Study of the pi(0)pi(0)-system with the GAMS-4000 spectrometer at 100 GeV/c

The pi(o)-pi(o)-system produced in the charge exchange pi(-) p-reaction at 100 GeV/c has been studied. The experiment was performed at the CERN SPS ac celerator with the multiphoton hodoscope spectrometer GAMS-4000. A partial wave analysis was carried out in the mass range from 0.8 GeV to 3.0 GeV at -t < 0.2 (GeV/c)(2) with the S, D, G and J waves. The S-wave exhibits rathe r complicated behaviour with a series of four bumps separated by three dips , at 1 GeV 1.5 GeV and 2 Gev, which give the evidence for several scalar re sonances. Clear peaks corresponding to the f(2)(1270), f(4)(2050) and f(6)( 2510) mesons are seen in the higher waves. All the three mesons are produce d via a dominating one pion t-channel exchange. The parameters and producti on cross sections of these mesons are measured.