Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV

doi:10.1007/JHEP08(2011)141

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	Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV
	CMS Collaboration
	2011
发表期刊	JOURNAL OF HIGH ENERGY PHYSICS
期号	8
通讯作者	Sirunyan, AM (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要	A measurement is presented of the charged hadron multiplicity in hadronic PbPb collisions, as a function of pseudorapidity and centrality, at a collision energy of 2.76 TeV per nucleon pair. The data sample is collected using the CMS detector and a minimum-bias trigger, with the CMS solenoid off. The number of charged hadrons is measured both by counting the number of reconstructed particle hits and by forming hit doublets of pairs of layers in the pixel detector. The two methods give consistent results. The charged hadron multiplicity density, dN(ch)/d eta vertical bar(eta=0), for head-on collisions is found to be 1612 +/- 55, where the uncertainty is dominated by systematic effects. Comparisons of these results to previous measurements and to various models are also presented.
关键词	HEAVY-ION COLLISIONS NUCLEAR COLLISIONS MODEL LHC QCD
学科领域	Physics
DOI	10.1007/JHEP08(2011)141
收录类别	SCI
语种	英语
WOS类目	Physics, Particles & Fields
WOS记录号	WOS:000294901200018
引用统计
文献类型	期刊论文
条目标识符	http://ir.ihep.ac.cn/handle/311005/213109
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
推荐引用方式 GB/T 7714	CMS Collaboration. Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2011(8).
APA	CMS Collaboration.(2011).Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV.JOURNAL OF HIGH ENERGY PHYSICS(8).
MLA	CMS Collaboration."Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV".JOURNAL OF HIGH ENERGY PHYSICS .8(2011).

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