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Title: Asymmetric dark matter in braneworld cosmology

We investigate the effect of a braneworld expansion era on the relic density of asymmetric dark matter. We find that the enhanced expansion rate in the early universe predicted by the Randall-Sundrum II (RSII) model leads to earlier particle freeze-out and an enhanced relic density. This effect has been observed previously by Okada and Seto (2004) for symmetric dark matter models and here we extend their results to the case of asymmetric dark matter. We also discuss the enhanced asymmetric annihilation rate in the braneworld scenario and its implications for indirect detection experiments.
Authors:
;  [1]
  1. School of Engineering and Physical Sciences, James Cook University, Townsville, 4811 Australia (Australia)
Publication Date:
OSTI Identifier:
22373535
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 06; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANNIHILATION; ASYMMETRY; BRANES; COSMOLOGY; DENSITY; FREEZING OUT; M-THEORY; NONLUMINOUS MATTER; SYMMETRY; UNIVERSE