Measurement of the underlying event in jet events from 7 proton-proton collisions with the ATLAS detector
ATLAS collaboration
刊名EUROPEAN PHYSICAL JOURNAL C
2014
卷号74期号:8
关键词PARTON DISTRIBUTIONS LHC QCD
学科分类Physics
DOI10.1140/epjc/s10052-014-2965-5
通讯作者Aad, G (reprint author), Univ Adelaide, Dept Phys, Adelaide, SA, Australia.
英文摘要Distributions sensitive to the underlying event in QCD jet events have been measured with the ATLAS detector at the LHC, based on of proton-proton collision data collected at a centre-of-mass energy of 7 . Charged-particle mean and densities of all-particle and charged-particle multiplicity and have been measured in regions azimuthally transverse to the hardest jet in each event. These are presented both as one-dimensional distributions and with their mean values as functions of the leading-jet transverse momentum from 20 to 800 . The correlation of charged-particle mean with charged-particle multiplicity is also studied, and the densities include the forward rapidity region; these features provide extra data constraints for Monte Carlo modelling of colour reconnection and beam-remnant effects respectively. For the first time, underlying event observables have been computed separately for inclusive jet and exclusive dijet event selections, allowing more detailed study of the interplay of multiple partonic scattering and QCD radiation contributions to the underlying event. Comparisons to the predictions of different Monte Carlo models show a need for further model tuning, but the standard approach is found to generally reproduce the features of the underlying event in both types of event selection.
类目[WOS]Physics, Particles & Fields
收录类别SCI
语种英语
WOS记录号WOS:000340543600001
引用统计
被引频次:6[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/311005/213755
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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 underlying event in jet events from 7 proton-proton collisions with the ATLAS detector[J]. EUROPEAN PHYSICAL JOURNAL C,2014,74(8).
APA ATLAS collaboration.(2014).Measurement of the underlying event in jet events from 7 proton-proton collisions with the ATLAS detector.EUROPEAN PHYSICAL JOURNAL C,74(8).
MLA ATLAS collaboration."Measurement of the underlying event in jet events from 7 proton-proton collisions with the ATLAS detector".EUROPEAN PHYSICAL JOURNAL C 74.8(2014).
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