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hep-ph2026
Insight on confinement from the QCD effective charge
A. Deur
Like the Gell-Mann--Low coupling of QED, the effective charge is a physical, observable-defined running coupling that can serve as the QCD coupling . It can be r…
hep-ph2025
The strong coupling from the IR to the UV extremes: Determination of and prospects from EIC and JLab at 22 GeV
A. Deur
We discuss how the Bjorken sum rule allows access to the QCD running coupling at any scale, including in the deep infrared IR domain. The Bjorken sum data from Jefferson Lab,…
hep-ph2025
The QCD Running Coupling
A. Deur
We describe the coupling of the strong force. Denoted as , it sets the strength of that force, just as or specify the strength of the gravity and electromagnetism. Its…
hep-ph2018
The QCD running coupling at all scales and the connection between hadron masses and Λ_s
Alexandre Deur
We report on recent experimental and theoretical developments in our understanding of the QCD running coupling α_s in QCD's nonperturbative regime. They allow us to analytically co…