Probing mild-tempered neutralino dark matter through top-squark production at the LHC.

Constraints from various dark matter (DM) direct detection experiments and
Planck measurements exclude a substantial region of parameter space of the minimal
supersymmetric standard model (MSSM). However, considering DM of mass ~ O(100)
GeV, a ``mild-tempered'' neutralino with dominant bino composition and a little
admixture of Higgsino is found to be a viable candidate. The situation differs a little if
the parameter space corresponds to ``blind spots” that are not sensitive to the direct
detection experiments. The mild-tempered neutralino can be efficiently produced at the
LHC through top-squark production and its subsequent decays with the SM like Higgs
boson in the final state. This channel is found to be sensitive also to the blind spot
scenario. In this talk, I shall discuss the nature of lightest neutralino in the allowed
parameter space of MSSM that provides a DM solution. Further, I shall talk about how
the mild-tempered neutralino including the blind spot scenario can be probed at the
LHC.