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

Abstract

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