Studies of hadronic states containing kaons in τ decays at BaBar

We present recent studies of τ lepton decays into final states containing kaons at BaBar. The preliminary measurement of the branching fraction is reported. We also present the preliminary determination of the mass and width of the K⁎−(892) resonance using the invariant mass spectrum in the decay . Further, a recent analysis of the decays τ−→K−ντ and τ−→π−ντ is reported, which includes a determination of the CKM-matrix element |Vus|.