Flavor changing neutral currents from lepton and B decays in the two Higgs doublet model
Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia
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Constraints on the whole spectrum of lepton flavor violating vertices are shown in the context of the standard two Higgs doublet model. The vertex involving the e- mixing is much more constrained than the others, and the decays proportional to such a vertex are usually very suppressed. On the other hand, bounds on the quark sector are obtained from leptonic decays of the B d,s 0 mesons and from . We emphasize that although the B d 0- mixing restricts severely the d-b mixing vertex, the upper bound for this vertex could still give a sizable contribution to the decay with respect to the standard model contribution, from which we see that such a vertex could still play a role in the phenomenology.
© Springer-Verlag, 2005