Modelos MULTI-HIGGS.

Abstract

It is a consensus that the Standard Model is not the last word in particle theory elentares because it does not answer several pertinent questions, which we can exemplify: quantization of charge, mass for neutrinos, number of generations fermions, matter and dark energy, and clues about over the channel H→gg. In this work we conducted a study on some extensions of the Standard Model. To do this we chose a particular problem without solution in SM, and an extension to a proposed solution. For the model with Higgs Doublet, we have a candidate for dark matter. The Higgs Triplet Model, motivated by Type-II Seesaw Model, enables mass terms for the neutrinos in the eV scale. The Reduced Minimal 331 Model, among others, proposes a solution to the excess photon in the channel H→gg. Finally, the model also provides processes FCNC at tree level.