Indexed on: 01 Dec '92Published on: 01 Dec '92Published in: Zeitschrift für Physik C Particles and Fields
The production ofη′π0 system inπ−p charge-exchange interactions atπ− momenta 38 GeV/c and 100 GeV/c has been studied. The 2γ and ηπ0π0 decay modes ofη′ leading to 4γ and 8γ final states respectively have been detected. No statistically significant peak is observed in theη′π0 mass spectrum in the range of 1.2 GeV÷2.1 GeV. An upper limit of 6·10−3 has been established for thea20(1320)→η′π0 branching ratio.