Dark Matter and the Higgs in Natural SUSY

Abstract

Null results from dark matter (DM) direct detection experiments and the 125 GeV Higgs both pose serious challenges to minimal supersymmetry. In this paper, we propose a simple extension of the MSSM that economically solves both problems: a "dark sector" consisting of a singlet and a pair of $SU(2)$ doublets. Loops of the dark sector fields help lift the Higgs mass to 125 GeV consistent with naturalness, while the lightest fermion in the dark sector can be viable thermal relic DM, provided that it is mostly singlet. The DM relic abundance is controlled by s-wave annihilation to tops and Higgsinos, leading to a tight relation between the relic abundance and the spin-dependent direct detection cross section. As a result, the model will be fully probed by the next generation of direct detection experiments. Finally we discuss the discovery potential at LHC Run II.

37 pages, 15 figures, updated LUX limits

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• The minimal fermionic model of electroweak baryogenesis
• Well-tempered n-plet dark matter
• Supergravity Model of Inflation and Explaining IceCube HESE Data via PeV Dark Matter Decay
• Effective Field Theory of Majorana Dark Matter
• The Higgs boson decay into ZZ decaying to identical fermion pairs
• Deciphering the MSSM Higgs Mass at Future Hadron Colliders