First Measurement of the Ratio of Central-Electron to Forward-Electron W Partial Cross Sections in pp¯ Collisions at s=1.96 TeV Academic Article uri icon


  • We present a measurement of sigma(pp[over] --> W) x B(W --> e nu) at (square root)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 x B = 2796 +/- 13(stat)(-90)(+95)(syst) +/- 162(lum) pb. Combining this result with a previous CDF measurement obtained using electrons in the central region (|eta| approximately < 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 Coordinated Theoretical-Experimental Project on QCD (CTEQ) and Martin-Roberts-Stirling-Thorne (MRST) parton distribution functions.

author list (cited authors)

  • Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M. G., Amerio, S., ... Zucchelli, S.

citation count

  • 2

publication date

  • June 2007