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arXiv · 2203.05394

Determination of the strong-coupling constant from the $Z$-boson transverse-momentum distribution

Stefano Camarda·Giancarlo Ferrera·Matthias Schott
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Abstract

The strong-coupling constant is determined from the low-momentum region of the transverse-momentum distribution of $Z$ bosons produced through the Drell-Yan process, using predictions at third order in perturbative QCD. The analysis employs a measurement performed in proton-proton collisions at a centre-of-mass energy of $\sqrt{s} = 1.96$ TeV with the CDF experiment. The determined value of the strong coupling at the reference scale corresponding to the $Z$-boson mass is $\alpha_S(m_Z) = 0.1191^{+0.0013}_{-0.0016}$.

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Stefano Camarda, Giancarlo Ferrera, Matthias Schott. 2022-03-10. Determination of the strong-coupling constant from the $Z$-boson transverse-momentum distribution. https://doi.org/10.1140/epjc%2Fs10052-023-12373-2

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