OCTET-BARYON FORM-FACTORS IN THE DIQUARK MODEL

We present an alternative parameterization of the quark-diquark model of baryons which particularly takes care of the most recent proton ele ctric form-factor data from the E136 experiment at SLAC. In addition t o electromagnetic form factors of the nucleon, for which good agreemen t with data is achieved, we discuss the weak axial vector form factor of the nucleon as well as electromagnetic form factors of Lambda and S igma hyperons. Technical advance in calculating the pertinent analytic expressions within perturbative quantum chromodynamics is gained by f ormulating the wave function of the quark-diquark system in a covarian t way. Finally, we also comment on the influence of Sudakov correction s within the scope of the diquark model.