S
S. Tatsumi
Researcher at Kobe University
Publications - 16
Citations - 472
S. Tatsumi is an academic researcher from Kobe University. The author has contributed to research in topics: Neutrino & Lepton. The author has an hindex of 12, co-authored 16 publications receiving 470 citations.
Papers
More filters
Journal ArticleDOI
Limits to nu micro, nu e--> nu tau oscillations and nu micro, nu e--> tau - direct coupling.
N. Ushida,T. Kondo,Shigeki Tasaka,I. G. Park,J. S. Song,T. Hara,Yasuhiro Homma,Y. Tsuzuki,G. Fujioka,H. Fukushima,Y. Takahashi,S. Tatsumi,C. Yokoyama,K. Fujiwara,K. Taruma,S. Y. Bahk,C. O. Kim,Jaebeom Park,D. C. Bailey,S. Conetti,P. Mercure,J. Trischuk,M. Turcotte,Shigeki Aoki,K. Chiba,H. Fuchi,K. Hoshino,K. Kodama,R. Matsui,Motoaki Miyanishi,M. Nakamura,Koji Nakazawa,K. Niu,Kimio Niwa,M. Ohashi,H. Sasaki,Yasuhiro Tomita,N. Torii,O. Yamakawa,Y. Yanagisawa,Aubrecht Gj nd,J. M. Dunlea,S. Errede,A. Gauthier,M. Gutzwiller,S. Kuramata,G. A. Oleynik,N. W. Reay,K. Reibel,R. A. Sidwell,N. R. Stanton,K. Moriyama,H. Shibata,O. Kusumoto,Y. Noguchi,T. Okusawa,M. Teranaka,J. Yamato,H. Okabe,J. Yokota,S. G. Frederiksen,C. J. D. Hébert,J. Hebert,B. McLeod +63 more
TL;DR: The direct-coupling limits are used to show that most tau/sup -/ decays must contain a neutral lepton other than ..nu../sub ..mu../ or ..nu..sub e/.
Journal ArticleDOI
Cross-sections for Neutrino Production of Charmed Particles
N. Ushida,T. Kondo,Shigeki Tasaka,I. G. Park,J. S. Song,T. Hara,Yasuhiro Homma,Y. Tsuzuki,G. Fujioka,H. Fukushima,Y. Takahashi,S. Tatsumi,C. Yokoyama,K. Fujiwara,K. Taruma,S. Y. Bahk,C. O. Kim,Jaebeom Park,D. C. Bailey,S. Conetti,P. Mercure,J. Trischuk,M. Turcotte,Shigeki Aoki,K. Chiba,H. Fuchi,K. Hoshino,K. Kodama,R. Matsui,Motoaki Miyanishi,Mitsuhiro Nakamura,Kazuhiro Nakazawa,K. Niu,Kimio Niwa,M. Ohashi,H. Sasaki,Y. Tomita,N. Torii,O. Yamakawa,Y. Yanagisawa,Gordon J. Aubrecht,J. M. Dunlea,S. Errede,A. Gauthier,M. Gutzwiller,S. Kuramata,G. A. Oleynik,N. W. Reay,K. Reibel,R. A. Sidwell,N. R. Stanton,K. Moriyama,H. Shibata,O. Kusumoto,Y. Noguchi,T. Okusawa,M. Teranaka,J. Yamato,H. Okabe,J. Yokota,P. Cote,S. G. Frederiksen,C. J. D. Hébert,J. Hebert,B. McLeod,A. Thibaudeau,M. Kazuno,H. Shibuya,I. A. Lovatt,J. F. Martin,D. Pitman,J.D. Prentice,B. J. Stacey,T. S. Yoon,Y. Maeda +74 more
TL;DR: In this article, the authors obtained an average relative charmed-particle production cross section of σ(ν μ → c μ − ) σ (νμ →μ − ) =4.9 − 0.6 + 0.7 %, at an average neutrino energy of 22 GeV.
Journal ArticleDOI
Experimental details on lifetime measurements of neutrino produced charmed particles in a tagged emulsion spectrometer
N. Ushida,T. Kondo,G. Fujioka,H. Fukushima,Y. Takahashi,S. Tatsumi,C. Yokoyama,Yasuhiro Homma,Y. Tsuzuki,S. Y. Bahk,C. O. Kim,Jaebeom Park,J. Song,D. C. Bailey,S. Conetti,J. Fisher,J. Trischuk,H. Fuchi,K. Noshino,Motoaki Miyanishi,K. Niu,Kimio Niwa,H. Shibuya,Y. Yanagisawa,S. Errede,M. Gutzwiller,S. Kuramata,N. W. Reay,K. Reibel,Ta Romanowski,R. A. Sidwell,N. R. Stanton,K. Moriyama,H. Shibata,T. Hara,O. Kusumoto,Y. Noguchi,M. Teranaka,H. Okabe,J. Yokota,J. Harnois,C. J. D. Hébert,J. Hebert,S. Lokanathan,B. McLeod,Shigeki Tasaka,P. Davis,J. F. Martin,D. Pitman,J.D. Prentice,P. Sinervo,T. S. Yoon,H. Kimura,Y. Maeda +53 more
TL;DR: In this paper, a new type of hybrid appaatus consisting of an emulsion target and a magnet spectrometer was successfully used in an experiment to measure lifetimes of charmed particles produced by the wide-band neutrino beam from 350 GeV protons at Fermilab.
Journal ArticleDOI
Upper limits to. nu. /sub. mu. /-. nu. /sub tau/ oscillation and. nu. /sub. mu. /-tau coupling
N. Ushida,T. Kondo,G. Fujioka,H. Fukushima,Y. Takahashi,S. Tatsumi,C. Yokoyama,Yasuhiro Homma,Y. Tsuzuki,Saewoong Bahk,C. O. Kim,Jaebeom Park,J. S. Song,David Bailey,S. Conetti,J. Fischer,J. Trischuk,H. Fuchi,K. Hoshino,Motoaki Miyanishi,K. Niu,Kimio Niwa,H. Shibuya,Y. Yanagisawa,S. Errede,M. Gutzwiller,S. Kuramata,N. W. Reay,K. Reibel,Ta Romanowski,R. A. Sidwell,N. R. Stanton,K. Moriyama,H. Shibata,T. Hara,O. Kusumoto,Y. Noguchi,M. Teranaka,H. Okabe,J. Yokota,J. Harnois,C. J. D. Hébert,J. Hebert,S. Lokanathan,B. McLeod,Shigeki Tasaka,P. Davis,J. F. Martin,D. Pitman,J.D. Prentice,P. Sinervo,T. S. Yoon,H. Kimura,Y. Maeda +53 more
TL;DR: In this article, a search for tau lepton production in a sample of 1241 neutrino interactions with use of a hybrid emulsion spectrometer in the Fermilab wide-band neutrinos beam is reported No such events are seen and an upper limit to the nu/sub mu/tau coupling of 063% (90% CL) is set for nu-sub mu/-nu/sub tau/ oscillations.
Journal ArticleDOI
Measurement of the D0 lifetime
N. Ushida,T. Kondo,G. Fujioka,H. Fukushima,Y. Takahashi,S. Tatsumi,C. Yokoyama,Yasuhiro Homma,Y. Tsuzuki,Saewoong Bahk,C. O. Kim,Jaebeom Park,J. S. Song,David Bailey,S. Conetti,J. Fischer,J. Trischuk,H. Fuchi,K. Hoshino,Motoaki Miyanishi,K. Niu,Kimio Niwa,H. Shibuya,Y. Yanagisawa,S. Errede,M. Gutzwiller,S. Kuramata,N. W. Reay,K. Reibel,Ta Romanowski,R. A. Sidwell,N. R. Stanton,K. Moriyama,H. Shibata,T. Hara,O. Kusumoto,Y. Noguchi,M. Teranaka,H. Okabe,J. Yokota,J. Harnois,C. J. D. Hébert,J. Hebert,S. Lokanathan,B. McLeod,Shigeki Tasaka,P. Davis,J. F. Martin,D. Pitman,J.D. Prentice,P. Sinervo,T. S. Yoon,H. Kimura,Y. Maeda +53 more
TL;DR: In an experiment measuring charmed-particle lifetimes with a hybrid emulsion spectrometer, 685 neutrino and antineutrino interactions produced by the wide-band beam at Fermi National Accelerator Laboratory have been located as mentioned in this paper.