2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/134858The neutrinoless double beta decay and the direct dark matter detection experiments probe the origins of the two greatest mysteries of the universe, i.e. the baryon asymmetry and the invisible or dark matter. The underlying theoretical ideas are briefly discussed along with the experimental prospects.6 pages, 2 figures, Foreward to the Proc of the Workshop on Neutrinoless Double Beta Decay, Ahmedabad, India, Narosa Publishing House (2007)High Energy Physics - Phenomenologytext