B -> X_s γand B^+ -> l^+ νin the 2HDM type III

Details B -> X_s γand B^+ -> l^+ νin the 2HDM type III B -> X_s γand B^+ -> l^+ νin the 2HDM type III

2005-09-07

arxiv.org/abs/hep-ph/0509072v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

We consider the Two Higgs Doublet Model (2HDM) of type III which leads to Flavour Changing Neutral Currents (FCNC) at tree level. In the framework of this model we calculate the NLO contribution for b->s \gamma and the branchings for the meson decays B^+ -> l^+ \nu. We examine the limits on the new parameters \lambda_{bb} and M_{H^\pm}. We take into account the relationship between \lambda_{tt} and \lambda_{bb} coming from the validness of perturbation theory.

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