Cumulants of the baryon number from central Au plus Au collision at E-lab=1.23 GeV/nucleon reveal the nuclear mean-field potentials
文献类型：期刊论文
| 作者 | Ye, Yunxiao1,2; Wang, Yongjia2; Steinheimer, Jan3; Nara, Yasushi3,4; Xu, Hao-jie2; Li, Pengcheng2,5; Lu, Dinghui1; Li, Qingfeng2,6; Stoecker, Horst3,7,8 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2018-11-29 |
| 卷号 | 98 |
| ISSN号 | 2469-9985 |
| DOI | 10.1103/PhysRevC.98.054620 |
| 英文摘要 | Fluctuations of the baryon number in relativistic heavy-ion collisions are a promising observable to explore the structure of the QCD phase diagram. The cumulant ratios in heavy-ion collisions at intermediate energies (root sNN < 5 GeV) have not been studied to date. We investigate the effects of mean-field potential and clustering on the cumulant ratios of baryon and proton number distributions in Au+Au collisions at beam energy of 1.23 GeV/nucleon as measured by the HADES Collaboration at GSI. Ultrarelativistic quantum molecular dynamics (UrQMD) and the JAM model are used to calculate the cumulants with different mean-field potentials. It is found that the cumulant ratios are strongly time dependent. At the early stage, the effects of the potentials on the fluctuations of the particle multiplicity in momentum space are relatively weak. The mean fields enhance the fluctuations during the expansion stage, especially for small rapidity acceptance windows. The enhancement of cumulant ratios for free protons is strongly suppressed as compared to that for all baryons. The mean-field potentials and the clustering play an important role for the measured cumulant ratios at intermediate energy. |
| WOS关键词 | HEAVY-ION COLLISIONS ; MOLECULAR-DYNAMICS ; EQUATION ; STATE ; FLOW ; DISTRIBUTIONS ; PHYSICS ; MATTER |
| 资助项目 | JSPS[JP17K05448] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000451576500003 |
| 出版者 | AMER PHYSICAL SOC |
| 源URL | [http://119.78.100.186/handle/113462/64430]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Wang, Yongjia |
| 作者单位 | 1.Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China 2.Huzhou Univ, Sch Sci, Huzhou 313000, Peoples R China 3.Frankfurt Inst Adv Studies, Ruth Moufang Str 1, D-60438 Frankfurt, Germany 4.Akita Int Univ, Akita 0101292, Japan 5.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Gansu, Peoples R China 6.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 7.Goethe Univ Frankfurt, Inst Theoret Phys, Max von Laue Str 1, D-60438 Frankfurt, Germany 8.GSI Helmholtzzentrum Schwerionenforsch GmbH, Planckstr 1, D-64291 Darmstadt, Germany |
| 推荐引用方式 GB/T 7714 | Ye, Yunxiao,Wang, Yongjia,Steinheimer, Jan,et al. Cumulants of the baryon number from central Au plus Au collision at E-lab=1.23 GeV/nucleon reveal the nuclear mean-field potentials[J]. PHYSICAL REVIEW C,2018,98. |
| APA | Ye, Yunxiao.,Wang, Yongjia.,Steinheimer, Jan.,Nara, Yasushi.,Xu, Hao-jie.,...&Stoecker, Horst.(2018).Cumulants of the baryon number from central Au plus Au collision at E-lab=1.23 GeV/nucleon reveal the nuclear mean-field potentials.PHYSICAL REVIEW C,98. |
| MLA | Ye, Yunxiao,et al."Cumulants of the baryon number from central Au plus Au collision at E-lab=1.23 GeV/nucleon reveal the nuclear mean-field potentials".PHYSICAL REVIEW C 98(2018). |
入库方式： OAI收割
来源：近代物理研究所
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