Subthreshold rho-0 Photoproduction on 2H, 3He and 12C

The rho-0 has been photoproduced using tagged photon energies in the 700-1120 MeV region on 2H, 3He and 12C by utilizing the Fermi momentum of the bound nucleons to produce the rho-0. These energies lie mostly below the production threshold on the free proton. Large mass modifications are indicated from the analysis, together with large polarizations of the produced rho-0 mesons with helicity zero, unlike the case of coherent rho-0 production on nuclei.