\tau lepton decays and CVC

TL;DR

This paper estimates tau lepton decay branching fractions using experimental data and conservation laws, comparing predictions with observed results to validate theoretical models.

Contribution

It introduces a method to estimate tau decay branching fractions based on $e^+e^-$ data and CVC, providing a comparison with experimental measurements.

Findings

Estimated branching fractions align with experimental data

Validation of CVC in tau decays

Improved understanding of tau decay channels

Abstract

We use experimental data on $e^+e^- \to \eta (\eta^{\prime})\pi^+\pi^-$ and conservation of vector current to estimate the branching fractions of $\tau^-$ decay to $\eta (\eta^{\prime})\pi^-\pi^0\nu_{\tau}$. The obtained values are compared to the experimental results.