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

CollaborationWith : Campanelli, Mario / Clark, Allan Geoffrey / Hamilton, Andrew / Lefevre, Régis / Moed, Shulamit / Sfyrla, Anna / Shreyber, Irina / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review Letters. 2007, vol. 98, no. 25, p. 251801
Abstract We present a measurement of σ(pp→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)+95−90(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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CDF COLLABORATION. First Measurement of the Ratio of Central-Electron to Forward-Electron W Partial Cross Sections in pp Collisions at s√=1.96  TeV. In: Physical Review Letters, 2007, vol. 98, n° 25, p. 251801. https://archive-ouverte.unige.ch/unige:38403

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Deposited on : 2014-07-01

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