Measurement of the forward-backward asymmetry in top-antitop quark production in proton-antiproton collisions

Details Measurement of the forward-backward asymmetry in top-antitop quark production in proton-antiproton collisions Measurement of the forward-backward asymmetry in top-antitop quark production in proton-antiproton collisions

2011-10-10

arxiv.org/abs/1110.2062v1

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 7 figures, DPF conference

Scientific paper

We present a new measurement of the forward-backward asymmetry in ttbar production in ppbar collisions in the lepton+jets channel at D0. We measure asymmetries from two different observables and unfold the data to allow the results to be compared to standard model predictions. For the unfolded asymmetry based on the Delta-y variable, we measure (19.6 +/- 6.5)%, compared with an MC@NLO-based prediction of (5.0 +/- 0.1)%. We also discuss the correlation between the asymmetry and the transverse momentum of the ttbar system.

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