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Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at root s=0.9 and 2.36 TeV
CMS Collaboration
2010
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号2
通讯作者Khachatryan, V (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要Measurements of inclusive charged-hadron transverse-momentum and pseudorapidity distributions are presented for proton-proton collisions at root s = 0.9 and 2.36 TeV. The data were collected with the CMS detector during the LHC commissioning in December 2009. For non-single-diffractive interactions, the average charged-hadron transverse momentum is measured to be 0.46 +/- 0.01 (stat.) +/- 0.01 (syst.) GeV/c at 0.9 TeV and 0.50 +/- 0.01 (stat.) +/- 0.01 (syst.) GeV/c at 2.36 TeV, for pseudorapidities between -2.4 and +2.4. At these energies, the measured pseudorapidity densities in the central region, dN(ch)/d eta vertical bar(vertical bar eta vertical bar<0.5), are 3.48 +/- 0.02 (stat.) +/- 0.13 (syst.) and 4.47 +/- 0.04 (stat.) +/- 0.16 (syst.), respectively. The results at 0.9 TeV are in agreement with previous measurements and confirm the expectation of near equal hadron production in p<(p)over bar> and pp collisions. The results at 2.36 TeV represent the highest-energy measurements at a particle collider to date.
关键词SQUARE-ROOT-S PARTICLE MULTIPLICITY CM ENERGIES DIFFRACTION DEPENDENCE
学科领域Physics
DOI10.1007/JHEP02(2010)041
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000275223100041
引用统计
被引频次:108[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/311005/212933
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. Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at root s=0.9 and 2.36 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2010(2).
APA CMS Collaboration.(2010).Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at root s=0.9 and 2.36 TeV.JOURNAL OF HIGH ENERGY PHYSICS(2).
MLA CMS Collaboration."Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at root s=0.9 and 2.36 TeV".JOURNAL OF HIGH ENERGY PHYSICS .2(2010).
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