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

A. Abulencia et al. (CDF Collaboration)
Phys. Rev. Lett. 98, 251801 – Published 20 June 2007

Abstract

We present a measurement of σ(pp¯W)×B(Weν) at s=1.96TeV, using electrons identified in the forward region (1.2<|η|<2.8) of the CDF II detector, in 223pb1 of data. We measure σ×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 (|η|1), we present the first measurement of the ratio of central-electron to forward-electron W partial cross sections Rexp=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.

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  • Received 17 February 2007

DOI:https://doi.org/10.1103/PhysRevLett.98.251801

©2007 American Physical Society

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Vol. 98, Iss. 25 — 22 June 2007

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