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K介子核团簇——粒子与核物理的新范式。

Kaonic nuclear clusters- a new paradigm of particle and nuclear physics.

作者信息

Akaishi Yoshinori, Yamazaki Toshimitsu

机构信息

High-Energy Accelerator Research Organization (KEK), Tsukuba, Japan.

Department of Physics, The University of Tokyo, Tokyo, Japan.

出版信息

Proc Jpn Acad Ser B Phys Biol Sci. 2024;100(10):607-614. doi: 10.2183/pjab.100.039.

DOI:10.2183/pjab.100.039
PMID:39662945
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11704456/
Abstract

Λ = Λ(1405) plays an essential role in the formation of kaonic nuclear clusters (KNC). The simplest KNC, Kpp, has the structure Λp = (Kp)p, in which a real kaon migrates between two nucleons, mediating super-strong Λp attraction. Production data of Kpp have been accumulated by DISTO, J-PARC E27 and J-PARC E15 experiments. For KKpp the attractive covalent bond of ΛΛ is doubly enhanced compared to the Λp one. Consequently, Λ multiplet, (Λ), with m(m－1)/2 bonds becomes more stable than its corresponding neutron aggregate, (n), at m = 8－12, suggesting the possible existence of stable Λ matter. A long-lived strangelet of (Λ) is presumed as a precursor. The production of KKpp by high-energy pp or heavy-ion collisions is awaited as a doorway to so-far unknown Λ matter.

摘要

Λ = Λ(1405)在奇异原子核团簇（KNC）的形成中起着至关重要的作用。最简单的KNC，Kpp，具有结构Λp = (Kp)p，其中一个实介子在两个核子之间迁移，介导超强的Λp吸引力。DISTO、日本质子加速器研究中心（J-PARC）的E27和E15实验已经积累了Kpp的产生数据。对于KKpp，与Λp键相比，ΛΛ的吸引共价键增强了两倍。因此，具有m(m－1)/2个键的Λ多重态(Λ)在m = 8 - 12时比其相应的中子聚集体(n)更稳定，这表明可能存在稳定的Λ物质。一个长寿命的(Λ)奇异粒子被认为是其前驱体。高能质子-质子或重离子碰撞产生KKpp被视为通向迄今未知的Λ物质的途径。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/8c82e397c641/pjab-100-607-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/d98ad404e848/pjab-100-607-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/c8c38a15fc80/pjab-100-607-g006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/a079f7047161/pjab-100-607-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/8c82e397c641/pjab-100-607-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/d98ad404e848/pjab-100-607-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/526c4b3dfd78/pjab-100-607-g002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/13641573f29f/pjab-100-607-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/c8c38a15fc80/pjab-100-607-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/ab7ea862d0c1/pjab-100-607-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/a079f7047161/pjab-100-607-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1797/11704456/8c82e397c641/pjab-100-607-g009.jpg

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本文引用的文献

1
Lattice QCD evidence that the Λ(1405) resonance is an antikaon-nucleon molecule.格点量子色动力学证据表明 Λ(1405)共振是一个反西格玛介子-核子分子。
Phys Rev Lett. 2015 Apr 3;114(13):132002. doi: 10.1103/PhysRevLett.114.132002. Epub 2015 Apr 1.
2
Strong binding and shrinkage of single and double (K) nuclear systems (K(-)pp, K(-)ppn, K(-)K(-)p and K(-)K(-)pp) predicted by Faddeev-Yakubovsky calculations.Faddeev-Yakubovsky 计算预测的单核和双核（K）体系（K(-)pp、K(-)ppn、K(-)K(-)p 和 K(-)K(-)pp）的强束缚和收缩。
Proc Jpn Acad Ser B Phys Biol Sci. 2013;89(9):418-37. doi: 10.2183/pjab.89.418.
3
Super strong nuclear force caused by migrating K̄ mesons - Revival of the Heitler-London-Heisenberg scheme in kaonic nuclear clusters.
由迁移的反K介子引起的超强核力——海特勒-伦敦-海森堡方案在奇异介子核团簇中的复兴
Proc Jpn Acad Ser B Phys Biol Sci. 2007 Jun;83(5):144-50. doi: 10.2183/pjab.83.144.
4
Indication of a deeply bound and compact K- pp state formed in the pp- -> pLambdaK+ reaction at 2.85 GeV.在 2.85GeV 的 pp- -> pLambdaK+ 反应中形成的深束缚且紧凑的 K-pp 态的迹象。
Phys Rev Lett. 2010 Apr 2;104(13):132502. doi: 10.1103/PhysRevLett.104.132502. Epub 2010 Apr 1.
5
Faddeev calculation of a K- pp quasibound state.K-pp 准束缚态的法捷耶夫计算。
Phys Rev Lett. 2007 Feb 23;98(8):082301. doi: 10.1103/PhysRevLett.98.082301. Epub 2007 Feb 22.
6
Evidence for a kaon-bound state K(-)pp produced in K(-) absorption reactions at rest.在静止的K⁻吸收反应中产生的K⁻pp介子束缚态的证据。
Phys Rev Lett. 2005 Jun 3;94(21):212303. doi: 10.1103/PhysRevLett.94.212303.
7
Fully coupled channel approach to doubly strange s-shell hypernuclei.双奇异s壳层超核的全耦合道方法。
Phys Rev Lett. 2005 May 27;94(20):202502. doi: 10.1103/PhysRevLett.94.202502.