We present a measurement of the forward-backward charge asymmetry of the process $p\overline{p}\to Z^0/\gamma +X,Z^0/\gamma \to e^{+}{e}^{-}$ at $M_{\mathrm{ee}}>M_Z,$ using $110{\mathrm{pb}}^{-1\mathrm{}}$ of data at $\sqrt{s}=1.8\mathrm{TeV}$ collected at the Collider Detector at Fermilab. The measured charge asymmetries are $0.43\pm 0.10$ in the invariant mass region $M_{\mathrm{ee}}>105\mathrm{GeV}{/c}^2,$ and $0.070\pm 0.016$ in the region $75<\mathrm{}{M}_{\mathrm{ee}}<105\mathrm{GeV}{/c}^2$. These results are consistent with the standard model values of $0.528\pm 0.009$ and $0.052\pm 0.002$, respectively.

• Received 22 March 1996

DOI:https://doi.org/10.1103/PhysRevLett.77.2616