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Measurement of spin correlation in ttbar production using dilepton final states

SYSNO ASEP	0367775
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Measurement of spin correlation in ttbar production using dilepton final states
Author(s)	Abazov, V. M. (RU) Abbott, B. (US) Acharya, B.S. (IN) Kupčo, Alexander (FZU-D)_{RID, ORCID} Lokajíček, Miloš (FZU-D)_{RID, ORCID}
Number of authors	427
Source Title	Physics Letters. B. - : Elsevier - ISSN 0370-2693 Roč. 702, č. 1 (2011), 16-23
Number of pages	8 s.
Language	eng - English
Country	NL - Netherlands
Keywords	D0 ; Tevatron ; spin ; lepton ; QCD ; top quark
Subject RIV	BF - Elementary Particles and High Energy Physics
R&D Projects	LA08047 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z10100502 - FZU-D (2005-2011)
UT WOS	000294142600004
DOI	10.1016/j.physletb.2011.05.077
Annotation	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 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
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2013

Number of the records: 1