Speaker
Description
Non-abelian vector boson dark matter (DM), although not widely studied, offers very important phenomenological outcome. In this talk, we highlight some possibilities that can be accommodated in an $SU(2)$ extension of the the Standard Model (SM). One important feature of DM of such kind is realized via $t$-channel annihilation for relic abundance and $s$-channel direct search interaction, that helps the DM survive severe direct search guillotine, which has otherwise excluded many simple DM realizations. In another scenario, we explore a multipartite DM framework, where, in addition to the non-abelian vector boson DM, a scalar DM may exist and the DM-DM interaction alters the viable parameter space quite significantly. We also elaborate signatures of these DM scenarios at the Large Hadron Collider (LHC) and show that multi-lepton final states offer as a good probe over direct searches. In addition, generation of correct neutrino masses, unification of such extensions in a high scale $E(6)$ framework via consistent intermediate symmetries and freeze-in production of DM are also discussed.
