Naive quark-pair—creation model and baryon decays

It is shown that the naive quark-pair---creation model, perhaps the simplest generalization of the additive quark model treating all the hadrons as composite, correctly describes the observed centrifugal-barrier effect in the baryon decays in which more than one partial wave contributes. Good agreement is found with the partial-wave analysis of Brody et al. of π^-p→π⁺Δ^- in the 1690-MeV mass region. Comparison is made with the previous unsuccessful SU(6)W predictions and with the work of Petersen and Rosner.