Measurement of the angular coefficients in ZZ-boson events using electron and muon pairs from data taken at s√=8s=8 TeV with the ATLAS detectorCitation formats

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Measurement of the angular coefficients in ZZ-boson events using electron and muon pairs from data taken at s√=8s=8 TeV with the ATLAS detector. / ATLAS Collaboration .

In: The Journal of High Energy Physics, Vol. 2016, No. 8, 159, 29.08.2016.

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@article{f48cfa9941e84d4abedbdccaf53e5a5f,
title = "Measurement of the angular coefficients in ZZ-boson events using electron and muon pairs from data taken at s√=8s=8 TeV with the ATLAS detector",
abstract = "The angular distributions of Drell-Yan charged lepton pairs in the vicinity of the Z-boson mass peak probe the underlying QCD dynamics of Z-boson production. This paper presents a measurement of the complete set of angular coefficients A0−7 describing these distributions in the Z-boson Collins-Soper frame. The data analysed correspond to 20.3 fb−1 of pp collisions at s√=8s=8 TeV, collected by the ATLAS detector at the CERN LHC. The measurements are compared to the most precise fixed-order calculations currently available (O(α2s))(O(αs2)) and with theoretical predictions embedded in Monte Carlo generators. The measurements are precise enough to probe QCD corrections beyond the formal accuracy of these calculations and to provide discrimination between different parton-shower models. A significant deviation from the (O(α2s))(O(αs2)) predictions is observed for A0 − A2. Evidence is found for non-zero A5,6,7, consistent with expectations.",
keywords = "hep-ex",
author = "Brian Cox and Stephen Watts and Terence Wyatt and {Da Via}, Cinzia and Joleen Pater and Andrew Pilkington and Darren Price and Alexander Oh and {ATLAS Collaboration}",
note = "84 pages plus author list + cover pages (101 pages total), 33 figures, 27 tables. Submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2014-10/",
year = "2016",
month = "8",
day = "29",
doi = "10.1007/JHEP08(2016)159",
language = "English",
volume = "2016",
journal = "The Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Nature",
number = "8",

}

RIS

TY - JOUR

T1 - Measurement of the angular coefficients in ZZ-boson events using electron and muon pairs from data taken at s√=8s=8 TeV with the ATLAS detector

AU - Cox, Brian

AU - Watts, Stephen

AU - Wyatt, Terence

AU - Da Via, Cinzia

AU - Pater, Joleen

AU - Pilkington, Andrew

AU - Price, Darren

AU - Oh, Alexander

AU - ATLAS Collaboration

N1 - 84 pages plus author list + cover pages (101 pages total), 33 figures, 27 tables. Submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2014-10/

PY - 2016/8/29

Y1 - 2016/8/29

N2 - The angular distributions of Drell-Yan charged lepton pairs in the vicinity of the Z-boson mass peak probe the underlying QCD dynamics of Z-boson production. This paper presents a measurement of the complete set of angular coefficients A0−7 describing these distributions in the Z-boson Collins-Soper frame. The data analysed correspond to 20.3 fb−1 of pp collisions at s√=8s=8 TeV, collected by the ATLAS detector at the CERN LHC. The measurements are compared to the most precise fixed-order calculations currently available (O(α2s))(O(αs2)) and with theoretical predictions embedded in Monte Carlo generators. The measurements are precise enough to probe QCD corrections beyond the formal accuracy of these calculations and to provide discrimination between different parton-shower models. A significant deviation from the (O(α2s))(O(αs2)) predictions is observed for A0 − A2. Evidence is found for non-zero A5,6,7, consistent with expectations.

AB - The angular distributions of Drell-Yan charged lepton pairs in the vicinity of the Z-boson mass peak probe the underlying QCD dynamics of Z-boson production. This paper presents a measurement of the complete set of angular coefficients A0−7 describing these distributions in the Z-boson Collins-Soper frame. The data analysed correspond to 20.3 fb−1 of pp collisions at s√=8s=8 TeV, collected by the ATLAS detector at the CERN LHC. The measurements are compared to the most precise fixed-order calculations currently available (O(α2s))(O(αs2)) and with theoretical predictions embedded in Monte Carlo generators. The measurements are precise enough to probe QCD corrections beyond the formal accuracy of these calculations and to provide discrimination between different parton-shower models. A significant deviation from the (O(α2s))(O(αs2)) predictions is observed for A0 − A2. Evidence is found for non-zero A5,6,7, consistent with expectations.

KW - hep-ex

U2 - 10.1007/JHEP08(2016)159

DO - 10.1007/JHEP08(2016)159

M3 - Article

VL - 2016

JO - The Journal of High Energy Physics

JF - The Journal of High Energy Physics

SN - 1126-6708

IS - 8

M1 - 159

ER -