@Article{ATLASCollaborationAad_etal2016, author="ATLAS Collaboration (Aad, G. et al and Alvarez Piqueras, D. and Barranco Navarro, L. and Cabrera Urban, S. and Castillo Gimenez, V. and Cerda Alberich, L. and Costa, M. J. and Fernandez Martinez, P. and Ferrer, A. and Fiorini, L. and Fuster, J. and Garcia, C. and Garcia Navarro, J. E. and Gonzalez de la Hoz, S. and Hernandez Jimenez, Y. and Higon-Rodriguez, E. and Jimenez Pena, J. and King, M. and Lacasta, C. and Lacuesta, V. R. and Mamuzic, J. and Marti-Garcia, S. and Melini, D. and Mitsou, V. A. and Pedraza Lopez, S. and Rodriguez Rodriguez, D. and Romero Adam, E. and Ros, E. and Salt, J. and Sanchez Martinez, V. and Soldevila, U. and Sanchez, J. and Valero, A. and Valls Ferrer, J. A. and Vos, M.", title="Measurement of the angular coefficients in Z-boson events using electron and muon pairs from data taken at root s=8 TeV with the ATLAS detector", journal="Journal of High Energy Physics", year="2016", publisher="Springer", volume="08", number="8", pages="159 - 101pp", optkeywords="Hadron-Hadron scattering (experiments)", 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 Lambda(0-7) describing these distributions in the Z-boson Collins-Soper frame. The data analysed correspond to 20.3 fb(-1) of pp collisions at root s = 8TeV, collected by the ATLAS detector at the CERN LHC. The measurements are compared to the most precise fixed-order calculations currently available (O (alpha(2)(s))) 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 signi fi cant deviation from the O (alpha(2)(s)) predictions is observed for A(0)-A(2). Evidence is found for non-zero A(5,6, 7), consistent with expectations.", optnote="WOS:000382978700001", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2829), last updated on Thu, 03 Nov 2016 12:48:45 +0000", issn="1029-8479", doi="10.1007/JHEP08(2016)159", opturl="http://arxiv.org/abs/1606.00689", opturl="https://doi.org/10.1007/JHEP08(2016)159", archivePrefix="arXiv", eprint="1606.00689", language="English" }