Abstract
We discuss possible deviations from QED produced by a virtual excited spin-3/2 lepton in the reaction ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}2\ensuremath{\gamma}.$ Data recorded by the OPAL Collaboration at a c.m. energy $\sqrt{s}=183 \mathrm{GeV}$ are used to establish bounds on the nonstandard-lepton mass and coupling strengths.
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