Kaon-nucleon finite energy sum rules revisited

Kaon-nucleon finite energy and continuous moment sum rule integrals are evaluated using recent phase-shift solutions to extract the t-channel exchange amplitudes and the results are compared with Regge-pole models. The exchange degeneracy breaking previously observed in the rho and A2 amplitudes is confirmed, and it is suggested that this may be due to an exotic P01 KN resonance. Regge trajectories are extracted from the integrals and are in good agreement with those found from direct fits to high-energy data. (Auth.)