Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV
CMS Collaboration
刊名JOURNAL OF HIGH ENERGY PHYSICS
2011
期号8
关键词HEAVY-ION COLLISIONS NUCLEAR COLLISIONS MODEL LHC QCD
学科分类Physics
DOI10.1007/JHEP08(2011)141
通讯作者Sirunyan, AM (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
英文摘要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.
类目[WOS]Physics, Particles & Fields
收录类别SCI
语种英语
WOS记录号WOS:000294901200018
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213109
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
作者单位中国科学院高能物理研究所
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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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