Sigma(-)/Sigma(+) ratio as a candidate for probing the density dependence of the symmetry potential at high nuclear densities
文献类型：期刊论文
| 作者 | 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
 |
| 出版日期 | 2005 |
| 卷号 | 71期号:5页码:- |
| ISSN号 | 0556-2813 |
| 关键词 | Heavy-ion Collisions Neutron-stars Matter Hypernuclei Energies Isospin State |
| 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 |
| 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):-. |
入库方式： OAI收割
来源：理论物理研究所
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