Nonstandard Higgs Decays and Dark Matter in the E6SSM

Abstract

We study the decays of the lightest Higgs boson within the exceptional supersymmetric (SUSY) standard model (E6SSM). The E6SSM predicts three families of Higgs-like doublets plus three SM singlets that carry U(1)_{N} charges. One family of Higgs-like doublets and one SM singlet develop vacuum expectation values. The fermionic partners of other Higgs-like fields and SM singlets form inert neutralino and chargino states. Two lightest inert neutralinos tend to be the lightest and next-to-lightest SUSY particles (LSP and NLSP). The considered model can account for the dark matter relic abundance if the lightest inert neutralino has mass close to half the Z mass. In this case the usual SM-like Higgs boson decays more than 95% of the time into either LSPs or NLSPs. As a result the decays of the lightest Higgs boson into l^{+} l^{-} + X might play an essential role in the Higgs searches. This scenario also predicts other light inert chargino and neutralino states below 200 GeV and large LSP direct detection cross-sections which is on the edge of observability of XENON100.

Parallel talk presented at 2011 Meeting of the Division of Particles and Fields of the American Physical Society (DPF 2011), Providence, Rhode Island, USA, 9-13 August 2011, 8 pages

References in corpus (11)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• Results from the Final Exposure of the CDMS II Experiment
• First Dark Matter Results from the XENON100 Experiment
• Gauge Coupling Unification in the Exceptional Supersymmetric Standard Model
• Leptogenesis in the Exceptional Supersymmetric Standard Model: flavour dependent lepton asymmetries
• Novel Higgs Decays and Dark Matter in the E(6)SSM
• LHC Signatures of the Constrained Exceptional Supersymmetric Standard Model
• Theoretical upper bound on the mass of the LSP in the MNSSM
• Higgs bosons in the NMSSM with exact and slightly broken PQ-symmetry
• Approximate solutions for the Higgs masses and couplings in the NMSSM
• Nonstandard Higgs decays in the E(6)SSM

Cited by in corpus (7)

• E6 inspired SUSY models with exact custodial symmetry
• Dark Radiation or Warm Dark Matter from long lived particle decays in the light of Planck
• Exotic Higgs decays in the E6 inspired SUSY models
• Quasi-fixed point scenarios and the Higgs mass in the E6 inspired SUSY models
• Threshold Corrections in the Exceptional Supersymmetric Standard Model
• Leptogenesis as an origin of dark matter and baryon asymmetries in the E6 inspired SUSY models
• Nonstandard Higgs decays in the E6 inspired SUSY models