Diquark and light four-quark states
文献类型：期刊论文
| 作者 | Zhang, A; 黄涛(理) ; Huang, T; Steele, TG
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2007 |
| 卷号 | 76期号:3页码:36004 |
| 通讯作者 | Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada |
| 英文摘要 | Four-quark states with different internal clusters are discussed within the constituent quark model. It is pointed out that the diquark concept is not meaningful in the construction of a tetraquark interpolating current in the QCD sum-rule approach, and hence existing sum-rule studies of four-quark states are incomplete. An updated QCD sum-rule determination of the properties of diquark clusters is then used as input for the constituent quark model to obtain the masses of light 0(++) tetraquark states (i.e. a bound state of two diquark clusters). The results support the identification of sigma(600), f(0)(980), and a(0)(980) as the 0(++) light tetraquark states, and seem to be inconsistent with the tetraquark state interpretation of the new BES observations of the near-threshold p (p) over bar enhancements, X(1835) and X(1812), with the possible exception that X(1576) may be an exotic first orbital excitation of f(0)(980) or a(0)(980). |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 研究领域[WOS] | Astronomy & Astrophysics ; Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000249155700056 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/240588]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zhang, A,Huang T,Huang, T,et al. Diquark and light four-quark states[J]. PHYSICAL REVIEW D,2007,76(3):36004. |
| APA | Zhang, A,黄涛,Huang, T,&Steele, TG.(2007).Diquark and light four-quark states.PHYSICAL REVIEW D,76(3),36004. |
| MLA | Zhang, A,et al."Diquark and light four-quark states".PHYSICAL REVIEW D 76.3(2007):36004. |
入库方式： OAI收割
来源：高能物理研究所
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