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Running Coupling Constant from Position-Space Current-Current Correlation Functions in Three-Flavor Lattice QCD

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Calì, Salvatore ; Cichy, Krzysztof ; Korcyl, Piotr ; Simeth, Jakob
License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 01 Apr 2021 13:07


In this Letter, we provide a determination of the coupling constant in three-flavor quantum chromodynamics (QCD), α¯¯¯¯¯¯MSs(μ), for ¯¯¯¯¯¯MS renormalization scales μ∈(1,2)  GeV. The computation uses gauge field configuration ensembles with O(a)-improved Wilson-clover fermions generated by the Coordinated Lattice Simulations (CLS) consortium. Our approach is based on current-current correlation ...


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