Novel mechanism for electric quadrupole moment generation in relativistic heavy-ion collisions

doi:10.1016/j.physletb.2019.04.002

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Novel mechanism for electric quadrupole moment generation in relativistic heavy-ion collisions
	Zhao, XL ; Ma, GL ; Ma, YG
刊名	PHYSICS LETTERS B
	2019
卷号	792 期号:-页码:413—418
关键词	ELLIPTIC FLOW QCD EVENT
ISSN号	0370-2693
DOI	10.1016/j.physletb.2019.04.002
文献子类	期刊论文
英文摘要	We present the spatial distributions of electromagnetic fields (E and B) and electromagnetic anomaly E . B in Au+Au collisions at the RHIC energy root s = 200 GeV based on a multi-phase transport model. A dipolar distribution of E . B is observed in non-central collisions. We find that the coupling of the E . B dipole and magnetic field B can induce an electric quadrupole moment which can further lead to the difference in elliptic flows between positive charged particles and negative charged particles through final interactions. The centrality dependence of the density of E . B is similar to the trend of the slope parameter r measured from the difference in elliptic flows between positive pions and negative pions by the STAR collaboration. Therefore, the novel mechanism for electric quadrupole moment generation can offer a new interpretation of the observed charge-dependent elliptic flow of pions, but without the formation of chiral magnetic wave. (C) 2019 The Authors. Published by Elsevier B.V.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31730]
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.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 2.Fudan Univ, Inst Modern Phys, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200433, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, XL,Ma, GL,Ma, YG. Novel mechanism for electric quadrupole moment generation in relativistic heavy-ion collisions[J]. PHYSICS LETTERS B,2019,792(-):413—418.
APA	Zhao, XL,Ma, GL,&Ma, YG.(2019).Novel mechanism for electric quadrupole moment generation in relativistic heavy-ion collisions.PHYSICS LETTERS B,792(-),413—418.
MLA	Zhao, XL,et al."Novel mechanism for electric quadrupole moment generation in relativistic heavy-ion collisions".PHYSICS LETTERS B 792.-(2019):413—418.