M
Masatoshi Imori
Researcher at University of Tokyo
Publications - 43
Citations - 2283
Masatoshi Imori is an academic researcher from University of Tokyo. The author has contributed to research in topics: Cosmic ray & Spectrometer. The author has an hindex of 22, co-authored 43 publications receiving 2244 citations. Previous affiliations of Masatoshi Imori include Kobe University.
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Journal ArticleDOI
Precision measurement of cosmic-Ray antiproton spectrum
S. Orito,Tadashi Maeno,H. Matsunaga,K. Abe,Kazuaki Anraku,Yoichi Asaoka,M. Fujikawa,Masatoshi Imori,Masaya Ishino,Y. Makida,Nagataka Matsui,Hiroshi Matsumoto,John Mitchell,T. Mitsui,A. A. Moiseev,M. Motoki,Jun Nishimura,Mitsuaki Nozaki,Jonathan F. Ormes,T. Saeki,T. Sanuki,M. Sasaki,Eun-Suk Seo,Y. Shikaze,T. Sonoda,R. E. Streitmatter,Jun-ichi Suzuki,Kenichi Tanaka,Ikuo Ueda,N. Yajima,T. Yamagami,Akira Yamamoto,Tetsuya Yoshida,Koji Yoshimura +33 more
TL;DR: The peak spectrum is reproduced by theoretical calculations, implying that the propagation models are basically correct and that different cosmic-ray species undergo a universal propagation.
Journal ArticleDOI
Precise Measurement of Cosmic-Ray Proton and Helium Spectra with the BESS Spectrometer
T. Sanuki,M. Motoki,M. Motoki,Hironori Matsumoto,Eun-Suk Seo,J. Z. Wang,K. Abe,Kazuaki Anraku,Yoichi Asaoka,M. Fujikawa,Masatoshi Imori,Tadashi Maeno,Y. Makida,Nagataka Matsui,H. Matsunaga,H. Matsunaga,John Mitchell,T. Mitsui,T. Mitsui,Alexander Moiseev,J. Nishimura,Mitsuaki Nozaki,S. Orito,Jonathan F. Ormes,T. Saeki,Makoto Sasaki,Y. Shikaze,T. Sonoda,R. E. Streitmatter,Jun-ichi Suzuki,Kenichi Tanaka,Ikuo Ueda,N. Yajima,T. Yamagami,Akira Yamamoto,Tetsuya Yoshida,Koji Yoshimura +36 more
TL;DR: The magnetic rigidity of the cosmic-ray proton and helium spectra was reliably determined by highly precise measurement of the circular track in a uniform solenoidal magnetic field of 1 Tesla as discussed by the authors.
Journal ArticleDOI
Precise Measurement of Cosmic-Ray Proton and Helium Spectra with the BESS Spectrometer
T. Sanuki,M. Motoki,M. Motoki,Hironori Matsumoto,Eun-Suk Seo,J. Z. Wang,K. Abe,Kazuaki Anraku,Yoichi Asaoka,M. Fujikawa,Masatoshi Imori,Tadashi Maeno,Y. Makida,Nagataka Matsui,H. Matsunaga,H. Matsunaga,John Mitchell,T. Mitsui,T. Mitsui,Alexander Moiseev,J. Nishimura,Mitsuaki Nozaki,S. Orito,Jonathan F. Ormes,T. Saeki,Makoto Sasaki,Y. Shikaze,T. Sonoda,R. E. Streitmatter,Jun-ichi Suzuki,Kenichi Tanaka,Ikuo Ueda,N. Yajima,T. Yamagami,Akira Yamamoto,Tetsuya Yoshida,Koji Yoshimura +36 more
TL;DR: The magnetic rigidity of the cosmic ray was reliably determined by highly precise measurement of the circular track in a uniform solenoidal magnetic field of 1 T in 1998 as discussed by the authors, and the cosmic-ray proton and helium spectra were determined within overall uncertainties of ±5% for protons and ±10% for helium nuclei including statistical and systematic errors.
Journal ArticleDOI
Observation of planar three-jet events in e+e− annihilation and evidence for gluon bremsstrahlung
W. Bartel,T. Canzler,D. Cords,P. Dittmann,R. Eichler,R. Felst,D. Haidt,S. Kawabata,H. Krehbiel,B. Naroska,L. H. O'Neill,J. E. Olsson,P. Steffen,W. L. Yen,E. Elsen,M. Helm,A. Petersen,P. Warming,G. Weber,H. Drumm,J. Heintze,G. Heinzelmann,R. D. Heuer,J. von Krogh,P. Lennert,H. Matsumura,T. Nozaki,H. Rieseberg,A. Wagner,D.C. Darvill,F. Foster,Gareth Hughes,H. Wriedt,John Allison,J. Armitage,I. P. Duerdoth,J. F. Hassard,F. K. Loebinger,B. T. King,A. A. Macbeth,H. E. Mills,P. G. Murphy,Harrison Prosper,K. Stephens,D. Clarke,M. C. Goddard,R. Hedgecock,R. Marshall,G. F. Pearce,Masatoshi Imori,T. Kobayashi,Sachio Komamiya,M. Koshiba,Makoto Minowa,S. Orito,A. Sato,Takafumi Suda,H. Takeda,Y. Totsuka,Yosuke Watanabe,Shoichi Yamada,C. Yanagisawa +61 more
TL;DR: In this paper, the topological distribution of charged and neutral hadrons from the reaction e+e− → multihadrons is studied at √s of about 30 GeV, and an excess of planar events is observed at a rate which cannot be explained by statistical fluctuations in the standard two-jet process.
Journal ArticleDOI
Measurement of the Z0 mass and width with the opal detector at LEP
M. Z. Akrawy,Gideon Alexander,J. Allison,Phillip Allport,K. J. Anderson,J. C. Armitage,G.T.J. Arnison,P. Ashton,Georges Azuelos,John Baines,Austin Ball,J. Banks,Gareth J. Barker,R. J. Barlow,Jacqueline Batley,G. Bavaria,C. Beard,F. Beck,K. W. Bell,Gideon Bella,S. Bethke,Otmar Biebel,I. J. Bloodworth,P. Bock,H. Boerner,Horst Breuker,R. M. Brown,Rene Brun,A. Buijs,H. J. Burckhart,Paolo Capiluppi,R. K. Carnegie,A. A. Carter,J. R. Carter,C. Y. Chang,Dave Charlton,J. T.M. Chrin,I. Cohen,J. E. Conboy,M. Couch,M. Coupland,Marco Cuffiani,Shlomo Dado,G. M. Dallavalle,O. W. Davies,M. M. Deninno,A. Dieckmann,Michael Dittmar,M. S. Dixit,D. Duchesneau,Ehud Duchovni,I. P. Duerdoth,D. J.P. Dumas,H. El Mamouni,P. A. Elcombe,P. G. Estabrooks,Fabrizio Fabbri,P. Farthouat,H. M. Fischer,D. G. Fong,M. T. French,C. Fukunaga,B. Gandois,O. Ganel,J. W. Gary,N. I. Geddes,Cnp Gee,Christoph Geich-Gimbel,S. W. Gensler,F. X. Gentit,G. Giacomelli,W. R. Gibson,J. D. Gillies,J. Goldberg,M. J. Goodrick,W. Gorn,D. Granite,E. K. U. Gross,P. Grosse-Wiesmann,J. Grunhaus,H. Hagedorn,J. Hagemann,M. Hansroul,C. K. Hargrove,J. Hart,P. M. Hattersley,Despina Hatzifotiadou,M. Hauschild,C. M. Hawkes,E. Heflin,J. Heintze,R. J. Hemingway,Rolf-Dieter Heuer,J. C. Hill,Stephen Hillier,P. S. Hinde,C. Ho,J. D. Hobbs,Peter R Hobson,D. Hochman,B. Holl,R. J. Homer,S. R. Hou,C. P. Howarth,R. E. Hughes-Jones,P. Igo-Kemenes,Masatoshi Imori,D. C. Imrie,A. Jawahery,P. W. Jeffreys,H. Jeremie,M. Jimack,E. Jin,M. Jobes,R. W. L. Jones,P. Jovanovic,D. Karlen,Kiyotomo Kawagoe,T. Kawamoto,R. G. Kellogg,B. W. Kennedy,Claus Kleinwort,D. E. Klem,G. Knop,T. Kobayashi,L. Koepke,T. P. Kokott,Masatoshi Koshiba,R. Kowalewski,H. Kreutzmann,J. von Krogh,J. Kroll,P. Kyberd,G. D. Lafferty,F. Lamarche,W. J. Larson,M. M.B. Lasota,J. G. Layter,P. Le Du,P. Leblanc,Daniel Lellouch,P. Lennert,L. Lessard,Lorne Levinson,S. L. Lloyd,F. K. Loebinger,J. M. Lorah,B. Lorazo,Michael J Losty,J. Ludwig,N. Lupu,J. Ma,A. A. Macbeth,Marcello Mannelli,Stefano Marcellini,G. Maringer,J. P. Martin,Tetsuro Mashimo,P. Mättig,U. Maur,T. J. McMahon,A. C. McPherson,Frans Meijers,D. Menszner,F. S. Merritt,H. Mes,Aldo Michelini,R. P. Middleton,Giora Mikenberg,D. J. Miller,C. Milstene,Makoto Minowa,W. Mohr,Alessandro Montanari,Takehiko Mori,M. W. Moss,Achim Müller,P. G. Murphy,W. J. Murray,B. Nellen,Harold Nguyen,Mitsuaki Nozaki,A. J.P. O'Dowd,S. W. O'Neale,B. P. O'Neill,F. G. Oakham,F. Odorici,M. Ogg,H. Oh,M. J. Oreglia,S. Orito,G. N. Patrick,S. J. Pawley,Ana Beatriz Alvarez Perez,J. E. Pilcher,J. L. Pinfold,D. E. Plane,B. Poli,A. Possoz,A. Pouladdej,T. W. Pritchard,Gunter Quast,J. Raab,M. W. Redmond,D. L. Rees,M. Regimbald,K. Riles,C. M. Roach,F. Roehner,A. Rollnik,J. M. Roney,A. M. Rossi,P. Routenburg,K. Runge,O. Runolfsson,S. Sanghera,R. A. Sansum,M. Sasaki,B. J. Saunders,A. D. Schaile,O. Schaile,W. Schappert,P. Scharff-Hansen,H. von der Schmitt,S. Schreiber,John H. Schwarz,A. Shapira,B. C. Shen,Peter Sherwood,A. Simon,G. P. Siroli,Andris Skuja,A. M. Smith,T. J. Smith,G. A. Snow,E. J. Spreadbury,R. W. Springer,M. Sproston,K. Stephens,H. E. Stier,R. Ströhmer,D. Strom,H. Takeda,Tohru Takeshita,T. Tsukamoto,M. F. Turner,G. Tysarczyk,D. Van den plas,G. J. VanDalen,C. J. Virtue,A. Wagner,C. Wahl,H. Wang,C. P. Ward,D. R. Ward,J. Waterhouse,P. M. Watkins,A. T. Watson,N. K. Watson,M. S. Weber,S. Weisz,Norbert Wermes,M. Weymann,G. W. Wilson,J. A. Wilson,I. Wingerter,V. H. Winterer,N. C. Wood,S. Wotton,B. Wuensch,T. R. Wyatt,R. Yaari,H. Yamashita,Y. Yang,G. Yekutieli,Wolfram Dietrich Zeuner,G. T. Zorn,S. Zylberajch +277 more
TL;DR: In this paper, the cross section for e+e− → hadrons from a scan around the Z0 pole was determined, based on 4350 hadronic events collected over seven energy points between 89.26 and 93.26 GeV, and a total decay width of 2.60±0.13 GeV.