Enhanced $h\to \gamma \gamma$ rate in MSSM singlet extensions

Abstract

We study the di-photon rate in Higgs decays within singlet extensions of the supersymmetric standard model. In particular we point out that light charginos as well as a light charged Higgs can significantly contribute to the corresponding partial decay width, allowing for an explanation of the experimental indication whithin a natural supersymmetric model. This is in contrast to the `light stau scenario' proposed within the framework of the MSSM which requires a large amount of electroweak fine tuning.

19 pages, 8 figures; v2: added discussion on constraints from $b\to s\gamma$ and $\delta crho$. Matches version accepted by JHEP

References in corpus (40)

• The Anatomy of Electro-Weak Symmetry Breaking. II: The Higgs bosons in the Minimal Supersymmetric Model
• SPheno, a program for calculating supersymmetric spectra, SUSY particle decays and SUSY particle production at e+ e- colliders
• Precision Corrections in the Minimal Supersymmetric Standard Model
• SPheno 3.1: extensions including flavour, CP-phases and models beyond the MSSM
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• A Natural SUSY Higgs Near 125 GeV
• Automatic Calculation of supersymmetric Renormalization Group Equations and Self Energies
• A 125 GeV SM-like Higgs in the MSSM and the $\gamma \gamma$ rate
• From Superpotential to Model Files for FeynArts and CalcHep/CompHep
• $b\to s\gamma$ Decay and Supersymmetry
• NNLO QCD corrections to the B -> X_s gamma matrix elements using interpolation in m_c
• A Higgs boson near 125 GeV with enhanced di-photon signal in the NMSSM
• On the O(alpha_t^2) two-loop corrections to the neutral Higgs boson masses in the MSSM
• Implications of a Modified Higgs to Diphoton Decay Width
• On the two-loop sbottom corrections to the neutral Higgs boson masses in the MSSM
• Light Stau Phenomenology and the Higgs γγRate
• Search for a light charged Higgs boson in top quark decays in pp collisions at sqrt(s) = 7 TeV
• Search for charged Higgs bosons decaying via H+ -> tau nu in top quark pair events using pp collision data at sqrt(s) = 7 TeV with the ATLAS detector
• On the two-loop Yukawa corrections to the MSSM Higgs boson masses at large tan(beta)
• Discrete R symmetries for the MSSM and its singlet extensions
• Supersymmetry without a Light Higgs Boson
• Confronting the MSSM and the NMSSM with the Discovery of a Signal in the two Photon Channel at the LHC
• A unique Z_4^R symmetry for the MSSM
• The fine-tuning of the generalised NMSSM
• Three-loop matching of the dipole operators for b -> s gamma and b -> s g
• The Minimal Supersymmetric Model without a mu term
• Two-loop corrections to Radiative Electroweak Symmetry Breaking in the MSSM
• The generalised NMSSM at one loop: fine tuning and phenomenology
• The electroweak sector of the NMSSM at the one-loop level
• Reproducing the Higgs boson data with vector-like quarks
• Does $H\to \gamma \gamma$ Taste like vanilla New Physics?
• 125 GeV Higgs Boson, Enhanced Di-photon Rate, and Gauged U(1)_PQ-Extended MSSM
• Are There Hints of Light Stops in Recent Higgs Search Results?
• Explaining the Higgs Decays at the LHC with an Extended Electroweak Model
• Large diphoton Higgs rates from supersymmetric triplets
• Precision Unification in λSUSY with a 125 GeV Higgs
• Photophilic Higgs from sgoldstino mixing
• Higgs Signals in a Type I 2HDM or with a Sister Higgs
• Enhancement of Higgs to diphoton decay width in non-perturbative Higgs model
• New Charged Particles from Higgs Couplings

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• Indirect Probes of the MSSM after the Higgs Discovery
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• The 125 GeV Higgs signal at the LHC in the CP Violating MSSM
• Diphoton Decay Excess and 125 GeV Higgs Boson in Gauge-Higgs Unification
• Analysis of the Higgs potentials for two doublets and a singlet
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• Interpreting 750 GeV Diphoton Excess in Plain NMSSM
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• Neutralino and Chargino Production in U(1)' at the LHC
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• A Light Supersymmetric Higgs Sector Hidden by a Standard Model-like Higgs
• Implications of Higgs to diphoton decay rate in the bilinear R-parity violating supersymmetric model
• NMSSM with Gravitino Dark Matter to be tested at LHC
• Fermionic decays of NMSSM Higgs bosons under LHC 13 TeV constraints
• PandaX limits on light dark matter with light mediator in the singlet extension of MSSM