1. Summary of the $K^- pp$ bound-state observation in E15 and future prospects
- Author
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Fuminori Sakuma, Shuhei Ajimura, Takaya Akaishi, Hidemitsu Asano, Massimiliano Bazzi, George Beer, Hyoungchan Bhang, Mario Bragadireanu, Paul Buehler, Luigi Busso, Michael Cargnelli, Seonho Choi, Alberto Clozza, Catalina Curceanu, Shun Enomoto, Hiroyuki Fujioka, Yuya Fujiwara, Tomokazu Fukuda, Carlo Guaraldo, Tadashi Hashimoto, Ryugo S. Hayano, Toshihiko Hiraiwa, Masami Iio, Mihai Iliescu, Kentaro Inoue, Yosuke Ishiguro, Takashi Ishikawa, Shigeru Ishimoto, Kenta Itahashi, Masahiko Iwasaki, Masaaki Iwai, Koki Kanno, Kazuma Kato, Yuko Kato, Shingo Kawasaki, Paul Kienle, Hiroshi Kou, Yue Ma, Johann Marton, Yasuyuki Matsuda, Marco Miliucci, Yutaka Mizoi, Ombretta Morra, Rie Murayama, Tomofumi Nagae, Hiroyuki Noumi, Hiroaki Ohnishi, Shinji Okada, Haruhiko Outa, Kyoichiro Ozawa, Kristian Piscicchia, Yuta Sada, Atsushi Sakaguchi, Masaharu Sato, Alessandro Scordo, Michiko Sekimoto, Hexi Shi, Kotaro Shirotori, Diana Sirghi, Florin Sirghi, Shoji Suzuki, Takatoshi Suzuki, Kiyoshi Tanida, Hideyuki Tatsuno, Makoto Tokuda, Dai Tomono, Akihisa Toyoda, Kyo Tsukada, Oton Vázquez Doce, Eberhard Widmann, Takumi Yamaga, Toshimitsu Yamazaki, Chihiro Yoshida, Qi Zhang, and Johann Zmeskal
- Abstract
The possible existence of deeply-bound $\bar K$-nuclear bound states, kaonic nuclei, has been widely discussed as products of the strongly attractive $\bar K$Ninteraction in I = 0 channels. Investigations of those exotic states will provide us unique information of the $\bar K$Ninteraction below the threshold, which is still not fully understood so far. Recently, we observed the simplest kaonic nuclei, $\bar K$NN, having a much deeper binding energy than normal nuclei via inflight (K−,N) reactions at the J-PARC E15 experiment. For further studies, we have proposed a series of experimental programs for the systematic investigation of light kaonic nuclei, from $\bar K$N(Λ(1405)) to $\bar K$NNNN. We will measure the $\bar K$NNN(A= 3) system at the new experiment approved as J-PARC E80, as a first step toward a comprehensive study.
- Published
- 2022