Decaying dark matter with heavy axino
High Energy Physics - Phenomenology
2009-10-29 v2 High Energy Astrophysical Phenomena
Abstract
A TeV scale decaying dark matter chiral multiplet N is introduced in addition to the minimal supersymmetric standard model(MSSM). For a calculable abundance of N, we introduce heavy axino decaying to N and MSSM particles including the lightest supersymmetric particle(LSP). In the scenario that heavy axino, once dominating the energy density of the universe, decays after the LSP decouples, it is possible to estimate the relative cosmic abundances of N and the LSP. Dimension 6 interactions allow the lifetime of the fermionic or the bosonic superpartner of N in the 10^{27} s range to be compatible with the recent astrophysical bounds. A diagrammatic strategy obtaining a suppression factor 1/M^2 is also given.
Cite
@article{arxiv.0908.0152,
title = {Decaying dark matter with heavy axino},
author = {Ji-Haeng Huh and Jihn E. Kim},
journal= {arXiv preprint arXiv:0908.0152},
year = {2009}
}
Comments
5 pages with 2 figures