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|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|
Abed Abud, A.
Adam Bourdarios, C.
|Citation:||The Journal of High Energy Physics, 2020; 2020(3):54-[i],1-54-51|
|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.|
|Appears in Collections:||Aurora harvest 4|
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