The generation of neutrino masses and the mass hierarchy among the different fermion families are some of the most important problems left unanswered by the Standard Model. The search for consistent explanations for these and other questions has led to the proposal of several Standard Model extensions. A more complete theory can be obtained by extending the original gauge group to $SU(3)_c \otimes SU(M)_L \otimes SU(N)_R \otimes U(1)_X$. The cases with $M=3$ ($N=1$) and $M=N=3$, in particular, contain various attractive features, such as the fact that the number of fermion families is fixed to be three, and the possibility of explaining the parity violation in the Standard Model as a dynamical process. In this research project, making use of the inner advantages of such models, we will explore possible solutions for the open questions mentioned above. In particular, we will focus on building and analyzing models that lead to the needed symmetry breaking and mass generation patterns through minimal scalar sectors, which are more relevant from a phenomenological viewpoint.
News published in Agência FAPESP Newsletter about the scholarship: