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题名: Sigma(-)/Sigma(+) ratio as a candidate for probing the density dependence of the symmetry potential at high nuclear densities
作者: Li, Q ;  Li, Z ;  Zhao, E ;  Gupta, RK
刊名: PHYSICAL REVIEW C
出版日期: 2005
卷号: 71, 期号:5, 页码:-
关键词: HEAVY-ION COLLISIONS ;  NEUTRON-STARS ;  MATTER ;  HYPERNUCLEI ;  ENERGIES ;  ISOSPIN ;  STATE
学科分类: Physics
通讯作者: Li, Q , Univ Frankfurt, FIAS, Max Von Laue Str 1, D-60438 Frankfurt, Germany.
部门归属: Univ Frankfurt, FIAS, D-60438 Frankfurt, Germany; China Inst Atom Energy, Beijing 102413, Peoples R China; Ctr Theoret Nucl Phys, Natl Lab Lanzhou Heavy Ion Accelerator, Lanzhou 730000, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Punjabi Univ, Dept Phys, Chandigarh 160014, India
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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000229440200056
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13831
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Li, Q,Li, Z,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):-.
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