Abstract
Heavy gauge bosons such as W′ are expected to exist in many extensions of the Standard Model. In this paper, the most general Lagrangian for the interaction of W′ with top and bottom quarks is considered. This Lagrangian consists of V–A and V+A structure with in general complex couplings. Such interactions produce an Electric Dipole Moment (EDM) for the top quark at one loop level. We predict the allowed ranges for the mass and couplings of W′ by using the upper limit on the top quark EDM.
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