2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/37023Preliminary results of measurements of fermion-pair production at LEP2 are used to derive limits on new physics phenomena. Combinations of the cross sections and asymmetrie of the 4 LEP collaborations are interpreted in terms four-fermion contact interactions, exchange of Z' and leptoquarks. Results on the search for extra dimensions are also presented.4 pages, 3 figures, 2 tables; Proceedings of the Conference "QCD and High Energy Hadronic Interactions", Rencontres de Moriond, 18 - 24 March 2001High Energy Physics - Experimenttext