1. J-PARC E27 Experiment to Search for a Nuclear Kaon Bound State K-pp
- Author
-
Hitoshi Sugimura, Seongbae Yang, R. Kiuchi, Kenichi Imai, Atsushi Sakaguchi, T. O. Yamamoto, C. Joo, S. Ishimoto, Megumi Naruki, M. Moritsu, Hiroyuki Fujioka, Shunsuke Kanatsuki, K. Hosomi, Hiroyuki Ekawa, V. Samoilov, Toshio Takahashi, Alessandro Feliciello, Mifuyu Ukai, Ryosuke Ota, Harphool Kumawat, Toshiyuki Tanaka, Shoichi Hasegawa, S. Bufalino, Kiyoshi Tanida, Shuhei Hayakawa, K. Shirotori, M. Niiyama, Koji Miwa, Takeshi Koike, Susumu Sato, Petr Evtoukhovitch, Y. Nozawa, T. Takahashi, Yudai Ichikawa, B. J. Roy, Hirokazu Tamura, Z. Tsamalaidze, S. Y. Suzuki, Tomofumi Nagae, Hiroyuki Sako, Y. Matsumoto, A. O. Tokiyasu, Ryotaro Honda, and H. C. Bhang
- Subjects
Nuclear physics ,Nuclear reaction ,Physics ,Particle decay ,Pion ,Meson ,Bound state ,Binding energy ,Hyperon ,Nucleon ,Atomic and Molecular Physics, and Optics - Abstract
In the J-PARC E27 experiment, we search for a K − pp bound state via the d(π +, K +) reaction at 1.7 GeV/c at the K1.8 beam line. The binding energy and decay width of the K − pp bound state can be obtained in the missing mass measurement with a good energy resolution of 2 MeV/c 2. A range counter array (RCA) was constructed to detect the two high-momentum protons from the K − pp decay and to reduce the background such as quasi-free hyperon production. Recently, we have carried out a pilot run in June, 2012. The d(π +, K +) missing-mass spectrum has been obtained for the first time. In this report, an overview of the E27 experiment and a preliminary result on this pilot run are presented.
- Published
- 2013
- Full Text
- View/download PDF