Kaluza-Klein Dark Matter After Fermi
High Energy Physics - Phenomenology
2009-09-01 v1
Abstract
Kaluza-Klein photon in universal extra dimension models is one of the most attractive dark matter candidates as a weakly interacting massive particle. Having a characteristic split spectrum in split universal extra dimension the relic density of Kaluza-Klein photon with 900 GeV mass is in good agreement with the observed dark matter amount in our Universe. Interestingly Kaluza-Klein photon in the same mass range also provides excellent fits to the recently observed excesses in cosmic electron and positron fluxes. The amount of gamma-ray contributions, mostly from tau decays, can be significant around 300 GeV, thus can be observed or constrained by the forthcoming Fermi-LAT diffuse gamma-ray data.
Keywords
Cite
@article{arxiv.0908.4317,
title = {Kaluza-Klein Dark Matter After Fermi},
author = {Chuan-Ren Chen and Mihoko M. Nojiri and Seong Chan Park and Jing Shu},
journal= {arXiv preprint arXiv:0908.4317},
year = {2009}
}
Comments
19 pages, 6 figures