Speaker
Description
Non-refutable evidences from galaxy rotation curves, gravitational lensing and cosmic microwave backgroud (CMB) suggests that there exists non-baryonic matter, called dark matter (DM) in the present Universe. The latest data from satellite borne experiment-PLANCK precisely
measure the DM relic to be 26.8% of the total energy budget of the present Universe. However, the standard model of particle physics does not include any viable DM candidate. In this talk, we will discuss the DM to be a mixed state of singlet-doublet (SD) vector-like fermions. The DM stability can be guaranteed by assuming these fermions to be odd under a Z2 symmetry. We will find the parameter space satisfying the DM relic from direct, indirect and collider constraints. We will also discuss how this SD-dark matter can inspire other beyond standard model (BSM) phenomenologies, such as neutrino mass, baryon asymmetry and gravitational waves.