Poincare Covariant Quark Models of Baryon Form Factors

Abstract

Poincare covariant quark models of the the nucleon, the $\Delta$ resonance and their excitations are explored. The baryon states are represented by eigenfunctions of the four-velocity and a confining mass operator, which reproduces the empirical spectrum up to $\sim$ 1700 MeV to an accuracy of $\sim 6$. Models of constituent quark currents provide the relations between ground-state properties and transition amplitudes.

Comments: Acknowledgments expanded