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Octet baryon axial, induced pseudoscalar, and pseudoscalar form factors arecomputed using a symmetry-preserving treatment of a vector$\,\times\,$vectorcontact interaction (SCI), thereby unifying them with an array of other baryonproperties and analogous treatments of semileptonic decays of pseudoscalarmesons. The baryons are treated as quark--plus--interacting-diquark boundstates, whose structure is obtained by solving a Poincar\'e-covariant Faddeevequation. The approach is marked by algebraic simplicity, involves no freeparameters, and since it is symmetry preserving, all consequences of partialconservation of the axial current are manifest. It is found that SCI resultsare consistent with only small violations of SU$(3)$-flavour symmetry, anoutcome which may be understood as a dynamical consequence of emergent hadronmass. The spin-flavour structure of the Poincar\'e-covariant baryon wavefunctions is expressed in the presence of both flavour-antitriplet scalardiquarks and flavour-sextet axialvector diquarks and plays a key role indetermining all form factors. Considering neutral axial currents, SCIpredictions for the flavour separation of octet baryon axial charges and,therefrom, values for the associated SU$(3)$ singlet, triplet, and octet axialcharges are obtained. The results indicate that at the hadron scale,$\zeta_{\cal H}$, valence degrees-of-freedom carry roughly 50% of an octetbaryon's total spin. Since there are no other degrees-of-freedom at$\zeta_{\cal H}$, the remainder may be associated with quark+diquark orbitalangular momentum.

Contact interaction analysis of octet baryon axialvector and pseudoscalar form factors