Measurement of the Forward-Backward Charge Asymmetry and Extraction of sin(2) θ[eff over W] in pp-bar→Z/γ*+X→e(+)e(−)+X Events Produced at s√=1.96 TeV

Baringer, Philip S.Bean, AliceHensel, CarstenClutter, Justace RandallMoulik, TaniaWilson, Graham WallaceAbazov, V. M.Abbott, B.Abolins, M.Acharya, B. S.Adams, M.2014-10-292014-10-292008-11-06V. M. Abazov et al. (The D0 Collaboration). (2008). "Measurement of the Forward-Backward Charge Asymmetry and Extraction of sin(2) θ[eff over W] in pp-bar→Z/γ*+X→e(+)e(−)+X Events Produced at s√=1.96 TeV." Physical Review Letters, 101(19):191801. http://dx.doi.org/10.1103/PhysRevLett.101.191801.0031-9007https://hdl.handle.net/1808/15423This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.101.191801.We present a measurement of the forward-backward charge asymmetry (AFB) in pp-bar→Z/γ∗+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. 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)θ[eff over W]=0.2326±0.0018(stat)±0.0006(syst).Measurement of the Forward-Backward Charge Asymmetry and Extraction of sin(2) θ[eff over W] in pp-bar→Z/γ*+X→e(+)e(−)+X Events Produced at s√=1.96 TeVArticle10.1103/PhysRevLett.101.191801openAccess