WMAP constraints on SUGRA models with non-universal gaugino masses and prospects for direct detection

2004/07/19 by G. Belanger, G. Bélanger, F. Boudjema +3 · 4 citations
Physics and Astronomy · #Annihilation #CMB cold spot #Cosmic microwave background #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Gaugino #Higgs boson #Neutralino #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Supergravity #Superpartner #Supersymmetry #hep-ph

paper · pdf · doi:10.1016/j.nuclphysb.2004.11.036

published as Nucl.Phys.B706:411-454,2005 · 45 pages, 18 figures

arxiv created 2004/07/19 · openalex publication_date 2004/12/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We discuss constraints on supersymmetric models arising from the relic density measurements of WMAP as well as from direct and precision measurements, LEP, b-sgamma, g-2, Bs-mumu. We consider mSUGRA models and their extensions with non-universal gaugino masses. We find, as commonly known, that the relic density pinpoints towards very specific regions of the mSUGRA models: coannihilation, focus and Heavy Higgs annihilation. The allowed regions widen significantly when varying the top quark mass. Introducing some non-universality in the gaugino masses significantly changes this conclusion as in specific non-universal models the relic density upper limit can be easily satisfied. This occurs with models where M1>M2 at the GUT scale when the LSP has a high wino component. Models where M3<M2 favours the Higgs annihilation channel in large regions of parameter space and at large tanβ also favours the annihilation of neutralinos in gauge bosons pairs.We discuss also the potential of direct detection experiments to probe supersymmetric models and point out at the main consequences for colliders based on the mass spectrum. Our calculation of the relic density of neutralinos is based on micrOMEGAs and the SUSY spectrum is generated with SoftSUSY

Citations

• MSSM Higgs boson decays to bottom quark pairs reexamined
• Supersymmetric dark matter in the light of CERN LEP and the Fermilab Tevatron collider
• Towards a theory of soft terms for the supersymmetric standard model
• Detection of Bs→μ+μ− at the tevatron Run II and constraints on the SUSY parameter space
• Updated Constraints on the Minimal Supergravity Model
• Are heavy scalars natural in minimal supergravity?
• Sparticle spectrum and constraints in anomaly mediated supersymmetry breaking models
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Preliminary Maps and Basic Results
• Theoretical uncertainties in sparticle mass predictions from computational tools
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• Weak radiative B-meson decay beyond leading logarithms
• Review of particle properties
• Review of Particle Physics
• Hadronic light-by-light scattering contribution to the muon g − 2

Cited by

• SUSY Predictions for the LHC
• Electroweak precision observables in the minimal supersymmetric standard model
• B, D and K decays
• Supersymmetric extra U(1) models with a singlino-dominated lightest superparticle