Model-independent Determination of Z Couplings at Lep 200 *
نویسنده
چکیده
All couplings of a new heavy gauge boson to ordinary fermions can be determined in a model-independent way at a large e + e − collider for large enough statistics. No such determination is possible at LEP 200, however, because its design integrated luminosity is too low for existing and forthcoming limits on Z ′ interactions. At any rate, it should be possible to distinguish between models for Z ′ masses < 1 T eV , or to set limits of this order on Z ′ masses for definite models. These are (preliminary) 1σ limits. We neglect systematic errors and assume an integrated luminosity of 0.5 f b −1 .
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