Eur. Phys. J. A (2006) 27: 213-223
https://doi.org/10.1140/epja/i2005-10246-4

Hadron Physics

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

¹ Departamento de Fısica, Instituto Tecnológico de Aeronáutica, Cento Técnico Aeroespacial, 12.228-900, S ao Paulo, Brazil
² Centro de Ciências Exatas e Tecnológicas, Universidade Cruzeiro do Sul, 08060-070, S ao Paulo, Brazil
³ Instituto de Fısica Teórica, Universidade Estadual Paulista, 01405-900, S ao Paulo, Brazil
⁴ Instituto de Fısica e Matemática, Universidade Federal de Pelotas, 96010-900, Rio Grande do Sul, Brazil

^* e-mail: pacheco@ift.unesp.br

Received: 19 September 2005
Accepted: 11 February 2006
Published online: 14 March 2006

Abstract

We study the scaling of the ³ S ₁-¹ S ₀ 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.