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题名: Spin-orbit force of hyperon-nucleon interaction in the chiral SU(3) quark model
作者: Yang, S ;  Shen, PN ;  Zhang, ZY ;  Yu, YW
刊名: NUCLEAR PHYSICS A
出版日期: 1998
卷号: 635, 期号:40910, 页码:146-162
关键词: CHANNEL
学科分类: Physics
通讯作者: Yang, S , Acad Sinica, Inst High Energy Phys, POB 9184, Beijing 100039, Peoples R China.
部门归属: Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China; China Ctr Adv Sci & Technol, World Lab, Beijing 100080, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: The spin-orbit (LS) force of the hyperon-nucleon interaction is studied in the chiral SU(3) quark model. The symmetric LS terms from the one gluon exchange (OGE) and the scalar nonet exchange (OSE) are taken into account. It is shown that two different treatments (the LS coupling from either OGE or OSE being artificially enhanced in order to reproduce the P-3(J) phase shifts of the nucleon-nucleon scattering) lead to very similar LS couplings in the Sigma N(I = 3/2) channel but give quite different results in the Lambda N - Sigma N(I = 1/2) coupled-channel system. A prominent resonance occurs in the P-1(1) state of the Lambda N channel mainly due to the stronger LS(-) couplings in the Lambda N - Sigma N(I = 1/2) coupled-channel system in the OGE enhanced case. Comparatively the Lambda N P-1(1) phase shift curve exhibits a rather smooth behaviour in the OSE enhanced case. Comparing our theoretical results with the experimental data available, and considering the requirement of the baryon spectrum, one can deduce that a stronger color-independent LS coupling is preferred in the chiral quark model. (C) 1998 Elsevier Science B.V.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000074519900007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12305
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Yang, S,Shen, PN,Zhang, ZY,et al. Spin-orbit force of hyperon-nucleon interaction in the chiral SU(3) quark model[J]. NUCLEAR PHYSICS A,1998,635(40910):146-162.
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