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

被引：14

作者：

Nagae, Tomofumi ^{[1
]}

Ahn, Jung Keun ^{[3
]}

Akazawa, Yuya ^{[4
]}

Aoki, Kanae ^{[4
]}

Botta, Elena ^{[5
,6
]}

Ekawa, Hiroyuki ^{[1
,2
]}

Evtoukhovitch, Petr ^{[8
]}

Feliciello, Alessandro ^{[5
]}

Fujita, Manami ^{[7
]}

Gogami, Toshiyuki ^{[7
]}

Hasegawa, Shoichi ^{[2
]}

Hasegawa, Tomoyuki ^{[9
]}

Hayakawa, Shuhei ^{[2
,10
]}

Hayakawa, Tomonori ^{[10
]}

Honda, Ryotaro ^{[7
]}

Hosomi, Kenji ^{[2
]}

Ichikawa, Yudai ^{[2
]}

Imai, Ken'ichi ^{[2
]}

Jung, Wooseung ^{[3
]}

Kanatsuki, Shunsuke ^{[1
]}

Kim, Shinhyung ^{[3
]}

Kinbara, Sinji ^{[2
,11
]}

Kobayashi, Kazuya ^{[10
]}

Lee, Jaeyong ^{[12
]}

Marcello, Simonetta ^{[5
,6
]}

Miwa, Koji ^{[7
]}

Moon, Taejin ^{[12
]}

Nakada, Yoshiyuki ^{[10
]}

Nakagawa, Manami ^{[10
]}

Nanamura, Takuya ^{[1
]}

Naruki, Megumi ^{[1
,2
]}

Sakaguchi, Atsushi ^{[10
]}

Sako, Hiroyuki ^{[2
]}

Sato, Susumu ^{[2
]}

Sasaki, Yuki ^{[7
]}

Shirotori, Kotaro ^{[13
]}

Sugimura, Hitoshi ^{[4
]}

Takahashi, Toshiyuki ^{[4
]}

Tamura, Hirokazu ^{[7
]}

Tanida, Kiyoshi ^{[2
]}

Tsamalaidze, Zviadi ^{[8
]}

Ukai, Mifuyu ^{[4
]}

Yamamoto, Takeshi. O. ^{[4
]}

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[2] Japan Atom Energy Agcy, ASRC, Ibaraki 3191195, Japan

[3] Korea Univ, Dept Phys, Seoul 136713, South Korea

[4] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan

[5] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

[6] Univ Torino, Dipartimento Fis, I-10125 Turin, Italy

[7] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[8] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[9] Kitasato Univ, Allied Hlth Sci, Sagamihara, Kanagawa 2520373, Japan

[10] Osaka Univ, Dept Phys, 1-1 Yanagido, Osaka 5600043, Japan

[11] Gifu Univ, Dept Phys, 1-1 Yanagido, Gifu 5011193, Japan

[12] Seoul Natl Univ, Dept Phys & Astron, Seoul 151747, South Korea

[13] Osaka Univ, Res Ctr Nucl Phys RCNP, Osaka 5670047, Japan

来源：

13TH INTERNATIONAL CONFERENCE ON HYPERNUCLEAR AND STRANGE PARTICLE PHYSICS (HYP2018) | 2019年 / 2130卷

关键词：

D O I：

10.1063/1.5118383

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

For the full understanding of baryon-baryon interactions in flavor SU(3), the Xi N interaction is the last missing piece of information. So far, we have revealed the Lambda N interaction to be attractive (U-A approximate to 30 MeV), and Sigma N interaction to be repulsive in the medium to heavy mass-number region. The Lambda Lambda bonding energy is weakly attractive. While we have a few experimental observations suggesting the Xi N 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 Xi hypernuclei by observing bound-state peaks are strongly awaited. In this report, a new preliminary result on the missing-mass spectrum of a C-12(K-, K+) reaction, which strongly suggests the existence of Xi-hypernuclear bound states, is presented.

引用

页数：9

共 13 条

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