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Determination of the strong coupling constant αs(mZ) from measurements of the total cross section for top–antitop-quark production

Abstract:

We present a determination of the strong coupling constant αs(mZ) using inclusive top-quark pair production cross section measurements performed at the LHC and at the Tevatron. Following a procedure first applied by the CMS Collaboration, we extract individual values of αs(mZ) from measurements by different experiments at several centre-of-mass energies, using QCD predictions complete in NNLO perturbation theory, supplemented with NNLL approximations to all orders, and suitable sets of parton...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's Version

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Publisher copy:
10.1140/epjc/s10052-017-5340-5

Authors


Klijnsma, T More by this author
Dissertori, G More by this author
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Subgroup:
Particle Physics
Publisher:
Springer Publisher's website
Journal:
The European Physical Journal C Journal website
Volume:
77
Publication date:
2017-11-18
Acceptance date:
2017-10-27
DOI:
EISSN:
1434-6052
ISSN:
1434-6044
Pubs id:
pubs:948603
URN:
uri:6d648583-8372-4674-8ab4-cafaa929ca0f
UUID:
uuid:6d648583-8372-4674-8ab4-cafaa929ca0f
Local pid:
pubs:948603
Language:
English

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