Spin-orbit force of hyperon-nucleon interaction in the chiral SU(3) quark model

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	Spin-orbit force of hyperon-nucleon interaction in the chiral SU(3) quark model
	Yang, S; Shen, PN; Zhang, ZY; Yu, YW; Yang, S , Acad Sinica, Inst High Energy Phys, POB 9184, Beijing 100039, Peoples R China.
刊名	NUCLEAR PHYSICS A
	1998
卷号	635 期号:40910 页码:146-162
关键词	Channel
ISSN号	0375-9474
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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000074519900007
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/12305]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Yang, S , Acad Sinica, Inst High Energy Phys, POB 9184, Beijing 100039, Peoples R China.
推荐引用方式 GB/T 7714	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.
APA	Yang, S,Shen, PN,Zhang, ZY,Yu, YW,&Yang, S , Acad Sinica, Inst High Energy Phys, POB 9184, Beijing 100039, Peoples R China..(1998).Spin-orbit force of hyperon-nucleon interaction in the chiral SU(3) quark model.NUCLEAR PHYSICS A,635(40910),146-162.
MLA	Yang, S,et al."Spin-orbit force of hyperon-nucleon interaction in the chiral SU(3) quark model".NUCLEAR PHYSICS A 635.40910(1998):146-162.