Testing chiral models of vector mesons in multipion decays of rho(770) andomega(782)

Predictions of the models based on effective chiral Lagrangians of vector m esons rho(770) and omega(782) are considered for such measurable quantities as the partial widths of various rho --> 4 pi and omega --> 5 pi decays an d their corresponding excitation curves. Analogous curves for the channel r ho(-) --> (4 pi)(-) are obtained for tau lepton decays. The angular distrib utions for various combinations of the final pions from the rho --> 4 pi an d omega --> 5 pi decays in the e(+)e(-)-annihilation and photoproduction ar e also found. A simple method for the order-of-magnitude estimation of the partial widths based essentially on the threshold character of the above mu ltipion decays is presented. (C) 2000 MAIK "Nauka/Interperiodica".