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Study of the nuclear symmetry energy from the rapidity-dependent elliptic flow in heavy-ion collisions around 1 GeV/nucleon regime

文献类型：期刊论文

作者Wang, Yongjia2; Li, Qingfeng1,2; Leifels, Yvonne3; Le Fevre, Arnaud3
刊名PHYSICS LETTERS B
出版日期2020-03-10
卷号802页码:6
关键词Nuclear symmetry energy Transport model Heavy ion collision Elliptic flow
ISSN号0370-2693
DOI10.1016/j.physletb.2020.135249
通讯作者Li, Qingfeng(liqf@zjhu.edu.cn)
英文摘要The elliptic flow ratio of neutrons versus protons in heavy-ion collisions (HICs) is one of the important probes to constrain the nuclear symmetry energy, however measuring the flow of neutrons with high precision is a great challenge for experimental techniques. In this work, the elliptic flow of protons is studied and it is found that the rapidity at which the sign of v(2) changes from negative to positive is sensitive to the density dependence of the symmetry energy. By comparing the existing FOPI experimental data for proton flows to the calculations with the ultrarelativistic quantum molecular dynamics (UrQMD) model, the slope parameter of the nuclear symmetry energy is extracted to be L-0 = 43 +/- 20 MeV at 95% confidence level. This is in good agreement with many recent results from investigations of nuclear structure properties and also partly overlaps with the recent result of the ASY-EOS experiment. (C) 2020 The Authors. Published by Elsevier B.V.
WOS关键词EQUATION-OF-STATE ; EFFECTIVE MASSES ; NEUTRON ; PROTON ; CONSTRAINTS ; DYNAMICS ; DENSITY ; MATTER
资助项目National Natural Science Foundation of China[11875125] ; National Natural Science Foundation of China[11947410] ; National Natural Science Foundation of China[11847315] ; National Natural Science Foundation of China[11505057] ; Zhejiang Provincial Natural Science Foundation of China[LY18A050002] ; Zhejiang Provincial Natural Science Foundation of China[LY19A050001] ; Ten Thousand Talent Program of Zhejiang province ; computing server C3S2 in Huzhou University
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
WOS记录号WOS:000515091400064
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Zhejiang Provincial Natural Science Foundation of China ; Ten Thousand Talent Program of Zhejiang province ; computing server C3S2 in Huzhou University
源URL[http://119.78.100.186/handle/113462/140620]  
专题中国科学院近代物理研究所
通讯作者Li, Qingfeng
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
2.Huzhou Univ, Sch Sci, Huzhou 313000, Peoples R China
3.GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
推荐引用方式
GB/T 7714		 Wang, Yongjia,Li, Qingfeng,Leifels, Yvonne,et al. Study of the nuclear symmetry energy from the rapidity-dependent elliptic flow in heavy-ion collisions around 1 GeV/nucleon regime[J]. PHYSICS LETTERS B,2020,802:6.
APA Wang, Yongjia,Li, Qingfeng,Leifels, Yvonne,&Le Fevre, Arnaud.(2020).Study of the nuclear symmetry energy from the rapidity-dependent elliptic flow in heavy-ion collisions around 1 GeV/nucleon regime.PHYSICS LETTERS B,802,6.
MLA Wang, Yongjia,et al."Study of the nuclear symmetry energy from the rapidity-dependent elliptic flow in heavy-ion collisions around 1 GeV/nucleon regime".PHYSICS LETTERS B 802(2020):6.

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来源：近代物理研究所

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