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Model dependence of isospin sensitive observables at high densities

文献类型：期刊论文

作者Li, Qingfeng3; Wang, Yongjia3,5; Yong, Gao-Chan1,2; Guo, Wen-Mei2,3,4; Zuo, Wei1,2; Zhang, Hongfei1,5
刊名PHYSICS LETTERS B
出版日期2013-10-01
卷号726页码:211-217
ISSN号0370-2693
DOI10.1016/j.physletb.2013.07.056
文献子类Article
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.
WOS关键词HEAVY-ION COLLISIONS ; NEUTRON-RICH NUCLEI ; ELASTIC CROSS-SECTION ; SYMMETRY ENERGY ; PROBE ; EQUATION ; PROTON ; STATE ; EMISSION ; PHYSICS
资助项目CAS/SAFEA International Partnership Program for Creative Research Teams[CXTD-J2005-1]
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
WOS记录号WOS:000326482200024
出版者ELSEVIER SCIENCE BV
源URL[http://119.78.100.186/handle/113462/48439]  
专题近代物理研究所_理论物理研究室
通讯作者Yong, Gao-Chan
作者单位1.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
3.Huzhou Teachers Coll, Sch Sci, Huzhou 313000, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Li, Qingfeng,Wang, Yongjia,Yong, Gao-Chan,et al. Model dependence of isospin sensitive observables at high densities[J]. PHYSICS LETTERS B,2013,726:211-217.
APA Li, Qingfeng,Wang, Yongjia,Yong, Gao-Chan,Guo, Wen-Mei,Zuo, Wei,&Zhang, Hongfei.(2013).Model dependence of isospin sensitive observables at high densities.PHYSICS LETTERS B,726,211-217.
MLA Li, Qingfeng,et al."Model dependence of isospin sensitive observables at high densities".PHYSICS LETTERS B 726(2013):211-217.

入库方式： OAI收割

来源：近代物理研究所

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