Lightest scalar and tensor resonances in γγ → ππ after the Belle experiment

New high statistics Belle data on the gamma gamma ->pi(+)pi(-) reaction cross section measured in the range of pion-pair invariant masses root s between 0.8 GeV and 1.5 GeV are analyzed to clarify the current situation around the sigma(600), f(0)(980), and f(2)(1270) resonances in gamma gamma collisions. The present analysis shows that the direct coupling constants of the sigma(600) and f(0)(980) resonances to gamma gamma are small, and the sigma(600)->gamma gamma and f(0)(980)->gamma gamma decays are four-quark transitions caused by the pi(+)pi(-) and K+K- loop mechanisms, respectively. The chiral shielding of the sigma(600) resonance takes place in the reactions gamma gamma ->pi pi as well as in pi pi scattering. Some results of a simultaneous description of the gamma gamma ->pi(+)pi(-) and gamma gamma ->pi(0)pi(0) Belle data are also presented. In particular, the following tentative estimate of the f(2)(1270)->gamma gamma decay width is obtained: Gamma(f2)->gamma gamma(m(f2)(2))approximate to 3.68 keV.