2003/02/28 by q Collaboration, F. Farchioni, C. Gebert +4
Mathematics · Physics and Astronomy · #Chiral perturbation theory #High-Energy Particle Collisions Research #Lattice (music) #Lattice constant #Logarithm #Mathematical analysis #Mathematics #Meson #Particle physics #Particle physics theoretical and experimental studies #Perturbation (astronomy) #Perturbation theory (quantum mechanics) #Physics #Pseudoscalar #Pseudoscalar meson #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #Quark #Statistical physics #hep-lat
paper · pdf · doi:10.1016/s0370-2693(03)00386-1
published as Phys.Lett. B561 (2003) 102-110 · 11 pages, 3 figures; discussion of the results in section 3 extended
arxiv created 2003/03/07 · openalex publication_date 2003/04/30 · arxiv updated 2015/06/25 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The dependence of the pseudoscalar meson mass and decay constant is compared to one-loop Partially Quenched Chiral Perturbation Theory (PQChPT) in a numerical simulation with two light dynamical quarks. The characteristic behaviour with chiral logarithms is observed. The values of the fitted PQChPT-parameters are in a range close to the expectation in continuum in spite of the fact that the lattice spacing is still large, namely a=0.28 fm.