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Weakly interacting massive particle densities in decaying-particle-dominated cosmology

McDonald, John (1991) Weakly interacting massive particle densities in decaying-particle-dominated cosmology. Physical Review D, 43 (4). pp. 1063-1068. ISSN 0556-2821

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Abstract

We consider the present cosmological density of weakly interacting massive particles (WIMP's) in the context of models where the energy density is dominated by decaying massive particles, such that WIMP's freeze out of chemical equilibrium during the massive-particle-dominated era. An expression for the density of WIMP's is derived by a generalization of the Lee-Weinberg argument for the density of heavy neutrinos in the standard cosmological model.

Item Type: Article
Journal or Publication Title: Physical Review D
Uncontrolled Keywords: SUPERSTRING MODELS ; DARK MATTER ; UNIVERSE ; SUPERSYMMETRY ; BREAKING ; AXIONS ; SCALE
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 83246
Deposited By: ep_importer_pure
Deposited On: 29 Nov 2016 09:10
Refereed?: Yes
Published?: Published
Last Modified: 20 Sep 2017 03:15
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/83246

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