High-scale validity of two and three higgs-doublet scenarios

by Nabarun Chakrabarty

Friday 3 Jun 2016, 14:00 → 15:00 Europe/Paris

Salle 149

To the precision LHC has attained so far, it is difficult to predict if the observed Higgs around 125 GeV is the SM Higgs, or a Higgs originating from an extended Higgs sector with an SM alignment. Prototypes of such scenarios are models with extra scalar doublets. While a 2HDM is important from the flavor physics perspective, a 3HDM too can turn useful in predicting the observed fermion mass hierarchy and the mixings. We have investigated some such models from the perspective of high-scale validity under renormalization group. Apart from requiring that each of these models furnishes a Higgs @125 GeV, we have also imposed constraints coming from oblique parameters, signal strengths, dark matter observables and also neutrino mass. The results generate useful insight about the viability of these models.