Measurement of spin correlation in $t\bar{t}$ production using dilepton final states
(2011) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 702, p. 16 (2011)
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- Abstract
- We measure the correlation between the spin of the top quark and the spin of the anti-top quark in tt¯→W+bW−b¯→ℓ+νbℓ−ν¯b¯ final states produced in pp¯ collisions at a center of mass energy s=1.96 TeV , where ℓ is an electron or muon. The data correspond to an integrated luminosity of 5.4 fb −1 and were collected with the D0 detector at the Fermilab Tevatron collider. The correlation is extracted from the angles of the two leptons in the t and t¯ rest frames, yielding a correlation strength C=0.10−0.45+0.45 , in agreement with the NLO QCD prediction within two standard deviations, but also in agreement with the no correlation hypothesis.
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Tanasijczuk, A. J., D0, & et al. (2011). Measurement of spin correlation in $t\bar{t}$ production using dilepton final states. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 702, 16. https://doi.org/10.1016/j.physletb.2011.05.077 (Original work published 2011)