Abstract
Differential cross sections for the process γp → p η have been measuredd at c.m. angles of 28°, 35° and 42° at incident energies between 2 GeV and 2.8 GeV. Data from an earlier experiment below 2 GeV have been re-analysed and corrected. The whole set of data is compared with the form ( s− M 2) 2 d σ/d t, which fits data at higher energies. There is good agreement above 2 GeV, particularly at the largest angle, but strong departures below.
Published Version
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