Was ordinary matter synthesized from mirror matter? An attempt to explain why [Formula Presented]

Abstract

The cosmological dust has begun to settle. A likely picture is a universe comprised (predominantly) of three components: ordinary baryons [Formula Presented] nonbaryonic dark matter [Formula Presented] and dark energy [Formula Presented] We suggest that the observed similarity of the abundances of ordinary baryons and nonbaryonic dark matter [Formula Presented] hints at an underlying similarity between the fundamental properties of ordinary and dark matter particles. This is necessarily the case if dark matter is identified with mirror matter. We examine a specific mirror matter scenario where [Formula Presented] is naturally obtained. © 2003 The American Physical Society.