phi -> pi0 pi0 gamma Decay within a U(3)x U(3) Linear Sigma Model
  We show that therecently observed pion invariant mass distribution of the phi ->pi0 pi0 gamma decay can be satisfactorily described by the chiral U(3) X U(3) Linear Sigma Model. 
J. L. Lucio (U. of Guanajuato, Mexico and LNF-INFN, Italy), M.   Napsuciale (U. of Guanajuato, Mexico)