The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets collected in proton-antiproton collisions at a center-of-mass energy of s=1.96 TeV. We report the results of combinations of the inclusive asymmetries and their differential dependencies on relevant kinematic quantities. The combined inclusive asymmetry is AFBttÌ=0.128±0.025. The combined inclusive and differential asymmetries are consistent with recent standard model predictions.
Combined forward-backward asymmetry measurements in top-antitop quark production at the Tevatron
Manca, G.;
2018-01-01
Abstract
The CDF and D0 experiments at the Fermilab Tevatron have measured the asymmetry between yields of forward- and backward-produced top and antitop quarks based on their rapidity difference and the asymmetry between their decay leptons. These measurements use the full data sets collected in proton-antiproton collisions at a center-of-mass energy of s=1.96 TeV. We report the results of combinations of the inclusive asymmetries and their differential dependencies on relevant kinematic quantities. The combined inclusive asymmetry is AFBttÌ=0.128±0.025. The combined inclusive and differential asymmetries are consistent with recent standard model predictions.| File | Dimensione | Formato | |
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PhysRevLett_120_042001.pdf
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