The strong-coupling constant is determined from the low-momentum region of the transverse-momentum dis-tribution of Z bosons produced through the Drell-Yan pro-cess, using predictions at third order in perturbative QCD. The analysis employs a measurement performed in proton -antiproton collisions at a centre-of-mass energy of root s = 1.96 TeV with the CDF experiment. The determined value of the strong coupling at the reference scale corresponding to the Z-boson mass is alpha S(mZ) = 0.1191( -0.0016)(+0.0013).
Determination of the strong-coupling constant from the Z-boson transverse-momentum distribution / S. Camarda, G. Ferrera, M. Schott. - In: EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6052. - 84:1(2024), pp. 39.1-39.11. [10.1140/epjc/s10052-023-12373-2]
Determination of the strong-coupling constant from the Z-boson transverse-momentum distribution
G. Ferrera;
2024
Abstract
The strong-coupling constant is determined from the low-momentum region of the transverse-momentum dis-tribution of Z bosons produced through the Drell-Yan pro-cess, using predictions at third order in perturbative QCD. The analysis employs a measurement performed in proton -antiproton collisions at a centre-of-mass energy of root s = 1.96 TeV with the CDF experiment. The determined value of the strong coupling at the reference scale corresponding to the Z-boson mass is alpha S(mZ) = 0.1191( -0.0016)(+0.0013).
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