Breakdown of the Vector Dominance Relation Betweenρ0,ωProduction and Polarized Photoproduction

Abstract
The validity of vector-meson dominance is tested by comparing our high statistics ρ0 and ω production experiments at 2.7 and 4 GeV/c with the results of polarized photopion production experiments. Our results suggest the breakdown of the vector-dominance model even after taking into account the strong S-wave ππ interaction in the ρ0 region.