A. O. Tokiyasu
Kyoto University
32 Papers
107 Citations
A. O. Tokiyasu is an academic researcher from Kyoto University. The author has contributed to research in topics: Scintillator & Scattering. The author has an hindex of 9, co-authored 19 publications. Previous affiliations of A. O. Tokiyasu include Osaka University.
Chat about Author
Papers
Observation of the "k-pp " -like structure in the d (π+, K+) reaction at 1.69 GeV/ c
Yudai Ichikawa,Yudai Ichikawa,Tomofumi Nagae,Hiroyuki Fujioka,Hyoungchan Bhang,Stefania Bufalino,Hiroyuki Ekawa,Hiroyuki Ekawa,Petr Evtoukhovitch,Alessandro Feliciello,Shoichi Hasegawa,Shuhei Hayakawa,Ryotaro Honda,Kenji Hosomi,Kenichi Imai,Shigeru Ishimoto,C. Joo,Shunsuke Kanatsuki,R. Kiuchi,Takeshi Koike,Harphool Kumawat,Y. Matsumoto,Koji Miwa,Manabu Moritsu,Megumi Naruki,Masayuki Niiyama,Y. Nozawa,Ryosuke Ota,Atsushi Sakaguchi,Hiroyuki Sako,V. Samoilov,Susumu Sato,Kotaro Shirotori,Hitoshi Sugimura,Shoji Suzuki,Toshiyuki Takahashi,T. Takahashi,Hirokazu Tamura,Toshiyuki Tanaka,Kiyoshi Tanida,A. O. Tokiyasu,Z. Tsamalaidze,B. J. Roy,Mifuyu Ukai,T. O. Yamamoto,Seongbae Yang +45 more
TL;DR: In this paper, the authors observed a $K^{-}pp$-like structure in the $d(\pi + },K^{+ })$ reaction at 1.69 GeV$/c.
Observation of the "$K^-pp$"-like structure in the $d(\pi^+, K^+)$ reaction at 1.69 GeV/$c$
Yudai Ichikawa,Tomofumi Nagae,Hiroyuki Fujioka,Hyoungchan Bhang,Stefania Bufalino,Hiroyuki Ekawa,Petr Evtoukhovitch,Alessandro Feliciello,Shoichi Hasegawa,Shuhei Hayakawa,Ryotaro Honda,Kenji Hosomi,Kenichi Imai,Shigeru Ishimoto,C. Joo,Shunsuke Kanatsuki,R. Kiuchi,Takeshi Koike,Harphool Kumawat,Y. Matsumoto,Koji Miwa,Manabu Moritsu,Megumi Naruki,Masayuki Niiyama,Y. Nozawa,Ryosuke Ota,Atsushi Sakaguchi,Hiroyuki Sako,V. Samoilov,Susumu Sato,Kotaro Shirotori,Hitoshi Sugimura,Shoji Suzuki,Toshiyuki Takahashi,Tomonori Takahashi,Hirokazu Tamura,Toshiyuki Tanaka,Kiyoshi Tanida,A. O. Tokiyasu,Z. Tsamalaidze,B. J. Roy,Mifuyu Ukai,Yamamoto Takeshi,Seongbae Yang +43 more
TL;DR: In this article, the authors observed a "$K^-pp$"-like structure in the $d(\pi^+,K^+)$ reaction at 1.69 GeV/$c.
66
Beam and SKS spectrometers at the K1.8 beam line
Toshiyuki Takahashi,Satoshi Adachi,Michelangelo Agnello,Kanae Aoki,O. Araoka,B. Bassalleck,Elena Botta,Stefania Bufalino,Nobuyuki Chiga,Petr Evtoukhovitch,Alessandro Feliciello,Juergen Franz,Hiroyuki Fujioka,Shuhei Hayakawa,Erina Hirose,Ryotaro Honda,Kenji Hosomi,Yudai Ichikawa,Y. Igarashi,M. Iida,Masahiro Ikeno,Kenta Itahashi,N. Ishibashi,Shigeru Ishimoto,R. Iwasaki,Y. Kakiguchi,Katsuyu Kasami,Sunji Kim,R. Kiuchi,Takeshi Koike,Y. Komatsu,Alexandr Kustov,David Mjavia,Yasuhiro Makida,S. Marcello,T. Maruta,Shinichi Masumoto,K. Matsuoka,Koji Miwa,Anatolii Moiseenko,M. Moritsu,Tomofumi Nagae,Megumi Naruki,Hiroyuki Noumi,Hirokazu Ohhata,Takahiro Okamura,Ryosuke Ota,Masatoshi Saito,Atsushi Sakaguchi,V. Samoilov,M. Sato,Yoshinori Sato,Michiko Sekimoto,Yoshihisa Shirakabe,Kotaro Shirotori,Hitoshi Sugimura,Shoji Suzuki,Yoshihiro Suzuki,Hitoshi Takahashi,T. Takahashi,Hirokazu Tamura,M. Tanaka,K. Tauchi,Toshiyuki Tanaka,Kiyoshi Tanida,A. O. Tokiyasu,K. Yoshida,Akihisa Toyoda,Z. Tsamalaidze,Tomohisa Uchida,Mifuyu Ukai,Hiroaki Watanabe,T. O. Yamamoto,Y. Yonemoto,Choong-Jae Yoon +74 more
TL;DR: In this article, high-resolution spectrometers for both incident beams and scattered particles have been constructed at the K 1.8 beam line of the Hadron Experimental Facility at J-PARC.
High-resolution search for the Theta(+) pentaquark via a pion-induced reaction at J-PARC
M. Moritsu,Shunsuke Adachi,Michelangelo Agnello,S. Ajimura,Kanae Aoki,H. C. Bhang,B. Bassalleck,Elena Botta,S. Bufalino,Nobuyuki Chiga,Hiroyuki Ekawa,Petr Evtoukhovitch,A. Feliciello,Hiroyuki Fujioka,Shuhei Hayakawa,F. Hiruma,Ryotaro Honda,K. Hosomi,Yudai Ichikawa,Masaharu Ieiri,Y. Igarashi,Kenichi Imai,N. Ishibashi,S. Ishimoto,K. Itahashi,R. Iwasaki,C. W. Joo,Shunsuke Kanatsuki,Minu Kim,S. J. Kim,R. Kiuchi,Takeshi Koike,Y. Komatsu,V. V. Kulikov,S. Marcello,Shinichi Masumoto,Y. Matsumoto,K. Matsuoka,Koji Miwa,Tomofumi Nagae,Megumi Naruki,M. Niiyama,Hiroyuki Noumi,Y. Nozawa,Ryosuke Ota,Kyoichiro Ozawa,N. Saito,Atsushi Sakaguchi,Hiroyuki Sako,V. Samoilov,Mitsuhiro Sato,Susumu Sato,Yoichi Sato,S. Sawada,M. Sekimoto,K. Shirotori,K. Shirotori,Hitoshi Sugimura,S. Y. Suzuki,Hitoshi Takahashi,Tadayuki Takahashi,T. Takahashi,Hirokazu Tamura,Takahiro Tanaka,Kiyoshi Tanida,Kiyoshi Tanida,A. O. Tokiyasu,N. Tomida,Z. Tsamalaidze,Mifuyu Ukai,K. Yagi,T. O. Yamamoto,Seongbae Yang,Y. Yonemoto,C. J. Yoon,K. Yoshida +75 more
TL;DR: In this paper, the pentaquark penta-theta+ reaction with beam momenta of 1.92 and 2.01 GeV/$c$ at J-PARC has been searched for via the ${\ensuremath{\pi}}^{-}}p\ensuresuremath{rightarrow}{K}^{\ensure-math{--}}X$ reaction, and the upper limits on the production cross section averaged over the scattering angle from 2 to 15 were found to be less than 0.28.
Inclusive spectrum of the $d(\pi^+, K^+)$ reaction at 1.69 GeV/c
Yudai Ichikawa,Tomofumi Nagae,Hyoungchan Bhang,Stefania Bufalino,Hiroyuki Ekawa,Petr Evtoukhovitch,Alessandro Feliciello,Hiroyuki Fujioka,Shoichi Hasegawa,Shuhei Hayakawa,Ryotaro Honda,Kenji Hosomi,Kenichi Imai,Shigeru Ishimoto,C. Joo,Shunsuke Kanatsuki,R. Kiuchi,Takeshi Koike,Harphool Kumawat,Y. Matsumoto,Koji Miwa,Manabu Moritsu,Megumi Naruki,Masayuki Niiyama,Y. Nozawa,Ryosuke Ota,Atsushi Sakaguchi,Hiroyuki Sako,V. Samoilov,Susumu Sato,Kotaro Shirotori,Hitoshi Sugimura,Shoji Suzuki,Toshiyuki Takahashi,T. Takahashi,Hirokazu Tamura,Toshiyuki Tanaka,Kiyoshi Tanida,A. O. Tokiyasu,Z. Tsamalaidze,B. J. Roy,Mifuyu Ukai,Takeshi O. Yamamoto,Seongbae Yang +43 more
TL;DR: In this article, the authors measured an inclusive missing-mass spectrum of the deuteron reaction at the pion incident momentum of 1.69 GeV/$c$ at the laboratory scattering angles between 2$^\circ$ and 16$^ \circ$ with the missing mass resolution of 2.7
22