Nonthermal Axino as Cool Dark Matter in Supersymmetric Standard Model without R-parity

Details Nonthermal Axino as Cool Dark Matter in Supersymmetric Standard Model without R-parity Nonthermal Axino as Cool Dark Matter in Supersymmetric Standard Model without R-parity

1999-06-16

arxiv.org/abs/hep-ph/9906392v1

Phys.Rev. D60 (1999) 095006

Physics

High Energy Physics

High Energy Physics - Phenomenology

Revtex, 10 pages + 1 figure

Scientific paper

10.1103/PhysRevD.60.095006

We point out that the axino predicted as the supersymmetric partner of the axion is a good candidate for the recently proposed sterile neutrino cool dark matter. The axino mass falls into the right range in the context of gauge mediated supersymmetry breaking. A sizable mixing of the axino with active neutrinos arises when R-parity violation is allowed and the resulting neutrino masses and mixing accommodate the atmospheric and solar neutrino oscillations simultaneously.

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