2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38206The determination of the Z lineshape parameters at LEP1 is presented and the value of $\alsmz$ is derived from these measurements. The constraint on the Higgs mass obtained from a global fit to LEP1 and SLC data is also given.15 pagesHigh Energy Physics - ExperimentExtraction of α_s and constraint on the Higgs mass from Electroweak fits at the Z resonancetext