Sigma(-)/Sigma(+) ratio as a candidate for probing the density dependence of the symmetry potential at high nuclear densities

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	Sigma(-)/Sigma(+) ratio as a candidate for probing the density dependence of the symmetry potential at high nuclear densities
	Li, Z; Li, Q; Zhao, E; Gupta, RK; Li, Q , Univ Frankfurt, FIAS, Max Von Laue Str 1, D-60438 Frankfurt, Germany.
刊名	PHYSICAL REVIEW C
	2005
卷号	71 期号:5 页码:-
关键词	Heavy-ion Collisions Neutron-stars Matter Hypernuclei Energies Isospin State
ISSN号	0556-2813
英文摘要	Based on the UrQMD (ultrarelativistic quantum molecular dynamics) model, we have investigated the influence of the symmetry potential on the negatively and positively charged pi and Sigma hyperon production ratios in heavy ion collisions at the SIS (SchwerIonen Synchrotron) energies. We find that, in addition to pi(-)/pi(+) ratio, the Sigma(-)/Sigma(+) ratio can be taken as a sensitive probe for investigating the density dependence of the symmetry potential of nuclear matter at high densities (1-4 times normal baryon density). This sensitivity of the symmetry potential to both the pi(-)/pi(+) and Sigma(-)/Sigma(+) ratios is found to depend strongly on the incident beam energy. Furthermore, the Sigma(-)/Sigma(+) ratio is shown to carry the information about the isospin-dependent part of the Sigma hyperon single-particle potential.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000229440200056
公开日期	2012-08-30
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/13831]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Li, Q , Univ Frankfurt, FIAS, Max Von Laue Str 1, D-60438 Frankfurt, Germany.
推荐引用方式 GB/T 7714	Li, Z,Li, Q,Zhao, E,et al. Sigma(-)/Sigma(+) ratio as a candidate for probing the density dependence of the symmetry potential at high nuclear densities[J]. PHYSICAL REVIEW C,2005,71(5):-.
APA	Li, Z,Li, Q,Zhao, E,Gupta, RK,&Li, Q , Univ Frankfurt, FIAS, Max Von Laue Str 1, D-60438 Frankfurt, Germany..(2005).Sigma(-)/Sigma(+) ratio as a candidate for probing the density dependence of the symmetry potential at high nuclear densities.PHYSICAL REVIEW C,71(5),-.
MLA	Li, Z,et al."Sigma(-)/Sigma(+) ratio as a candidate for probing the density dependence of the symmetry potential at high nuclear densities".PHYSICAL REVIEW C 71.5(2005):-.