Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC
文献类型：期刊论文
| 作者 | ATLAS collaboration |
| 刊名 | NEW JOURNAL OF PHYSICS
 |
| 出版日期 | 2011 |
| 卷号 | 13 |
| 关键词 | TRANSVERSE-MOMENTUM SPECTRA SQUARE-ROOT-S CM ENERGIES DISTRIBUTIONS COLLISIONS COLLIDER TEV |
| 通讯作者 | Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hermann Herder Str 3, D-79104 Freiburg Ibr, Germany. |
| 英文摘要 | Measurements are presented from proton-proton collisions at centre-of-mass energies of root s = 0.9, 2.36 and 7 TeV recorded with the ATLAS detector at the LHC. Events were collected using a single-arm minimum-bias trigger. The charged-particle multiplicity, its dependence on transverse momentum and pseudorapidity and the relationship between the mean transverse momentum and charged-particle multiplicity are measured. Measurements in different regions of phase space are shown, providing diffraction-reduced measurements as well as more inclusive ones. The observed distributions are corrected to well-defined phase-space regions, using model-independent corrections. The results are compared to each other and to various Monte Carlo (MC) models, including a new AMBT1 pythia6 tune. In all the kinematic regions considered, the particle multiplicities are higher than predicted by the MC models. The central charged-particle multiplicity per event and unit of pseudorapidity, for tracks with p(T) > 100 MeV, is measured to be 3.483 +/- 0.009 (stat) +/- 0.106 (syst) at root s = 0.9 TeV and 5.630 +/- 0.003 (stat) +/- 0.169 (syst) at root s = 7 TeV. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000292002100003 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213070]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 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 | ATLAS collaboration. Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC[J]. NEW JOURNAL OF PHYSICS,2011,13. |
| APA | ATLAS collaboration.(2011).Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC.NEW JOURNAL OF PHYSICS,13. |
| MLA | ATLAS collaboration."Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC".NEW JOURNAL OF PHYSICS 13(2011). |
入库方式： OAI收割
来源：高能物理研究所
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