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Measurement with the ATLAS detector of multi-particle azimuthal correlations in p plus Pb collisions at root s(NN)=5.02 TeV
ATLAS collaboration
2013
发表期刊PHYSICS LETTERS B
卷号725期号:1--3页码:60-78
通讯作者Aad, G (reprint author), Univ Adelaide, Sch Chem & Phys, Adelaide, SA, Australia.
摘要In order to study further the long-range correlations ("ridge") observed recently in p + Pb collisions at root s(NN) = 5.02 TeV, the second-order azimuthal anisotropy parameter of charged particles, v(2), has been measured with the cumulant method using the ATLAS detector at the LHC. In a data sample corresponding to an integrated luminosity of approximately 1 mu b(-1), the parameter v(2) has been obtained using two- and four-particle cumulants over the pseudorapidity range vertical bar eta vertical bar < 2.5. The results are presented as a function of transverse momentum and the event activity, defined in terms of the transverse energy summed over 3.1 < eta < 4.9 in the direction of the Pb beam. They show features characteristic of collective anisotropic flow, similar to that observed in Pb + Pb collisions. A comparison is made to results obtained using two-particle correlation methods, and to predictions from hydrodynamic models of p + Pb collisions. Despite the small transverse spatial extent of the p + Pb collision system, the large magnitude of v(2) and its similarity to hydrodynamic predictions provide additional evidence for the importance of final-state effects in p + Pb reactions. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
关键词ANGULAR-CORRELATIONS PPB COLLISIONS ELLIPTIC FLOW LONG-RANGE SIDE LHC
学科领域Physics
DOI10.1016/j.physletb.2013.06.057
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000322606800006
引用统计
被引频次:134[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213577
专题实验物理中心
作者单位中国科学院高能物理研究所
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ATLAS collaboration. Measurement with the ATLAS detector of multi-particle azimuthal correlations in p plus Pb collisions at root s(NN)=5.02 TeV[J]. PHYSICS LETTERS B,2013,725(1--3):60-78.
APA ATLAS collaboration.(2013).Measurement with the ATLAS detector of multi-particle azimuthal correlations in p plus Pb collisions at root s(NN)=5.02 TeV.PHYSICS LETTERS B,725(1--3),60-78.
MLA ATLAS collaboration."Measurement with the ATLAS detector of multi-particle azimuthal correlations in p plus Pb collisions at root s(NN)=5.02 TeV".PHYSICS LETTERS B 725.1--3(2013):60-78.
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