Regge Amplitude Arising fromSU(6)WVertices

Abstract

The spin structure of three-particle vertices may be determined from the quark model. Using these ${\mathrm{SU}(6)}_{W}$ vertices in the Van Hove model, we derive a Reggeized scattering amplitude. In addition to Regge poles, there are necessarily fixed Regge cuts in both fermion and boson exchange amplitudes. The magnitudes of the pole and cut terms in an entire class of $\mathrm{SU}(6)$-related reactions are determined by their magnitudes in a single reaction. As an example, we explain the observed presence or absence of wrong-signature nonsense dips in a class of reactions involving vector-meson exchange.