A natural SM-like 126 GeV Higgs via non-decoupling D-terms

Abstract

Accommodating both a 126 GeV mass and Standard Model (SM) like couplings for the Higgs has a fine tuning price in supersymmetric models. Examples are the MSSM, in which SM-like couplings are natural, but raising the Higgs mass up to 126 GeV requires a considerable tuning, or the NMSSM, in which the situation is reversed: the Higgs is naturally heavier, but being SM-like requires some tuning. We show that models with non-decoupling D-terms alleviate this tension - a 126 GeV SM-like Higgs comes out basically with no fine tuning cost. In addition, the analysis of the fine tuning of the extended gauge sector shows that naturalness requires the heavy gauge bosons to likely be within the LHC run II reach.

20 pages, 3 figures; v2: clarifications and one appendix added, version published in PRD

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Cited by in corpus (4)

• Supersymmetric D-term Twin Higgs
• Bayesian analysis and naturalness of (Next-to-)Minimal Supersymmetric Models
• Impact of an extra gauge interaction on naturalness of supersymmetry
• A closer look at non-decoupling D-Terms