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By using the cross sections of e^+e^- \to p\bar{p}{\pi}^0 measured at thecenter-of-mass energies from 3.65 to 4.60 GeV, we find that the line shape wellagrees with pure continuum production parametrized by a power law function andthe significance of both {\psi}(3770) and {\psi}(4230) \to p\bar{p}{\pi}^0 isless than 0.4{\sigma}. We set more stringent constraints on the charmlessdecays of the charmonium state, {\psi}(3770), and the charmoniumlike state,{\psi}(4230), to p\bar{p}{\pi}^0 than in previous measurements. The data arealso used to estimate the cross sections of p\bar{p} \to {\pi}^0{\psi}(3770)and p\bar{p} \to {\pi}^0{\psi}(4230) that are essential for planning the datataking of the PANDA experiment.

physical review. d/physical review. d.

Improved description of e^+e^- \to p\bar{p}{\pi}^0 cross section line  shape and more stringent constraints on {\psi}(3770) and {\psi}(4230) \to  p\bar{p}{\pi}^0