Naturalness bounds in extensions of the MSSM without a light Higgs boson

Abstract

Adopting a bottom-up point of view, we make a comparative study of the simplest extensions of the MSSM with extra tree level contributions to the lightest Higgs boson mass. We show to what extent a relatively heavy Higgs boson, up to 200-350 GeV, can be compatible with data and naturalness. The price to pay is that the theory undergoes some change of regime at a relatively low scale. Bounds on these models come from electroweak precision tests and naturalness, which often requires the scale at which the soft terms are generated to be relatively low.

18 pages, 5 figures. v2: minor revision, added references. v3,v4: some numerical corrections

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• SUSY Faces its Higgs Couplings
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• Beyond the standard MSSM