2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/46380We study photoproduction of jets and heavy flavors in a polarized collider mode of HERA at $\sqrt{S}= 298$ GeV. We examine the sensitivity of the cross sections and their asymmetries to the proton's polarized gluon distribution and to the completely unknown parton distributions of longitudinally polarized photons.12 pages, LaTeX, 6 figures, uses amssymb and epsfig styles; Contribution to the proc. of the workshop on 'Future Physics at HERA', DESY, Hamburg, 1995/96High Energy Physics - Phenomenologytext