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Spin-orbit force of hyperon-nucleon interaction in the chiral SU(3) quark model
Yang S(杨树); Shen PN(沈彭年); Zhang ZY(张宗烨); Yu YW(余友文); Yang, S; Shen, PN; Zhang, ZY; Yu, YW
1998
发表期刊NUCLEAR PHYSICS A
卷号635期号:1-2页码:#REF!
通讯作者Yang, S (reprint author), Acad Sinica, Inst High Energy Phys, POB 9184, Beijing 100039, Peoples R China.
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.
文章类型Article
关键词spin-orbit force hyperon-nucleon interaction quark model chiral symmetry
学科领域Physics
DOI10.1016/S0375-9474(98)00190-0
收录类别SCI
WOS类目Physics, Nuclear
WOS记录号WOS:000074519900007
引用统计
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.ihep.ac.cn/handle/311005/226498
专题院士
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(1-2):#REF!.
APA 杨树.,沈彭年.,张宗烨.,余友文.,Yang, S.,...&Yu, YW.(1998).Spin-orbit force of hyperon-nucleon interaction in the chiral SU(3) quark model.NUCLEAR PHYSICS A,635(1-2),#REF!.
MLA 杨树,et al."Spin-orbit force of hyperon-nucleon interaction in the chiral SU(3) quark model".NUCLEAR PHYSICS A 635.1-2(1998):#REF!.
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