Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-12-16
Phys.Rev. D68 (2003) 035001
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, 4 figures, Universidad Nacional de Colombia. typos corrected
Scientific paper
10.1103/PhysRevD.68.035001
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 can use an appropriate form of the Yukawa Lagrangian that makes the type II model limit of the general type III couplings apparent. This way is useful in order to compare with the experimental data which is model dependent. The analytical expressions of the partial width $\Gamma (t \to H^+ b) $ are derived and we compare with the data available at this energy range. We examine the limits on the new parameters $\lambda_{ij}$ from the validness of perturbation theory.
Martinez Rafael
Rodriguez J.-Alexis
Rozo M.
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