Strange vector currents and the OZI-rule

We investigate within a meson-exchange model the OZI allowed coupling of the phi meson to the nucleon with the inclusion of kaon loops and hyperon excitations. All parameters of the model have previously been determined from a variety of hadronic reactions. A strong cancellation of the Various contributions is observed which results in a small phi NN coupling. We also show that a realistic isoscalar spectral function including the correlated pi rho exchange leads to sizeably reduced strange vector form factors based on the dispersion-theoretical analysis of the nucleons' electromagnetic form factors explaining our previous result. (C) 1997 Published by Elsevier Science B.V.