EPJ Web of Conferences (Jan 2022)

Summary of the K−pp bound-state observation in E15 and future prospects

  • Sakuma Fuminori,
  • Ajimura Shuhei,
  • Akaishi Takaya,
  • Asano Hidemitsu,
  • Bazzi Massimiliano,
  • Beer George,
  • Bhang Hyoungchan,
  • Bragadireanu Mario,
  • Buehler Paul,
  • Busso Luigi,
  • Cargnelli Michael,
  • Choi Seonho,
  • Clozza Alberto,
  • Curceanu Catalina,
  • Enomoto Shun,
  • Fujioka Hiroyuki,
  • Fujiwara Yuya,
  • Fukuda Tomokazu,
  • Guaraldo Carlo,
  • Hashimoto Tadashi,
  • Hayano Ryugo S.,
  • Hiraiwa Toshihiko,
  • Iio Masami,
  • Iliescu Mihai,
  • Inoue Kentaro,
  • Ishiguro Yosuke,
  • Ishikawa Takashi,
  • Ishimoto Shigeru,
  • Itahashi Kenta,
  • Iwasaki Masahiko,
  • Iwai Masaaki,
  • Kanno Koki,
  • Kato Kazuma,
  • Kato Yuko,
  • Kawasaki Shingo,
  • Kienle Paul,
  • Kou Hiroshi,
  • Ma Yue,
  • Marton Johann,
  • Matsuda Yasuyuki,
  • Miliucci Marco,
  • Mizoi Yutaka,
  • Morra Ombretta,
  • Murayama Rie,
  • Nagae Tomofumi,
  • Noumi Hiroyuki,
  • Ohnishi Hiroaki,
  • Okada Shinji,
  • Outa Haruhiko,
  • Ozawa Kyoichiro,
  • Piscicchia Kristian,
  • Sada Yuta,
  • Sakaguchi Atsushi,
  • Sato Masaharu,
  • Scordo Alessandro,
  • Sekimoto Michiko,
  • Shi Hexi,
  • Shirotori Kotaro,
  • Sirghi Diana,
  • Sirghi Florin,
  • Suzuki Shoji,
  • Suzuki Takatoshi,
  • Tanida Kiyoshi,
  • Tatsuno Hideyuki,
  • Tokuda Makoto,
  • Tomono Dai,
  • Toyoda Akihisa,
  • Tsukada Kyo,
  • Vázquez Doce Oton,
  • Widmann Eberhard,
  • Yamaga Takumi,
  • Yamazaki Toshimitsu,
  • Yoshida Chihiro,
  • Zhang Qi,
  • Zmeskal Johann

DOI
https://doi.org/10.1051/epjconf/202226201008
Journal volume & issue
Vol. 262
p. 01008

Abstract

Read online

The possible existence of deeply-bound $\bar K$K¯-nuclear bound states, kaonic nuclei, has been widely discussed as products of the strongly attractive $\bar K$K¯N interaction in I = 0 channels. Investigations of those exotic states will provide us unique information of the $\bar K$K¯N interaction below the threshold, which is still not fully understood so far. Recently, we observed the simplest kaonic nuclei, $\bar K$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 $\bar K$K¯N (Λ(1405)) to $\bar K$K¯NNNN. We will measure the $\bar K$K¯NNN (A = 3) system at the new experiment approved as J-PARC E80, as a first step toward a comprehensive study.