First Measurement of Leptonic Coupling Asymmetries with Polarized Z bosons

The SLD Collaboration, K. Abe, T. Akagi

We present direct measurements of the $Z^0$-lepton coupling asymmetry parameters, $A_e$, $A_{\mu }$, and $A_{\tau }$, based on a data sample of 12,063 leptonic $Z^0$ decays collected by the S…