Z' Reservation at LC2000
J. Layssac, G. Montagna, O. Nicrosini, F. Piccinini, F. M. Renard, C. Verzegnassi
Abstract
We consider the possibility that one extra Z Z' exists with a mass of more then two TeV and fermion couplings that do not violate (charged) lepton universality. We show that, in such a situation, a functional relationship is generated between the deviations from the SM values of three leptonic observables of two-fermion production at LC 2000 that is completely independent of the values of the Z' mass and couplings. This selects a certain region in the 3-d space of the deviations (Z' "reservation") that is characteristic of the model and that would have no observable intersection with analogous regions corresponding to other interesting models of new physics.
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