Gonzalez-Garcia, M. C.Novaes, Sérgio Ferraz [UNESP]2014-05-272014-05-271997-02-17Nuclear Physics B, v. 486, n. 1-2, p. 3-22, 1997.0550-3213http://hdl.handle.net/11449/130725We investigate the effects induced by excited leptons at the one-loop level in the observables measured on the Ζ peak at LEP. Using a general effective Lagrangian approach to describe the couplings of the excited leptons, we compute their contributions to both oblique parameters and Ζ partial widths. Our results show that the new effects are comparable to the present experimental sensitivity, but they do not lead to a significant improvement on the available constraints on the couplings and masses of these states.3-22engArtigo10.1016/S0550-3213(96)00651-7WOS:A1997WJ44800001Acesso restrito2-s2.0-0031575491