1999/12/01 by Seyong Kim, Shigemi Ohta · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat
paper · pdf · doi:10.1103/physrevd.61.074506
published as Phys.Rev. D61 (2000) 074506 · 5 pages and 5 figures, use revtex4
arxiv created 1999/12/01 · openalex publication_date 2000/03/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Without chiral extrapolation, we achieved a realistic nucleon to \ensuremathρ-meson mass ratio of mN/m_\ensuremathρ=1.23\ifmmode±\else\textpm\fi0.04(stat)\ifmmode±\else\textpm\fi0.02(syst) in our quenched lattice QCD numerical calculation with staggered quarks. The systematic error is mostly from the finite-volume effect and the finite-spacing effect is negligible. The flavor symmetry breaking in the pion and \ensuremathρ meson is no longer visible. The lattice cutoff is set at 3.63\ifmmode±\else\textpm\fi0.06GeV, the spatial lattice volume is (2.59\ifmmode±\else\textpm\fi0.05fm)3, and bare quark masses as low as 4.5 MeV are used. Possible quenched chiral effects in the hadron mass are discussed.