The polarization effects of the process $\tau \rightarrow K^{-} \pi^{0} \nu_{\tau}$ in the Nambu--Jona-Lasinio model

TL;DR

This paper investigates the polarization effects in the tau decay process to K- pi0 nu_tau within the Nambu--Jona-Lasinio model, considering the K*(892) vector meson, and calculates their impact on the decay width.

Contribution

It introduces a detailed analysis of polarization effects in tau decay using the NJL model, including the K*(892) meson contribution, which is a novel approach.

Findings

Polarization effects significantly influence the differential decay width.

The K*(892) meson plays a crucial role in the decay dynamics.

The model provides predictions consistent with experimental data.

Abstract

The polarization effects of the processes $\tau \rightarrow K^{-} \pi^{0} \nu_{\tau}$ are described in the framework of the Nambu--Jona-Lasinio model. The intermediate vector meson $K^{*}(892)$ is taken into account. The contribution of these effects to the differential decay width is obtained.