The invisible decay of Higgs boson in the context of a thermal and non-thermal relic in MSSM

Understand

We study the decay of 125 GeV Higgs boson to light LSP neutralino in the phenomenological minimal supersymmetric standard model in the context of collider searches and astrophysical experiments.

• We consider the parameter space for light neutralinos that can be probed via the invisible Higgs decays and higgsino searches at the ILC.
• We consider the cases where the light neutralino is compatible with the observed relic density or where the thermal relic is over-abundant, pointing to non-standard cosmology.
• In the former case, when the neutralino properties give rise to under-abundant relic density, the correct amount of relic abundance is assumed to be guaranteed by either additional DM particles or by non-thermal cosmology.