Study of scalars and fermions in models beyond the standard model

Abstract

The Standard Model SM of particle physics is well established with the discovery of the Higgs boson by the independent experiments ATLAS and CMS at LHC in 2012 The properties of the discovered Higgs boson is very similar to the proposed one in the SM and the discovery is considered as a remarkable success of this model In spite of this success many experimental evidences provide hints of some fundamental issues mainly absence of dark matter DM nonzero neutrino mass and hierarchy problem...