TL;DR
This paper reviews the current theoretical understanding of tau physics, covering universality tests, lepton-flavour violation limits, alpha_s determination, |V_{us}| measurement, and decay spectrum modeling.
Contribution
It provides an overview of recent theoretical developments and results in tau physics, highlighting key measurements and their implications.
Findings
Charged-current universality tests support Standard Model predictions.
Bounds on lepton-flavour violation are consistent with existing limits.
Determination of alpha_s and |V_{us}| from tau decays aligns with other measurements.
Abstract
The present status of some selected topics on tau physics is presented: charged-current universality tests, bounds on lepton-flavour violation, the determination of alpha_s from the inclusive tau hadronic width, the measurement of |V_{us}| through the Cabibbo-suppressed decays of the tau, and the theoretical description of the "tau -> nu_tau K pi" spectrum.
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