APPLICATION OF CURRENT-ALGEBRA IN 3 PSEUDOSCALAR MESON DECAYS OF TAU-LEPTON

The decays of tau --> 3 pi v and tau --> pi Kv, K rho v are calculate d using the hard pion and kaon current algebra and assuming the Axial- Vector meson dominance of the hadronic axial currents. Using the exper imental data on their masses and widths, the tau decay branching ratio s into these channels are calculated and found to be in a reasonable a greement with the experimental data. In particular, using the availabl e ALEPH data on the 3 pi spectrum, we determine the A(1) parameters, m (A) = 1.24 +/- 0.02 GeV, Gamma(A) = 0.43 +/- 0.02 GeV; the hard curren t algebra calculation yields a 3 pi branching ratio of 19 +/- 3%.