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We have studied the implications of chiral symmetry breaking and SU(3) symmetry breaking for the axial-vector form factors of the low lying octet baryons (N, Σ, Ξ and Λ) in the chiral constituent quark model (χCQM). We have calculated the singlet (gA) and non-singlet (g 3 A and gA) axial-vector coupling constants expressed as combinations of the spin polarizations at zero momentum transfer. We have used the conventional dipole form of parametrization to analyse the Q2 dependence of the axial-vector form factors (GA(Q 2), GA(Q 2) and GA(Q 2)).

Singlet and non-singlet axial-vector form factors for the octet baryons.