T
T. Ishizuka
Researcher at Saitama University
Publications - 31
Citations - 596
T. Ishizuka is an academic researcher from Saitama University. The author has contributed to research in topics: Annihilation & Electron–positron annihilation. The author has an hindex of 15, co-authored 31 publications receiving 589 citations.
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Journal ArticleDOI
Multihadron-event properties in e+e- annihilation at s=52-57 GeV
Y. K. Li,J. Li,C. P. Cheng,P. Gu,M. H. Ye,Y. C. Zhu,R. L. Imlay,P. N. Kirk,J. Lim,R. R. McNeil,W. Metcalf,S. S. Myung,A. Abashian,K. Gotow,K. P. Hu,E. H. Low,M. E. Mattson,L. E. Piilonen,K. L. Sterner,S. Lusin,C. Rosenfeld,A. T.M. Wang,S. Wilson,M. Frautschi,H. Kagan,R. D. Kass,C. G. Trahern,Richard Breedon,G. N. Kim,Winston Ko,R. L. Lander,Kaori Maeshima,R. L. Malchow,J. R. Smith,David Stuart,Kazuo Abe,Y. Fujii,Yusuke Higashi,S. K. Kim,Yoshimasa Kurihara,A. Maki,T. Nozaki,Tsunehiko Omori,Hiroyuki Sagawa,Y. Sakai,Yasuhiro Sugimoto,Y. Takaiwa,Susumu Terada,R. C. Walker,F. Kajino,D. Perticone,R. Poling,T. Thomas,Y. Ishi,Kazumasa Miyano,H. Miyata,Takashi Sasaki,Y. Yamashita,A. Bacala,A. Bacala,J. Liu,I. H. Park,F. Sannes,Steve Schnetzer,Robert Stone,J. Vinson,P. Auchincloss,D. Blanis,A. Bodek,H. S. Budd,Sarah Catherine Eno,C. A. Fry,H. Harada,Y. H. Ho,Yongsun Kim,T. Kumita,T. Mori,S. L. Olsen,S. L. Olsen,N. M. Shaw,A. Sill,E. H. Thorndike,K. Ueno,H. W. Zheng,S. Kobayashi,A. Murakami,J. S. Kang,Hyunyong Kim,M. H. Lee,D. H. Han,E. J. Kim,Dong-Chul Son,T. Kojima,S. Matsumoto,R. Tanaka,Y. Yamagishi,T. Yasuda,T. Ishizuka,K. Ohta +98 more
TL;DR: These measurements are compared with QCD+fragmentation models that use either leading-logarithmic parton-shower evolution or QCD matrix elements at the parton level, and either string or cluster fragmentation for hadronization.
Journal ArticleDOI
Experimental evidence for the non-Abelian nature of QCD from a study of multijet events produced in e+e- annihilation.
I. H. Park,Steve Schnetzer,James C. Green,S. Sakamoto,F. Sannes,Robert Stone,S. Trentalange,J. Vinson,A. Bacala,R. L. Imlay,P. N. Kirk,J. Lim,R. R. McNeil,W. Metcalf,C. P. Cheng,J. Li,Y. K. Li,Z. P. Mao,Y. T. Xu,Y. C. Zhu,A. Abashian,K. Gotow,E. H. Low,M. E. Mattson,F. Naito,L. E. Piilonen,K. L. Sterner,S. Lusin,C. Rosenfeld,A. T.M. Wang,S. Wilson,M. Frautschi,H. Kagan,R. D. Kass,C. G. Trahern,Winston Ko,R. L. Lander,Kaori Maeshima,R. L. Malchow,J. R. Smith,K. Sparks,M. C.S. Williams,Kazuo Abe,Y. Fujii,Yusuke Higashi,S. K. Kim,Yoshimasa Kurihara,A. Maki,T. Nozaki,Tsunehiko Omori,Hiroyuki Sagawa,Y. Sakai,Yasuhiro Sugimoto,Y. Takaiwa,Susumu Terada,Kiyosumi Tsuchiya,F. Kajino,D. Perticone,R. Poling,T. L.T. Thomas,Y. Ishi,Kazumasa Miyano,H. Miyata,Y. Yamashita,D. Blanis,A. Bodek,H. S. Budd,R. Coombes,Sarah Catherine Eno,C. A. Fry,H. Harada,Y. H. Ho,Yongsun Kim,T. Kumita,T. Mori,S. L. Olsen,P. Perez,Alan Sill,N. M. Shaw,E. H. Thorndike,K. Ueno,H. W. Zheng,K. Eguchi,H. Itoh,H. Ichinose,S. Kobayashi,A. Murakami,K. Toyoshima,J. S. Kang,Hyunyong Kim,M. H. Lee,S. S. Myung,G. N. Kim,E. J. Kim,Dong-Chul Son,H. Kozuka,S. Matsumoto,Takashi Sasaki,T. Takeda,Ryuki Tanaka,R. Chiba,S. Igarashi,Hideo Yokota,T. Ishizuka,K. Ohta +104 more
TL;DR: Measurements of the angular distributions of four-jet events show evidence for the triple-gluon vertex and a comparison of the three-jet event fraction at TRISTAN to the fraction of the DESY storage ring PETRA shows that the QCD coupling strength decreases with increasing QCD strength.
Journal ArticleDOI
Measurements of R and a search for heavy-quark production in e+e- annihilation at sqrt s =50 and 52 GeV.
Hiroyuki Sagawa,T. Mori,Kazuo Abe,S. Chakrabarti,Y. Fujii,Yusuke Higashi,S. Ishimoto,Yoshimasa Kurihara,A. Maki,P. Mani,T. Nozaki,Tsunehiko Omori,P. Perez,Y. Sakai,Y. Sugimoto,Y. Takaiwa,Susumu Terada,Kiyosumi Tsuchiya,A. Bacala,R. Imlay,P. N. Kirk,W. Marterer,Rr Mcneil,W. Metcalf,C. P. Cheng,Z. P. Mao,Y. Yan,Y. T. Xu,H. S. Zhou,Y. C. Zhu,A. Abashian,K. Gotow,F. Kajino,F. Naito,F. T. Avignone,R. Childers,C. Darden,J. Edwards,S. Lusin,C. Rosenfeld,S. Wilson,D. R. Johnson,M. Frautschi,H. Kagan,R. D. Kass,C. G. Trahern,Hoyun Lee,Winston Ko,R. L. Lander,Kaori Maeshima,R. L. Malchow,D. Saroff,K. Sparks,M. C.S. Williams,A. Aldritch,James C. Green,I. H. Park,S. Sakamoto,F. Sannes,Steve Schnetzer,Robert Stone,S. Trentalange,D. Zimmerman,K. Miyano,H. Miyata,M. Ogawa,Y. Yamashita,D. Blanis,A. Bodek,H. S. Budd,R. Coombes,Sarah Catherine Eno,C. A. Fry,H. Harada,Y. H. Ho,Yongsun Kim,T. Kumita,S. L. Olsen,Ron Poling,N. M. Shaw,A. Sill,E. H. Thorndike,K. Ueno,H. W. Zheng,H. Asakura,K. Eguchi,H. Itoh,S. Kobayashi,A. Murakami,K. Toyoshima,J. S. Kang,Hyunyong Kim,S. K. Kim,S. S. Myung,E. J. Kim,G. N. Kim,Dong-Chul Son,H. Kozuka,S. Matsumoto,H. Otsuki,T. Sasaki,T. Takeda,R. Tanaka,R. Chiba,K. Hanaoka,S. Igarashi,M. Miyashita,H. Murata,H. Yokota,Y. Ishi,T. Ishizuka,T. Maruta,K. Ohta +112 more
TL;DR: A 95%-confidence-level upper limit is deduced for the production rate of new heavy charge +(2/3e or -(1/ 3e quarks to be 0.19 units of R) for hadronic final states.
Journal ArticleDOI
Evidence for hard scattering of hadronic constituents of photons in photon-photon collisions of TRISTAN
R. Tanaka,T. Kojima,Takashi Sasaki,K. Tomioka,S. Matsumoto,Y. Oshi,Kazumasa Miyano,H. Miyata,P. N. Kirk,J. Lim,Rr Mcneil,S. S. Myung,C. P. Cheng,W. X. Gao,P. Gu,W. G. Yan,M. H. Ye,A. Abashian,K. Gotow,K. P. Hu,A. Z. Lai,E. H. Low,M. E. Mattson,L. E. Piilonen,K. L. Sterner,S. Lusin,C. Rosenfeld,A. T.M. Wang,S. Wilson,M. Frautschi,H. Kagan,R. D. Kass,C. A. Fry,Richard Breedon,Winston Ko,R. L. Lander,Kaori Maeshima,R. L. Malchow,J. Rowe,J. R. Smith,David Stuart,Kazuo Abe,Y. Fujii,Yusuke Higashi,Yoshimasa Kurihara,A. Maki,T. Nozaki,Tsunehiko Omori,Hiroyuki Sagawa,Y. Sakai,Yasuhiro Sugimoto,Y. Takaiwa,Susumu Terada,R. C. Walker,D. Blanis,A. Bodek,S. Kanda,B. J. Kim,Yongsun Kim,T. Kumita,Y. K. Li,S. L. Olsen,A. Sill,K. Ueno,C. Velisarris,F. Kajino,R. Poling,T. Thomas,Y. Yamashita,A. Bacala,A. Bacala,Sun Kee Kim,F. Sannes,Steve Schnetzer,Robert Stone,J. Vinson,E. Araki,S. Kobayashi,A. Murakami,H. Yoshinaka,J. S. Kang,Moo Hyun Lee,S. K. Choi,Dong-Chul Son,T. Ishizuka +84 more
TL;DR: In this article, an experimental study of e+e−+ hadrons in the kinematic regime for which the process is interpreted as hadron production in collisions of almost real photons is presented.
Journal ArticleDOI
Charged-particle multiplicities in e+e- annihilations at s=50-61.4 GeV
H. W. Zheng,P. Perez,P. Auchincloss,D. Blanis,A. Bodek,H. S. Budd,Sarah Catherine Eno,C. A. Fry,H. Harada,Y. H. Ho,Yongsun Kim,T. Kumita,T. Mori,S. L. Olsen,S. L. Olsen,N. M. Shaw,A. Sill,E. H. Thorndike,K. Ueno,R. L. Imlay,P. N. Kirk,J. Lim,R. R. McNeil,W. Metcalf,S. S. Myung,C. P. Cheng,P. Gu,J. Li,Y. K. Li,M. H. Ye,Y. C. Zhu,A. Abashian,K. Gotow,K. P. Hu,E. H. Low,M. E. Mattson,L. E. Piilonen,K. L. Sterner,S. Lusin,C. Rosenfeld,A. T.M. Wang,S. Wilson,M. Frautschi,H. Kagan,R. D. Kass,C. G. Trahern,Richard Breedon,G. N. Kim,Winston Ko,R. L. Lander,Kaori Maeshima,R. L. Malchow,J. R. Smith,David Stuart,Kazuo Abe,Y. Fujii,Yusuke Higashi,S. K. Kim,Yoshimasa Kurihara,A. Maki,T. Nozaki,Tsunehiko Omori,Hiroyuki Sagawa,Y. Sakai,Yasuhiro Sugimoto,Y. Takaiwa,Susumu Terada,R. C. Walker,F. Kajino,D. Perticone,Ron Poling,T. Thomas,Y. Ishi,Kazumasa Miyano,H. Miyata,Takashi Sasaki,Y. Yamashita,A. Bacala,A. Bacala,J. Liu,I. H. Park,F. Sannes,Steve Schnetzer,Robert Stone,J. Vinson,S. Kobayashi,A. Murakami,J. S. Kang,Hyunyong Kim,M. H. Lee,D. H. Han,E. J. Kim,Dong-Chul Son,T. Kojima,S. Matsumoto,R. Tanaka,Y. Yamagishi,T. Yasuda,T. Ishizuka,K. Ohta +99 more
TL;DR: In this article, the authors presented the charged-particle multiplicity distributions for {ital e}{sup +}{ital e}sup {minus} annihilation at center-of-mass energies from 50 to 61.4 GeV.