Determination of the strong-coupling constant from the Z-boson transverse-momentum distribution
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-antiproton collisions at a centre-of-mass energy of √{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 αS(mZ) =0 .1191-0.0016+0.0013.
- Publication:
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European Physical Journal C
- Pub Date:
- January 2024
- DOI:
- 10.1140/epjc/s10052-023-12373-2
- arXiv:
- arXiv:2203.05394
- Bibcode:
- 2024EPJC...84...39C
- Keywords:
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- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- Included O($\alpha_S^3$) matching, simultaneous fit of PDFs and $\alpha_S$, and additional uncertainties related to QED, non perturbative effects, and matching to fixed order. Version published by EPJC