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2019-12-18

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/171198

Determination of the QCD coupling from the static energy and the free energy

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https://doi.org/10.1103/PhysRevD.100.114511

Abstract

We present two determinations of the strong coupling α s . The first one is from the static energy at three-loop accuracy, and may be considered an update of earlier determinations by some of us. The new analysis includes new lattice data at smaller lattice spacings, and reaches distances as short as 0.0237 fm. We present a comprehensive and detailed estimate of the error sources that contribute to the uncertainty of the final result, α s ( M Z ) = 0.1166 0 + 0.00110 − 0.00056 . The second determination is based on lattice data for the singlet free energy at finite temperature up to distances as small as 0.0081 fm, from which we obtain α s ( M Z ) = 0.1163 8 + 0.0009 5 − 0.00087 .

Subject

Interaccions fortes (Física nuclear), Gran Col·lisionador d'Hadrons, Quarks

Subject (English)

Strong interactions (Nuclear physics), Large Hadron Collider (France and Switzerland), Quarks

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

BAZAVOV, Alexei, et al. Determination of the QCD coupling from the static energy and the free energy. Physical Review D. 2019. Vol. 100, num. 11, pags. 114511. ISSN 2470-0010. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/171198

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