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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.
1998
发表期刊NUCLEAR PHYSICS A
ISSN0375-9474
卷号635期号:40910页码:146-162
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.
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
关键词Channel
学科领域Physics
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收录类别SCI
WOS记录号WOS:000074519900007
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被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12305
专题理论物理所SCI论文
通讯作者Yang, S , Acad Sinica, Inst High Energy Phys, POB 9184, Beijing 100039, Peoples R China.
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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.
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