Eur. Phys. J. C (2005) 41: 305-310
https://doi.org/10.1140/epjc/s2005-02198-8

theoretical physics

Flavor changing neutral currents from lepton and B decays in the two Higgs doublet model

Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia

^* e-mail: radiazs@unal.edu.co

Abstract

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.