We present a measurement of sigma(p anti-p --> W) x B(W --> e nu) at
s**(1/2) = 1.96 TeV, using electrons identified in the forward region (1.2 <
|eta| <2.8) of the CDF II detector. The data correspond to an integrated
luminosity of 223 pb-1. We measure sigma x B = 2796 +/-
13(stat)+95_-90(syst) +/- 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 R_exp = 0.925
+/- 0.006(stat) +/- 0.032(syst), consistent with theoretical predictions
using CTEQ and MRST parton distribution functions.
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Updated: Friday, 2007 June 29 08:43:41 CDT automatically from input from Carol Picciolo