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Luminosity determination in pp collisions at root s=7 TeV using the ATLAS detector at the LHC
ATLAS collaboration
2011
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号71期号:4
通讯作者Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hermann Herder Str 3, D-79104 Freiburg, Germany.
摘要Measurements of luminosity obtained using the ATLAS detector during early running of the Large Hadron Collider (LHC) at root s = 7 TeV are presented. The luminosity is independently determined using several detectors and multiple algorithms, each having different acceptances, systematic uncertainties and sensitivity to background. The ratios of the luminosities obtained from these methods are monitored as a function of time and of mu, the average number of inelastic interactions per bunch crossing. Residual time- and mu-dependence between the methods is less than 2% for 0 < mu < 2.5. Absolute luminosity calibrations, performed using beam separation scans, have a common systematic uncertainty of +/- 11%, dominated by the measurement of the LHC beam currents. After calibration, the luminosities obtained from the different methods differ by at most +/- 2%. The visible cross sections measured using the beam scans are compared to predictions obtained with the PYTHIA and PHOJET event generators and the ATLAS detector simulation.
学科领域Physics
DOI10.1140/epjc/s10052-011-1630-5
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000291698800013
引用统计
被引频次:124[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/311005/213067
专题实验物理中心
作者单位中国科学院高能物理研究所
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ATLAS collaboration. Luminosity determination in pp collisions at root s=7 TeV using the ATLAS detector at the LHC[J]. EUROPEAN PHYSICAL JOURNAL C,2011,71(4).
APA ATLAS collaboration.(2011).Luminosity determination in pp collisions at root s=7 TeV using the ATLAS detector at the LHC.EUROPEAN PHYSICAL JOURNAL C,71(4).
MLA ATLAS collaboration."Luminosity determination in pp collisions at root s=7 TeV using the ATLAS detector at the LHC".EUROPEAN PHYSICAL JOURNAL C 71.4(2011).
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