Natural NMSSM Higgs Bosons

Abstract

We study the phenomenology of Higgs bosons close to 126 GeV within the scale invariant unconstrained next-to-minimal supersymmetric Standard Model (NMSSM), focusing on the regions of parameter space favoured by low fine-tuning considerations, namely stop masses of order 400 GeV to 1 TeV and an effective $\mu$ parameter between 100-200 GeV, with large (but perturbative) $\lambda$ and low $\tan \beta =$2-4. We perform scans over the above parameter space, focusing on the observable Higgs cross sections into $\gamma \gamma$, $WW$, $ZZ$, $bb$, $\tau \tau$ final states, and study the correlations between these observables. We show that the $\gamma \gamma$ signal strength may be enhanced up to a factor of about two not only due to the effect of singlet-doublet mixing, which occurs more often when the 126 GeV Higgs boson is the next-to-lightest CP-even one, but also due to light stops (and to a lesser extent light chargino and charged Higgs loops). There may be also smaller enhancements in the Higgs decay channels into $WW$, $ZZ$, correlated with the $\gamma \gamma$ enhancement. However there is no such correlation observed involving the Higgs decay channels into $bb$, $\tau \tau$. The requirement of having perturbative couplings up to the GUT scale favours the interpretation of the 126 GeV Higgs boson as being the second lightest NMSSM CP-even state, which can decay into pairs of lighter neutralinos, CP-even or CP-odd Higgs bosons, leading to characteristic signatures of the NMSSM. In a non-negligible part of the parameter range the increase in the $\gamma \gamma$ rate is due to the superposition of rates from nearly degenerate Higgs bosons. Resolving these Higgs bosons would rule out the Standard Model, and provide evidence for the NMSSM.

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• Exploring the Higgs Sector of a Most Natural NMSSM and its Prediction on Higgs Pair Production at the LHC
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• Higgs mass predictions of public NMSSM spectrum generators
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• Little Higgs theory confronted with the LHC Higgs data
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• Probing the CP-even Higgs Sector via $H_3\to H_2{H}_1$ in the Natural NMSSM
• Search for a very light NMSSM Higgs boson produced in decays of the 125 GeV scalar boson and decaying into tau leptons in pp collisions at sqrt(s) = 8 TeV
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• The semi-constrained NMSSM satisfying bounds from the LHC, LUX and Planck
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• One or more Higgs bosons?
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• Current Status of Natural NMSSM in Light of LHC 13TeV Data and XENON-1T Results
• Bayesian naturalness of the CMSSM and CNMSSM
• A comparison of the Higgs sectors of the CMSSM and NMSSM for a 126 GeV Higgs boson
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• 125 GeV Higgs Boson signal within the complex NMSSM
• Can we discover a light singlet-like NMSSM Higgs boson at the LHC?
• NMSSM interpretations of the observed Higgs signal
• Diphoton Signal of light pseudoscalar in NMSSM at the LHC
• Pair production of 125 GeV Higgs boson in the SM extension with color-octet scalars at the LHC
• Testing the higgsino-singlino sector of the NMSSM with trileptons at the LHC
• Electroweak Supersymmetry (EWSUSY) in the NMSSM
• Detection prospects of light NMSSM Higgs pseudoscalar via cascades of heavier scalars from vector boson fusion and Higgs-strahlung
• Novel Higgs-to-125 GeV Higgs boson decays in the complex NMSSM
• Singlino-dominated dark matter in $Z_3$-NMSSM
• Improved prediction for the mass of the W boson in the NMSSM
• Perspectives of direct Detection of supersymmetric Dark Matter in the NMSSM
• Solving The Muon g-2 Anomaly With Natural NMSSM From Generalized Deflected AMSB
• Light Higgs Bosons in NMSSM at the LHC
• Is the CNMSSM more credible than the CMSSM?
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• Invisible decays of the lightest Higgs boson in supersymmetric models
• Two Higgs bosons near 125 GeV in the NMSSM: beyond the narrow width approximation
• Highlights of Supersymmetric Hypercharge $\pm 1$ Triplets
• Higgs Mixing in the NMSSM and Light Higgsinos
• Two Light Stops in the NMSSM and the LHC
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• Bayesian analysis and naturalness of (Next-to-)Minimal Supersymmetric Models
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• Next-to-Leading Order NMSSM Decays with CP-odd Higgs Bosons and Stops
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• Dynamical Higgs Field Alignment in the NMSSM
• Sbottoms of Natural NMSSM at the LHC
• Discovery potential of the NMSSM CP-odd Higgs at the LHC
• Detection prospects of light pseudoscalar Higgs boson at the LHC
• Impact of LHC Higgs couplings measurements on bosonic decays of the neutral Higgs sector in the scNMSSM
• Revealing mass-degenerate states in Higgs boson signals
• Two Higgs bosons near 125 GeV in the complex NMSSM and the LHC Run-I data
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• Top quark physics in the Large Hadron Collider era
• The second lightest CP-even Higgs boson signals in the NMSSM at the LHC
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• Status of ${\mathbb{Z}}_3$-NMSSM featuring a light bino-dominated LSP and a light singlet-like scalar under the LZ Experiment