Electroweak Measurements on the Z Resonance

TL;DR

This paper reviews and consolidates the final precision electroweak measurements from Z resonance experiments at LEP and SLC, analyzing their consistency and the impact of theoretical uncertainties on fundamental parameters.

Contribution

It provides a comprehensive summary of the final electroweak measurements and discusses the effects of theoretical uncertainties on key parameters like alpha_QED at the Z mass.

Findings

Measurements are consistent internally.

Theoretical uncertainties affect the precision of alpha_QED(m_Z).

Final published results are summarized and analyzed.

Abstract

Almost all precision electroweak measurements from the Z resonance made at the LEP storage ring by the ALEPH, DELPHI, L3 and OPAL experiments and those made using a polarized electron beam at the SLC by the SLD experiment are now final and have been published. Changes in the measurements since the last RADCOR meeting are discussed. The internal consistency of the measurements is considered. The impact of remaining theoretical uncertainties in the QCD sector are examined as well as the impact of experimental and theoretical uncertainties on the value of $\alpha_{\mathrm{QED}}(m_{\mathrm{Z}})$.