2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48864We perform a global analysis of electroweak precision measurements to find constraints on physics beyond the Standard Model. In particular, we discuss oblique parameters, which are useful to constrain additional matter fields, as well as extra $Z$ bosons, and supersymmetry. We also summarize the present information on the Higgs boson mass.8 pages of RevTeX, 4 figures, Talk presented at the DPF 99 meeting, Los Angeles, CA, January 6-9, 1999High Energy Physics - Phenomenologytext