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Strong running coupling from the gauge sector of domain wall lattice QCD with physical quark masses

We report on the first computation of the strong running coupling at the physical point (physical pion mass) from the ghost-gluon vertex, computed from lattice simulations with three flavors of domain wall fermions. We find α¯¯¯¯¯¯MS(m2Z)=0.1172(11), in remarkably good agreement with the world-wide...

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Bibliographic Details
Main Authors: Zafeiropoulos, Savvas (Author) , Boucaud, Ph. (Author) , Soto, F. de (Author) , Rodríguez-Quintero, J. (Author) , Segovia, J. (Author)
Format: Article (Journal)
Language:English
Published: 26 April 2019
In: Physical review letters
Year: 2019, Volume: 122, Issue: 16
ISSN:1079-7114
DOI:10.1103/PhysRevLett.122.162002
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.122.162002
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.122.162002
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Author Notes:S. Zafeiropoulos, Ph. Boucaud, F. De Soto, J. Rodríguez-Quintero, and J. Segovia
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Summary:We report on the first computation of the strong running coupling at the physical point (physical pion mass) from the ghost-gluon vertex, computed from lattice simulations with three flavors of domain wall fermions. We find α¯¯¯¯¯¯MS(m2Z)=0.1172(11), in remarkably good agreement with the world-wide average. Our computational bridge to this value is the Taylor-scheme strong coupling, which has been revealed of great interest by itself because it can be directly related to the quark-gluon interaction kernel in continuum approaches to the QCD bound-state problem.
Item Description:Gesehen am 24.03.2020
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.122.162002

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