On nature of the scalar-isoscalar mesons in the uniformizing-variable method based on analyticity and unitarity

The experimental data on the processes $\pi \pi \to \pi \pi ,K\bar{K},\eta \eta ,\eta {\eta }^{\mathrm{\prime }}$ in the $I^G{J}^{PC}=0^{+}{0}^{++}$ channel have been jointly analyzed to study the status and nature of the $f_0$. The method of analysis is based on analyticity and unitarity and uses an uniformization procedure. Some spectroscopic implications from results of the analysis are discussed.