Non-thermal Dark Matter and the Moduli Problem in String Frameworks
High Energy Physics - Phenomenology
2009-02-09 v2 Astrophysics
High Energy Physics - Theory
Abstract
We address the cosmological moduli/gravitino problems and the issue of too little thermal but excessive non-thermal dark matter from the decays of moduli. The main examples we study are the G2-MSSM models arising from M theory compactifications, which allow for a precise calculation of moduli decay rates and widths. We find that the late decaying moduli satisfy both BBN constraints and avoid the gravitino problem. The non-thermal production of wino LSPs, which is a prediction of G2-MSSM models, gives a relic density of about the right order of magnitude.
Cite
@article{arxiv.0804.0863,
title = {Non-thermal Dark Matter and the Moduli Problem in String Frameworks},
author = {Bobby S. Acharya and Piyush Kumar and Konstantin Bobkov and Gordon Kane and Jing Shao and Scott Watson},
journal= {arXiv preprint arXiv:0804.0863},
year = {2009}
}
Comments
41 pages, 5 figures, references and minor comments added