Superweakly Interacting Massive Particles

Details Superweakly Interacting Massive Particles Superweakly Interacting Massive Particles

2003-02-25

arxiv.org/abs/hep-ph/0302215v2

Phys.Rev.Lett.91:011302,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 figures, published version

Scientific paper

10.1103/PhysRevLett.91.011302

We investigate a new class of dark matter: superweakly-interacting massive particles (superWIMPs). As with conventional WIMPs, superWIMPs appear in well-motivated particle theories with naturally the correct relic density. In contrast to WIMPs, however, superWIMPs are impossible to detect in all conventional dark matter searches. We consider the concrete examples of gravitino and graviton cold dark matter in models with supersymmetry and universal extra dimensions, respectively, and show that superWIMP dark matter satisfies stringent constraints from Big Bang nucleosynthesis and the cosmic microwave background.

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