Impact on the Light Higgsino-LSP Scenario from Physics beyond the Minimal Supersymmetric Standard Model

Abstract

The modest addition of the dimension-5 term lambda(H_u.H_d)^2/M to the superpotential of the minimal supersymmetric standard model (MSSM) originated from physics beyond the MSSM (BMSSM) has a significant impact on the scenario of the Higgsino-dominated neutralino state being the lightest supersymmetric particle (LSP). It increases the mass difference between the LSP and the lighter chargino as well as that between the LSP and the second-lightest neutralino. This enhances the LHC discovery potential of the chargino and neutralino decays, producing more energetic charged leptons or pions than the decays without the BMSSM corrections. Furthermore, the coannihilation between the lighter chargino or second-lightest neutralino and the LSP is reduced substantially such that the LSP mass does not have to be very heavy. Consequently, an almost pure Higgsino LSP with its mass ~100 GeV in the BMSSM can account for all the relic density of cold dark matter in the Universe unless tan(beta) is too large.

minor changes and references added

References in corpus (7)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• Higgs Physics as a Window Beyond the MSSM (BMSSM)
• The Neutralino Sector in the U(1)-Extended Supersymmetric Standard Model
• Looking for a Heavy Higgsino LSP in Collider and Dark Matter Experiments
• A minimal supersymmetric scenario with only μat the weak scale

Cited by in corpus (16)

• Higgsino Dark Matter in High-Scale Supersymmetry
• Unveiling Hidden Physics at the LHC
• Supersymmetric Higgs Bosons and Beyond
• Vacuum (Meta)Stability Beyond the MSSM
• Dark matter detection in the BMSSM
• BMSSM Implications for Cosmology
• BMSSM Higgs Bosons at the Tevatron and the LHC
• Neutralino Dark Matter in BMSSM Effective Theory
• Supersymmetric Higgses beyond the MSSM: An update with flavour and Dark Matter constraints
• BMSSM Higgs Bosons at the 7 TeV LHC
• SUSY Higgs searches : beyond the MSSM
• A Scotogenic Model as a Prototype for Leptogenesis with One Single Gauge Singlet
• Neutralino and chargino masses and related sum rules beyond MSSM
• SUSY Higgs bosons and beyond
• Effective Approaches in and Beyond the MSSM : applications to Higgs Physics and Dark Matter observables
• Composite Higgsino