Combined Forward-Backward Asymmetry Measurements in Top-Antitop Quark Production at the Tevatron

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 root 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 A(FB)(t (t) over bar) = 0.128 +/- 0.025. The combined inclusive and differential asymmetries are consistent with recent standard model predictions. ; Department of Energy; National Science Foundation (U.S.A.); Australian Research Council (Australia); National Council for the Development of Science and Technology; Carlos Chagas Filho Foundation; European Union community Marie Curie Fellowship Contract [302103]; [DE-AC02-07CH11359] ; This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.