In asymmetric dark matter with self-annihilation, the shear-dominated universe permits a higher self-annihilation cross section and a lower wino mass limit than standard cosmology, while the Gauss-Bonnet braneworld does the opposite.
Abundance of Asymmetric Dark Matter in Brane World Cosmology
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Relic abundance of asymmetric Dark Matter particles in brane world cosmological scenario is investigated in this article. Hubble expansion rate is enhanced in brane world cosmology and it affects the relic abundance of asymmetric Dark Matter particles. We analyze how the relic abundance of asymmetric Dark Matter is changed in this model. We show that in such kind of nonstandard cosmological scenario, indirect detection of asymmetric Dark Matter is possible if the cross section is small enough which let the anti--particle abundance kept in the same amount with the particle. We show the indirect detection signal constraints can be used to such model only when the cross section and the 5 dimensional Planck mass scale are in appropriate values.
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Constraints on Asymmetric Dark Matter Self Annihilation Cross Sections
In asymmetric dark matter with self-annihilation, the shear-dominated universe permits a higher self-annihilation cross section and a lower wino mass limit than standard cosmology, while the Gauss-Bonnet braneworld does the opposite.