Spin-orbit force of hyperon-nucleon interaction in the chiral SU(3) quark model
文献类型：期刊论文
| 作者 | 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
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| 刊名 | NUCLEAR PHYSICS A
 |
| 出版日期 | 1998 |
| 卷号 | 635期号:1-2页码:#REF! |
| 关键词 | spin-orbit force hyperon-nucleon interaction quark model chiral symmetry |
| 通讯作者 | Yang, S (reprint author), Acad Sinica, Inst High Energy Phys, POB 9184, Beijing 100039, 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. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear |
| 收录类别 | SCI |
| WOS记录号 | WOS:000074519900007 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/226498]  |
| 专题 | 高能物理研究所_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!. |
入库方式： OAI收割
来源：高能物理研究所
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