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题名: Effects of nuclear symmetry energy and in-medium NN cross section in heavy-ion collisions at beam energies below the pion production threshold
作者: Guo, WM ;  Yong, GC ;  Zuo, W
刊名: PHYSICAL REVIEW C
出版日期: 2014
卷号: 90, 期号:4, 页码:44605
关键词: NEUTRON-STARS ;  SCATTERING ;  PHYSICS
学科分类: Physics
DOI: 10.1103/PhysRevC.90.044605
通讯作者: Guo, WM (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
部门归属: [Guo, Wen-Mei ;  Yong, Gao-Chan ;  Zuo, Wei] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China ;  [Guo, Wen-Mei] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China ;  [Guo, Wen-Mei] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ;  [Yong, Gao-Chan ;  Zuo, Wei] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China ;  [Yong, Gao-Chan ;  Zuo, Wei] Chinese Acad Sci, Kavli Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: Based on the isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU04) transport model, we explored effects of in-medium NN elastic scattering cross section and nuclear symmetry energy on the subthreshold pion production in the Sn-132 + Sn-124 reaction. We find that, with the decrease of the incident beam energy, the effects of the in-medium NN elastic scattering cross section on the pi(-)/pi(+) ratio are larger than that of the symmetry energy, although the latter may be also larger. While keeping the effect of symmetry energy, the double ratio of pi(-)/pi(+) from neutron-rich and neutron-poor reaction systems (with the same mass number of system) Sn-132 + Sn-124 and Pm-128 + Pm-128 almost fully cancels out the effects of the in-medium NN elastic scattering cross section.
资助者: National Natural Science Foundation of China [11375239, 11175219, 11435014]; 973 Program of China [2007CB815004]; Knowledge Innovation Project of the Chinese Academy of Sciences [KJCX2-EW-N01]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000343944700003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15623
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Recommended Citation:
Guo, WM,Yong, GC,Zuo, W. Effects of nuclear symmetry energy and in-medium NN cross section in heavy-ion collisions at beam energies below the pion production threshold[J]. PHYSICAL REVIEW C,2014,90(4):44605.
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