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research article
Testing an Anomalous Top Quark Via Precision Electroweak Measurements
1991
The effect on electroweak corrections of anomalous interactions of the top quark with the Z0 is studied. Such anomalous terms are expected to arise in the context of dynamical symmetry breaking. It is shown that, depending on m(t), the whole set of radiative-correction parameters can be relevant. This set consists of three observables coming from the vacuum polarization graphs plus the correction to the Z0bbBAR vertex. The recent data coming from collider experiments are used to place bounds on the anomalous terms. The same observables are evaluated in a simple renormalizable model in which the top quark mixes with an isosinglet up-type quark.
Type
research article
Authors
Publication date
1991
Published in
Volume
269
Issue
3-4
Start page
412
End page
418
Subjects
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
September 24, 2010
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