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

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

2004-07-19

arxiv.org/abs/hep-ph/0407218v1

Nucl.Phys.B706:411-454,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

45 pages, 18 figures

Scientific paper

10.1016/j.nuclphysb.2004.11.036

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

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