We present the first study of rapidity gaps in $e^{+}{e}^{-}$ annihilations, using $Z^0$ decays collected by the SLAC Linear Collider Large Detector experiment. Our measured rapidity gap spectra fall exponentially with increasing gap size over five decades, and we observe no anomalous class of events containing large gaps. This supports the interpretation of the large-gap events measured in $p\overline{p}$ and $\mathrm{ep}$ collisions in terms of exchange of color-singlet objects. The presence of heavy flavors or additional jets does not affect these conclusions.

• Received 12 February 1996

DOI:https://doi.org/10.1103/PhysRevLett.76.4886