Study of tau- --> V P- nu(tau) in the framework of resonance chiral theory

TL;DR

This paper investigates tau lepton decays into vector and pseudoscalar mesons using resonance chiral theory, fitting spectral functions to predict branching ratios for various decay channels.

Contribution

It applies resonance chiral theory to analyze tau decays, fitting spectral data to determine resonance couplings and predict decay branching ratios.

Findings

Fitted spectral functions to extract resonance couplings.

Predicted branching ratios for multiple tau decay channels.

Provided theoretical insights into tau decay mechanisms.

Abstract

In this paper we study two kinds of tau decays: (a) tau- --> (rho pi-,omega pi-, phi pi-, K*0 K-) nu(tau), which belong to Delta S=0 processes and (b) Delta S = 1 processes, like tau- --> (rho K-, omega K-, phi K-, \bar{K*0} pi-) nu(tau), in the framework of resonance chiral theory. We fit the tau- --> omega pi- nu(tau) spectral function and the invariant mass distribution of omega K in the process of tau- --> omega K- nu(tau) to get the values of unknown resonance couplings. Then we make a prediction for branching ratios of all channels.