  We present a measurement of the fundamental parameter of the standard model,
the weak mixing angle, in $p\bar{p}\rightarrow Z/\gamma^{*}\rightarrow
e^{+}e^{-}$ events at a center of mass energy of 1.96 TeV, using data
corresponding to 9.7 fb$^{-1}$ of integrated luminosity collected by the D0
detector at the Fermilab Tevatron. The effective weak mixing angle is extracted
from the forward-backward charge asymmetry as a function of the invariant mass
around the Z boson pole. The measured value of
$\sin^2\theta_{\text{eff}}^{\text{$\ell$}}=0.23147 \pm 0.00047$ is the most
precise measurement from light quark interactions to date, with a precision
close to the best LEP and SLD results.
