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Symmetry energy and pion production in the Boltzmann-Langevin approach

文献类型：期刊论文

作者Xie, Wen-Jie1,2,4; Su, Jun1,2; Zhu, Long1,2; Zhang, Feng-Shou1,2,3
刊名PHYSICS LETTERS B
出版日期2013-01-29
卷号718页码:1510-1514
关键词Improved isospin-dependent Boltzmann-Langevin model Pion production Symmetry energy
ISSN号0370-2693
DOI10.1016/j.physletb.2012.12.021
英文摘要Based on the improved isospin-dependent Boltzmann-Langevin model which incorporates the dynamical fluctuations, we study the pi production in central heavy ion collisions at different incident energies from 250 to 1200A MeV. It is found that the pi multiplicity is sensitive to the nuclear equation of state. At pi subthreshold energy, the fluctuations have a larger effect on the pi multiplicity. The pi(-)/pi(+) ratios as a probe of nuclear symmetry energy are calculated with different stiffness of symmetry energy. The results favor a supersoft symmetry energy of the potential term in comparison with the FOPI data, which supports the one obtained by the usual Boltzmann-Uehling-Uhlenbeck model. (C) 2012 Elsevier B.V. All rights reserved.
WOS关键词HEAVY-ION COLLISIONS ; NUCLEAR-EQUATION ; STATE ; DYNAMICS
资助项目National Basic Research Program of China[2010CB832903]
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
WOS记录号WOS:000314554300050
出版者ELSEVIER SCIENCE BV
源URL[http://119.78.100.186/handle/113462/57081]  
专题中国科学院近代物理研究所
通讯作者Zhang, Feng-Shou
作者单位1.Beijing Normal Univ, Key Lab Beam Technol & Mat Modificat, Minist Educ, Coll Nucl Sci & Technol, Beijing 100875, Peoples R China
2.Beijing Radiat Ctr, Beijing 100875, Peoples R China
3.Natl Lab Heavy Ion Accelerator Lanzhou, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
4.Yuncheng Univ, Dept Phys, Yuncheng 044000, Peoples R China
推荐引用方式
GB/T 7714		 Xie, Wen-Jie,Su, Jun,Zhu, Long,et al. Symmetry energy and pion production in the Boltzmann-Langevin approach[J]. PHYSICS LETTERS B,2013,718:1510-1514.
APA Xie, Wen-Jie,Su, Jun,Zhu, Long,&Zhang, Feng-Shou.(2013).Symmetry energy and pion production in the Boltzmann-Langevin approach.PHYSICS LETTERS B,718,1510-1514.
MLA Xie, Wen-Jie,et al."Symmetry energy and pion production in the Boltzmann-Langevin approach".PHYSICS LETTERS B 718(2013):1510-1514.

入库方式： OAI收割

来源：近代物理研究所

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