Contact interaction analysis of octet baryon axial-vector and pseudoscalar form factors

Octet baryon axial, induced pseudoscalar, and pseudoscalar form factors are computed using a symmetry-preserving treatment of vector$\,\times\,$vector contact interaction (SCI), thereby unifying them with an array other properties analogous treatments semileptonic decays mesons. The baryons treated as quark--plus--interacting-diquark bound states, whose structure is obtained by solving Poincar\'e-covariant Faddeev equation. approach marked algebraic simplicity, involves no free parameters, since it symmetry preserving, all consequences partial conservation the axial current manifest. It found that SCI results consistent only small violations SU$(3)$-flavour symmetry, outcome which may be understood dynamical consequence emergent hadron mass. spin-flavour wave functions expressed in presence both flavour-antitriplet scalar diquarks flavour-sextet axialvector plays key role determining factors. Considering neutral currents, predictions for flavour separation octet charges and, therefrom, values associated SU$(3)$ singlet, triplet, obtained. indicate at scale, $\zeta_{\cal H}$, valence degrees-of-freedom carry roughly 50% baryon's total spin. Since there remainder quark+diquark orbital angular momentum.