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Charged particle multiplicities in pp interactions at root s=0:9, 2:36, and 7 TeV
CMS Collaboration
2011
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号1
通讯作者Khachatryan, V (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要Measurements of primary charged hadron multiplicity distributions are presented for non-single-diffractive events in proton-proton collisions at centre-of-mass energies of root s = 0.9, 2.36, and 7 TeV, in five pseudorapidity ranges from vertical bar eta vertical bar < 0.5 to vertical bar eta vertical bar < 2.4. The data were collected with the minimum-bias trigger of the CMS experiment during the LHC commissioning runs in 2009 and the 7 TeV run in 2010. The multiplicity distribution at root s - 0.9 TeV is in agreement with previous measurements. At higher energies the increase of the mean multiplicity with root s is underestimated by most event generators. The average transverse momentum as a function of the multiplicity is also presented. The measurement of higher-order moments of the multiplicity distribution con firms the violation of Koba-Nielsen-Olesen scaling that has been observed at lower energies.
关键词DUAL PARTON MODEL PROTON-ANTIPROTON COLLISIONS TRANSVERSE-MOMENTUM MULTIPARTICLE PRODUCTION NUCLEUS COLLISIONS HADRON-COLLISIONS CROSS-SECTIONS HIGH-ENERGIES MINIMUM-BIAS ISR ENERGIES
学科领域Physics
DOI10.1007/JHEP01(2011)079
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000287937900001
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被引频次:56[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/311005/213021
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. Charged particle multiplicities in pp interactions at root s=0:9, 2:36, and 7 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2011(1).
APA CMS Collaboration.(2011).Charged particle multiplicities in pp interactions at root s=0:9, 2:36, and 7 TeV.JOURNAL OF HIGH ENERGY PHYSICS(1).
MLA CMS Collaboration."Charged particle multiplicities in pp interactions at root s=0:9, 2:36, and 7 TeV".JOURNAL OF HIGH ENERGY PHYSICS .1(2011).
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