Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the forward-backward charge asymmetry and extraction of
  sin^2Theta^{eff}_W in ppbar -> Z/\gamma^{*}+X -> e+e+X events produced at
  \sqrt{s}=1.96 TeV   We present a measurement of the forward-backward charge asymmetry ($A_{FB}$)
in $p\bar{p} \to Z/\gamma^{*}+X \to e^+e^-+X$ events at a center-of-mass energy
of 1.96 TeV using 1.1 fb$^{-1}$ of data collected with the D0 detector at the
Fermilab Tevatron collider. $A_{FB}$ is measured as a function of the invariant
mass of the electron-positron pair, and found to be consistent with the
standard model prediction. We use the $A_{FB}$ measurement to extract the
effective weak mixing angle $sin^2Theta^{eff}_W = 0.2327 \pm 0.0018 (stat.) \pm
0.0006 (syst.)$.

23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th