of the different $\bar K^0$-meson-meson components has been determined we then allow these meson-meson components to interact, using for it the chiral unitary approach, and they give rise to the $f_0(500)$, $f_0(980)$, $a_0(980)$ resonances. They are seen in the $\pi^+ \pi^-$ invariant mass distributions \[$f_0(500)$, $f_0(980)$\] and the $\pi^0 \eta$ distribution \[$a_0(980)$\], and we not only get the poles of these resonances but also realistic mass distributions that can be compared with experiment. We found the shape of the $\pi^0 \eta$ distribution rather similar to the one found in the experiment, and we obtained a ratio of the branching ratios for $a_0(980)$ and $f_0(980)$ production in good agreement with experiment, all of it accomplished without any free parameter, meaning that the parameters of the theory have been determined before hand in the study of the meson meson interaction.

We emphasized the fact that it is the nature of the weak interactions, that allows for isospin violations, what made possible the production of the $a_0(980)$ and $f_0(980)$ resonances in the same decay. This is a most welcome feature that has allowed to test simultaneously the production of the two resonances in the same reaction offering new test for the chiral unitary 