Kaluza–Klein dark matter, electrons and gamma-ray telescopes
Kaluza–Klein dark matter, electrons and gamma-ray telescopes
Kaluza-Klein dark matter particles can annihilate efficiently into electron-positron pairs, providing a discrete feature (a sharp edge) in the cosmic $e^+ e^-$ spectrum at an energy equal to the particle's mass (typically several hundred GeV to one TeV). Although this feature is probably beyond the reach of satellite or balloon-based …