Document Type
Article
Date
9-7-2011
Language
English
Disciplines
Physics
Description/Abstract
Low-scale supersymmetry breaking in string motivated theories implies the presence of O(100) TeV scale moduli, which generically lead to a significant modification of the history of the universe prior to Big Bang Nucleosynthesis. Such an approach implies a non-thermal origin for dark matter resulting from scalar decay, where the lightest supersymmetric particle can account for the observed dark matter relic density. We study the further effect of the decay on the baryon asymmetry of the universe, and find that this can satisfactorily address the problem of the over-production of the baryon asymmetry by the Affleck-Dine mechanism in the MSSM. Remarkably, there is a natural connection between the baryon and dark matter abundances today, which leads to a solution of the `Cosmic Coincidence Problem'.
Recommended Citation
Watson, Scott; Kane, Gordon; Shao, Jing; and Yu, Hai-Bo, "The Baryon-Dark Matter Ratio Via Moduli Decay After Affleck-Dine Baryogenesis" (2011). Physics - All Scholarship. 397.
https://surface.syr.edu/phy/397
Source
Harvested from Arxiv.org
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
Additional Information
12 pages, no figure. v2: references added More informaton at http://arxiv.org/abs/1108.5178