2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/175454The baryonic and dark matter fractions in the universe can be both generated by the same baryogenesis mechanism, simultaneously and with comparable amounts, if dark matter is constituted by the baryons of the mirror world, a parallel hidden sector with the same (or similar) microphysics as that of the observable world.8 pages, invited talk at the "Dark Side of the Universe" DSU 2006, Madrid, 19-24 June 2006High Energy Physics - Phenomenologytext