@Article{ATLASCollaborationAad_etal2020, author="ATLAS Collaboration (Aad, G. et al and Alvarez Piqueras, D. and Aparisi Pozo, J. A. and Bailey, A. J. and Cabrera Urban, S. and Castillo, F. L. and Castillo Gimenez, V. and Cerda Alberich, L. and Costa, M. J. and Escobar, C. and Estrada Pastor, O. and Ferrer, A. and Fiorini, L. and Fullana Torregrosa, E. and Fuster, J. and Garcia, C. and Garcia Navarro, J. E. and Gonzalez de la Hoz, S. and Gonzalvo Rodriguez, G. R. and Guerrero Rojas, J. G. and Higon-Rodriguez, E. and Lacasta, C. and Lozano Bahilo, J. J. and Madaffari, D. and Mamuzic, J. and Marti-Garcia, S. and Melini, D. and Mi{\~{n}}ano, M. and Mitsou, V. A. and Rodriguez Bosca, S. and Rodriguez Rodriguez, D. and Ruiz-Martinez, A. and Salt, J. and Santra, A. and Soldevila, U. and Sanchez, J. and Valero, A. and Valls Ferrer, J. A. and Vos, M.", title="Measurement of the Z(-> l(+)l(-))gamma production cross-section in pp collisions at root s=13 TeV with the ATLAS detector", journal="Journal of High Energy Physics", year="2020", publisher="Springer", volume="03", number="3", pages="054--52pp", optkeywords="Hadron-Hadron scattering (experiments)", abstract="The production of a prompt photon in association with a Z boson is studied in proton-proton collisions at a centre-of-mass energy s = 13 TeV. The analysis uses a data sample with an integrated luminosity of 139 fb(-1) collected by the ATLAS detector at the LHC from 2015 to 2018. The production cross-section for the process pp -> l(+)l(-)gamma + X (l = e, mu) is measured within a fiducial phase-space region defined by kinematic requirements on the photon and the leptons, and by isolation requirements on the photon. An experimental precision of 2.9{\%} is achieved for the fiducial cross-section. Differential cross-sections are measured as a function of each of six kinematic variables characterising the l(+)l(-)gamma system. The data are compared with theoretical predictions based on next-to-leading-order and next-to-next-to-leading-order perturbative QCD calculations. The impact of next-to-leading-order electroweak corrections is also considered.", optnote="WOS:000519163600001", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4326), last updated on Tue, 31 Mar 2020 11:09:12 +0000", issn="1029-8479", doi="10.1007/JHEP03(2020)054", opturl="https://arxiv.org/abs/1911.04813", opturl="https://doi.org/10.1007/JHEP03(2020)054", language="English" }