Based on 106$\times10^6 \psi(3686)$ events collected with the BESIII detector at the BEPCII facility, a partial wave analysis of $\psi(3686)\rightarrow p\bar{ p}\pi^0$ is performed. The branching fraction of this channel has been determined to be $B(\psi(3686)\rightarrow p\bar{ p}\pi^0) = (1.65\pm0.03\pm0.15)\times 10^{ -4}$. In this decay, 7 $N^*$ intermediate resonances are observed. Among these $N^*$ resonances, two new resonances are significant, one $1/2^+$ resonance with a mass of $2300^{ +40}_{ -30}$$^{ +109}_{ -0}$ $\mathrm{ MeV}/c^2$ and width of $340^{ +30}_{ -30}$$^{ +110}_{ -58}$ $\mathrm{ MeV}/c^2$, and one $5/2^-$ resonance with a mass of $2570^{ +19}_{ -10}$$^{ +34}_{ -10}$ $\mathrm{ MeV}/c^2$ and width of $250^{ +14}_{ -24}$$^{ +69}_{ -21}$ $\mathrm{ MeV}/c^2$. For the remaining 5 $N^*$ intermediate resonances, the analysis yields mass and width values which are consistent with those from established resonances.
Categories: hep-ex