ar X iv : h ep - p h / 97 12 26 3 v 1 4 D ec 1 99 7 Theoretical Aspects of τ → Kππν τ Decays

Predictions based on the chirally normalized vector meson dominance model for decay rates and distributions of τ decays into Kππντ final states are discussed. Disagreements with experimental results can be traced back to the K1 widths. Hadronic τ decays into final states with kaons can provide detailed information about low energy hadron physics in the strange sector. Predictions for final states with 2 and 3 meson final states [1, 2] based on the " chirally normalized vector meson dominance model " are in good agreement with recent experimental results [3]. Problems in the axial vector part in the Kππ final states are discussed in this contribution. We believe that these can be traced back to the K 1 widths. The matrix element M for the hadronic τ decay into Kππ final states τ (l, s) → ν(l ′ , s ′) + K(q 1 , m 1) + π(q 2 , m π) + π(q 2 , m π) can be expressed in terms of a leptonic and a hadronic current as M = G/