2005/10/13 by W Armour, W. Armour, C. R. Allton +7 · 22 citations
Physics and Astronomy · #Chiral model #Chiral perturbation theory #Extrapolation #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Limit (mathematics) #Meson #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Vector meson #hep-lat
paper · pdf · doi:10.1088/0954-3899/32/7/007
published in Journal of Physics G Nuclear and Particle Physics 32(7), 971-991 (IOP Publishing) · 30 pages, 13 figs
arxiv created 2005/10/13 · openalex publication_date 2006/05/26 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The chiral extrapolation of the vector meson mass calculated in partially quenched lattice simulations is investigated. The leading one-loop corrections to the vector meson mass are derived for partially quenched QCD. A large sample of lattice results from the CP-PACS Collaboration is analysed, with explicit corrections for finite lattice spacing artefacts. To incorporate the effect of the opening decay channel as the chiral limit is approached, the extrapolation is studied using a necessary phenomenological extension of chiral effective field theory. This chiral analysis also provides a quantitative estimate of the leading finite volume corrections. It is found that the discretization, finite-volume and partial quenching effects can all be very well described in this framework, producing an extrapolated value of M ρ in excellent agreement with experiment. This procedure is also compared with extrapolations based on polynomial forms, where the results are much less enlightening.