Understanding light scalar meson by color-magnetic wave function in QCD sum rule
文献类型：期刊论文
| 作者 | Pang, Y ; Yan, ML |
| 刊名 | EUROPEAN PHYSICAL JOURNAL A
 |
| 出版日期 | 2009 |
| 卷号 | 42期号:2页码:195 |
| 关键词 | 4-QUARK STATES MULTIQUARK HADRONS GLUON CONDENSATE BOUND-STATE QUARK-MODEL TETRAQUARK PHYSICS MASSES |
| ISSN号 | 1434-6001 |
| 通讯作者 | Pang, Y (reprint author), Chinese Acad Sci, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | In this paper, we study the 0(+) nonet mesons as tetraquark states with interpolating currents inspired by the color-magnetic wave function. This wave function is the eigenfunction of an effective color-magnetic Hamiltonian with the lowest eigenvalue, meaning that the state depicted by this wave function is the most stable one and is the most probable to be observed in experiments. We perform an OPE calculation up to dimension-eight condensates and find that the best QCD sum rule is achieved when the current inspired by the color-magnetic wave function is a proper mixture of the tensor and pseudoscalar diquark-antidiquark bound states. Compared with previous results, to sigma(600) and kappa(800), our results appear better, due to larger pole contribution. The direct instanton contributions are also considered, which yields a consistent result with previous OPE results. Finally, we also discuss the eta' problem as a possible six-quark state. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46396]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Pang, Y,Yan, ML. Understanding light scalar meson by color-magnetic wave function in QCD sum rule[J]. EUROPEAN PHYSICAL JOURNAL A,2009,42(2):195. |
| APA | Pang, Y,&Yan, ML.(2009).Understanding light scalar meson by color-magnetic wave function in QCD sum rule.EUROPEAN PHYSICAL JOURNAL A,42(2),195. |
| MLA | Pang, Y,et al."Understanding light scalar meson by color-magnetic wave function in QCD sum rule".EUROPEAN PHYSICAL JOURNAL A 42.2(2009):195. |
入库方式： OAI收割
来源：物理研究所
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