Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/9301
Title: Measurement of the Z(-> l(+)l(-))gamma production cross-section in pp collisions at root s=13 TeV with the ATLAS detector
Authors: Aad, G.
Abbott, B.
Abbott, D. C.
Abud, A.
Abeling, K.
Abhayasinghe, D. K.
Bourdarios, Adam C.
Keywords: Hadron-Hadron scattering (experiments)
Gauge-Boson Couplings
Z-Gamma Production
Electroweak Corrections
Zz-Gamma
Issue Date: 2020
Publisher: Springer
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.
URI: https://doi.org/10.1007/JHEP03(2020)054
https://hdl.handle.net/20.500.11851/9301
ISSN: 1029-8479
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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