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We present measurements of asymmetries in angular distributions of leptonsproduced in ttbar events in proton-antiproton collisions at the FermilabTevatron Collider. We consider final states where the W bosons from top quarkand antiquark decays both decay into l nu (l=e, mu) resulting in oppositelycharged dilepton final states with accompanying jets. Using 9.7 fb^-1 ofintegrated luminosity collected with the D0 detector, we find the asymmetriesin lepton pseudorapidity compatible with predictions based on the standardmodel.

Measurement of the asymmetry in angular distributions of leptons produced in dilepton ttbar final states in ppbar collisions at sqrt(s)=1.96 TeV