Cosmological Constraints on Bulk Neutrinos

Details Cosmological Constraints on Bulk Neutrinos Cosmological Constraints on Bulk Neutrinos

2000-11-03

arxiv.org/abs/hep-ph/0011048v3

Phys.Rev.Lett. 90 (2003) 061301

Physics

High Energy Physics

High Energy Physics - Phenomenology

matches published version

Scientific paper

10.1103/PhysRevLett.90.061301

Recent models invoking extra spacelike dimensions inhabited by (bulk) neutrinos are shown to have significant cosmological effects if the size of the largest extra dimension is R > 1 fm. We consider effects on cosmic microwave background anisotropies, big bang nucleosynthesis, deuterium and Li-6 photoproduction, diffuse photon backgrounds, and structure formation. The resulting constraints can be stronger than either bulk graviton overproduction constraints or laboratory constraints.

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