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

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 $e-\tau$ mixing is much more constrained than the others, and the decays proportional to such vertex are usually very supressed. On the other hand, bounds on the quark sector are obtained from leptonic decays of the $B_{d,s}^0$ mesons and from $\Delta M_{B_d^0}$. We emphasize that although the $B_d^0-{\bar{B}}_d^0$ mixing restricts severely the mixing vertex, the upper bound for this vertex could still give a sizeable contribution to the decay $B_d^0\to \mu \bar{\mu }$ respect to the standard model contribution, from which we see that such vertex could still play a role in the phenomenology.

9 pages, 2 figures, LaTeX2e. Minor typos corrected. References added and corrected. Introduction changed

References in corpus (3)

• Relations between ΔM_{s,d} and B_{s,d}\to μ\barμin Models with Minimal Flavour Violation
• Phenomenology of lepton flavor violation in 2HDM(III) from (g-2)_mu and leptonic decays
• Technicolor corrections on $B_{s,d}\to \gamma \gamma$ decays in QCD factorization

Cited by in corpus (14)

• Theory and phenomenology of two-Higgs-doublet models
• Rare $B$ Decays as Tests of the Standard Model
• Search for the Decays $B_{(s)}^0\to e^{+}{\mu }^{-}$ and $B_{(s)}^0\to e^{+}{e}^{-}$ in CDF Run II
• Search for the lepton-flavour violating decays $B_s^0\to e^{\pm }{\mu }^{\mp }$ and $B^0\to e^{\pm }{\mu }^{\mp }$
• τ^- \to μ^- π^0(η,η') Decays in New Physics Scenarios beyond the Standard Model
• Relating B_s Mixing and B_s -> mu+mu- with New Physics
• Study of B0 --> l+l'- decays (l,l' = e,mu)
• Improving bounds on flavor changing vertices in the two Higgs doublet model from $B-\bar{B}$ mixing
• Flavor-changing neutral current in production and decay of pseudoscalar mesons in a type III two-Higgs-doublet-model with four-texture Yukawa couplings
• Search for new physics from $B\to \pi \varphi$
• Unitarity constraints for Yukawa couplings in the two Higgs doublet model type III
• Implications for new physics from ${\bar{B}}^0\to {\pi }^0{\pi }^0$ and ${\bar{B}}^0\to {\bar{K}}^0{K}^0$
• Scalar-pseudoscalar interactions in neutrino-electron scattering
• Constraints on the charged Higgs boson of the two Higgs doublet model type III