Update analysis of τ−→VP−ντ: Theory and Experiment

Within the resonance chiral theory (RχT), we have studied the process of a tau lepton decaying into a vector resonance plus a pseudo-Goldstone meson and a tau neutrino. Two kinds of processes are discussed: (a) τ−→(ρ0π−,ωπ−,ϕπ−,K∗0K−)ντ, belonging to ΔS=0 processes and (b) ΔS=1 processes, such as . To fit the τ−→ωπ−ντ spectral function and the decay distribution of τ−→ωK−ντ to get unknown resonance couplings, we then make a prediction for branching ratios of all channels.