Anders, J.K.; Beck, H.P.; Chatterjee, M.; Ereditato, A.; Franconi, L.; Halser, L.; Haug, S.; Ilg, A.; Müller, R.; O'Neill, A.P.; Weber, M.S. (2023). Measurement of the tt̅ production cross-section in pp collisions at √s = 5.02 TeV with the ATLAS detector. Journal of High Energy Physics, 06 Springer 10.1007/JHEP06(2023)138
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The inclusive top-quark pair (tt̅ ) production cross-section σtt̅ is measured in proton–proton collisions at a centre-of-mass energy √s = 5.02 TeV, using 257 pb−1 of data collected in 2017 by the ATLAS experiment at the LHC. The tt̅ cross-section is measured in both the dilepton and single-lepton final states of the tt̅ system and then combined. The combination of the two measurements yields
σtt̅ = 67.5 ± 0.9 (stat.) ± 2.3 (syst.) ± 1.1 (lumi.) ± 0.2 (beam) pb,
where the four uncertainties reflect the limited size of the data sample, experimental and theoretical systematic effects, and imperfect knowledge of both the integrated luminosity and the LHC beam energy, giving a total uncertainty of 3.9%. The result is in agreement with theoretical quantum chromodynamic calculations at next-to-next-to-leading order in the strong coupling constant, including the resummation of next-to-next-to-leading logarithmic soft-gluon terms, and constrains the parton distribution functions of the proton at large Bjorken-x.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP) 10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) |
UniBE Contributor: |
Anders, John Kenneth, Beck, Hans Peter, Chatterjee, Meghranjana, Ereditato, Antonio, Franconi, Laura, Halser, Lea, Haug, Sigve, Ilg, Armin, Müller, Roman, O'Neill, Aaron Paul, Weber, Michele |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
BORIS Import LHEP |
Date Deposited: |
15 Feb 2024 09:48 |
Last Modified: |
15 Feb 2024 09:56 |
Publisher DOI: |
10.1007/JHEP06(2023)138 |
Additional Information: |
Kollaboration - Es sind nur die Berner Autor*innen namentlich erwaehnt; the ATLAS collaboration |
Uncontrolled Keywords: |
Hadron-Hadron Scattering, Top Physics |
BORIS DOI: |
10.48350/191911 |
URI: |
https://boris.unibe.ch/id/eprint/191911 |
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