Missing-Mass Measurement of the 12C(K-, K+) Reaction at 1.8 GeV/c with the Superconducting Kaon Spectrometer

被引：0

作者：

Ichikawa, Yudai ^{[1
,2
]}

Ahn, Jung Keun ^{[3
]}

Akazawa, Yuya ^{[4
]}

Aoki, Kanae ^{[4
]}

Botta, Elena ^{[5
,6
]}

Ekawa, Hiroyuki ^{[7
]}

Evtoukhovitch, Petr ^{[8
]}

Feliciello, Alessandro ^{[5
]}

Fujita, Manami ^{[2
]}

Gogami, Toshiyuki ^{[9
]}

Hasegawa, Shoichi ^{[2
]}

Hasegawa, Tomoyuki ^{[10
]}

Hayakawa, Shuhei ^{[1
]}

Hayakawa, Tomonori ^{[11
]}

Honda, Ryotaro ^{[4
]}

Hosomi, Kenji ^{[2
]}

Imai, Ken'ichi ^{[2
]}

Jung, Wooseung ^{[3
]}

Kanatsuki, Shunsuke ^{[9
]}

Kim, Shin Hyung ^{[12
]}

Kinbara, Shinji ^{[13
]}

Kobayashi, Kazuya ^{[11
]}

Lee, Jaeyong ^{[14
]}

Marcello, Simonetta ^{[5
,6
]}

Miwa, Koji ^{[1
]}

Moon, Taejin ^{[14
]}

Nagae, Tomofumi ^{[9
]}

Nakada, Yoshiyuki ^{[11
]}

Nakagawa, Manami ^{[7
]}

Nanamura, Takuya ^{[2
]}

Naruki, Megumi ^{[9
]}

Sakaguchi, Atsushi ^{[11
]}

Sako, Hiroyuki ^{[2
]}

Sasaki, Yuki ^{[1
]}

Sato, Susumu ^{[2
]}

Shirotori, Kotaro ^{[15
]}

Sugimura, Hitoshi ^{[16
]}

Takahashi, Toshiyuki ^{[3
]}

Tamura, Hirokazu ^{[1
,2
]}

Tanida, Kiyoshi ^{[2
]}

Tsamalaidze, Zviadi ^{[8
]}

Ukai, Mifuyu ^{[4
]}

Yamamoto, Takeshi O. ^{[2
]}

机构：

[1] Tohoku Univ, Dept Phys, Sendai 9808578, Japan

[2] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[3] Korea Univ, Dept Phys, Seoul 02841, South Korea

[4] High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies IPNS, Tsukuba 3050801, Japan

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

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

[7] RIKEN, High Energy Nucl Phys Lab, Wako 3510198, Japan

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

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

[10] Kitasato Univ, Allied Hlth Sci, Sagamihara 2520373, Japan

[11] Osaka Univ, Dept Phys, Osaka 5600043, Japan

[12] Kyungpook Natl Univ, Dept Phys, Daegu 41566, South Korea

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

[14] Seoul Natl Univ, Dept Phys & Astron, Seoul 08826, South Korea

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

[16] High Energy Accelerator Res Org KEK, Accelerator Lab, Tsukuba 3050801, Japan

来源：

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS | 2024年 / 2024卷 / 09期

基金：

日本学术振兴会;

关键词：

LAMBDA-LAMBDA; N-XI; XI(-); HYPERNUCLEI;

D O I：

10.1093/ptep/ptae133

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We performed a measurement of the inclusive missing-mass spectrum of the C-12(K-,K+) reaction at an incident beam momentum of 1.8 GeV/c. This measurement was carried out by using the Superconducting Kaon Spectrometer (SKS) and the K1.8 beamline spectrometer at the Hadron Experimental Facility in J-PARC. From the missing-mass of the 12C(K-,K+) reaction, the binding energy of a Xi- hyperon in a core 11B nucleus, B Xi(-), can be calculated. Our experimental setup yielded a good energy resolution of 8.2 MeV (full width at half maximum), which allowed us to observe significant enhancements in the proximity of the Xi Be-12 production threshold region. In order to extract information from the missing-mass spectrum, we employed several fitting parameters assumptions. A good agreement with the spectrum shape was obtained by adding two Gaussian functions, with the constant experimental resolution for the Xi-hypernuclear states, to the background distribution. The peak positions were obtained to be B Xi-=8.9 +/- 1.4 (stat.) (+3.8)(-3.1) (syst.) MeV and B Xi-=-2.4 +/- 1.3 (stat.) (+2.8)(-1.2) (syst.) MeV. Another model assumption, one Breit-Wigner function with B Xi-=-2.7 +/- 2.2 (stat.) (+0.5)(-0.7) (syst.) MeV and Gamma=4.1 +/- 2.1 (stat.) (+1.2)(-0.7) (syst.) MeV, also yielded a similar chi(2) value.

引用

页数：13

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