Measurement of the Electron Charge Asymmetry inpp¯→W+X→eν+XEvents ats=1.96TeV

We present a measurement of the electron charge asymmetry in $p\overline{p}\to W+X\to e\nu +X$ events at a center of mass energy of 1.96 TeV using $0.75{\mathrm{fb}}^{-1}$ 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.