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Upsilon (nS) polarizations versus particle multiplicity in pp collisions at root s=7 TeV
CMS Collaboration
2016
发表期刊PHYSICS LETTERS B
卷号761页码:31-52
摘要The polarizations of the Upsilon(1S), Upsilon(2S), and Upsilon(3S) mesons are measured as a function of the charged particle multiplicity in proton-proton collisions at root s = 7 TeV. The measurements are performed with a dimuon data sample collected in 2011 by the CMS experiment, corresponding to an integrated luminosity of 4.9fb(-1). The results are extracted from the dimuon decay angular distributions, in two ranges of Upsilon(nS) transverse momentum (10-15 and 15-35 GeV), and in the rapidity interval |y| < 1.2. The results do not show significant changes from low-to high-multiplicity pp collisions, although large uncertainties preclude definite statements in the Upsilon(2S) and Upsilon(3S) cases. (C) 2016 The Author(s). Published by Elsevier B.V.
文章类型Article
关键词CMS Physics Quarkonium production Quarkonium polarization QCD medium effects
DOI10.1016/j.physletb.2016.07.065
关键词[WOS]QUARKONIUM
语种英语
WOS记录号WOS:000384469900006
引用统计
被引频次:1[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/311005/260745
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. Upsilon (nS) polarizations versus particle multiplicity in pp collisions at root s=7 TeV[J]. PHYSICS LETTERS B,2016,761:31-52.
APA CMS Collaboration.(2016).Upsilon (nS) polarizations versus particle multiplicity in pp collisions at root s=7 TeV.PHYSICS LETTERS B,761,31-52.
MLA CMS Collaboration."Upsilon (nS) polarizations versus particle multiplicity in pp collisions at root s=7 TeV".PHYSICS LETTERS B 761(2016):31-52.
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