Electromagnetic structure and weak decay of pseudoscalar mesons in a light-front QCD-inspired model

Abstract.We study the scaling of the 3S1-1S0 meson mass splitting and the pseudoscalar weak-decay constants with the mass of the meson, as seen in the available experimental data. We use an effective light-front QCD-inspired dynamical model regulated at short distances to describe the valence component of the pseudoscalar mesons. The experimentally known values of the mass splitting, decay constants (from global lattice-QCD averages) and the pion charge form factor up to 4 [GeV/c]2 are reasonably described by the model.