Search for charge-43e particles produced in e+e- annihilations

In a search for heavy charge-$\frac{4}{3}e$ particles produced in ${e}^{+}{e}^{\ensuremath{-}}$ collisions at a center-of-mass energy of 29 GeV, no candidate events were found in 22 ${\mathrm{pb}}^{\ensuremath{-}1}$ of data collected by the time projection chamber at PEP. Upper limits are established on the inclusive cross section for the production of charge-$\frac{4}{3}e$ particles in the mass range of 1-10 GeV/${\mathit{c}}^{2}$.