Gauge mediation in supergravity and gravitino dark matter
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
Gravitinos and hidden sector fields often cause a cosmological disaster in supersymmetric models. We find that a model with gravitational gauge mediation solves such a problem quite naturally. The mu-problem is also absent in the model. Moreover, the abundance of gravitinos explains correct amount of dark matter of the universe. The dark matter abundance can be calculated without detailed information on the thermal history of the universe such as the reheating temperature after inflation.
Cite
@article{arxiv.hep-ph/0611111,
title = {Gauge mediation in supergravity and gravitino dark matter},
author = {Masahiro Ibe and Ryuichiro Kitano},
journal= {arXiv preprint arXiv:hep-ph/0611111},
year = {2008}
}
Comments
22 pages, 2 figures, a reference added, version to appear in PRD