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Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data
ATLAS Collaboration
2016
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号76期号:12
摘要The algorithms used by the ATLAS Collaboration to reconstruct and identify prompt photons are described. Measurements of the photon identification efficiencies are reported, using 4.9 fb(-1) of pp collision data collected at the LHC at root s = 7 TeV and 20.3 fb-1 at root s = 8 TeV. The efficiencies are measured separately for converted and unconverted photons, in four different pseudorapidity regions, for transverse momenta between 10 GeV and 1.5 TeV. The results from the combination of three data-driven techniques are compared to the predictions from a simulation of the detector response, after correcting the electromagnetic shower momenta in the simulation for the average differences observed with respect to data. Data-to-simulation efficiency ratios used as correction factors in physics measurements are determined to account for the small residual efficiency differences. These factors are measured with uncertainties between 0.5% and 10% in 7 TeV data and between 0.5% and 5.6% in 8 TeV data, depending on the photon transverse momentum and pseudorapidity.
文章类型Article
DOI10.1140/epjc/s10052-016-4507-9
关键词[WOS]HADRON-COLLISIONS
语种英语
WOS记录号WOS:000389890600001
引用统计
被引频次:17[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/311005/260933
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. Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data[J]. EUROPEAN PHYSICAL JOURNAL C,2016,76(12).
APA ATLAS Collaboration.(2016).Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data.EUROPEAN PHYSICAL JOURNAL C,76(12).
MLA ATLAS Collaboration."Measurement of the photon identification efficiencies with the ATLAS detector using LHC Run-1 data".EUROPEAN PHYSICAL JOURNAL C 76.12(2016).
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