F. Cardarelli

Nucleon and pion electromagnetic form-factors in a light front constituent quark model

Nucleon and pion electromagnetic form factors are evaluated in the spacelike region within a light-front constituent quark model, where eigenfunctions of a mass operator, reproducing a large set of hadron energy levels, are adopted and quark form factors are considered in the one-body current. The hadron form factors are sharply affected by the high momentum tail generated in the wave function by the one-gluon-exchange interaction. Useful information on the electromagnetic structure of light constituent quarks can be obtained from the comparison with nucleon and pion experimental data.

SU(6) breaking effects in the nucleon elastic electromagnetic form factors

The effects of both kinematical and dynamical SU(6) breaking on the nucleon elastic form factors,

Electromagnetic form factors of the ϱ meson in a light-front constituent quark model

{G}_{E}^{N}{(Q}^{2})

Charge form-factor of pi and K mesons

and

Charge form factor of {pi} and {ital K} mesons

{G}_{M}^{N}{(Q}^{2}),

Radiative πϱ and πω transition form factors in a light-front constituent quark model

are investigated within the constituent quark model formulated on the light front. The investigation is focused on

Electromagnetic N − Δ transition form factors in a light-front constitutent quark model

{G}_{E}^{n}{(Q}^{2})

Relativistic effects on the neutron charge form factor in the constituent quark model

and the ratio

Isgur-Wise form factors of heavy baryons within a light-front constituent quark model

{G}_{M}^{p}{(Q}^{2}{)/G}_{M}^{n}{(Q}^{2}),

Analysis of theΛb→Λc+lν¯ldecay within a light-front constituent quark model

which within the SU(6) symmetry are given by