Effective description of quark mixing

Details Effective description of quark mixing Effective description of quark mixing

2000-07-17

arxiv.org/abs/hep-ph/0007160v2

Phys.Lett. B492 (2000) 98-106

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 1 figure, reference updated, version to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(00)01071-6

We use the effective Lagrangian formalism to describe quark mixing. The new W, Z and H couplings generalizing the CKM matrix and the GIM mechanism fulfil relations and inequalities which allow to discriminate among different SM extensions. As a by-product we give a useful parametrization of the generalized CKM matrix. We also show that the largest possible departures from the SM predictions result from heavy exotic fermions, which can induce, for example, top FCNC large enough to be observable at future colliders.

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