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

G. Belanger , F. Boudjema , A. Cottrant , A. Pukhov , A. Semenov

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

Mots clés: SUGRA; direct detection; dark matter; non-universality

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]

G. Belanger, F. Boudjema, A. Cottrant, A. Pukhov, A. Semenov. WMAP constraints on SUGRA models with non-universal gaugino masses and prospects for direct detection. 2004. ⟨hal-00005135⟩