Measurement of spin correlation in ttbar production using dilepton final states

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00367775" target="_blank" >RIV/68378271:_____/11:00367775 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.physletb.2011.05.077" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2011.05.077</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2011.05.077" target="_blank" >10.1016/j.physletb.2011.05.077</a>

Result language
angličtina
Original language name
Measurement of spin correlation in ttbar production using dilepton final states
Original language description
We measure the correlation between the spin of the top quark and the spin of the anti-top quark in (ttbar -> W+ W- b bbar -> l+ nu b l- nubar bbar) final states produced in ppbar collisions at a center of mass energy sqrt(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 tbar rest frames, yielding acorrelation 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
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Project
<a href="/en/project/LA08047" target="_blank" >LA08047: Collaboration on the D0 Experiment at FNAL, U.S.A.</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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