Abstract
We have measured excitation functions for the dp → 3 He X , ( X = π 0 , η ) channels near the η production threshold. The data were taken during a slow ramping of the COSY internal deuteron beam scattered on a proton target. The excitation function for the reaction dp → 3 He π 0 does not show any structure which could originate from the decay of 3 He– η bound state. We measured also the threshold excitation curve for the dp → 3 He X process, however, contrary to the SATURNE results, we observe no cusp near the η threshold.
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