Effect of light sigma-meson Production in ppbar --> 3 pi0 at rest
  The pi0 pi0 mass spectra and angular distributions around KKbar -threshold and at 1.5 GeV in ppbar (at rest) --> 3 pi0 in the Crystal Barrel experiment are reanalyzed by applying the new method, which is consistent with unitarity of S-matrix and expressed directly by resonance parameters. The effects of light sigma-meson production are clearly seen to improve the fit with sigma, in comparing with the fit without sigma. 
Muneyuki Ishida (Tokyo Institute of Tech), Toshihiko Komada (Nihon   univ.), Shin Ishida (Nihon univ.), Taku Ishida (KEK), K...