2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/187430We provide a framework to analyze the electroproduction process ep -> ep rho with a polarized target, writing the angular distribution of the rho decay products in terms of spin density matrix elements that parameterize the hadronic subprocess gamma* p -> rho p. Using the helicity basis for both photon and meson, we find a representation in which the expressions for a polarized and unpolarized target are related by simple substitution rules.31 pages, 2 figures. v2: added section on non-resonant contributionsHigh Energy Physics - Phenomenologytext