EPJ Web Conf.
Volume 262, 2022International Conference on Exotic Atoms and Related Topics - EXA2021
|Number of page(s)||7|
|Published online||27 April 2022|
Summary of the K−pp bound-state observation in E15 and future prospects
1 RIKEN Cluster for Pioneering Research, RIKEN, Wako 351-0198, Japan
2 Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
3 Department of Physics, Osaka University, Osaka 560-0043, Japan
4 Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia V8W 3P6, Canada
5 Department of Physics, Seoul National University, Seoul 151-742, South Korea
6 National Institute of Physics and Nuclear Engineering - IFIN HH, Bucharest, Romania
7 Stefan-Meyer-Institut für subatomare Physik, A-1020 Vienna, Austria
8 Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Torino, Torino, Italy
9 Dipartimento di Fisica Generale, Universita’ di Torino, Torino, Italy
10 Laboratori Nazionali di Frascati dell’ INFN, I-00044 Frascati, Italy
11 High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
12 Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
13 Department of Physics, The University of Tokyo, Tokyo 113-0033, Japan
14 Laboratory of Physics, Osaka Electro-Communication University, Osaka 572-8530, Japan
15 ASRC, Japan Atomic Energy Agency, Ibaraki 319-1195, Japan
16 Department of Physics, Kyoto University, Kyoto 606-8502, Japan
17 Technische Universität München, D-85748, Garching, Germany
18 Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
19 Research Center for Electron Photon Science (ELPH), Tohoku University, Sendai 982-0826, Japan
20 Engineering Science Laboratory, Chubu University, Aichi 487-8501, Japan
21 Centro Ricerche Fermi-Museo Storico della Fisica e Centro studi e ricerche “Enrico Fermi”, 000184 Rome, Italy
22 Department of Physics, Tokyo Metropolitan University, Tokyo 192-0397, Japan
23 Institute for Chemical Research, Kyoto University, Kyoto 611-0011, Japan
* e-mail: email@example.com
Published online: 27 April 2022
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.
© The Authors, published by EDP Sciences, 2022
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