The Light and Heavy Higgs Interpretation of the MSSM

Abstract

We perform a parameter scan of the phenomenological Minimal Supersymmetric Standard Model (pMSSM) with eight parameters taking into account the experimental Higgs boson results from Run I of the LHC and further low-energy observables. We investigate various MSSM interpretations of the Higgs signal at 125 GeV. First, we consider the case where the light CP-even Higgs boson of the MSSM is identified with the discovered Higgs boson. In this case it can impersonate the SM Higgs-like signal either in the decoupling limit, or in the limit of alignment without decoupling. In the latter case, the other states in the Higgs sector can also be light, offering good prospects for upcoming LHC searches and for searches at future colliders. Second, we demonstrate that the heavy CP-even Higgs boson is still a viable candidate to explain the Higgs signal - albeit only in a highly constrained parameter region, that will be probed by LHC searches for the CP-odd Higgs boson and the charged Higgs boson in the near future. As a guidance for such searches we provide new benchmark scenarios that can be employed to maximize the sensitivity of the experimental analysis to this interpretation.

71 pages, 8 tables, 28 figures; v2: Extended discussion on the BR(b->s gamma) constraint and added Appendix on parameter tuning in the alignment without decoupling scenario. Matches version to appear in EPJ C

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• Impact of Vacuum Stability Constraints on the Phenomenology of Supersymmetric Models
• Unveiling Hidden Physics at the LHC
• The forgotten channels: charged Higgs boson decays to a $W^{\pm }$ and a non-SM-like Higgs boson
• MSSM Higgs Benchmark Scenarios for Run 2 and Beyond: the low $\tan \beta$ region
• The "96 GeV excess" at the LHC
• The Not-So-Well Tempered Neutralino
• The NMSSM is within Reach of the LHC: Mass Correlations & Decay Signatures
• The Impact of Two-Loop Effects on the Scenario of MSSM Higgs Alignment without Decoupling
• Reduction of Couplings and its application in Particle Physics
• HL-LHC and ILC sensitivities in the hunt for heavy Higgs bosons
• The $tZH$ and $tZh$ production in 2HDM: Prospects for discovery at the LHC
• Review of LHC experimental results on low mass bosons in multi Higgs models
• Probing GeV-scale MSSM neutralino dark matter in collider and direct detection experiments
• High Precision Calculations of the Higgs Boson Mass
• Interpreting 95 GeV di-photon/$b\bar{b}$ excesses as a lightest Higgs boson of the MRSSM
• Muon g-2, Neutralino Dark Matter and Stau NLSP
• Perspectives and Outlook from HEP Window on the Universe
• Updates and New Results in Models with Reduced Couplings
• Probing Unified Theories with Reduced Couplings at Future Hadron Colliders
• Decadal Mission for the New Physics Higgs/Flavor Era
• Charged Higgs decay to $W^{\pm }H$ at a high energy lepton collider
• Theoretical concepts and measurement prospects for BSM trilinear couplings: a case study for scalar top quarks
• Observability of 2HDM charged Higgs boson in a misaligned scenario
• From Veltman's conditions to Finite Unification
• Exploring Heavy Higgs Bosons at a 100 TeV Hadron Collider within the Semi-Constrained NMSSM