On nature of scalar and tensor mesons from the analysis of processes   pi-pi-> pi-pi, K-Kbar, eta-eta
  Analysis of the isoscalar S- and D-waves of processes pi-pi-> pi-pi, K-Kbar, eta-eta is carried out aimed at studying the status and QCD nature of scalar and tensor mesons below 2 GeV and 2.3 GeV, respectively. Assignment of these mesons to lower scalar and tensor nonets is proposed. 
Yu. S. Surovtsev, R. Kaminski, D. Krupa, M. Nagy