The NMSSM Close to the R-symmetry Limit and Naturalness in $h\to aa$ Decays for $m_a<2\mb$

Abstract

Dominant decay of a SM-like Higgs boson into particles beyond those contained in the minimal supersymmetric standard model has been identified as a natural scenario to avoid fine tuning in electroweak symmetry breaking while satisfying all LEP limits. In the simplest such extension, the next-to-minimal supersymmetric model, the lightest CP-even Higgs boson can decay into two pseudoscalars. In the scenario with least fine tuning the lightest CP-even Higgs boson has mass of order 100 GeV. In order to escape LEP limits it must decay to a pair of the lightest CP-odd Higgs bosons with Br(h -> aa)>.7 and m_a<2m_b (so that a -> τ^+ τ^- or light quarks and gluons). The mass of the lightest CP-odd Higgs boson is controlled by the soft-trilinear couplings, A_λ(m_Z) and A_κ(m_Z). We identify the region of parameter space where this situation occurs and discuss how natural this scenario is. It turns out that in order to achieve m_a < 2 m_b with A_λ(m_Z), A_κ(m_Z) of order the typical radiative corrections, the required tuning of trilinear couplings need not be larger than 5-10 %. Further, the necessity for this tuning can be eliminated in specific SUSY breaking scenarios. Quite interestingly, Br(h -> aa) is typically above 70 % in this region of parameter space and thus an appropriately large value requires no additional tuning.

arXiv comment33 pages, 25 figures

References in corpus (18)

• NMHDECAY: A Fortran Code for the Higgs Masses, Couplings and Decay Widths in the NMSSM
• Escaping the Large Fine Tuning and Little Hierarchy Problems in the Next to Minimal Supersymmetric Model and h-> aa Decays
• Phenomenology of Mixed Modulus-Anomaly Mediation in Fluxed String Compactifications and Brane Models
• Resolving the Constrained Minimal and Next-to-Minimal Supersymmetric Standard Models
• A Solution to the Supersymmetric Fine-Tuning Problem within the MSSM
• Particle Spectrum in Supersymmetric Models with a Gauge Singlet
• Bottom-Up Approach to Moduli Dynamics in Heavy Gravitino Scenario : Superpotential, Soft Terms and Sparticle Mass Spectrum
• Light Axion within the Next-to-Minimal Supersymmetric Standard Model
• Little SUSY hierarchy in mixed modulus-anomaly mediation
• Higgs Sector in Extensions of the MSSM
• Higgs Boson Decays to CP-odd Scalars at the Tevatron and Beyond
• SUSY Phenomenology of KKLT Flux Compactifications
• Neutralinos and Higgs Bosons in the Next-To-Minimal Supersymmetric Standard Model
• Consistency of LEP $Z+b$-jets excess with an {\boldmath $h\to aa$} Decay Scenario and Low-Fine-Tuning NMSSM Models
• Naturalness and Higgs Decays in the MSSM with a Singlet
• Radiatively Generated Maximal Mixing Scenario for the Higgs Mass and the Least Fine Tuned Minimal Supersymmetric Standard Model
• Mediation of Supersymmetry Breaking in Gauge Messenger Models
• Phenomenology of supersymmetric models with a singlet

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