Role of five-quark components in radiative and strong decays of the Lambda(1405) resonance
文献类型：期刊论文
| 作者 | Saghai, B.1; An, C. S.1; Yuan, S. G.2; He, Jun2
|
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 81期号:4页码:13 |
| ISSN号 | 0556-2813 |
| DOI | 10.1103/PhysRevC.81.045203 |
| 英文摘要 | Within an extended chiral constituent quark model, the three- and five-quark structure of the S-01 resonance Lambda(1405) is investigated. Helicity amplitudes for electromagnetic decays [Lambda(1405)->Lambda(1116)gamma, Sigma(1194)gamma] and transition amplitudes for strong decays [Lambda(1405)->Sigma(1194)pi, K- p] are derived, as well as the relevant decay widths. The experimental value for the strong decay width, Gamma(Lambda(1405)->(Sigma pi)degrees) = 50 +/- 2MeV, is well reproduced with about 50% of a five-quark admixture in the Lambda(1405). Important effects owing to the configuration mixing among Lambda P-2(1)A, Lambda P-2(8)M, and Lambda P-4(8)M are found. In addition, transitions between the three- and the five-quark components in the baryons turn out to be significant in both radiative and strong decays of the Lambda(1405) resonance. |
| WOS关键词 | K-P ATOM ; QUARK-MODEL ; ELECTROMAGNETIC DECAYS ; QQQQ(Q)OVER-BAR COMPONENTS ; NUCLEON INTERACTION ; HYPERON RESONANCES ; EXCITED HYPERONS ; CHIRAL DYNAMICS ; LATTICE QCD ; BARYONS |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000277209500072 |
| 出版者 | AMER PHYSICAL SOC |
| 公开日期 | 2011-04-20 |
| 源URL | [http://ir.imp.cas.cn/handle/113462/7893]  |
| 专题 | 近代物理研究所_近代物理研究所知识存储（2010之前） |
| 通讯作者 | An, C. S. |
| 作者单位 | 1.CEA Saclay, DSM Irfu, Inst Rech Lois Fondamentales Univers, F-91191 Gif Sur Yvette, France 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Saghai, B.,An, C. S.,Yuan, S. G.,et al. Role of five-quark components in radiative and strong decays of the Lambda(1405) resonance[J]. PHYSICAL REVIEW C,2010,81(4):13. |
| APA | Saghai, B.,An, C. S.,Yuan, S. G.,&He, Jun.(2010).Role of five-quark components in radiative and strong decays of the Lambda(1405) resonance.PHYSICAL REVIEW C,81(4),13. |
| MLA | Saghai, B.,et al."Role of five-quark components in radiative and strong decays of the Lambda(1405) resonance".PHYSICAL REVIEW C 81.4(2010):13. |
入库方式： OAI收割
来源：近代物理研究所
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