K−K−pp - an Important Gateway Toward Multi-Kaonic Nuclei

Maeda, Shuji; Akaishi, Yoshinori; Yamazaki, T.

doi:10.7566/jpscp.17.082007

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2021

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“…Extensive measurements of anti-kaonic hydrogen atoms [1,2,3] and low-energy KN scattering [4] have revealed the strongly attractive nature of the KN interaction in the isospin I = 0 channel. Consequently, the possible existence of deeply bound kaonic nuclear states (kaonic nuclei) has been widely discussed [5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24]. Kaonic nuclei are predicted to be compact due to the strong KN attraction, suggesting that high-density nuclear matter is realized in kaonic systems.…”

Section: Introductionmentioning

confidence: 99%

Recent results and future prospects of kaonic nuclei at J-PARC

Sakuma,

Ajimura,

Akaishi

et al. 2021

Preprint

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K-nuclear bound systems, kaonic nuclei, have been widely discussed as products of the strongly attractive KN interaction in I = 0 channels. Recently, we demonstrated that kaonic nuclei can be produced via in-flight (K − , N ) reactions using the low-momentum DC kaon beam at the J-PARC E15 experiment. We observed the simplest kaonic nuclei, K − pp, having a much deeper binding energy than normal nuclei. For further studies, we have proposed a series of experimental programs for the systematic investigation of light kaonic nuclei, from KN (Λ(1405)) to KN N N N . In the new experiment approved as J-PARC E80, we will measure the KN N N (A = 3) system as a first step toward a comprehensive study.

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