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 Kanatsuki; Shinhyung 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

doi:10.1063/1.5118383

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

Department of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

12 Scopus citations

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 (U_Λ ≈ 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 language	English
Title of host publication	13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018
Editors	Reinhard Schumacher, Liguang Tang
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735418721
DOIs	https://doi.org/10.1063/1.5118383
State	Published - 25 Jul 2019
Event	13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018 - Portsmouth, United States Duration: 24 Jun 2018 → 29 Jun 2018

Publication series

Name	AIP Conference Proceedings
Volume	2130
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018
Country/Territory	United States
City	Portsmouth
Period	24/06/18 → 29/06/18

Access to Document

10.1063/1.5118383

Cite this

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 Article 020015 (AIP Conference Proceedings; Vol. 2130). American Institute of Physics Inc.. https://doi.org/10.1063/1.5118383

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

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.",

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

note = "Publisher Copyright: {\textcopyright} 2019 Author(s).; 13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018 ; Conference date: 24-06-2018 Through 29-06-2018",

year = "2019",

month = jul,

day = "25",

doi = "10.1063/1.5118383",

language = "English",

series = "AIP Conference Proceedings",

publisher = "American Institute of Physics Inc.",

editor = "Reinhard Schumacher and Liguang Tang",

booktitle = "13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018",

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Nagae, T, Ahn, JK, 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, Kanatsuki, S, Kim, S, Kinbara, S, Kobayashi, K, Lee, J, Marcello, S, Miwa, K, Moon, T, Nakada, Y, Nakagawa, M, Nanamura, T, Naruki, M, Sakaguchi, A, Sako, H, Sato, S, Sasaki, Y, Shirotori, K, Sugimura, H, Takahashi, T, Tamura, H, Tanida, K, Tsamalaidze, Z, Ukai, M & Yamamoto, TO 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., 13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018, Portsmouth, United States, 24/06/18. https://doi.org/10.1063/1.5118383

Observation of a Ξ bound state in the ¹²C(K ^-, K ⁺) reaction at 1.8 GeV /c. / Nagae, Tomofumi; Ahn, Jung Keun; Akazawa, Yuya et al.
13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018. ed. / Reinhard Schumacher; Liguang Tang. American Institute of Physics Inc., 2019. 020015 (AIP Conference Proceedings; Vol. 2130).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Observation of a Ξ bound state in the 12C(K -, K +) reaction at 1.8 GeV /c

AU - Nagae, Tomofumi

AU - Ahn, Jung Keun

AU - Akazawa, Yuya

AU - Aoki, Kanae

AU - Botta, Elena

AU - Ekawa, Hiroyuki

AU - Evtoukhovitch, Petr

AU - Feliciello, Alessandro

AU - Fujita, Manami

AU - Gogami, Toshiyuki

AU - Hasegawa, Shoichi

AU - Hasegawa, Tomoyuki

AU - Hayakawa, Shuhei

AU - Hayakawa, Tomonori

AU - Honda, Ryotaro

AU - Hosomi, Kenji

AU - Ichikawa, Yudai

AU - Imai, Ken'Ichi

AU - Jung, Wooseung

AU - Kanatsuki, Shunsuke

AU - Kim, Shinhyung

AU - Kinbara, Sinji

AU - Kobayashi, Kazuya

AU - Lee, Jaeyong

AU - Marcello, Simonetta

AU - Miwa, Koji

AU - Moon, Taejin

AU - Nakada, Yoshiyuki

AU - Nakagawa, Manami

AU - Nanamura, Takuya

AU - Naruki, Megumi

AU - Sakaguchi, Atsushi

AU - Sako, Hiroyuki

AU - Sato, Susumu

AU - Sasaki, Yuki

AU - Shirotori, Kotaro

AU - Sugimura, Hitoshi

AU - Takahashi, Toshiyuki

AU - Tamura, Hirokazu

AU - Tanida, Kiyoshi

AU - Tsamalaidze, Zviadi

AU - Ukai, Mifuyu

AU - Yamamoto, Takeshi O.

PY - 2019/7/25

Y1 - 2019/7/25

N2 - 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.

AB - 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.

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U2 - 10.1063/1.5118383

DO - 10.1063/1.5118383

M3 - Conference contribution

AN - SCOPUS:85070317586

T3 - AIP Conference Proceedings

BT - 13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018

A2 - Schumacher, Reinhard

A2 - Tang, Liguang

PB - American Institute of Physics Inc.

T2 - 13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018

Y2 - 24 June 2018 through 29 June 2018

ER -