Limits on Non-Standard Top Quark Couplings from Electroweak Measurements

Abstract

We calculate the typical size of loop corrections to electroweak observables arising from non-standard $Z\overline{t}t$ and $Wtb$ vertices. We use an effective Lagrangian formalism based on the electroweak gauge group $SU(2{)}_L\times U(1{)}_Y\to U(1{)}_{EM}$. Limits on the non-standard model top quark couplings from electroweak observables are presented and compared with previously obtained limits.

Comments: 9 pages, uses epsf.sty