The model-independent analysis indications for spectroscopy of scalar mesons. Proof for the K^*₀ (900)

In a model-independent approach the data on ππ → ππ, K $\overline{K}$, ηη, ηη′ in the I ^G J ^PC = 0⁺0⁺⁺ channel and on the Kπ scattering in the $I\left(J^P\right)=\frac{1}{2}\left(0^{+}\right)$ channel are analyzed jointly for studying the status and QCD nature of the f ₀- and the K*₀-mesons. It is shown that in the 1500-MeV region, there are two states, wide (interpreted as a glueball) and narrow (q $\overline{q}$). In the Kπ-scattering data analysis, the proof for the K*₀(900) is given.