Chiral and continuum extrapolation of partially-quenched lattice results

2005/04/30 by C. R. Allton, Chris Allton, W. Armour +5 · 61 citations
Physics and Astronomy · #Chiral perturbation theory #Discretization #Extrapolation #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Lattice field theory #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quark #hep-lat

paper · pdf · doi:10.1016/j.physletb.2005.09.020

published in Physics Letters B 628(1-2), 125-130 (Elsevier BV) · 9 pages, 3 figures; revised version appearing in PLB

openalex publication_date 2005/09/28 · arxiv created 2005/10/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The vector meson mass is extracted from a large sample of partially quenched, two-flavor lattice QCD simulations. For the first time, discretisation, finite-volume and partial quenching artefacts are treated in a unified framework which is consistent with the low-energy behaviour of QCD. This analysis incorporates the leading infrared behaviour dictated by chiral effective field theory. As the two-pion decay channel cannot be described by a low-energy expansion alone, a highly-constrained model for the decay channel of the rho-meson is introduced. The latter is essential for extrapolating lattice results from the quark-mass regime where the rho is observed to be a physical bound state.

Citations

• Lattice QCD with two dynamical flavors of domain wall fermions
• Infrared regularization for spin-1 fields
• Leading quenching effects in the proton magnetic moment
• Chiral analysis of quenched baryon masses
• Physical Nucleon Properties from Lattice QCD
• Convergence of chiral effective field theory
• Vector meson masses in chiral perturbation theory
• Quenched and partially quenched chiral perturbation theory for vector and tensor mesons
• Chiral perturbation theory with Wilson-type fermions includinga2effects:Nf=2degenerate case

Cited by

• Vector meson mass corrections at O(a2) in PQChPT with Wilson and Ginsparg–Wilson quarks
• Unified chiral analysis of the vector meson spectrum from lattice QCD
• PQChPT with staggered sea and valence Ginsparg–Wilson quarks: vector meson masses
• 1−+exotic meson at light quark masses
• First moments of nucleon generalized parton distributions
• Searching for low-lying multi-particle thresholds in lattice spectroscopy
• Strange form factors of the nucleon with a nonlocal chiral effective Lagrangian