A New Contribution to the Flavour-changing Lepton-photon Vertex
نویسنده
چکیده
We show that the correct perturbation theory for mixed fermion states leads to nonvanishing contributions of the dimension-four ver-tex operators for flavour-changing transitions. Their contributions to the amplitude are of the same order of magnitude as the dimension-five vertex operators. Considerations are valid irrespective of the electroweak model.
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تاریخ انتشار 1997