ATLAS collaboration, .;
(2020)
Measurement of the Z(→ ℓ⁺ℓ¯)γ production cross-section in pp collisions at √s = 13 TeV with the ATLAS detector.
Journal of High Energy Physics
, Article 54. 10.1007/JHEP03(2020)054.
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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} ollected by the ATLAS detector at the LHC from 2015 to 2018. The production cross-section for the process pp → ℓ⁺ℓ¯γ X (ℓ = e, μ) 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¯γ 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.
| Type: | Article |
|---|---|
| Title: | Measurement of the Z(→ ℓ⁺ℓ¯)γ production cross-section in pp collisions at √s = 13 TeV with the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP03(2020)054 |
| Publisher version: | https://doi.org/10.1007/JHEP03(2020)054 |
| Language: | English |
| Additional information: | © 2020 Springer Nature. This article is distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10093922 |
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