2006/04/30 by Craig McNeile, C. McNeile, C. Michael · 1 citation
Physics and Astronomy · #Coupling constant #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Lattice constant #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quark #Scalar (mathematics) #Scalar meson #hep-lat #hep-ph
paper · pdf · doi:10.1103/physrevd.74.014508
published as Phys.Rev.D74:014508,2006 · version accepted by Phys Rev D
arxiv created 2006/07/10 · openalex publication_date 2006/07/12 · arxiv updated 2016/09/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Lattice QCD with Nf=2 flavors of sea quark is used to explore the spectrum and decay of scalar mesons. We are able to determine the b1\ensuremath-a0 mass difference and this leads to the conclusion that the lightest nonsinglet scalar meson (a0) has a mass of 1.01(4) GeV. We determine from the lattice the coupling strength to KK and \ensuremathπ\ensuremathη. We compute the leptonic decay constant of the lightest nonsinglet scalar meson. We discuss the impact of these lattice results on the interpretation of the a0(980) state. We also discuss K0* states.