Goldilocks Supersymmetry: Simultaneous Solution to the Dark Matter and Flavor Problems of Supersymmetry

Abstract

Neutralino dark matter is well motivated, but also suffers from two shortcomings: it requires gravity-mediated supersymmetry breaking, which generically violates flavor constraints, and its thermal relic density Ωis typically too large. We propose a simple solution to both problems: neutralinos freezeout with Ω~10-100, but then decay to ~1 GeV gravitinos, which are simultaneously light enough to satisfy flavor constraints and heavy enough to be all of dark matter. This scenario is naturally realized in high-scale gauge-mediation models, ameliorates small scale structure problems, and implies that ``cosmologically excluded'' models may, in fact, be cosmologically preferred.

4 pages; v2: references added; v3: published version

References in corpus (6)

• Cosmological Constraints from the SDSS Luminous Red Galaxies
• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• Big Bang Nucleosynthesis Constraints on Hadronically and Electromagnetically Decaying Relic Neutral Particles
• Can sterile neutrinos be the dark matter?
• Can sterile neutrinos be ruled out as warm dark matter candidates?
• Gauge mediation in supergravity and gravitino dark matter

Cited by in corpus (8)

• The WIMPless Miracle: Dark Matter Particles without Weak-scale Masses or Weak Interactions
• Gravitino Dark Matter and general neutralino NLSP
• The number density of a charged relic
• The Standard Model and Supersymmetric Flavor Puzzles at the Large Hadron Collider
• SUSY in the sky or a keV signature of sub-GeV gravitino dark matter
• Affleck-Dine Baryogenesis, Condensate Fragmentation and Gravitino Dark Matter in Gauge-Mediation with a Large Messenger Mass
• Building a Better mSUGRA: WIMP Dark Matter Without Flavor Violation
• R-invariant New Inflation Model vs Supersymmetric Standard Model