Exclusive hadronic $\tau$ decays, within $\&$ beyond the Standard Model

TL;DR

This paper reviews semileptonic tau decays within and beyond the Standard Model, highlighting their importance for understanding hadronization and testing new physics at TeV scales, especially with upcoming Belle-II data.

Contribution

It provides a comprehensive overview of tau decay processes and discusses their potential for new physics searches in the context of current and future experiments.

Findings

Tau decays are key to studying low-energy hadronization.

They serve as clean probes for new physics at TeV scales.

Upcoming Belle-II data will enhance these studies.

Abstract

Semileptonic exclusive tau decays in the Standard Model are reviewed. As it is well-known, they are a privileged arena to learn about low-energy hadronization. They also allow for a number of clean new physics tests, which have attracted much attention recently, probing scales as high as a few TeV. In light of forthcoming Belle-II data, perspectives on this area are bright.