Couplings of Baryon Resonances from Current Divergences

Abstract

Using the partially conserved axial-vector current hypothesis and assuming the axial-vector current to remain an octet to a good approximation in broken $S{U}_3$, relations are obtained for the couplings of baryon resonances with the normal baryons and pseudoscalar mesons. Using a few observed decay widths as input, the strengths of the remaining couplings are estimated. The results are compared with the results of other authors using different approaches and with the sum rules following from a first-order symmetry breaking.