tau- -> K+ K- pi- nu_tau at CLEO III

TL;DR

This paper reports on the measurement of the branching ratio for the decay tau- to K+ K- pi- nu_tau using data from CLEO III, improving the precision of this measurement.

Contribution

It provides a more accurate measurement of the tau decay branching ratio involving kaons and pions, based on a large data sample from CLEO III.

Findings

Branching ratio measured as (1.59±0.06±0.13)×10^{-3}

Results are preliminary and improve previous measurements

Utilizes 3.26 fb^{-1} of data from CLEO III

Abstract

Based on 3.26 fb$^{-1}$ data sample collected at CLEO III, we study the decay $\tau^-\to K^+K^-\pi^-\nu_\tau$, and improve the measurement of the branching ratio ${\cal B}(\tau^-\to K^+K^-\pi^-\nu_\tau)= (1.59\pm0.06\pm0.13)\times10^{-3}$, the results are preliminary.