title: Spin correlation in t&tmacr; production from p&pmacr; collisions at radicals = 1.8 TeV
abstract: The D0 collaboration has performed a study of spin correlation in t&tmacr; production for the process t&tmacr;-->bW(+)&bmacr;W-, where the W bosons decay to enu or &mgr;nu. A sample of six events was collected during an exposure of the D0 detector to an integrated luminosity of approximately 125 pb(-1) of sqrt[s] = 1.8 TeV p&pmacr; collisions. The standard model (SM) predicts that the short lifetime of the top quark ensures the transmission of any spin information at production to the t&tmacr; decay products. The degree of spin correlation is characterized by a correlation coefficient kappa. We find that kappa>-0.25 at the 68% confidence level, in agreement with the SM prediction of kappa = 0.88.
authors.affiliation: New York University, New York, New York 10003, USA.
authors.initials: XF
authors.lastname: Song
authors.initials: V
authors.lastname: Sorin
authors.initials: M
authors.lastname: Sosebee
authors.initials: N
authors.lastname: Sotnikova
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authors.lastname: Souza
authors.initials: NR
authors.lastname: Stanton
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authors.lastname: Steinbruck
authors.initials: RW
authors.lastname: Stephens
authors.initials: ML
authors.lastname: Stevenson
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authors.lastname: Stichelbaut
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authors.lastname: Stoker
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authors.lastname: Stolin
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authors.lastname: Stoyanova
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authors.lastname: Strauss
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authors.lastname: Streets
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authors.lastname: Strovink
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authors.lastname: Sznajder
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authors.lastname: Taylor
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authors.lastname: Tentindo-Repond
authors.initials: TL
authors.lastname: Thomas
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authors.lastname: Thompson
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authors.lastname: Toback
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authors.lastname: Trippe
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authors.lastname: Turcot