Tau Electroweak Couplings

TL;DR

This paper reviews current measurements of tau lepton electroweak couplings, including decay parameters, production processes, and searches for anomalous couplings and rare decays, summarizing the latest experimental status.

Contribution

It provides a comprehensive overview of experimental results on tau electroweak interactions and related searches, highlighting recent progress and current limits.

Findings

Measurements of tau electroweak couplings are consistent with Standard Model predictions.

No evidence found for anomalous weak or electromagnetic dipole moments.

Limits set on lepton flavor violating decays and tau neutrino properties.

Abstract

We review world-average measurements of the tau lepton electroweak couplings, in both decay (including Michel parameters) and in production ($Z^0\to \tau^+\tau^-$ and $W^-\to\tau^-\nubar_\tau$). We review the searches for anomalous weak and EM dipole couplings. Finally, we present the status of several other tau lepton studies: searches for lepton flavor violating decays, neutrino oscillations, and tau neutrino mass limits.