Speaker
Description
We develop a 3-3-1 model with new charged leptons where the cancellation
of gauge anomalies fixes the number of fermion generations. Symmetry
breaking is achieved effectively with two scalar triplets so that the
scalar spectrum at the TeV scale contains just a charged and two CP even
scalars. Such a scalar sector is simpler than the one in the Two Higgs
Doublet Model, hence more attractive for phenomenological studies, and
has no flavor changing neutral currents (FCNC) mediated by scalars
except for the ones due to the mixing of Standard Model (SM) fermions
with heavy fermions. We identify a global residual symmetry of the model
which is later broken explicitly, with the introduction of effective
operators, in such a way that all fermions become massive. The masses so
generated require less fine-tuning for most of the SM fermions, and FCNC
are naturally suppressed by the small mixing between the third family of
quarks and the rest. The effective setting is justified by an
ultraviolet completion of the model from which the effective operators
emerge naturally. A detailed particle mass spectrum is presented, and an
analysis of the Z' production at the LHC run II is performed.
