SPIN DENSITY MATRIX ELEMENTS IN VECTOR MESON LEPTO-PRODUCTION
S. V. Goloskokov, Peter B Kroll · 2005
It is reported on an analysis of vector meson leptoproduction at small Bjorken-$x$ and large photon virtuality within an approach that bases on generalized parton distributions (GPDs). This approach leads to results for cross sections and spin density matrix elements for $ρ$ and $ϕ$ leptoproduction in fair agreement with experiment.