A study of f0(1500) decays into 4π0 in pp → 5π0 at rest

Abstract Crystal Barrel data on p p → 5π 0 at rest are presented. Mass spectra for 2 π 0 combinations, 3 π 0 and 4 π 0 and decay angular distributions all differ significantly from phase space. We present several ways of fitting the data. All agree on the definite presence of the f 0 (1500), observed in its 4 π 0 decay mode. It can decay into ππ(1300) and into σσ where σ stands for the full ππ S-wave amplitude.