Spin correlation in t&tmacr; production from p&pmacr; collisions at radicals = 1.8 TeV
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.
Song
XF
New York University, New York, New York 10003, USA.
Sorin
V
Sosebee
M
Sotnikova
N
Souza
M
Stanton
NR
Steinbruck
G
Stephens
RW
Stevenson
ML
Stichelbaut
F
Stoker
D
Stolin
V
Stoyanova
DA
Strauss
M
Streets
K
Strovink
M
Stutte
L
Sznajder
A
Tarazi
J
Taylor
W
Tentindo-Repond
S
Thomas
TL
Thompson
J
Toback
D
Trippe
TG
Turcot
AS