Observation of a Ξ bound state in the 12C(K -, K +) reaction at 1.8 GeV /c

Tomofumi Nagae, Jung Keun Ahn, Yuya Akazawa, Kanae Aoki, Elena Botta, Hiroyuki Ekawa, Petr Evtoukhovitch, Alessandro Feliciello, Manami Fujita, Toshiyuki Gogami, Shoichi Hasegawa, Tomoyuki Hasegawa, Shuhei Hayakawa, Tomonori Hayakawa, Ryotaro Honda, Kenji Hosomi, Yudai Ichikawa, Ken'Ichi Imai, Wooseung Jung, Shunsuke KanatsukiShinhyung Kim, Sinji Kinbara, Kazuya Kobayashi, Jaeyong Lee, Simonetta Marcello, Koji Miwa, Taejin Moon, Yoshiyuki Nakada, Manami Nakagawa, Takuya Nanamura, Megumi Naruki, Atsushi Sakaguchi, Hiroyuki Sako, Susumu Sato, Yuki Sasaki, Kotaro Shirotori, Hitoshi Sugimura, Toshiyuki Takahashi, Hirokazu Tamura, Kiyoshi Tanida, Zviadi Tsamalaidze, Mifuyu Ukai, Takeshi O. Yamamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

For the full understanding of baryon-baryon interactions in flavor SU(3), the ΞN interaction is the last missing piece of information. So far, we have revealed the ΛN interaction to be attractive (UΛ ≈ 30 MeV), and ςN interaction to be repulsive in the medium to heavy mass-number region. The ΛΛ bonding energy is weakly attractive. While we have a few experimental observations suggesting the ΞN interaction would be attractive, there still exist large theoretical ambiguities weather it is attractive or not. Experimental determinations on the existence of bound states of Ξ hypernuclei by observing bound-state peaks are strongly awaited. In this report, a new preliminary result on the missing-mass spectrum of a 12C(K-, K+) reaction, which strongly suggests the existence of Ξ-hypernuclear bound states, is presented.

Original languageEnglish
Title of host publication13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018
EditorsReinhard Schumacher, Liguang Tang
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735418721
DOIs
Publication statusPublished - 2019 Jul 25
Event13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018 - Portsmouth, United States
Duration: 2018 Jun 242018 Jun 29

Publication series

NameAIP Conference Proceedings
Volume2130
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018
CountryUnited States
CityPortsmouth
Period18/6/2418/6/29

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Nagae, T., Ahn, J. K., Akazawa, Y., Aoki, K., Botta, E., Ekawa, H., Evtoukhovitch, P., Feliciello, A., Fujita, M., Gogami, T., Hasegawa, S., Hasegawa, T., Hayakawa, S., Hayakawa, T., Honda, R., Hosomi, K., Ichikawa, Y., Imai, KI., Jung, W., ... Yamamoto, T. O. (2019). Observation of a Ξ bound state in the 12C(K -, K +) reaction at 1.8 GeV /c. In R. Schumacher, & L. Tang (Eds.), 13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018 [020015] (AIP Conference Proceedings; Vol. 2130). American Institute of Physics Inc.. https://doi.org/10.1063/1.5118383