2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/37225The NEMO collaboration is looking to measure neutrinoless double beta decay down to a lower limit of 0.1 eV for the effective neutrino mass. The NEMO 3 detector is now operating in the Frejus Underground Laboratory. The expected performance and the data of the first runs are presented here.4 pages, 2 figures, XXXVIth Rencontres de Moriond, Les Arcs(2002)High Energy Physics - Experimenttext