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Evidence for Collective Multiparticle Correlations in p-Pb Collisions
CMS Collaboration
2015
发表期刊PHYSICAL REVIEW LETTERS
卷号115页码:12301
文章类型Article
摘要The second-order azimuthal anisotropy Fourier harmonics, nu(2), are obtained in p-Pb and PbPb collisions over a wide pseudorapidity (.) range based on correlations among six or more charged particles. The p-Pb data, corresponding to an integrated luminosity of 35 nb(-1), were collected during the 2013 LHC p-Pb run at a nucleon-nucleon center-of-mass energy of 5.02 TeV by the CMS experiment. A sample of semiperipheral PbPb collision data at root S-NN = 2.76 TeV, corresponding to an integrated luminosity of 2.5 mu b(-1) and covering a similar range of particle multiplicities as the p-Pb data, is also analyzed for comparison. The six-and eight-particle cumulant and the Lee-Yang zeros methods are used to extract the nu(2) coefficients, extending previous studies of two-and four-particle correlations. For both the p-Pb and PbPb systems, the nu(2) values obtained with correlations among more than four particles are consistent with previously published four-particle results. These data support the interpretation of a collective origin for the previously observed long-range (large..) correlations in both systems. The ratios of nu(2) values corresponding to correlations including different numbers of particles are compared to theoretical predictions that assume a hydrodynamic behavior of a p-Pb system dominated by fluctuations in the positions of participant nucleons. These results provide new insights into the multiparticle dynamics of collision systems with a very small overlapping region.
学科领域Physics
DOI10.1103/PhysRevLett.115.012301
收录类别SCI ; EI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000357030500003
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被引频次:66[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/311005/228393
专题粒子天体物理中心
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CMS Collaboration. Evidence for Collective Multiparticle Correlations in p-Pb Collisions[J]. PHYSICAL REVIEW LETTERS,2015,115:12301.
APA CMS Collaboration.(2015).Evidence for Collective Multiparticle Correlations in p-Pb Collisions.PHYSICAL REVIEW LETTERS,115,12301.
MLA CMS Collaboration."Evidence for Collective Multiparticle Correlations in p-Pb Collisions".PHYSICAL REVIEW LETTERS 115(2015):12301.
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