Abstract:
We present a measurement of sigma(p[overline p]-->W){\AA}~[script B](W-->enu) at sqrt(s)=1.96 TeV, using electrons identified in the forward region (1.2<|eta|<2.8) of the CDF II detector, in 223 pb-1 of data. We measure sigma{\AA}~[script B]=2796$\pm$13(stat)-90+95(syst)$\pm$162(lum) pb. Combining this result with a previous CDF measurement obtained using electrons in the central region (|eta|<~1), we present the first measurement of the ratio of central-electron to forward-electron W partial cross sections Rexp=0.925$\pm$0.006(stat)$\pm$0.032(syst), consistent with theoretical predictions using Coordinated Theoretical-Experimental Project on QCD (CTEQ) and Martin-Roberts-Stirling-Thorne (MRST) parton distribution functions.