RADIATIVE-TAU DECAYS WITH ONE PSEUDOSCALAR MESON

We have calculated the decay tau-->nupi(K)gamma. We present the photon energy spectrum, the meson-photon invariant mass spectrum. and the in tegrated rate as a function of a photon energy cut or an invariant mas s cut. Both the internal bremsstrahlung and the structure-dependent ra diation have been taken into account. To this aim we have parametrized the form factors F(V) and F(A), which determine the structure-depende nt radiation. Observables especially suited for the measurement of the structure-dependent form factors are found and implications on the wi dth of the a1 discussed. We compare our results with previously publis hed ones.