T. Namba
University of Tokyo
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by T. Namba.
Physical Review Letters | 2003
M. H. Ahn; S. Aoki; Hyoung Chan Bhang; S. Boyd; David William Casper; Jin-Oh Choi; Satoru Fukuda; Y. Fukuda; W. Gajewski; T. Hara; M. Hasegawa; T. Hasegawa; Y. Hayato; J. Hill; Atsushi Ichikawa; A. Ikeda; T. Inagaki; T. Ishida; T. Ishii; M. Ishitsuka; Y. Itow; T. Iwashita; H.I. Jang; J. S. Jang; E. J. Jeon; C. K. Jung; T. Kajita; J. Kameda; K. Kaneyuki; I. Kato
The K2K experiment observes indications of neutrino oscillation: a reduction of nu(mu) flux together with a distortion of the energy spectrum. Fifty-six beam neutrino events are observed in Super-Kamiokande (SK), 250 km from the neutrino production point, with an expectation of 80.1(+6.2)(-5.4). Twenty-nine one ring mu-like events are used to reconstruct the neutrino energy spectrum, which is better matched to the expected spectrum with neutrino oscillation than without. The probability that the observed flux at SK is explained by statistical fluctuation without neutrino oscillation is less than 1%.
Physics Letters B | 1998
S. Moriyama; M. Minowa; T. Namba; Y. Inoue; Yuko Takasu; Akira Yamamoto
We have searched for axions which could be produced in the solar core by exploiting their conversion to X rays in a strong laboratory magnetic field. The signature of the solar axion is an increase in the rate of the X rays detected in a magnetic helioscope when the sun is within its acceptance. From the absence of such a signal we set a 95% confidence level limit on the axion coupling to two photons
New Journal of Physics | 2004
Pietro Antonioli; Richard Tresch Fienberg; F. Fleurot; Y. Fukuda; W. Fulgione; A. Habig; Jaret Heise; A.B. McDonald; C. Mills; T. Namba; Leif J Robinson; K. Scholberg; Michael Schwendener; Roger W. Sinnott; Blake Stacey; Y. Suzuki; Reda Tafirout; C. Vigorito; B. Viren; C.J. Virtue; A. Zichichi
g_{a\gamma\gamma}\equiv 1/M < 6.0\times 10^{-10}
Physical Review Letters | 2012
Takayuki Yamazaki; Akira Miyazaki; Taikan Suehara; T. Namba; S. Asai; T. Kobayashi; Haruo Saito; I. Ogawa; T. Idehara; S. Sabchevski
GeV
Physics Letters B | 2014
Akira Ishida; T. Namba; S. Asai; T. Kobayashi; Haruo Saito; Mitsuhiro Yoshida; K. Tanaka; Akira Yamamoto
^{-1}
European Physical Journal D | 2017
Xing Fan; Shusei Kamioka; Toshiaki Inada; Takayuki Yamazaki; T. Namba; S. Asai; Junko Omachi; Kosuke Yoshioka; Makoto Kuwata-Gonokami; Akira Matsuo; K. Kawaguchi; Koichi Kindo; Hiroyuki Nojiri
, provided the axion mass
Physics Letters B | 2014
Toshiaki Inada; T. Yamaji; Shunsuke Adachi; T. Namba; S. Asai; T. Kobayashi; Kenji Tamasaku; Yoshihito Tanaka; Yuichi Inubushi; Kei Sawada; Makina Yabashi; Tetsuya Ishikawa
m_a<0.03
Materials Science Forum | 2010
Akira Miyazaki; Takayuki Yamazaki; Taikan Suehara; T. Namba; S. Asai; Tomio Kobayashi; Hruo Saito; T. Idehara; I. Ogawa; Y. Urushizaki; S. Sabchevski
eV. The limit on the coupling is factor 4.5 more stringent than the recent experimental result. This is the first experiment whose sensitivity to
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2002
T. Namba; Y. Inoue; S. Moriyama; M. Minowa
g_{a\gamma\gamma}
Applied Sciences | 2017
Toshiaki Inada; Takayuki Yamazaki; Tomohiro Yamaji; Yudai Seino; Xing Fan; Shusei Kamioka; T. Namba; S. Asai
is higher than the limit constrained by the solar age consideration.
