Determination of the density region of the symmetry energy probed by the π?/π+ ratio
文献类型：期刊论文
| 作者 | Yong,Gao-Chan1,2; Gao,Yuan3; Wei,Gao-Feng4,5; Guo,Ya-Fei1,2; Zuo,Wei1,2
|
| 刊名 | Journal of Physics G: Nuclear and Particle Physics
 |
| 出版日期 | 2019-08-29 |
| 卷号 | 46期号:10 |
| ISSN号 | 0954-3899 |
| 关键词 | pion ratio asymmetric nuclear matter equation of state |
| DOI | 10.1088/1361-6471/ab3772 |
| 英文摘要 | Abstract The nuclear symmetry energy around or below saturation density has been extensively studied and roughly pinned down, while its behavior at suprasaturation densities is rather uncertain. Related experimental studies are being carried out or planned at facilities that offer radioactive beams worldwide. Towards the physical goal of probing the nuclear symmetry energy at high densities, π measurements in the medium nuclei 132Sn?+?124Sn collisions at 300 or 200 MeV/nucleon incident beam energies are ongoing at the Radioactive Isotope Beam Facility at RIKEN in Japan. However, our studies show that the observable π?/π+ ratio in the 132Sn?+?124Sn reactions at 300 or 200 MeV/nucleon incident beam energies mainly probes the symmetry energy around the saturation density. Only the π?/π+ ratio in the heavy reaction system and at relatively high incident beam energies may mainly probe the symmetry energy at suprasaturation densities. |
| 语种 | 英语 |
| 出版者 | IOP Publishing |
| WOS记录号 | IOP:0954-3899-46-10-AB3772 |
| 源URL | [http://119.78.100.186/handle/113462/141819]  |
| 专题 | 中国科学院近代物理研究所 |
| 作者单位 | 1.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China 2.School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 3.School of Information Engineering, Hangzhou Dianzi University, Hangzhou 310018, People’s Republic of China 4.School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550025, People’s Republic of China 5.Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University, Guiyang 550025, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Yong,Gao-Chan,Gao,Yuan,Wei,Gao-Feng,et al. Determination of the density region of the symmetry energy probed by the π?/π+ ratio[J]. Journal of Physics G: Nuclear and Particle Physics,2019,46(10). |
| APA | Yong,Gao-Chan,Gao,Yuan,Wei,Gao-Feng,Guo,Ya-Fei,&Zuo,Wei.(2019).Determination of the density region of the symmetry energy probed by the π?/π+ ratio.Journal of Physics G: Nuclear and Particle Physics,46(10). |
| MLA | Yong,Gao-Chan,et al."Determination of the density region of the symmetry energy probed by the π?/π+ ratio".Journal of Physics G: Nuclear and Particle Physics 46.10(2019). |
入库方式： OAI收割
来源：近代物理研究所
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