Low-lying Omega states with negative parity in an extended quark model with Nambu-Jona-Lasinio interaction

doi:10.1103/PhysRevC.89.055209

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	Low-lying Omega states with negative parity in an extended quark model with Nambu-Jona-Lasinio interaction
	An CS(安春生); Zou BS(邹冰松); An, CS; Zou, BS
	2014
发表期刊	PHYSICAL REVIEW C
卷号	89 期号:5 页码:55209
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.
学科领域	Physics
DOI	10.1103/PhysRevC.89.055209
收录类别	SCI
WOS记录号	WOS:000338040000006
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ihep.ac.cn/handle/311005/225258
专题	理论物理室
推荐引用方式 GB/T 7714	An CS,Zou BS,An, CS,et al. 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.
APA	安春生,邹冰松,An, CS,&Zou, BS.(2014).Low-lying Omega states with negative parity in an extended quark model with Nambu-Jona-Lasinio interaction.PHYSICAL REVIEW C,89(5),55209.
MLA	安春生,et al."Low-lying Omega states with negative parity in an extended quark model with Nambu-Jona-Lasinio interaction".PHYSICAL REVIEW C 89.5(2014):55209.

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