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Azimuthal Anisotropy of Charged Particles at High Transverse Momenta in Pb-Pb Collisions at root S-NN=2.76 TeV
CMS Collaboration
2012
发表期刊PHYSICAL REVIEW LETTERS
卷号109期号:2
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要The azimuthal anisotropy of charged particles in Pb-Pb collisions at root S-NN = 2.76 TeV is measured with the CMS detector at the LHC over an extended transverse momentum (p(T)) range up to approximately 60 GeV/c. The data cover both the low-p(T) region associated with hydrodynamic flow phenomena and the high-p(T) region where the anisotropies may reflect the path-length dependence of parton energy loss in the created medium. The anisotropy parameter (nu(2)) of the particles is extracted by correlating charged tracks with respect to the event-plane reconstructed by using the energy deposited in forward-angle calorimeters. For the six bins of collision centrality studied, spanning the range of 0-60% most-central events, the observed nu(2) values are found to first increase with p(T), reaching a maximum around p(T) = 3 GeV/c, and then to gradually decrease to almost zero, with the decline persisting up to at least p(T) = 40 GeV/c over the full centrality range measured.
关键词QUARK-GLUON PLASMA ROOT-S(NN)=2.76 TEV COLLABORATION PERSPECTIVE SUPPRESSION DEPENDENCE FLOW
学科领域Physics
DOI10.1103/PhysRevLett.109.022301
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000306324400005
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被引频次:74[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/311005/213280
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. Azimuthal Anisotropy of Charged Particles at High Transverse Momenta in Pb-Pb Collisions at root S-NN=2.76 TeV[J]. PHYSICAL REVIEW LETTERS,2012,109(2).
APA CMS Collaboration.(2012).Azimuthal Anisotropy of Charged Particles at High Transverse Momenta in Pb-Pb Collisions at root S-NN=2.76 TeV.PHYSICAL REVIEW LETTERS,109(2).
MLA CMS Collaboration."Azimuthal Anisotropy of Charged Particles at High Transverse Momenta in Pb-Pb Collisions at root S-NN=2.76 TeV".PHYSICAL REVIEW LETTERS 109.2(2012).
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