1. Kernforschungszentrum Karlsruhe, Germany;2. Universität Karlsruhe, Germany
Abstract:
The differential cross sections of the reactions e+e? → e+e? and e+e? → λλ are measured at energies between 33.0 and 36.7 GeV. The results agree with the predictions of quantum electrodynamics. A comparison with the standard model of electroweak interaction yields sin2θW = 0.25 ± 0.13.