Chang, Lay NamLebedev, O.Loinaz, WilliamTakeuchi, Tatsu2016-10-182016-10-182001-04-010556-2821http://hdl.handle.net/10919/73273We consider extensions of the Standard Model with an extra U(1) gauge boson which couples to B − (αL_e + βL_µ + γL_τ ) with α + β + γ = 3. We show that the extra gauge boson necessarily mixes with the Z, leading to potentially significant corrections to the Z f f vertex. The constraints on the size of this correction imposed by the Z–pole data from LEP and SLD are derived.7 pagesapplication/pdfenIn CopyrightAstronomy & AstrophysicsPhysics, Particles & FieldsPhysicsSOLAR-NEUTRINO OSCILLATIONSPARITY VIOLATING COUPLINGSFERMION PAIR PRODUCTIONASSISTED TECHNICOLORQED CORRECTIONSBARYON NUMBERMODELSBOSONTOPCOLORArticle - Refereed637