First measurement of the ratio of central-electron to forward-electron **W** partial cross sections in <script type="math/tex">p\overline{p}</script> collisions at <script type="math/tex">\sqrt{s}</script>=1.96 TeV

Abulencia, A.; Van Remortel, N.; et al.

doi:10.1103/PHYSREVLETT.98.251801

Title

First measurement of the ratio of central-electron to forward-electron **W** partial cross sections in $p\overline{p}$ collisions at $\sqrt{s}$ =1.96 TeV

Author

Abulencia, A.

Van Remortel, N.

et al.

Institution/Organisation

CDF Collaboration

Abstract

We present a measurement of σ(pp̅ →W)×B(W→eν) at √s=1.96 TeV, using electrons identified in the forward region (1.2<|η|<2.8) of the CDF II detector, in 223 pb-1 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 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.

Language

English

Source (journal)

Physical review letters. - New York, N.Y., 1958, currens

Publication

New York, N.Y. : American Physical Society , 2007

ISSN

0031-9007 [print]

1079-7114 [online]

DOI

10.1103/PHYSREVLETT.98.251801

Volume/pages