Charged-particle nuclear modification factors in XeXe collisions at root S-NN=5.44 TeV

doi:10.1007/jhep10(2018)138

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	Charged-particle nuclear modification factors in XeXe collisions at root S-NN=5.44 TeV
	CMS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2018
期号	10 页码:138
关键词	Hadron-Hadron scattering (experiments) Heavy-ion collision Quark gluon plasma
ISSN号	1029-8479
DOI	10.1007/jhep10(2018)138
文献子类	Article
英文摘要	The differential yields of charged particles having pseudorapidity within vertical bar eta vertical bar < 1 are measured using xenon-xenon (XeXe) collisions at root S-NN = 5.44 TeV. The data, corresponding to an integrated luminosity of 3.42 mu b(-1), were collected in 2017 by the CMS experiment at the LHC. The yields are reported as functions of collision centrality and transverse momentum, pT, from 0.5 to 100 GeV. A previously reported pT spectrum from proton-proton collisions at root S = 5.02 TeV is used for comparison after correcting for the difference in center-of-mass energy. The nuclear modification factors using this reference, R-AA, are constructed and compared to previous measurements and theoretical predictions. In head-on collisions, the R-AA has a value of 0.17 in the pT range of 6-8 GeV, but increases to approximately 0.7 at 100 GeV. Above approximate to 6 GeV, the XeXe data show a notably smaller suppression than previous results for lead-lead (PbPb) collisions at root S-NN = 5.02 TeV when compared at the same centrality (i.e., the same fraction of total cross section). However, the XeXe suppression is slightly greater than that for PbPb in events having a similar number of participating nucleons.
WOS关键词	QUARK-GLUON PLASMA ; TRANSVERSE-MOMENTUM ; CENTRALITY DEPENDENCE ; PB COLLISIONS ; HEAVY ; SPECTRA ; PERSPECTIVE ; RAPIDITY ; LIGHT ; FLOW
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000448434500001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286783]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	CMS Collaboration. Charged-particle nuclear modification factors in XeXe collisions at root S-NN=5.44 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2018(10):138.
APA	CMS Collaboration.(2018).Charged-particle nuclear modification factors in XeXe collisions at root S-NN=5.44 TeV.JOURNAL OF HIGH ENERGY PHYSICS(10),138.
MLA	CMS Collaboration."Charged-particle nuclear modification factors in XeXe collisions at root S-NN=5.44 TeV".JOURNAL OF HIGH ENERGY PHYSICS .10(2018):138.