The running coupling of QCD with four flavors

2010/06/03 by Fatih Tekin, Rainer Sommer, Ulli Wolff · 2 citations
Engineering · Mathematics · Physics and Astronomy · #Chiral perturbation theory #Combinatorics #Coupling (piping) #Coupling strength #Engineering #Geometry #High-Energy Particle Collisions Research #Loop (graph theory) #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Perturbation theory (quantum mechanics) #Perturbative QCD #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quark #Scaling #hep-lat

paper · pdf · doi:10.1016/j.nuclphysb.2010.07.002

published as Nucl.Phys.B840:114-128,2010 · 22 pages, 4 figures

arxiv created 2010/06/03 · openalex publication_date 2010/07/11 · arxiv updated 2014/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We have calculated the step scaling function and the running coupling of QCD in the Schroedinger functional scheme with four flavors of O(a) improved Wilson quarks. Comparisons of our non-perturbative results with 2-loop and 3-loop perturbation theory as well as with non-perturbative data for only two flavors are made.

Citations

• Advanced Lattice QCD
• Ab Initio Determination of Light Hadron Masses
• Precise determination of the strong coupling constant inNf= 2+1 lattice QCD with the Schrödinger functional scheme
• Accurate Determinations ofαsfrom Realistic Lattice QCD
• A Precise Determination of the Running Coupling in the SU(3) Yang-Mills Theory
• Non-perturbative quark mass renormalization in quenched lattice QCD
• The Schrödinger Functional - a Renormalizable Probe for Non-Abelian Gauge Theories
• Review of Particle Physics

Cited by

• A non-perturbative exploration of the high energy regime in N_f=3 N f = 3 QCD
• Non-perturbative renormalization of quark mass in N f = 2 + 1 QCD with the Schrödinger functional scheme