Singlet particles as cold dark matter in noncommutative space-time

Details Singlet particles as cold dark matter in noncommutative space-time Singlet particles as cold dark matter in noncommutative space-time

2009-03-10

arxiv.org/abs/0903.1708v1

Phys.Rev.D79:065022,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.79.065022

We extend the noncommutative (NC) standard model to incorporate singlet particles as cold dark matter. In the NC space-time, the singlet particles can be coupled to the U(1) gauge field in the adjoint representation. We Study the relic density of the singlet particles due to the NC induced interaction. Demanding either the singlet fermion or the singlet scalar to serve as cold dark matter and the NC induced interactions to be relevant to the dark matter production, we obtain the corresponding relations between the NC scale and the dark matter masses, which are consistent with some existing bounds.

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