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We report on a CDF measurement of the total cross section and rapiditydistribution, $d\sigma/dy$, for $q\bar{q}\to \gamma^{*}/Z\to e^{+}e^{-}$ eventsin the $Z$ boson mass region ($66<M_{ee}<116$GeV/c$^2$) produced in $p\bar{p}$collisions at $\sqrt{s}=1.96$TeV with 2.1fb$^{-1}$ of integrated luminosity.The measured cross section of $257\pm16$pb and $d\sigma/dy$ distribution arecompared with Next-to-Leading-Order(NLO) andNext-to-Next-to-Leading-Order(NNLO) QCD theory predictions with CTEQ andMRST/MSTW parton distribution functions (PDFs). There is good agreement betweenthe experimental total cross section and $d\sigma/dy$ measurements withtheoretical calculations with the most recent NNLO PDFs.

Measurement of $d\sigma/dy$ of Drell-Yan $e^+e^-$ pairs in the $Z$ Mass Region from $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV