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题名: Model dependence of isospin sensitive observables at high densities
作者: Guo, WM ;  Yong, GC ;  Wang, YJ ;  Li, QF ;  Zhang, HF ;  Zuo, W
刊名: PHYSICS LETTERS B
出版日期: 2013
卷号: 726, 期号:1-3, 页码:211-217
关键词: HEAVY-ION COLLISIONS ;  NEUTRON-RICH NUCLEI ;  ELASTIC CROSS-SECTION ;  SYMMETRY ENERGY ;  PROBE ;  EQUATION ;  PROTON ;  STATE ;  EMISSION ;  PHYSICS
学科分类: Physics
通讯作者: Yong, GC (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] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Guo, Wen-Mei; Wang, Yongjia; Li, Qingfeng] Huzhou Teachers Coll, Sch Sci, Huzhou 313000, Peoples R China; [Wang, Yongjia; Zhang, Hongfei] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China; [Yong, Gao-Chan; Zhang, Hongfei; Zuo, Wei] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: Within two different frameworks of isospin-dependent transport model, i.e., Boltzmann-Uehling-Uhlenbeck (IBUU04) and Ultrarelativistic Quantum Molecular Dynamics (UrQMD) transport models, sensitive probes of nuclear symmetry energy are simulated and compared. It is shown that neutron to proton ratio of free nucleons, pi(-)/pi(+) ratio as well as isospin-sensitive transverse and elliptic flows given by the two transport models with their "best settings", all have obvious differences. Discrepancy of numerical value of isospin-sensitive n/p ratio of free nucleon from the two models mainly originates from different symmetry potentials used and discrepancies of numerical value of charged pi(-)pi(+) ratio and isospin-sensitive flows mainly originate from different isospin-dependent nucleon-nucleon cross sections. These demonstrations call for more detailed studies on the model inputs (i.e., the density- and momentum-dependent symmetry potential and the isospin-dependent nucleon-nucleon cross section in medium) of isospin-dependent transport model used. The studies of model dependence of isospin sensitive observables can help nuclear physicists to pin down the density dependence of nuclear symmetry energy through comparison between experiments and theoretical simulations scientifically. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
资助者: National Natural Science Foundation of China [11175219, 11375239, 11375062, 11175074, 11075215, 11275052]; 973 Program of China [2013CB834405]; Knowledge Innovation Project of Chinese Academy of Sciences [KJCX2-EW-N01]; Chinese Academy of Sciences [2009J2-26]; Zhejiang Provincial Natural Science Foundation of China [Y6110644]; Qian-Jiang Talents Project of Zhejiang Province [2010R10102]; National Key Basic Research Program of China [2013CB834400]; Project of Knowledge Innovation Program (PKIP) of Chinese Academy of Sciences [KJCX2.YW.W10]; CAS/SAFEA International Partnership Program for Creative Research Teams [CXTD-J2005-1]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000326482200024
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15269
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Guo, WM,Yong, GC,Wang, YJ,et al. Model dependence of isospin sensitive observables at high densities[J]. PHYSICS LETTERS B,2013,726(1-3):211-217.
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