Baryon decay in the quark model

Baryon decay amplitudes are calculated in the nonrelativistic-quark model. All of the amplitudes for photon and pseudoscalar meson emission are presented for baryon states with up to two units of orbital angular momentum or one unit of radial excitation. These amplitudes are then combined with the baryon compositions generated by a quark model which incorporates some of the features expected from quantum chromodynamics. The resulting amplitudes for the 'physical' states have the following properties: 1) they resolve the problem of 'missing' resonances: many states have very small elastic couplings; 2) the states predicted to be strongly coupled to elastic channels correspond to observed resonances in both their masses and partial widths; and 3) the observed violations of SU(6) selection rules are correctly predicted