Abstract
Recently WMAP has measured the cosmological parameters to a much greater accuracy. We analyze the implications of this more precise measurement for supersymmetric dark matter and for the direct detection of supersymmetry at accelerators. We consider MSUGRA including also the hyperbolic branch (HB) in the radiative breaking of the electroweak symmetry. On the part of the hyperbolic branch where the lightest neutralino is dominantly a Higgsino rather than being mostly a B-ino, the relic density constraints are satisfied by coannihilation with the next lightest neutralino and the light chargino. Including this branch the lightest neutralino mass satisfies mχ₁0μ-2, and of Bs0→μ⁺μ⁻ are also analyzed. It is shown that the neutralino-proton cross section in each case will fall within the reach of dark matter experiments. The possibility for the direct detection of supersymmetry is discussed in the allowed regions of the parameter space consistent with WMAP constraints. A brief discussion of the hyperbolic branch and focus point region (HB/FP) is also given.
Keywords
WMAP constraints, direct detection
Subject Categories
Dark matter (Astronomy), Supersymmetry
Disciplines
Physics
Publisher
American Physical Society
Publication Date
8-12-2003
Rights Information
Copyright (2003) American Physical Society
Rights Holder
American Physical Society
Recommended Citation
Chattopadhyay, Utpal; Corsetti, Achille; and Nath, Pran, "WMAP constraints, supersymmetric dark matter, and implications for the direct detection of supersymmetry" (2003). Physics Faculty Publications. Paper 511.
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Notes
Originally published in Physical Review D v.68 (2003): 035005. DOI: 10.1103/PhysRevD.68.035005