Search for Singly Produced Supersymmetric Electrons ine+e−Interactions

A search for supersymmetric electron production via the reaction $e^{+}{e}^{-}\to e^{\pm }\tilde{\gamma }{\tilde{e}}^{\mp }$ followed by the decay ${\tilde{e}}^{\mp }\to e^{\mp }\tilde{\gamma }$ has been performed with the MAC detector at the electron-positron storage ring PEP. No candidates were found in a sample corresponding to an integrated luminosity of 36.4 ${\mathrm{pb}}^{-1\mathrm{}}$. For a massless $\tilde{\gamma }$ this corresponds to a lower limit on the $\tilde{e}$ mass of 22.4 GeV/${\mathit{c}}^2$ at the 95% confidence level.