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Li, Q; Li, Z; Zhao, E; Gupta, RK; Li, Q , Univ Frankfurt, FIAS, Max Von Laue Str 1, D-60438 Frankfurt, Germany.
Sigma(-)/Sigma(+) ratio as a candidate for probing the density dependence of the symmetry potential at high nuclear densities
Source PublicationPHYSICAL REVIEW C
KeywordHeavy-ion Collisions Neutron-stars Matter Hypernuclei Energies Isospin State
AbstractBased 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.
2005
ISSN0556-2813
Volume71Issue:5Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:47[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13831
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLi, Q , Univ Frankfurt, FIAS, Max Von Laue Str 1, D-60438 Frankfurt, Germany.
Recommended Citation
GB/T 7714
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):-.
APA Li, Q,Li, Z,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, Q,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):-.
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