First LHC Constraints on Neutralinos

Abstract

The ATLAS and CMS collaborations have recently reported tantalizing hints of the existence of a 125 GeV Higgs--like particle, whose couplings appear to match well the Standard Model (SM) expectations. In this work, we study implications of this observation for the neutralino sector of supersymmetric models, assuming that the Higgs signal gets confirmed. In general, the Higgs decay into neutralinos can be one of its dominant decay channels. Since a large invisible Higgs decay branching ratio would be in conflict with the data, this possibility is now constrained. In particular, we find that most of the region mu < 170 GeV, M_1 < 70 GeV at tan beta ~ 10 and mu < 120 GeV, M_1 < 70 GeV at tan beta ~ 40 is disfavored.

9 pages, 4 figures; to appear in PLB

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Cited by in corpus (21)

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• Resonance at 125 GeV: Higgs or Dilaton/Radion?
• Cornering light Neutralino Dark Matter at the LHC
• Fermionic extensions of the Standard Model in light of the Higgs couplings
• Exploring QCD uncertainties when setting limits on compressed SUSY spectra
• Higgs boson mass, neutrino masses and mixing and keV dark matter in an $U(1{)}_R-$ lepton number model
• Invisible Higgs Decay in a Supersymmetric Inverse Seesaw Model with Light Sneutrino Dark Matter
• Probing the $\mu \nu$SSM with light scalars, pseudoscalars and neutralinos from the decay of a SM-like Higgs boson at the LHC
• Susy-QCD corrections to neutralino pair production in association with a jet
• Naturalness of Neutralino Dark Matter
• Partially (in)visible Higgs decays at the LHC
• The invisible decay of Higgs boson in the context of a thermal and non-thermal relic in MSSM
• Confronting the neutralino and chargino sector of the NMSSM to the multi-lepton searches at the LHC
• On the sbottom resonance in dark matter scattering
• Invisible decays of the lightest Higgs boson in supersymmetric models
• Electroweakino searches at the HL-LHC in the baryon number violating MSSM
• $h\to \gamma \gamma$ in $U(1{)}_R-$ lepton number model with a right-handed neutrino
• Invisible decays of the heavier Higgs boson in the minimal supersymmetric standard model
• Invisible decays of low mass Higgs bosons in supersymmetric models
• Current status of the light neutralino thermal dark matter in the phenomenological MSSM