Abstract

The reactions e +e −→ μ + μ − γ and e +e −→e +e − γ have been studied with the CELLO detector at the PETRA storage ring. Data have been collected from s =14 GeV up to46.8 GeV . In a Dalitz plot analysis of the data, good agreement is found with QED, except for the region Mx μγ e>0.8 where the probability that QED describes the high energy data is at the percent level.

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