The determination of r₀ and r₁ in N_f=2+1 QCD

2023/12/22 by Tom Matty Bo Asmussen, Roman Höllwieser, Asmussen, Tom Matty Bo +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2312.14726

openalex publication_date 2023/12/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

We determine the scales r₀, r₁, the ratio r₀/r₁ for N_f = 2 + 1 flavor QCD ensembles generated by CLS. These scales are determined from an improved definition of the static force, which we measure using Wilson loops and furthermore use to study the shape of the potential. Our analysis involves various continuum and chiral extrapolations of data that covers pion masses between 134 MeV and 420 MeV and five lattice spacings down to 0.038 fm.

Related

• The determination of potential scales in 2+1 flavor QCD
• Scale Setting for CLS 2+1 Simulations
• Scale r₀ and the static potential from the CLS lattices
• Nucleon Charges and Sigma Terms from N_f=2+1 QCD
• The pion scalar form factor with N_f=2+1 Wilson fermions