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2011

Evidence for spin correlation in ttbar production

Abazov, V. M.

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We present a measurement of the ratio of events with correlated t and tbar spins to the total number of ttbar events.

This ratio f is evaluated using a matrix-element-based approach in events with a single lepton (electron or muon) and at least four jets.
We analyze ppbar collisions data corresponding to an integrated luminosity of 5.3 fb^-1 collected with the D0 detector at the Fermilab Tevatron collider operating at a center of mass energy $\sqrt{s}=1.96$ TeV.
Combining this result with a recent measurement of f in dilepton final states, we find f in agreement with the standard model.

Evidence for spin correlation in ttbar production · Around

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