Measurement of the forward-backward charge asymmetry and extraction of sin(2)theta(eff)(W) in p(p)over-bar -> Z/gamma(*)+X -> e(+)e(-)+X events produced at root s=1.96 TeV
Measurement of the forward-backward charge asymmetry and extraction of sin(2)theta(eff)(W) in p(p)over-bar -> Z/gamma(*)+X -> e(+)e(-)+X events produced at root s=1.96 TeV
Faculty of Science (FNWI) - Institute of Physics (IoP) - Institute for High Energy Physics (IHEF)
Abstract
We present a measurement of the forward-backward charge asymmetry (A(FB)) in p(p)over-bar -> Z/gamma(*)+X -> 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(2)theta(eff)(W)=0.2326 +/- 0.0018(stat)+/- 0.0006(syst).