Top anti-top Asymmetries at the Tevatron and the LHC

Abstract

The heaviest known elementary particle today, the top quark, has been discovered in 1995 by the CDF and D0 collaborations at the Tevatron proton antiproton collider at Fermilab. Recently, the CDF and D0 collaborations have studied the forward-backward asymmetry in ttbar events, resulting in measured values larger than the standard model prediction. With the start of the LHC at CERN in 2010, a new top quark factory has opened and asymmetry measurements in ttbar have also been performed in a proton proton environment with higher collision energy. No deviations from the standard model have been noticed so far in the measurements of ATLAS and CMS. This article discusses recent results of asymmetry measurements in ttbar events of the ATLAS, CDF, CMS and D0 collaborations.

11 pages, 4 figures, proceedings for PIC2012, Strbske Pleso, Slovakia

References in corpus (4)

• Measurement of the top quark forward-backward production asymmetry and its dependence on event kinematic properties
• Top quark and leptonic charge asymmetries for the Tevatron and LHC
• Combination of the top-quark mass measurements from the Tevatron collider
• Measurement of Leptonic Asymmetries and Top Quark Polarization in ttbar Production