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Measurement of the forward-backward charge asymmetry and extraction of sin**2 Theta(W)(eff) in p anti-p ---> Z/gamma* + X ---> e+ e- + X events produced at s**(1/2) = 1.96$-TeV.

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Article number191801
<mark>Journal publication date</mark>6/11/2008
<mark>Journal</mark>Physical review letters
Issue number19
Volume101
Number of pages7
Publication StatusPublished
<mark>Original language</mark>English

Abstract

We present a measurement of the forward-backward charge asymmetry (AFB) in ppbar -> 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. AFB 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 AFB measurement to extract the effective weak mixing angle sin^2 ^W _eff = 0.2326 +/- 0.0018(stat) +/- 0.0006 (syst).

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© 2008 The American Physical Society