Research Papers in Physics and Astronomy


Date of this Version



Published in PHYSICAL REVIEW LETTERS 101, 211801 (2008). Copyright © 2008 The American Physical Society. Used by permission.


We present a measurement of the electron charge asymmetry in ppW + X + X events at a center of mass energy of 1.96 TeV using 0.75 fb-1 of data collected with the D0 detector at the Fermilab Tevatron Collider. The asymmetry is measured as a function of the electron transverse momentum and pseudorapidity in the interval (-3.2, 3.2) and is compared with expectations from next-to-leading order calculations in perturbative quantum chromodynamics. These measurements will allow more accurate determinations of the proton parton distribution functions.

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