El Dahab, Eiman AbouKhalil, Shaaban2020-01-142020-01-142006Cited References in Web of Science Core Collection: 221029-8479https://cutt.ly/DrxT6AWAccession Number: WOS:000241020900041We analyze the dark matter problem in the context of brane cosmology. We investigate the impact of the non-conventional brane cosmology on the relic abundance of non-relativistic stable particles in high and low reheating temperature scenarios. We show that in case of high reheating temperature, the brane cosmology may enhance the dark matter relic density by many order of magnitudes and a stringent lower bound on the five dimensional scale is obtained. We also consider low reheating temperature scenarios with chemical equilibrium and non-equilibrium. We emphasize that in non-equilibrium case, the resulting relic density is very small. While with equilibrium, it is increased by a factor of O(10(2)) with respect to the standard thermal production. Therefore, dark matter particles with large cross section, which is favored by detection expirements, can be consistent with the recent relic density observational limits.enUniversity for large extra dimensionscosmology of theories beyond the SMbeyond standard modelArticle