Measurement of the Forward-Backward Charge Asymmetry from W --> e nu Production in p anti-p Collisions at s**(1/2) = 1.96 TeV

Abstract

We report a measurement of the forward-backward charge asymmetry of electrons from W boson decays in p anti-p collisions at s**(1/2) = 1.96 TeV using a data sample of 170 pb-1 collected by the Collider Detector at Fermilab. The asymmetry is measured as a function of electron rapidity and transverse energy and provides new input on the momentum fraction dependence of the u and d quark parton distribution within the proton.

The Acknowledgements changed. 18 pages, 5 figures, 1 table; Previous comments: This is the version of the paper, which is accepted by Phys. Rev. D Rapid Communications for publication. Only minor changes to the text. 18 pages, 5 figures, 1 table; Previous comments: 18 pages, 5 figures, 1 table, To be submitted to Phys. Rev. D Rapid Communications