Speaker
Description
In Supersymmetry, the lightest neutralino turns out to be a promising WIMP dark matter(DM) candidate. In the Minimal Supersymmetric Standard Model(MSSM), a pure neutralino state can be a thermal DM if it has mass $\cal{O}$(1) TeV. So a WIMP dark matter(DM) of mass $\cal{O}$(100) GeV or less should be a "tempered neutralino". Taking into account current constraints from direct detection(DD) experiments, it turns out that this DM should mostly be a bino-dominated "mild-tempered" neutralino, where a small Higgsino component is necessary to achieve the observed relic density. This DM candidate can be produced indirectly through heavier Higgsino-like electroweakino states, which, in turn, can appear from the decay of top-squark. Keeping that in mind, we shall discuss how in a DM motivated MSSM scenario at the LHC, a common robust feature is the presence of the Standard Model(SM) Higgs boson, along with $\rm t\bar{t}$ and the indispensable $\rm E{\!\!\!/}_T$. We shall also present how this "mild-tempered'' neutralino DM can be probed at the LHC through a Higgs-mediated channel at the center of mass energy $\rm \sqrt{s}= 13~TeV$ and integrated luminosity options $\cal{L}$$\rm =300~fb^{-1}$ and $\rm 3000~fb^{-1}$.
