Measurement of the forward-backward charge asymmetry and extraction of sin^2Theta^{eff}_W in ppbar -> Z/γ^{*}+X -> e+e+X events produced at \sqrt{s}=1.96 TeV

Details Measurement of the forward-backward charge asymmetry and extraction of sin^2Theta^{eff}_W in ppbar -> Z/γ^{*}+X -> e+e+X events produced at \sqrt{s}=1.96 TeV Measurement of the forward-backward charge asymmetry and extraction of sin^2Theta^{eff}_W in ppbar -> Z/γ^{*}+X -> e+e+X events produced at \sqrt{s}=1.96 TeV

2008-04-20

arxiv.org/abs/0804.3220v2

Phys.Rev.Lett.101:191801,2008

Physics

High Energy Physics

High Energy Physics - Experiment

7 Pages, 1 Figure, 3 Tables, Accepted by Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.101.191801

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 $sin^2Theta^{eff}_W = 0.2327 \pm 0.0018 (stat.) \pm 0.0006 (syst.)$.

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