1. Search for the K-pp bound state via the 3He(K-, n) reaction at 1 GeV/c
- Author
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Michael Cargnelli, S. Choi, T. Yamaga, Kiyoshi Tanida, Hexi Shi, Masatoshi Sato, Tomofumi Nagae, K. Itahashi, M. Iliescu, Hyoungchan Bhang, H. Yim, D. Faso, J. Zmeskal, C. Guaraldo, Atsushi Sakaguchi, Makoto Tokuda, E. Widmann, T. Suzuki, Y. Sada, M. Sekimoto, Akihiro Toyoda, D. Tomono, Tomokazu Fukuda, S. Kawasaki, Y. Fujiwara, O. Morra, T. Ishiwatari, Ken Suzuki, Paul Buehler, Fuminori Sakuma, L. Busso, M. Poli Lener, Yutaka Mizoi, O. Vazquez Doce, T. Ishikawa, Hiroaki Ohnishi, S. Ajimura, Yue Ma, Diana Sirghi, T. Hashimoto, Mario Bragadireanu, Y. Ishiguro, Masami Iio, Haruhiko Outa, Paul Kienle, Y. Kato, K. Inoue, S. Ishimoto, Hiroyuki Fujioka, Shinji Okada, Catalina Curceanu, A. Romero Vidal, H. Tatsuno, T. Yamazaki, Hiroyuki Noumi, Johann Marton, H. Kou, Alessandro Scordo, Q. Zhang, S. Y. Suzuki, B. K. Wuenschek, Kyo Tsukada, G. A. Beer, Masahiko Iwasaki, Ryugo S. Hayano, Florin Sirghi, Shun Enomoto, Toshihiko Hiraiwa, K. Piscicchia, Yasuhiro H. Matsuda, and M. Iwai
- Subjects
Physics ,Nuclear physics ,History ,Particle physics ,Hadron ,Spectrum (functional analysis) ,Bound state ,Computer Science Applications ,Education - Abstract
The J-PARC E15 experiment searches for the simplest kaonic nuclear bound state, K−pp, via the 3He(K−,n) reaction at the K1.8BR beam-line in the J-PARC hadron experimental facility. We performed the first data-taking in May, 2013, with 5 × 109 incident kaons on the 3He target. The preliminary results are reported focusing on the forward-neutron spectrum, which shows a clear peak structure composed of the quasi-elastic K−"n" → K−n and the charge-exchange K−"p" → 0n reactions as expected.
- Published
- 2014