Abstract

The deviations from standard model predictions for the pair production of Z0 at e+e− colliders with the inclusion of mixing between ordinary and exotic leptons are evaluated for (i) the differential cross section and (ii) the longitudinal polarization asymmetry at LEP II [Formula: see text] and at possible the next linear collider [Formula: see text] energies. For heavy exotic leptons (mE ~ 250 GeV) the deviations have distinctive features that could allow the possibility of distinguishing between mirror, vector-doublet and vector-singlet type of exotic lepton mixings.

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