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Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at root s=7 TeV with the ATLAS detector
ATLAS collaboration
2013
发表期刊PHYSICS LETTERS B
卷号720期号:1--3页码:32-51
通讯作者Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany.
摘要A measurement of angular correlations in Drell-Yan lepton pairs via the phi(eta)* observable is presented. This variable probes the same physics as the Z/gamma* boson transverse momentum with a better experimental resolution. The Z/gamma* -> e(+)e(-) and Z/gamma* -> mu(+)mu(-) decays produced in proton-proton collisions at a centre-of-mass energy of root s = 7 TeV are used. The data were collected with the ATLAS detector at the LHC and correspond to an integrated luminosity of 4.6 fb(-1). Normalised differential cross sections as a function of phi(eta)* are measured separately for electron and muon decay channels. These channels are then combined for improved accuracy. The cross section is also measured double differentially as a function of phi(eta)* for three independent bins of the Z boson rapidity. The results are compared to QCD calculations and to predictions from different Monte Carlo event generators. The data are reasonably well described, in all measured Z boson rapidity regions, by resummed QCD predictions combined with fixed-order perturbative QCD calculations or by some Monte Carlo event generators. The measurement precision is typically better by one order of magnitude than present theoretical uncertainties. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
关键词HADRON COLLIDERS CROSS-SECTION PARTON DISTRIBUTIONS HIGGS-BOSON Q(T) LHC QCD PREDICTIONS RESUMMATION COLLISIONS
学科领域Physics
DOI10.1016/j.physletb.2013.01.054
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000316513500004
引用统计
被引频次:33[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/311005/213491
专题实验物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
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ATLAS collaboration. Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at root s=7 TeV with the ATLAS detector[J]. PHYSICS LETTERS B,2013,720(1--3):32-51.
APA ATLAS collaboration.(2013).Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at root s=7 TeV with the ATLAS detector.PHYSICS LETTERS B,720(1--3),32-51.
MLA ATLAS collaboration."Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at root s=7 TeV with the ATLAS detector".PHYSICS LETTERS B 720.1--3(2013):32-51.
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