Top Quark Spin Correlations at the Tevatron

Understand

Recent measurements of the correlation between the spin of the top and the spin of the anti-top quark produced in proton anti-proton scattering at a centre of mass energy of 1.96 TeV by the CDF and D0 collaborations are discussed.

• Using up to 4.3 fb^-1 of data taken with the CDF and D0 detectors the spin correlation parameter C, the degree to which the spins are correlated, is measured in dileptonic and semileptonic final states.
• The measurements are found to be in agreement with Standard Model predictions.