Observation of two new $N^{\ast }$ resonances in $\psi (3686)\to p\bar{p}{\pi }^0$

Based on 106$\times {10}^6\psi (3686)$ 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 $B(\psi(3686)\rightarrow p\bar{p}\pi^0) = (1.65\pm0.03\pm0.15)\times 10^{-4}$\mathrm{.}Inthisdecay,7$N^*$ intermediate resonances are observed. Among these $N^{\ast }$ resonances, two new resonances are significant, one $1\mathrm{/}{2}^{+}$ resonance with a mass of $2300_{-30}^{+40}$${}_{-0}^{+109}$ $\mathrm{M}\mathrm{e}\mathrm{V}\mathrm{/}{c}^2$ and width of $340_{-30}^{+30}$${}_{-58}^{+110}$ $\mathrm{M}\mathrm{e}\mathrm{V}\mathrm{/}{c}^2$, and one $5\mathrm{/}{2}^{-}$ resonance with a mass of $2570_{-10}^{+19}$${}_{-10}^{+34}$ $\mathrm{M}\mathrm{e}\mathrm{V}\mathrm{/}{c}^2$ and width of $250_{-24}^{+14}$${}_{-21}^{+69}$ $\mathrm{M}\mathrm{e}\mathrm{V}\mathrm{/}{c}^2$. For the remaining 5 $N^{\ast }$ intermediate resonances, the analysis yields mass and width values which are consistent with those from established resonances.