Speaker
Description
Unravelling the mystery of neutrino masses is one of the top priorities in particle physics and tremendous model building efforts have been devoted to exploring new physics beyond the Standard Model (BSM) in order to state the puzzle succinctly. In this work, we consider a simple extension of the standard model of particle physics (SM) — a class of models called Two-Higgs Doublet Model with Lepton number (2HDML) where a second Higgs doublet and right-handed neutrino/heavy neural lepton, both carrying lepton number, are introduced. With the breaking of lepton number at the electroweak scale, the right-handed neutrino/heavy neural lepton is naturally light and the nonzero neutrino masses are generated via Type-1 seesaw mechanism. This talk presents the construction and the phenomenology of such 2HDML model and discusses constraints on the 2HDM parameter space such as those derived from the CP-even Higgs exotic decays.
