Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/126307
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Type: Journal article
Title: Measurement of the Z(→ ℓ ⁺ ℓ ⁻)γ production cross-section in pp collisions at √s = 13 TeV with the ATLAS detector
Other Titles: Measurement of the Z(-> l (+) l (-))gamma production cross-section in pp collisions at root s = 13 TeV with the ATLAS detector
Author: Aad, G.
Abbott, B.
Abbott, D.C.
Abed Abud, A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Achkar, B.
Adachi, S.
Adam, L.
Adam Bourdarios, C.
Adamczyk, L.
Adamek, L.
Adelman, J.
et al.
Citation: Journal of High Energy Physics, 2020; 2020(3):54-[i],1-54-51
Publisher: Springer Nature
Issue Date: 2020
ISSN: 1126-6708
1029-8479
Statement of
Responsibility: 
G. Aad … D. Duvnjak … P. Jackson … J.L. Oliver … A. Petridis … A. Qureshi … A.S. Sharma … M.J. White … et al. [The ATLAS Collaboration]
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⁻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.
Keywords: Hadron-hadron scattering (experiments)
Rights: Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3.This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
RMID: 1000017778
DOI: 10.1007/JHEP03(2020)054
Appears in Collections:Physics publications

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