Global polarization of Lambda hyperons in Au plus Au collisions at root s(NN)=200 GeV
文献类型：期刊论文
| 作者 | Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Ajitanand, NN; Alekseev, I; Anderson, DM |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2018 |
| 卷号 | 98期号:1页码:- |
| 关键词 | RELATIVISTIC NUCLEAR COLLISIONS HEAVY-ION COLLISIONS FLOW DETECTOR |
| ISSN号 | 2469-9985 |
| DOI | 10.1103/PhysRevC.98.014910 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Global polarization of Lambda hyperons has been measured to be of the order of a few tenths of a percentage in Au+Au collisions at root s(NN) = 200 GeV, with no significant difference between Lambda and (Lambda) over bar. These new results reveal the collision energy dependence of the global polarization together with the results previously observed at root s(NN) = 7.7-62.4 GeV and indicate noticeable vorticity of the medium created in noncentral heavy-ion collisions at the highest Relativistic Heavy Ion Collider collision energy. The signal is in rough quantitative agreement with the theoretical predictions from a hydrodynamic model and from a multi-phase transport model. The polarization is larger in more peripheral collisions, and depends weakly on the hyperon's transverse momentum and pseudorapidity eta(H) within vertical bar eta(H)vertical bar < 1. An indication of the polarization dependence on the event-by-event charge asymmetry is observed at the 2 sigma level, suggesting a possible contribution to the polarization from the axial current induced by the initial magnetic field. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/30958]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Heidelberg Univ, D-69120 Heidelberg, Germany 2.US Naval Acad, Annapolis, MD 21402 USA 3.Valparaiso Univ, Valparaiso, IN 46383 USA 4.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 5.Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China 6.Univ Illinois, Chicago, IL 60607 USA 7.Creighton Univ, Omaha, NE 68178 USA 8.Czech Tech Univ, FNSPE, Prague 11519, Czech Republic 9.Nucl Phys Inst AS CR, Prague 25068, Czech Republic 10.Tech Univ Darmstadt, D-64289 Darmstadt, Germany |
| 推荐引用方式 GB/T 7714 | Adam, J,Adamczyk, L,Adams, JR,et al. Global polarization of Lambda hyperons in Au plus Au collisions at root s(NN)=200 GeV[J]. PHYSICAL REVIEW C,2018,98(1):-. |
| APA | Adam, J.,Adamczyk, L.,Adams, JR.,Adkins, JK.,Agakishiev, G.,...&Zyzak, M.(2018).Global polarization of Lambda hyperons in Au plus Au collisions at root s(NN)=200 GeV.PHYSICAL REVIEW C,98(1),-. |
| MLA | Adam, J,et al."Global polarization of Lambda hyperons in Au plus Au collisions at root s(NN)=200 GeV".PHYSICAL REVIEW C 98.1(2018):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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