First Measurement of the Ratio of Central-Electron to Forward-Electron W Partial Cross Sections in p-pbar Collisions at sqrt{s} = 1.96 TeV

Details First Measurement of the Ratio of Central-Electron to Forward-Electron W Partial Cross Sections in p-pbar Collisions at sqrt{s} = 1.96 TeV First Measurement of the Ratio of Central-Electron to Forward-Electron W Partial Cross Sections in p-pbar Collisions at sqrt{s} = 1.96 TeV

2007-02-23

arxiv.org/abs/hep-ex/0702037v2

Phys.Rev.Lett.98:251801,2007

Physics

High Energy Physics

High Energy Physics - Experiment

3 figures, Published in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.98.251801

We present a measurement of sigma(p-pbar -> W) x 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 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 Coordinated Theoretical-Experimental Preoject on QCD (CTEQ) and Martin-Roberts-Stirling-Thorne (MRST) parton distribution functions.

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