Ponente
Jorge Romão
(Instituto Superior Técnico)
Descripción
We consider models with an extended Higgs sector and look for signals
at the LHC. By looking at a combination of three decays, involving the
125 GeV Higgs boson, the Z boson and at least one more scalar, an
indisputable signal of CP-violation arises. We use a complex
two-Higgs doublet model as a reference model and present some
benchmark points that have passed all current experimental and
theoretical constraints, and that have cross sections large enough to
be probed at LHC during run 2.
Neutrino mass generation through the Higgs mechanism provides a new
theoretically consistent and experimentally viable paradigm. We
illustrate this by describing the main features of the electroweak
symmetry breaking sector of the simplest type-II seesaw model with
spontaneous breaking of lepton number.
We perform an analysis of the sensitivities of Higgs boson searches at
the ongoing ATLAS and CMS experiments at the LHC, including not only
the new contributions to the decay channels present in the Standard
Model (SM) but also genuinely non-SM Higgs boson decays, such as
invisible Higgs boson decays to majorons. We find sensitivities that
are likely to be reached soon at LHC
Autor primario
Jorge Romão
(Instituto Superior Técnico)
