2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/37840We review the precision measurement of the mass of the W-boson at LEP. We discuss the techniques used by the four LEP experiments to determine the mass of the W-boson as well as the major sources of systematic uncertainty. The measurement of the WW and ZZ cross-sections are presented.6 pages, to appear in the proceedings of the XII Workshop on Deep-Inelastic Scattering, DIS 2004, Strbske Pleso, SlovakiaHigh Energy Physics - Experimenttext