Cen Zhang, Nicolas Greiner, Scott Willenbrock
We study non-standard top quark couplings in the effective field theory
approach. All nine dimension-six operators that generate anomalous couplings
between the electroweak gauge bosons and the third-generation quarks are
included. We calculate their contributions at tree level and one loop to all
major precision electroweak observables. The calculations are compared with
data to obtain constraints on eight of these operators.
View original:
http://arxiv.org/abs/1201.6670
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