Singlet particles as cold dark matter in noncommutative space-time

Abstract

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.

14 pages, to appear in Phys. Rev. D

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• Annihilation of singlet fermionic dark matter into two photons
• Particle phenomenology on noncommutative spacetime
• Hydrogen and muonic-Hydrogen Atomic Spectra in Non-commutative Space-Time
• Two-photon annihilation of singlet cold dark matters due to noncommutative space-time
• Noncommutative QED+QCD and $\beta$-function for QED
• Higgs Couplings in NonCommutative Standard Model
• Nucleon structure functions in noncommutative space-time