Dynamics of strangeness and collective flows in heavy-ion collisions near threshold energies
文献类型：期刊论文
| 作者 | Feng, Zhao-Qing
|
| 刊名 | NUCLEAR PHYSICS A
 |
| 出版日期 | 2013-12-02 |
| 卷号 | 919页码:32-45 |
| 关键词 | Lqmd Model Strange Particles Optical Potential Symmetry Energy |
| ISSN号 | 0375-9474 |
| DOI | 10.1016/j.nuclphysa.2013.10.005 |
| 文献子类 | Article |
| 英文摘要 | Strangeness (K-0,K-+, Lambda and Sigma(-,0,+)) production in heavy-ion collisions near threshold energies has been investigated within the Lanzhou quantum molecular dynamics (LQMD) transport model. The kaon (antikaon)-nucleon and hyperon-nucleon potentials in dense nuclear matter are implemented in the model, which are computed from the chiral perturbation approach and the relativistic mean-field model, respectively. It is found that the in-medium potentials change the structure of transverse flow, and also affect the rapidity distributions and the inclusive spectra for strangeness production. The local temperature of the fire ball extracted from the kaon spectra of inclusive invariant cross sections is influenced by the kaon-nucleon potential. The stiffness of nuclear symmetry energy and the kaon-nucleon potential by distinguishing isospin effect play a significant role on the ratio of K-0/K+, in particular at the subthreshold energies. The ratio of Sigma(-)/Sigma(+) depends on the high-density symmetry energy, in which the Sigma-nucleon potential has a neglectable contribution on the isospin ratio. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS关键词 | SUBTHRESHOLD KAON PRODUCTION ; NEUTRON-STAR DENSITIES ; NUCLEAR-EQUATION ; ANTIKAON PRODUCTION ; K+ PRODUCTION ; SKYRME PARAMETRIZATION ; FUSION REACTIONS ; COULOMB BARRIER ; RESONANCE MODEL ; SIS ENERGIES |
| 资助项目 | Chinese Academy of Sciences[KJCX2-EW-N01] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000327826900003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.186/handle/113462/48511]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Feng, Zhao-Qing |
| 作者单位 | Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Zhao-Qing. Dynamics of strangeness and collective flows in heavy-ion collisions near threshold energies[J]. NUCLEAR PHYSICS A,2013,919:32-45. |
| APA | Feng, Zhao-Qing.(2013).Dynamics of strangeness and collective flows in heavy-ion collisions near threshold energies.NUCLEAR PHYSICS A,919,32-45. |
| MLA | Feng, Zhao-Qing."Dynamics of strangeness and collective flows in heavy-ion collisions near threshold energies".NUCLEAR PHYSICS A 919(2013):32-45. |
入库方式： OAI收割
来源：近代物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。