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Long-range and short-range dihadron angular correlations in central PbPb collisions at root s(NN)=2.76 TeV
CMS Collaboration
2011
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号7
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要First measurements of dihadron correlations for charged particles are presented for central PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV over a broad range in relative pseudorapidity (Delta eta) and the full range of relative azimuthal angle (Delta phi). The data were collected with the CMS detector, at the LHC. A broadening of the away-side (Delta phi approximate to pi) azimuthal correlation is observed at all Delta eta, as compared to the measurements in pp collisions. Furthermore, long-range dihadron correlations in Delta eta are observed for particles with similar phi values. This phenomenon, also known as the "ridge", persists up to at least vertical bar Delta eta vertical bar = 4. For particles with transverse momenta (p(T)) of 2-4 GeV/c, the ridge is found to be most prominent when these particles are correlated with particles of p(T) = 2-6 GeV/c, and to be much reduced when paired with particles of p(T) = 10-12 GeV/c.
关键词QUARK-GLUON PLASMA GLASMA FLUX TUBES NUCLEAR COLLISIONS COLLABORATION PERSPECTIVE EXPANSION
学科领域Physics
DOI10.1007/JHEP07(2011)076
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000293741500012
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被引频次:23[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/311005/213094
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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CMS Collaboration. Long-range and short-range dihadron angular correlations in central PbPb collisions at root s(NN)=2.76 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2011(7).
APA CMS Collaboration.(2011).Long-range and short-range dihadron angular correlations in central PbPb collisions at root s(NN)=2.76 TeV.JOURNAL OF HIGH ENERGY PHYSICS(7).
MLA CMS Collaboration."Long-range and short-range dihadron angular correlations in central PbPb collisions at root s(NN)=2.76 TeV".JOURNAL OF HIGH ENERGY PHYSICS .7(2011).
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