  We considered the electro- and photoproduction of \rho and other vector
mesons with moderately large transverse momentum in the scattering of
unpolarized electrons on unpolarized nucleons and nuclei. For these processes
we have analyzed how to extract the novel fragmentation functions \bar
b_1^q(z), \bar b_1^G(z), describing tensor polarization, and the photon double
spin-flip distribution \Delta^\gamma from the angular distribution of meson
decay products.
