Kozo Miyake,Shigeki Mori,Y. Nagashima,T. Nakamura,Itsuo Nakano,Y. Narita,Shigeru Odaka,K. Ogawa,Taro Ohama,T. Ohsugi,A. Okamoto,A. Ono,T. Oyama,Hiroshi Sakamoto,Makoto Sakuda,N. Sasao,M. Sato,M. Shioden,J. Shirai,M. Shirakata,S. Sugimoto,T. Sumiyoshi,Alfredo T. Suzuki,Yoshishige Suzuki,Y. Takada,Fumihiko Takasaki,A. Taketani,M. Takita,N. Tamura,R. Tanaka,N. Terunuma,K. Tobimatsu,Toru Tsuboyama,S. Uehara,Yoshinobu Unno,Michiaki Utsumi,M. Wakai,Tadashi Watanabe,Yoshiyuki Watase,F. Yabuki,Y. Yamada,T. Yamagata,Yasushige Yonezawa,H. Yoshida +73 more
TL;DR: Four-jet angular distributions are studied using data collected with the VENUS detector at the KEK and 95%-confidence experimental bounds on the fundamental parameters of the SU({ital N}{sub {ital c}}) local color symmetry are obtained.
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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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A study of charged D* production in e+ e- annihilation at an average center-of-mass energy of 58 GeV
Fujio Hinode,Koji Abe,K. Amako,Y. Arai,Tatsumi Arima,Y. Asano,Masami Chiba,Y. Chiba,Motomasa Daigo,Mineo Fukawa,Yasutaka Fukushima,J. Haba,Yasuo Hemmi,Masato Higuchi,Tachishige Hirose,Yasuhiro Homma,Y. Hoshi,N. Hosoda,Nobuhiro Ishihara,N. Kanda,E. Kanatani,Nobuyuki Kanematsu,Junichi Kanzaki,Ryusaburo Kikuchi,T. T. Korhonen,T. Kondo,A. E. Krüger,Hisaya Kurashige,J. MacNaughton,T. Matsui,M. Miura,Kozo Miyake,Shigeki Mori,Y. Nagashima,Teruo Nakamura,I. Nakano,Shigeru Odaka,T. Ogawa,Taro Ohama,T. Ohsugi,A. Okamoto,A. Ono,T. Oyama,H. Ohyama,Hiroshi Sakamoto,Makoto Sakuda,M. Sato,Nobuaki Sato,M. Shioden,J. Shirai,M. Shirakata,T. Sumiyoshi,A. Suzuki,Y. Takada,H. Takaki,Fumihiko Takasaki,M. Takita,N. Tamura,K. Tobimatsu,Toru Tsuboyama,S. Uehara,Yoshinobu Unno,M. Utsumi,Yoshiyuki Watase,F. Yabuki,Y. Yamada,T. Yamagata,Yasushige Yonezawa,H. Yoshida +68 more
TL;DR: In this paper, the authors studied the production of charged D ∗ mesons in e + e − annihilation at an average center-of-mass energy of 58.0 GeV.
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Measurement of forward-backward charge asymmetry in the process of b-quark production in e+e− annihilation around √s=60 GeV
M. Shirakata,M. Utsumi,Koji Abe,K. Amako,Y. Arai,Y. Asano,Masami Chiba,Y. Chiba,Motomasa Daigo,Mineo Fukawa,Toru Fukui,Yasutaka Fukushima,J. Haba,Yasuo Hemmi,Masato Higuchi,Fujio Hinode,Tachishige Hirose,Yasuhiro Homma,Y. Hoshi,Nobuhiro Ishihara,N. Kanda,Nobuyuki Kanematsu,Junichi Kanzaki,Ryusaburo Kikuchi,T. T. Korhonen,T. Kondo,T. Koseki,Hisaya Kurashige,J. MacNaughton,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,T. Oyama,Hiroshi Sakamoto,Makoto Sakuda,N. Sasao,M. Sato,H. Shibuya,M. Shioden,J. Shirai,S. Sugimoto,T. Sumiyoshi,A. Suzuki,Y. Takada,H. Takaki,Fumihiko Takasaki,A. Taketani,M. Takita,N. Tamura,N. Terunuma,K. Tobimatsu,Toru Tsuboyama,S. Uehara,Yoshinobu Unno,T. Watanabe,Yoshiyuki Watase,F. Yabuki,Y. Yamada,Yasushige Yonezawa,H. Yoshida +70 more
TL;DR: In this article, the forward-backward charge asymmetry in the process of b-quark production in e + e − annihilation at TRISTAN was measured by detecting prompt leptons from bquarks.
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