From a sample of 1172Β±61D+βΟβΟ+Ο+ decay, we find
Ξ(D+βΟβΟ+Ο+)/Ξ(D+βKβΟ+Ο+)=0.0311Β±0.0018β0.0026+0.0016β. Using a coherent amplitude analysis
to fit the Dalitz plot of this decays, we find strong evidence that a scalar
resonance of mass 478β23+24βΒ±17 MeV/c2 and width 324β40+42βΒ±21 MeV/c2 accounts for approximately half of all decays.Comment: 10 pages, 3 eps figure