Investigation of the pi(0)pi(0) system at a primary momentum of 100 GeV/c by using the GAMS-4000 spectrometer

The pi(0)pi(0) system produced in charge-exchange pi(-)p interactions at a primary momentum of 100 GeV/c has been studied. The data employed come from the experiment that was performed at the CERN SPS accelerator and which re corded photons from pi(0) decays with the aid of the hodoscopic multiphoton GAMS-4000 spectrometer. A partial-wave analysis of the pi(0)pi(0) system i n the mass interval between 0.8 and 3 GeV has been performed with allowance for the S, D, G, and J waves. The S wave has a rather complicated structur e, displaying a series of four bumps separated by three dips at about 1, 1. 5, and 2 GeV. This suggests the existence of several scalar resonances. The higher waves show clear peaks corresponding to the f(2)(1270), f(4)(2050), and f(6)(2510) mesons, which are produced predominantly via one-pion excha nge. The parameters of these mesons and their production cross sections hav e been determined.