Measurement of $d\sigma /dy$ for high mass Drell-Yan $e^{+}{e}^{-}$ pairs from $p\overline{p}$ collisions at $\sqrt{s}=1.8\mathrm{}$ TeV

We report on the first measurement of the rapidity distribution $d\sigma /dy$ over nearly the entire kinematic region of rapidity for $e^{+}{e}^{-}$ pairs in both the Z-boson region of $66<\mathrm{}{M}_{\mathrm{ee}}<116\mathrm{}\hspace{0.5em}\mathrm{GeV}{/c}^2$ and in the high mass region of $M_{\mathrm{ee}}>116\mathrm{}\hspace{0.5em}\mathrm{GeV}{/c}^2.$ The data sample consists of 108 ${\mathrm{pb}}^{-1}$ of $p\overline{p}$ collisions at $\sqrt{s}=1.8\mathrm{}$ TeV taken by the Collider Detector at Fermilab during 1992–1995. The total cross section in the Z-boson region is measured to be $252\pm 11$ pb. The measured total cross section and $d\sigma /dy$ are compared with quantum chromodynamics calculations in leading and higher orders.