Dark matter annihilation and the PAMELA, FERMI, and ATIC anomalies
Document Type
Article
Publication Date
7-21-2010
Abstract
If dark matter annihilation accounts for the tantalizing excess of cosmic ray electron/positrons, as reported by the PAMELA, ATIC, HESS, and FERMI observatories, then the implied annihilation cross section must be relatively large. This results, in the context of standard cosmological models, in very small relic dark matter abundances that are incompatible with astrophysical observations. We explore possible resolutions to this apparent conflict in terms of nonstandard cosmological scenarios; plausibly allowing for large cross sections, while maintaining relic abundances in accord with current observations. © 2010 The American Physical Society.
Recommended Citation
El Zant, A. A.; Khalil, S.; and Okada, H., "Dark matter annihilation and the PAMELA, FERMI, and ATIC anomalies" (2010). Centre for Theoretical Physics. 9.
https://buescholar.bue.edu.eg/centre_theoretical_physics/9