Franconi, Laura; Haug, Sigve; Weber, Michele; Anders, John Kenneth; Beck, Hans Peter; Ereditato, Antonio; Merlassino, Claudia; Miucci, Antonio; Weston, Thomas Daniel (2020). Measurement of the ℤ(→\ell⁺\ell-)γ production cross-section in pp collisions at \sqrts =13 TeV with the ATLAS detector. Journal of High Energy Physics, 2020(3) Springer 10.1007/JHEP03(2020)054
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Aad2020_Article_MeasurementOfTheZ___Production.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (1MB) | Preview |
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.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP) 08 Faculty of Science > Physics Institute |
UniBE Contributor: |
Franconi, Laura, Haug, Sigve, Weber, Michele, Anders, John Kenneth, Beck, Hans Peter, Ereditato, Antonio, Merlassino, Claudia, Miucci, Antonio, Weston, Thomas Daniel |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
BORIS Import LHEP |
Date Deposited: |
23 Apr 2021 14:54 |
Last Modified: |
02 Mar 2023 23:34 |
Publisher DOI: |
10.1007/JHEP03(2020)054 |
Additional Information: |
Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt |
BORIS DOI: |
10.48350/155593 |
URI: |
https://boris.unibe.ch/id/eprint/155593 |
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