2003/04/30 by D. G. Cerdeno, D. G. Cerdeño, E. Gabrielli +5 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Gaugino #Geometry #Higgs boson #Muon #Neutralino #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Scalar (mathematics) #Supergravity #Supersymmetry #hep-ph
paper · pdf · doi:10.1088/1126-6708/2003/06/030
published as JHEP 0306:030,2003 · Final version to appear in JHEP
openalex publication_date 2003/06/16 · arxiv created 2003/06/30 · arxiv updated 2014/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We compute the neutralino-nucleon cross section in several supersymmetric scenarios, taking into account all kind of constraints. In particular, the constraints that the absence of dangerous charge and colour breaking minima imposes on the parameter space are studied in detail. In addition, the most recent experimental constraints, such as the lower bound on the Higgs mass, the b→ sγ branching ratio, and the muon g-2 are considered. The astrophysical bounds on the dark matter density are also imposed on the theoretical computation of the relic neutralino density, assuming thermal production. This computation is relevant for the theoretical analysis of the direct detection of dark matter in current experiments. We consider first the supergravity scenario with universal soft terms and GUT scale. In this scenario the charge and colour breaking constraints turn out to be quite important, and tanβ\lsim 20 is forbidden. Larger values of tanβ can also be forbidden, depending on the value of the trilinear parameter A. Finally, we study supergravity scenarios with an intermediate scale, and also with non-universal scalar and gaugino masses where the cross section can be very large.