Partial wave analysis of J/Ψ → PPπ0

Using a sample of 58 million J/Ψ events collected with the BESII detector at the BEPC, more than 100000 J/Ψ → ppπ 0 events are selected, and a detailed partial wave analysis is performed. The branching fraction is determined to be Br(J/Ψ → ppπ 0 ) = (1.33 ± 0.02 ± 0.11) X 10 -3 . A long-sought missing N*, first observed in J/Ψ → pnπ - , is observed in this decay too, with mass and width of 2040 +3 -4 ± 25 MeV/C 2 and 230 +8 -8 ± 52MeV/c 2 , respectively. Its spin-parity favors 3/2 + . The masses, widths, and spin parities of other N* states are obtained as well.