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New data on the production of single neutral pions in the$pd\rightarrow{}^3\textrm{He}\,\pi^0$ reaction are presented. For fifteenproton beam momenta between $p_p=1.60\;\textrm{GeV}/c$ and$p_p=1.74\;\textrm{GeV}/c$, differential cross sections are determined over alarge fraction of the backward hemisphere. Since the only previous systematicmeasurements of single-pion production at these energies were made in collinearkinematics, the present work constitutes a significant extension of the currentknowledge on this reaction. Even this far above the production threshold,significant changes are found in the behaviour of the angular distributionsover small intervals in beam momentum.

Backward single-pion production in the $\boldsymbol{pd\rightarrow {}^3\textrm{He}\,\pi^0}$ reaction with WASA-at-COSY