Research Papers in Physics and Astronomy


Date of this Version

March 2005


Published by American Physical Society. Phys. Rev. D 71, 051104 (2005). Copyright © 2005 American Physical Society. Permission to use.


We report a measurement of the forward-backward charge asymmetry of electrons from W boson decays in pp̅ collisions at √s =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 functions within the proton.

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