2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/142109Non-trivial spin effects do not die out with energy growth. Here, we discuss one example of such effects -- production of spin-3 mesons in diffractive DIS. Using both explicit k_t-factorization calculations and their vector-dominance-model interpretation, we argue that diffractive production of rho_3(1690) is a unique probe of several novel aspects of diffraction.4 pages, talk given at the 12th Workshop on High Energy Spin Physics (DSPIN-07), Dubna, Russia, September 3-7, 2007High Energy Physics - Phenomenologytext