Quark mean-field model for single and double Lambda and Xi hypernuclei

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	Quark mean-field model for single and double Lambda and Xi hypernuclei
	Hu, J. N. ; Li, A. ; Shen, H. ; Toki, H. ; Li A(李昂)
刊名	http://dx.doi.org/10.1093/ptep/ptt119
	2014
关键词	HYPERON-HYPERON INTERACTION DOUBLE HYPERFRAGMENT PHYSICS
英文摘要	CPSC [2012M520100]; Fundamental Research Funds for the Central Universities; The study of hypernuclei in the quark mean-field model are extended from single-Lambda hypernuclei to double-Lambda hypernuclei as well as Xi hypernuclei (double strangeness nuclei), with a broken SU(3) symmetry for the quark confinement potential. The strength of the potential for u, d quarks is constrained by the properties of finite nuclei, while that for the s quark is fixed by the single Lambda-nucleus potential at the nuclear saturation density, which has a slightly different value. Compared to our previous work, we find that the introduction of such symmetry breaking improves efficiently the description of the single-Lambda energies for a wide range of mass regions, which demonstrates the importance of this effect on the study of hypernuclei. Predictions for double-Lambda hypernuclei and Xi hypernuclei are then made, and compared with some of the available experiential double-Lambda hypernuclei data and other model calculations. The consistency of our results with the available double-Lambda hypernucleus is found to be surprisingly good. Also, there is generally a bound state for Xi(0) hypernuclei with both light and heavy core nuclei in our model.
语种	英语
出版者	OXFORD UNIV PRESS INC
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/92098]
专题	物理技术－已发表论文
推荐引用方式 GB/T 7714	Hu, J. N.,Li, A.,Shen, H.,et al. Quark mean-field model for single and double Lambda and Xi hypernuclei[J]. http://dx.doi.org/10.1093/ptep/ptt119,2014.
APA	Hu, J. N.,Li, A.,Shen, H.,Toki, H.,&李昂.(2014).Quark mean-field model for single and double Lambda and Xi hypernuclei.http://dx.doi.org/10.1093/ptep/ptt119.
MLA	Hu, J. N.,et al."Quark mean-field model for single and double Lambda and Xi hypernuclei".http://dx.doi.org/10.1093/ptep/ptt119 (2014).