2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/197055We study the singlet and non-singlet scalar-meson masses using domain wall fermions and the quenched approximation. The singlet mass is found to be smaller than the non-singlet mass and indicates that the lowest singlet meson state could be lighter than 1 GeV. The two-point functions for very small quark masses are compared with expectations from the small-volume chiral perturbation theory and the presence of fermionic zero modes.Lattice2002(chiral), 3 pagesHigh Energy Physics - Latticetext