Seminarium Kosmologia i Fizyka Cząstek

If weak scale supersymmetry (SUSY) is to somehow explain the radiative stability of the Higgs boson mass, it is likely that we have to resort to non-minimal variants of SUSY models. I will show that under the - commonly adopted - assumption that the dark matter of the universe is comprised of neutralinos, recent limits from direct detection experiments as well as dark matter density measurements place stringent bounds on the naturalness of minimal supersymmetric models. Moreover, even non-minimal models introducing moderately decoupled new physics that can be described through an Effective Field Theory formalism face similar problems.