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题名: Low-lying Omega states with negative parity in an extended quark model with Nambu-Jona-Lasinio interaction
作者: An, CS;  Zou, BS
刊名: PHYSICAL REVIEW C
出版日期: 2014
卷号: 89, 期号:5, 页码:55209
关键词: HYPERFINE INTERACTIONS ;  DYNAMICAL MODEL ;  SUPERCONDUCTIVITY ;  BARYONS ;  FORCES ;  ANALOGY ;  QCD
学科分类: Physics
DOI: 10.1103/PhysRevC.89.055209
通讯作者: An, CS (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
部门归属: [An, C. S.
英文摘要: Here we investigate mixing of the low-lying three- and five-quark Omega states with spin-parity quantum numbers 1/2(-) and 3/2(-), employing the quark-antiquark creation triggered by Nambu-Jona-Lasinio (NJL) interaction. Wave functions of the three- and five-quark configurations are constructed by using the extended constituent quark model, within which the hyperfine interaction between quarks is also taken to be the NJL-induced one. Numerical results show that the NJL-interaction-induced pair creation results in vanishing mixing between three- and five- quark Omega configurations with spin- parity 1/2(-), but mixing between three- and five-quark 3/2 Omega states should be very strong. The mixing decreases energy of the lowest 3/2(-)Omega state to be 1785 +/- 25 MeV, which is lower than energy of the lowest 1/2(-) state in this model. This is consistent with our previous predictions within the instanton-induced quark-antiquark creation model.
资助者: National Natural Science Foundation of China [11205164, 11035006, 11121092, 11261130311]; DFG [CRC110]; NSFC [CRC110]; Chinese Academy of Sciences [KJCX2-EW-N01]; Ministry of Science and Technology of China [2009CB825200]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000338040000006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15753
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
An, CS,Zou, BS. Low-lying Omega states with negative parity in an extended quark model with Nambu-Jona-Lasinio interaction[J]. PHYSICAL REVIEW C,2014,89(5):55209.
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