Effective Lagrangian in QCD: vector mesons and skyrmions physics

The purpose of this communication is two fold. We first show that the proper introduction of the triplet of vector mesons, ρ, solve in an unique way the confusing question of how to stabilize the baryon solitons (Skyrmions); moreover it fixes the value of the (a-dimensional) constant in the Skyrme term as e ≅ g ρππ, explaining the origin of such a term. Second we shall indicate the numerical and analytical support for the main hypothesis made: the ρ mesons are the gauge particles associated to SUV(2), the hidden symmetry of non linear σ model. An outline of the analytical framework is given, and the numerical profile of the soliton solution, F(r), is shown, comparing the results with the Skyrme solution and its static properties